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Add Repo: ModRetro_oss-chromatic-console-fpga

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  1. ModRetro_oss-chromatic-console-fpga/CHANGELOG.md +101 -0
  2. ModRetro_oss-chromatic-console-fpga/CODE_OF_CONDUCT.md +135 -0
  3. ModRetro_oss-chromatic-console-fpga/CONTRIBUTING.md +1 -0
  4. ModRetro_oss-chromatic-console-fpga/README.md +77 -0
  5. ModRetro_oss-chromatic-console-fpga/esp32t/build.tcl +51 -0
  6. ModRetro_oss-chromatic-console-fpga/esp32t/build_evt1_x2.tcl +50 -0
  7. ModRetro_oss-chromatic-console-fpga/esp32t/impl/evt1_x2_process_config.json +88 -0
  8. ModRetro_oss-chromatic-console-fpga/esp32t/src/board/evt1_x2/evt1_x2.sdc +34 -0
  9. ModRetro_oss-chromatic-console-fpga/esp32t/src/fifo1k/fifo1k.v +642 -0
  10. ModRetro_oss-chromatic-console-fpga/esp32t/src/gowin_adc/gowin_adc.v +60 -0
  11. ModRetro_oss-chromatic-console-fpga/esp32t/src/gowin_pll_preevt/gowin_pll.v +138 -0
  12. ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/MultiPortRamCtrl.vhd +219 -0
  13. ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/PSRAMBIST_Burst.vhd +174 -0
  14. ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/PSRAMController.vhd +716 -0
  15. ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/ST7785_init.v +181 -0
  16. ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/ST7785_panel_master.v +267 -0
  17. ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/adc_wrap.v +85 -0
  18. ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/aud_system_top.v +154 -0
  19. ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/button_debounce.v +42 -0
  20. ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/gb_burst_write.v +70 -0
  21. ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/i2c_master.sv +634 -0
  22. ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/mem_system_top.sv +236 -0
  23. ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/mm_burst_read_to_stream.v +110 -0
  24. ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/mm_burst_write.v +52 -0
  25. ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/mpmc.v +71 -0
  26. ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/overlayBatteryBack.vhd +34 -0
  27. ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/overlayBatteryFront.vhd +56 -0
  28. ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/overlayDebug.vhd +121 -0
  29. ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/overlayTimerBack.vhd +34 -0
  30. ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/overlayTimerFront.vhd +33 -0
  31. ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/overlayTimerNumber.vhd +101 -0
  32. ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/polling_master.v +368 -0
  33. ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/qspi_slave.v +116 -0
  34. ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/system_monitor.sv +519 -0
  35. ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/system_monitor_arbiter.sv +106 -0
  36. ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/tlv320_init.v +90 -0
  37. ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/uart/fixed_point_divider/fixed_point_divider.v +1034 -0
  38. ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/uart/uart.v +142 -0
  39. ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/uart/uart_rx.vhd +497 -0
  40. ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/uart/uart_tx.vhd +518 -0
  41. ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/uart/usb_uart_config.v +277 -0
  42. ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/uart_packet_wrapper_rx.sv +99 -0
  43. ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/uart_packet_wrapper_tx.sv +162 -0
  44. ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/vid_system_top.sv +476 -0
  45. ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/vid_system_top.v +484 -0
  46. ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/vid_tpg.v +69 -0
  47. ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/EMU/CORE/BootROMs/README.md +9 -0
  48. ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/EMU/CORE/BootROMs/cgb_boot_hex.txt +128 -0
  49. ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/EMU/CORE/T80/GBse.vhd +266 -0
  50. ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/EMU/CORE/T80/T80.vhd +1341 -0
ModRetro_oss-chromatic-console-fpga/CHANGELOG.md ADDED
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1
+ ## v18.8
2
+
3
+ ### Changed
4
+ - Enable audio until ESP32 can configure the FPGA
5
+
6
+ ### Fixed
7
+ - IO0/En control sometimes fails to boot the ESP32
8
+ - The FPGA sometimes resets during play
9
+
10
+ ## v18.7
11
+
12
+ ### Fixed
13
+ - Custom sprite palettes distinguish betwen obj0 and obj1
14
+
15
+ ## v18.6
16
+
17
+ ### Added
18
+ - Support for streaming audio over USB.
19
+ - Support for custom palettes to override existing palette after boot.
20
+
21
+ ### Changed
22
+ - Inverted audio polarity
23
+
24
+ ## Fixed
25
+ - Reworked the design of frame blending
26
+
27
+ ## v18.5
28
+
29
+ ### Added
30
+ - Support for streaming on macOS and Discord.
31
+
32
+ ### Changed
33
+ - The default palettes changed for `A + B + Right` and `A + B + Left`. All credit to **rayjt9**.
34
+ - Tuned settings for the Chromatic Power Core.
35
+
36
+ ### Fixed
37
+ - LED indicator light now correct for AA, USB, and Chromatic Power Core use cases.
38
+ - Fixed an issue where the clock would skip in titles with an RTC (e.g. Pokemon Crystal).
39
+ - Fixed an issue where save data could be lost in some titles (e.g. Pokemon Crystal).
40
+ - Streaming no longer requires flipping the video in OBS.
41
+ - Miscellaneous compatibility fixes.
42
+
43
+ ## v18.4
44
+
45
+ ### Added
46
+ - Option to ignore diagonal inputs from the D-Pad
47
+ - Option to use the background palette 0 color (prevents screen transition flash)
48
+ - Option to set low battery icon display behavior
49
+
50
+ ### Changed
51
+ - Tuned battery thresholds for 1.2V NiMH AA's
52
+
53
+ ### Fixed
54
+ - Reduce backlight flashing when power source is nearly depleted
55
+ - Support for Kirby Tilt-n-Tumble
56
+ - Improved Chromatic firmware version detection
57
+ - Support streaming to Linux platforms
58
+
59
+ ## v18.0
60
+
61
+ ### Changed
62
+ - Improved button debouncing.
63
+
64
+ ### Fixed
65
+ - Fully mute game audio when speaker wheel is turned to minimum.
66
+ - Silent mode mutes all device audio output.
67
+ - Suppress invalid DPAD inputs to correct character sprite glitch.
68
+ - Color decoding bug corrected (greyscale check).
69
+
70
+ ## v17.0
71
+
72
+ ### Note
73
+ The MCU must be updated to v0.12.X or newer as the underlying communication protocol changed.
74
+
75
+ ### Changed
76
+ - Enable backlight switch on independent from MCU communication.
77
+ - Supports updated UART protocol.
78
+
79
+ ## v16.0
80
+
81
+ ### Note
82
+ The version of the IDE was switched to Gowin IDE v1.9.9.03. This resolves a synthensis bug which resulted in a palette flickering issue. Do not build with Gowin IDE v1.9.9.02 or older going forward.
83
+
84
+ ### Added
85
+ - Reset the FPGA core when a cartridge is removed.
86
+ - Add hotkey for reset (Menu+A+B+Start+Select).
87
+ - Add hotkeys for brightness (Menu+Left/Right).
88
+
89
+ ### Changed
90
+ - Only show icon overlays when the OSD is off.
91
+ - USB CDC descriptors for Linux & macOS.
92
+
93
+ ### Fixed
94
+ - Improved AA/LiPo detection logic to resolve critical battery false positives.
95
+ - Fixes palette flickering issue seen on some games like Tetris.
96
+
97
+ ## v13.1
98
+ This is the first production release.
99
+
100
+ ## v13.0 and older
101
+ A preliminary engineering release.
ModRetro_oss-chromatic-console-fpga/CODE_OF_CONDUCT.md ADDED
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1
+
2
+ # Contributor Covenant Code of Conduct
3
+
4
+ ## Our Pledge
5
+
6
+ We as members, contributors, and leaders pledge to make participation in our
7
+ community a harassment-free experience for everyone, regardless of age, body
8
+ size, visible or invisible disability, ethnicity, sex characteristics, gender
9
+ identity and expression, level of experience, education, socio-economic status,
10
+ nationality, personal appearance, race, caste, color, religion, or sexual
11
+ identity and orientation.
12
+
13
+ We pledge to act and interact in ways that contribute to an open, welcoming,
14
+ diverse, inclusive, and healthy community.
15
+
16
+ ## Our Standards
17
+
18
+ Examples of behavior that contributes to a positive environment for our
19
+ community include:
20
+
21
+ * Demonstrating empathy and kindness toward other people
22
+ * Being respectful of differing opinions, viewpoints, and experiences
23
+ * Giving and gracefully accepting constructive feedback
24
+ * Accepting responsibility and apologizing to those affected by our mistakes,
25
+ and learning from the experience
26
+ * Focusing on what is best not just for us as individuals, but for the overall
27
+ community
28
+
29
+ Examples of unacceptable behavior include:
30
+
31
+ * The use of sexualized language or imagery, and sexual attention or advances of
32
+ any kind
33
+ * Trolling, insulting or derogatory comments, and personal or political attacks
34
+ * Public or private harassment
35
+ * Publishing others' private information, such as a physical or email address,
36
+ without their explicit permission
37
+ * Other conduct which could reasonably be considered inappropriate in a
38
+ professional setting
39
+
40
+ ## Enforcement Responsibilities
41
+
42
+ Community leaders are responsible for clarifying and enforcing our standards of
43
+ acceptable behavior and will take appropriate and fair corrective action in
44
+ response to any behavior that they deem inappropriate, threatening, offensive,
45
+ or harmful.
46
+
47
+ Community leaders have the right and responsibility to remove, edit, or reject
48
+ comments, commits, code, wiki edits, issues, and other contributions that are
49
+ not aligned to this Code of Conduct, and will communicate reasons for moderation
50
+ decisions when appropriate.
51
+
52
+ ## Scope
53
+
54
+ This Code of Conduct applies within all community spaces, and also applies when
55
+ an individual is officially representing the community in public spaces.
56
+ Examples of representing our community include using an official email address,
57
+ posting via an official social media account, or acting as an appointed
58
+ representative at an online or offline event.
59
+
60
+ ## Enforcement
61
+
62
+ Instances of abusive, harassing, or otherwise unacceptable behavior may be
63
+ reported to the community leaders responsible for enforcement at
64
+ [INSERT CONTACT METHOD].
65
+ All complaints will be reviewed and investigated promptly and fairly.
66
+
67
+ All community leaders are obligated to respect the privacy and security of the
68
+ reporter of any incident.
69
+
70
+ ## Enforcement Guidelines
71
+
72
+ Community leaders will follow these Community Impact Guidelines in determining
73
+ the consequences for any action they deem in violation of this Code of Conduct:
74
+
75
+ ### 1. Correction
76
+
77
+ **Community Impact**: Use of inappropriate language or other behavior deemed
78
+ unprofessional or unwelcome in the community.
79
+
80
+ **Consequence**: A private, written warning from community leaders, providing
81
+ clarity around the nature of the violation and an explanation of why the
82
+ behavior was inappropriate. A public apology may be requested.
83
+
84
+ ### 2. Warning
85
+
86
+ **Community Impact**: A violation through a single incident or series of
87
+ actions.
88
+
89
+ **Consequence**: A warning with consequences for continued behavior. No
90
+ interaction with the people involved, including unsolicited interaction with
91
+ those enforcing the Code of Conduct, for a specified period of time. This
92
+ includes avoiding interactions in community spaces as well as external channels
93
+ like social media. Violating these terms may lead to a temporary or permanent
94
+ ban.
95
+
96
+ ### 3. Temporary Ban
97
+
98
+ **Community Impact**: A serious violation of community standards, including
99
+ sustained inappropriate behavior.
100
+
101
+ **Consequence**: A temporary ban from any sort of interaction or public
102
+ communication with the community for a specified period of time. No public or
103
+ private interaction with the people involved, including unsolicited interaction
104
+ with those enforcing the Code of Conduct, is allowed during this period.
105
+ Violating these terms may lead to a permanent ban.
106
+
107
+ ### 4. Permanent Ban
108
+
109
+ **Community Impact**: Demonstrating a pattern of violation of community
110
+ standards, including sustained inappropriate behavior, harassment of an
111
+ individual, or aggression toward or disparagement of classes of individuals.
112
+
113
+ **Consequence**: A permanent ban from any sort of public interaction within the
114
+ community.
115
+
116
+ ## Attribution
117
+
118
+ This Code of Conduct is adapted from the [Contributor Covenant][homepage],
119
+ version 2.1, available at
120
+ [https://www.contributor-covenant.org/version/2/1/code_of_conduct.html][v2.1].
121
+
122
+ Community Impact Guidelines were inspired by
123
+ [Mozilla's code of conduct enforcement ladder][Mozilla CoC].
124
+
125
+ For answers to common questions about this code of conduct, see the FAQ at
126
+ [https://www.contributor-covenant.org/faq][FAQ]. Translations are available at
127
+ [https://www.contributor-covenant.org/translations][translations].
128
+
129
+ [homepage]: https://www.contributor-covenant.org
130
+ [v2.1]: https://www.contributor-covenant.org/version/2/1/code_of_conduct.html
131
+ [Mozilla CoC]: https://github.com/mozilla/diversity
132
+ [FAQ]: https://www.contributor-covenant.org/faq
133
+ [translations]: https://www.contributor-covenant.org/translations
134
+
135
+
ModRetro_oss-chromatic-console-fpga/CONTRIBUTING.md ADDED
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1
+ Please check back later. We will populate this soon.
ModRetro_oss-chromatic-console-fpga/README.md ADDED
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1
+ # Chromatic FPGA
2
+ This repository houses the ModRetro Chromatic's FPGA design files.
3
+
4
+ For more information about the ModRetro Chromatic, please see visit [ModRetro.com](https://modretro.com/).
5
+
6
+ ## Setup
7
+
8
+ ### Repository
9
+
10
+ This project builds upon the open source work provided by the Game Boy `MiSTer` project. When checking out this repository, make sure to run the following command as this repository submodules the Game Boy `MiSTer` project.
11
+
12
+ ```bash
13
+ git submodule update --init --recursive
14
+ ```
15
+
16
+ ### Gowin Development Environment
17
+
18
+ **The Gowin FPGA Designer v1.9.9.03 must be used.** Using Gowin IDE v1.9.10.X or newer is currently not supported by this build.
19
+
20
+ You will also need to apply for a local license with Gowin through their website:
21
+ https://www.gowinsemi.com/en/support/license
22
+
23
+ The license expires after one year and will require reactivation.
24
+
25
+ You will receive an email within a few minutes with a `.lic` file attached. Run the Gowin IDE and install the license when it prompts you. You'll need to close and re-open the GOWIN IDE if everything was successful.
26
+
27
+ ## Building
28
+ Once in the IDE, load `evt1_x2.gprj` project and click on the green recycle-like button icon to run synthesis and PnR. This will take about 5-10 minutes to complete.
29
+
30
+ ## Flashing
31
+ Flashing can be performed using the official [Gowin Programmer](https://www.gowinsemi.com/en/) software or the [`openFPGALoader`](https://github.com/trabucayre/openFPGALoader) utility through the Chromatic's USB interface. The Gowin Programmer requires the installation of the GWU2X device driver.
32
+
33
+ Note:
34
+ 1. The Chromatic must be powered on for either tool to detect the FPGA. This means the power switch is in the **ON** position.
35
+ 2. If using `openFPGALoader`, the tool must be compiled with support for the Gowin GWU2X cable.
36
+
37
+ ### Example Using `openFPGALoader`
38
+ **Detect the Chromatic FPGA While Powered On**
39
+ ```bash
40
+ openFPGALoader --detect --cable gwu2x
41
+ ```
42
+
43
+ You will see an output similar to:
44
+ ```
45
+ empty
46
+ User requested: 6000000 real frequency is 6000000
47
+ index 0:
48
+ idcode 0x1281b
49
+ manufacturer Gowin
50
+ family GW5A
51
+ model GW5A-25
52
+ irlength 8
53
+ ```
54
+
55
+ **Flashing the Chromatic**
56
+
57
+ ```bash
58
+ openFPGALoader --write-flash --cable gwu2x --reset <file>
59
+ ```
60
+
61
+ Here, `<file>` refers to the generated bitstream file. This file can be found at `esp32t/impl/pnr/evt1_x2.fs`.
62
+
63
+ ## Custom Modifications
64
+
65
+ When modifying the RTL design, please also update the 14-bit FPGA version within [esp32t/src/rtl/BSP/system_monitor.sv] around line 384 (see `version`).
66
+
67
+ This will ensure you can always using the [ModRetro Update Tool](https://modretro.com/pages/downloads#mrupdater) to restore your Chromatic to the latest official release.
68
+
69
+ ## Issues
70
+ Please submit all issues and bug reports through our [Contact Form](https://modretro.com/pages/contact).
71
+
72
+ ## Attributions
73
+ - [GOWIN Semiconductor](https://www.gowinsemi.com/en/)
74
+ - [MiSTer](https://github.com/MiSTer-devel/Gameboy_MiSTer)
75
+
76
+ ## Special Thanks
77
+ - [rayjt9] For their palette improvements to the BootROM.
ModRetro_oss-chromatic-console-fpga/esp32t/build.tcl ADDED
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1
+ add_file -type verilog "src/fifo1k/fifo1k.v"
2
+ add_file -type verilog "src/gowin_adc/gowin_adc.v"
3
+ add_file -type verilog "src/rtl/BSP/ST7785_init.v"
4
+ add_file -type verilog "src/rtl/BSP/ST7785_panel_master.v"
5
+ add_file -type verilog "src/rtl/BSP/adc_wrap.v"
6
+ add_file -type verilog "src/rtl/BSP/aud_system_top.v"
7
+ add_file -type verilog "src/rtl/BSP/gb_burst_write.v"
8
+ add_file -type verilog "src/rtl/BSP/i2c_master.sv"
9
+ add_file -type verilog "src/rtl/BSP/mem_system_top.sv"
10
+ add_file -type verilog "src/rtl/BSP/mm_burst_read_to_stream.v"
11
+ add_file -type verilog "src/rtl/BSP/mm_burst_write.v"
12
+ add_file -type verilog "src/rtl/BSP/mpmc.v"
13
+ add_file -type verilog "src/rtl/BSP/polling_master.v"
14
+ add_file -type verilog "src/rtl/BSP/qspi_slave.v"
15
+ add_file -type verilog "src/rtl/BSP/system_monitor.v"
16
+ add_file -type verilog "src/rtl/BSP/tlv320_init.v"
17
+ add_file -type verilog "src/rtl/BSP/uart/fixed_point_divider/fixed_point_divider.v"
18
+ add_file -type verilog "src/rtl/BSP/uart/uart.v"
19
+ add_file -type verilog "src/rtl/BSP/uart/usb_uart_config.v"
20
+ add_file -type verilog "src/rtl/BSP/vid_system_top.v"
21
+ add_file -type verilog "src/rtl/BSP/vid_tpg.v"
22
+ add_file -type verilog "src/rtl/EMU/CORE/cheatcodes.sv"
23
+ add_file -type verilog "src/rtl/EMU/CORE/dpramV.v"
24
+ add_file -type verilog "src/rtl/EMU/CORE/dpram_difV.v"
25
+ add_file -type verilog "src/rtl/EMU/CORE/gb.v"
26
+ add_file -type verilog "src/Gameboy_MiSTer/rtl/hdma.v"
27
+ add_file -type verilog "src/rtl/EMU/CORE/link.v"
28
+ add_file -type verilog "src/rtl/EMU/CORE/sprites.v"
29
+ add_file -type verilog "src/Gameboy_MiSTer/rtl/timer.v"
30
+ add_file -type verilog "src/rtl/EMU/CORE/video.v"
31
+ add_file -type verilog "src/rtl/EMU/cart.v"
32
+ add_file -type verilog "src/rtl/EMU/emu_system_top.v"
33
+ add_file -type vhdl "src/rtl/BSP/MultiPortRamCtrl.vhd"
34
+ add_file -type vhdl "src/rtl/BSP/PSRAMBIST_Burst.vhd"
35
+ add_file -type vhdl "src/rtl/BSP/PSRAMController.vhd"
36
+ add_file -type vhdl "src/rtl/BSP/uart/uart_rx.vhd"
37
+ add_file -type vhdl "src/rtl/BSP/uart/uart_tx.vhd"
38
+ add_file -type vhdl "src/rtl/EMU/CORE/T80/GBse.vhd"
39
+ add_file -type vhdl "src/Gameboy_MiSTer/rtl/T80/T80.vhd"
40
+ add_file -type vhdl "src/Gameboy_MiSTer/rtl/T80/T80_ALU.vhd"
41
+ add_file -type vhdl "src/rtl/EMU/CORE/T80/T80_MCode.vhd"
42
+ add_file -type vhdl "src/Gameboy_MiSTer/rtl/T80/T80_Pack.vhd"
43
+ add_file -type vhdl "src/Gameboy_MiSTer/rtl/T80/T80_Reg.vhd"
44
+ add_file -type vhdl "src/rtl/EMU/CORE/bus_savestates.vhd"
45
+ add_file -type vhdl "src/Gameboy_MiSTer/rtl/gb_savestates.vhd"
46
+ add_file -type vhdl "src/Gameboy_MiSTer/rtl/gb_statemanager.vhd"
47
+ add_file -type vhdl "src/rtl/EMU/CORE/gbc_snd.vhd"
48
+ add_file -type vhdl "src/Gameboy_MiSTer/rtl/reg_savestates.vhd"
49
+ add_file -type vhdl "src/rtl/EMU/CORE/speedcontrol.vhd"
50
+ add_file -type other "src/rtl/BSP/tlv320regs.hex"
51
+
ModRetro_oss-chromatic-console-fpga/esp32t/build_evt1_x2.tcl ADDED
@@ -0,0 +1,50 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ source build.tcl
2
+ set_device GW5A-EV25UG256CC1/I0 -device_version A
3
+ set_option -synthesis_tool gowinsynthesis
4
+ set_option -top_module top
5
+ set_option -verilog_std sysv2017
6
+ set_option -vhdl_std vhd2008
7
+ set_option -rw_check_on_ram 1
8
+ set_option -use_sspi_as_gpio 1
9
+ set_option -power_on_reset_monitor 1
10
+ set_option -use_i2c_as_gpio 1
11
+ set_option -use_cpu_as_gpio 1
12
+ set_option -multi_boot 0
13
+ set_option -bit_format bin
14
+ set_option -bg_programming jtag_sspi_qsspi
15
+ set_option -output_base_name evt1_x2_v07
16
+ set_option -use_mspi_as_gpio 1
17
+ add_file -type verilog "src/board/evt1_x2/header.vh"
18
+ add_file -type cst "src/board/evt1_x2/evt1_x2.cst"
19
+ add_file -type sdc "src/board/evt1_x2/evt1_x2.sdc"
20
+ #add_file -type gao "src/psram.rao"
21
+
22
+ #add_file -type verilog "src/rtl/USB/USBUVC/usbuvc_top.v"
23
+ #add_file -type verilog "src/rtl/USB/USBUVC/Gowin_PLL_UVC/Gowin_PLL_UVC.v"
24
+ #add_file -type verilog "src/rtl/USB/USBUVC/usb_video/usb_defs.v"
25
+ #add_file -type verilog "src/rtl/USB/USBUVC/usb_video/usb_descriptor_video.v"
26
+ #add_file -type verilog "src/rtl/USB/USBUVC/usb_video/uvc_defs.v"
27
+ #add_file -type verilog "src/rtl/USB/USBUVC/usb_device_controller/usb_device_controller.v"
28
+ #add_file -type verilog "src/rtl/USB/USBUVC/usb2_0_softphy/usb2_0_softphy_top.v"
29
+ #add_file -type verilog "src/rtl/USB/USBUVC/usb2_0_softphy/usb2_0_softphy_name.v"
30
+ #add_file -type verilog "src/rtl/USB/USBUVC/usb2_0_softphy/usb2_0_softphy_encryption.v"
31
+ #add_file -type verilog "src/rtl/USB/USBUVC/usb2_0_softphy/static_macro_define.v"
32
+
33
+ add_file -type verilog "src/rtl/USB/USBUVCUART/usbuvcuart_top.v"
34
+ add_file -type verilog "src/rtl/USB/USBUVCUART/Gowin_PLL_UVC/Gowin_PLL_UVC.v"
35
+ add_file -type verilog "src/rtl/USB/USBUVCUART/usb_video/usb_defs.v"
36
+ add_file -type verilog "src/rtl/USB/USBUVCUART/usb_video/usb_descriptor_video.v"
37
+ add_file -type verilog "src/rtl/USB/USBUVCUART/usb_video/uvc_defs.v"
38
+ add_file -type verilog "src/rtl/USB/USBUVCUART/usb_device_controller/usb_device_controller.v"
39
+ add_file -type verilog "src/rtl/USB/USBUVCUART/usb2_0_softphy/usb2_0_softphy_top.v"
40
+ add_file -type verilog "src/rtl/USB/USBUVCUART/usb2_0_softphy/usb2_0_softphy_name.v"
41
+ add_file -type verilog "src/rtl/USB/USBUVCUART/usb2_0_softphy/usb2_0_softphy_encryption.v"
42
+ add_file -type verilog "src/rtl/USB/USBUVCUART/usb2_0_softphy/static_macro_define.v"
43
+ add_file -type verilog "src/rtl/USB/USBUVCUART/uart/uart.v"
44
+ add_file -type verilog "src/rtl/USB/USBUVCUART/sync_fifo/usb_fifo.v"
45
+ add_file -type verilog "src/rtl/USB/USBUVCUART/sync_fifo/sync_rx_pkt_fifo.v"
46
+ add_file -type verilog "src/rtl/USB/USBUVCUART/sync_fifo/sync_tx_pkt_fifo.v"
47
+
48
+ add_file -type verilog "src/gowin_pll_preevt/gowin_pll.v"
49
+ add_file -type verilog "src/top.v"
50
+ run all
ModRetro_oss-chromatic-console-fpga/esp32t/impl/evt1_x2_process_config.json ADDED
@@ -0,0 +1,88 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ {
2
+ "BACKGROUND_PROGRAMMING" : "jtag_sspi_qsspi",
3
+ "COMPRESS" : false,
4
+ "CPU" : true,
5
+ "CRC_CHECK" : true,
6
+ "Clock_Route_Order" : 1,
7
+ "Correct_Hold_Violation" : true,
8
+ "DONE" : false,
9
+ "DOWNLOAD_SPEED" : "210/2",
10
+ "Disable_Insert_Pad" : false,
11
+ "ENABLE_CTP" : false,
12
+ "ENABLE_MERGE_MODE" : false,
13
+ "ENCRYPTION_KEY" : false,
14
+ "ENCRYPTION_KEY_TEXT" : "00000000000000000000000000000000",
15
+ "ERROR_DECTION_AND_CORRECTION" : false,
16
+ "ERROR_DECTION_ONLY" : false,
17
+ "ERROR_INJECTION" : false,
18
+ "EXTERNAL_MASTER_CONFIG_CLOCK" : false,
19
+ "Enable_DSRM" : false,
20
+ "FORMAT" : "binary",
21
+ "FREQUENCY_DIVIDER" : "1",
22
+ "Generate_Constraint_File_of_Ports" : false,
23
+ "Generate_IBIS_File" : false,
24
+ "Generate_Plain_Text_Timing_Report" : false,
25
+ "Generate_Post_PNR_Simulation_Model_File" : false,
26
+ "Generate_Post_Place_File" : false,
27
+ "Generate_SDF_File" : false,
28
+ "Generate_VHDL_Post_PNR_Simulation_Model_File" : false,
29
+ "Global_Freq" : "default",
30
+ "GwSyn_Loop_Limit" : 2000,
31
+ "HOTBOOT" : false,
32
+ "I2C" : true,
33
+ "I2C_SLAVE_ADDR" : "00",
34
+ "IncludePath" : [
35
+
36
+ ],
37
+ "Incremental_Compile" : "",
38
+ "Initialize_Primitives" : false,
39
+ "JTAG" : false,
40
+ "MODE_IO" : false,
41
+ "MSPI" : true,
42
+ "MSPI_JUMP" : false,
43
+ "MULTIBOOT_ADDRESS_WIDTH" : "24",
44
+ "MULTIBOOT_MODE" : "Normal",
45
+ "MULTIBOOT_SPI_FLASH_ADDRESS" : "000000",
46
+ "MULTIJUMP_ADDRESS_WIDTH" : "24",
47
+ "MULTIJUMP_MODE" : "Normal",
48
+ "MULTIJUMP_SPI_FLASH_ADDRESS" : "000000",
49
+ "Multi_Boot" : false,
50
+ "OUTPUT_BASE_NAME" : "evt1_x2",
51
+ "POWER_ON_RESET_MONITOR" : true,
52
+ "PRINT_BSRAM_VALUE" : true,
53
+ "PROGRAM_DONE_BYPASS" : false,
54
+ "PlaceInRegToIob" : true,
55
+ "PlaceIoRegToIob" : true,
56
+ "PlaceOutRegToIob" : true,
57
+ "Place_Option" : "0",
58
+ "Process_Configuration_Verion" : "1.0",
59
+ "Promote_Physical_Constraint_Warning_to_Error" : true,
60
+ "READY" : false,
61
+ "RECONFIG_N" : false,
62
+ "Ram_RW_Check" : true,
63
+ "Replicate_Resources" : false,
64
+ "Report_Auto-Placed_Io_Information" : false,
65
+ "Route_Maxfan" : 23,
66
+ "Route_Option" : "1",
67
+ "Run_Timing_Driven" : true,
68
+ "SECURE_MODE" : false,
69
+ "SECURITY_BIT" : true,
70
+ "SEU_HANDLER" : false,
71
+ "SEU_HANDLER_CHECKSUM" : false,
72
+ "SEU_HANDLER_MODE" : "auto",
73
+ "SSPI" : true,
74
+ "STOP_SEU_HANDLER" : false,
75
+ "Show_All_Warnings" : false,
76
+ "Synthesize_tool" : "GowinSyn",
77
+ "TclPre" : "",
78
+ "TopModule" : "top",
79
+ "USERCODE" : "1337D00D",
80
+ "Unused_Pin" : "As_input_tri_stated_with_pull_up",
81
+ "VCCAUX" : "3.3",
82
+ "VCCX" : "3.3",
83
+ "VHDL_Standard" : "VHDL_Std_2008",
84
+ "Verilog_Standard" : "Vlg_Std_Sysv2017",
85
+ "WAKE_UP" : "0",
86
+ "show_all_warnings" : false,
87
+ "turn_off_bg" : false
88
+ }
ModRetro_oss-chromatic-console-fpga/esp32t/src/board/evt1_x2/evt1_x2.sdc ADDED
@@ -0,0 +1,34 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ create_generated_clock -name xclk2 -source [get_ports {CLK_FPGA}] -master_clock exclk -divide_by 1 -multiply_by 4 [get_pins {u_Gowin_PLL/PLLA_inst/CLKOUT0}]
2
+ create_generated_clock -name pclk -source [get_ports {CLK_FPGA}] -master_clock exclk -divide_by 1 -multiply_by 1 [get_pins {u_Gowin_PLL/PLLA_inst/CLKOUT1}]
3
+ create_generated_clock -name hclk -source [get_ports {CLK_FPGA}] -master_clock exclk -divide_by 2 -multiply_by 1 [get_pins {u_Gowin_PLL/PLLA_inst/CLKOUT2}]
4
+ create_generated_clock -name gclk -source [get_ports {CLK_FPGA}] -master_clock exclk -divide_by 4 -multiply_by 1 [get_pins {u_Gowin_PLL/PLLA_inst/CLKOUT3}]
5
+ create_generated_clock -name xclk -source [get_ports {CLK_FPGA}] -master_clock exclk -divide_by 1 -multiply_by 2 [get_pins {u_Gowin_PLL/PLLA_inst/CLKOUT4}]
6
+
7
+ create_clock -name sclk -period 25 [get_ports {QSPI_CLK}]
8
+ create_clock -name exclk -period 29.802322 [get_ports {CLK_FPGA}]
9
+
10
+ set_clock_groups -asynchronous -group [get_clocks {pclk}] -group [get_clocks {hclk}]
11
+ set_clock_groups -asynchronous -group [get_clocks {pclk}] -group [get_clocks {gclk}]
12
+ set_clock_groups -asynchronous -group [get_clocks {hclk}] -group [get_clocks {gclk}]
13
+
14
+ set_max_delay -from [get_ports {CART_D[*]}] -to [get_clocks {hclk}] 13
15
+ set_max_delay -from [get_clocks {hclk}] -to [get_ports {CART_A[*]}] 14
16
+ set_max_delay -from [get_clocks {hclk}] -to [get_ports {CART_WR}] 14
17
+ set_max_delay -from [get_clocks {hclk}] -to [get_ports {CART_RD}] 14
18
+ set_max_delay -from [get_clocks {hclk}] -to [get_ports {CART_CS}] 14
19
+ set_max_delay -from [get_clocks {hclk}] -to [get_ports {LINK_SD}] 14
20
+ set_max_delay -from [get_clocks {hclk}] -to [get_ports {CART_D[*]}] 14
21
+
22
+ create_clock -name ck24 -period 41.666667 -waveform {0 20.833333} [get_ports {CLK_24MHz}]
23
+
24
+ set_clock_groups -asynchronous -group [get_clocks {pclk}] -group [get_clocks {hclk}]
25
+ set_clock_groups -asynchronous -group [get_clocks {pclk}] -group [get_clocks {gclk}]
26
+ set_clock_groups -asynchronous -group [get_clocks {hclk}] -group [get_clocks {gclk}]
27
+
28
+ // USB Clocks
29
+ create_generated_clock -name PHY_CLKOUT -source [get_ports {CLK_24MHz}] -master_clock ck24 -divide_by 16 -multiply_by 40 [get_pins {u_usb_top/u_Gowin_PLL_USB/PLLA_inst/CLKOUT1}]
30
+ create_generated_clock -name fclk_960M -source [get_ports {CLK_24MHz}] -master_clock ck24 -divide_by 1 -multiply_by 40 [get_nets {u_usb_top/fclk_960M}]
31
+ create_generated_clock -name clk24p -source [get_ports {CLK_24MHz}] -master_clock ck24 -divide_by 1 -multiply_by 1 [get_pins {u_usb_top/u_Gowin_PLL_USB/PLLA_inst/CLKOUT2}]
32
+ create_clock -name usbintsclk -period 8 -waveform {0 4} [get_nets {u_usb_top/u_USB_SoftPHY_Top/usb2_0_softphy/u_usb_20_phy_utmi/u_usb2_0_softphy/u_usb_phy_hs/sclk}] -add
33
+ set_clock_groups -asynchronous -group [get_clocks {PHY_CLKOUT}] -group [get_clocks {fclk_960M}]
34
+ set_clock_groups -asynchronous -group [get_clocks {PHY_CLKOUT}] -group [get_clocks {usbintsclk}]
ModRetro_oss-chromatic-console-fpga/esp32t/src/fifo1k/fifo1k.v ADDED
@@ -0,0 +1,642 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ //
2
+ //Written by GowinSynthesis
3
+ //Tool Version "V1.9.9 (64-bit)"
4
+ //Sat Feb 24 20:59:00 2024
5
+
6
+ //Source file index table:
7
+ //file0 "\C:/gh/Experimental1/esp32t/src/fifo1k/temp/FIFO/fifo_define.v"
8
+ //file1 "\C:/gh/Experimental1/esp32t/src/fifo1k/temp/FIFO/fifo_parameter.v"
9
+ //file2 "\C:/Gowin/Gowin_V1.9.9_x64/IDE/ipcore/FIFO/data/edc.v"
10
+ //file3 "\C:/Gowin/Gowin_V1.9.9_x64/IDE/ipcore/FIFO/data/fifo.v"
11
+ //file4 "\C:/Gowin/Gowin_V1.9.9_x64/IDE/ipcore/FIFO/data/fifo_top.v"
12
+ `timescale 100 ps/100 ps
13
+ `pragma protect begin_protected
14
+ `pragma protect version="2.3"
15
+ `pragma protect author="default"
16
+ `pragma protect author_info="default"
17
+ `pragma protect encrypt_agent="GOWIN"
18
+ `pragma protect encrypt_agent_info="GOWIN Encrypt Version 2.3"
19
+
20
+ `pragma protect encoding=(enctype="base64", line_length=76, bytes=256)
21
+ `pragma protect key_keyowner="GOWIN",key_keyname="GWK2023-09",key_method="rsa"
22
+ `pragma protect key_block
23
+ agRQjXaqnlxj1I23WV89ifd8tJyCShyjSY4mC+CuxmW0lVJnGLoZmv55Hw9LpOiKlJiQVjHmKwxl
24
+ 5p9cY/0RXhjU7r6QPRq48IQo17/imUCgK2yhmlcewi9M2D6Nn4nFU8vkW9CHhbBDjEUpyel62HAD
25
+ mUSiI3nt2/QmHtdV3ZWM0i20xOdyNWHJM3UclvCVN9fyxGra+bhGUB4QUD6eebtRASB3CDK2APWD
26
+ jjv1E1wMc3TrBX9UuucmEkmuBy6nLg33qFz+1u32tBEKwsVUNMdZNkxfulxVua6LfrjV1Jyg2eI2
27
+ 3su5rM8b81AHIfrV0AAaouv2Ggo0x+/n5GzfEg==
28
+
29
+ `pragma protect encoding=(enctype="base64", line_length=76, bytes=31776)
30
+ `pragma protect data_keyowner="default-ip-vendor"
31
+ `pragma protect data_keyname="default-ip-key"
32
+ `pragma protect data_method="aes128-cfb"
33
+ `pragma protect data_block
34
+ NkA8qi1wsYUw6AOcAXafPfifaUimR5DGReK0spUFmRXUYf2oEAeQGRakjjSTjPt9kqF3ftRLH9Lh
35
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36
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37
+ WWGYRXZIohfkMt4mpE9DmemnH/BEfZJ+bkiOMVKQFvd4hnV+RAu+mAMXnikVG/w8lwhGFVkIS/lS
38
+ Pv6wmh/iYE/MLXJBJSQG7J4SguSIb18uY8bHBy6BQXQRkP9PnSJV0A/PI4QSqUyBw5s2Q9+9p7lg
39
+ 2hwAwQCRQWy4y0cxYW6I7DdSbJgn2rqEF7+eOCpnuCI0OnQp3PVKYsMvFFCZYQB3p4CoA39iUwjo
40
+ 0qxzBr0iRmVEKXQcxYHWOphs2bOwS5GY7mq0/7vgS+0ezyxJw3dcMBmsc3FzIKWj8Ogh+8hz92it
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+ o6K0cMHVgnSqSBLFOUbAlYVJ8NmMC+EY56UK2Bl6Srt5zI9gyOzoyNryXXqsmppGhcFKSQDG1w7c
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+ zKXnFtcrmPm/OfMJQHd7yvFXbkV0Ml8qTawmzI6AB1OwEcSnrttjGFxPdi4liIJY2g3Tx0UWNR4w
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+ B8qVVxN64GoQ+ACc1+znQwSv8lvdPlwNEq7VURg5QwlNKiLiB+OsPo3MpGZZdWCDZPDc2Rnqv/mh
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46
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47
+ D5UhNgJEI5WnsRVOn6a56zT04p5OlyKWMjsRxFJd3MFt6wG6GaQOSIwSW1FujynE6wGVHjdvfeZt
48
+ aZtOMzCw8styHJ3olc/wN/vfD5CtGK4v+N9zMecd9NvqSN9zU+GIw1H/evvdsMlYG63QE5DEx/c5
49
+ +tADINbEIQGbYSi/WHobVnSwDhvBXTTmJOBwUvAAbsPnBYdKc9QI96aG3Ms1FsTIFQ1/zjMpwy7Q
50
+ RzZlmlGbIfLzTFdZ3cytJRtDV12ZGcEl6aRDUGMTnCzu9OUcUkRgtZDcvoeloUUpE3Q/WwZo83Aa
51
+ ycHSkH1QV1cb+1/PmvjONo2HQKZUXDlwo7FKziY39vWL0RNkGfE1ttT1RHp7lqoWtV4qMiU5WwR4
52
+ Cfz00dbEo6RDL/T6CFaAHnNZlvNTzEiu80nXRSSE42naLwdQZcZYxt3Mh1h4iAHjULbzp3Fny4WB
53
+ qc20uVvYMryVVs941t0TSfjr+ZtgqAv1xevb5qnBtxOu1GovXW41jiaPf/c5OxeYM2hJLrjoEVGA
54
+ x0HltfaLglOAQNzfNuLTQJlbGmGYHBQEQlOhNG8x8kyOsbvtaSxPaNHnPxbTiY8vQumVmkJ9rx3r
55
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+ YLkZYUh6j5/Ayi0VuCab4VAko7YSpoOpQIzXvk8tz6Iy6exLrYXy0oOvx5S+336PLFimMLwoRkHI
576
+ 4/vnf1iq4rLERoB9aJqzX/DJzJJvApiukr+tutGokHrb7LdD834rNecH6/Oe0CRTMXrRD3K+QxWP
577
+ OsWE7Esht1MEFi017fHfDCTeYHmePj5nJT90THfdm6z7OoB0wRSMMQVk/qfHHc9Ko4EmlFns/cJ8
578
+ kb4Jne9sQQLkV+EnN4hSmElq0G4AOkJwl8NSZacTeQq+mX9H1gpMB+B1eW2tVa80w2UWYalyqFsO
579
+ 3kmCHcBsBZVMrmjj7cvRsDeNaYnLxTUYxG/RxDHooCxrOqZTLADCEXRgmrg/y0yUE5ldEu2NsT76
580
+ 1vthdRhqvSdW1GtO1gUCBu0NDEaM3dWHwi/JNOpSW7CEhOTY7xYKwCC3uRrf8HuySHkGDjtbWNrN
581
+ S9wKioZ4r1FKSO+EmISstDHpLx5o9Zc5svulfMjOcOnFu4TNuq4MRBInbw2uPUmPCKKQi/dqVJ8h
582
+ M1E5LLvahEE6duLCIEpPN94XI2K1jADi9jpiPbrrkSLycKWachRlPjWAjaBTXDEOsmud8lBnmAHD
583
+ WJWC2dwN/hcE7LL8bt3C3+mz3dNqxXKkNo0+avJkC+HOnxZI5sR9/ZGarQSuQYGJ/JFxHWaWRQeo
584
+ 58iyiQyKCqS1fqtinV9xblO6A526zExniCMW8NbdBuC7D8CtNIvjk8TqEZtWpLRuvVmJwEMV6boV
585
+ h5sAyXmIUyVP28EUbw1XE3yWha45qKG+LZydTrPYJJTMachhHIWbR3ISsDMPr9kfFuEDn0Z4MAFG
586
+ FnG0QGMT31HqDAIMBz/D74EmYwUAXI4jifYrBWvQJM/X7/9plAaEscnzykrsFBE67QWDog75TQPp
587
+ 4d1OaBWidIlVmaxeGJRv1VMWcNi2tHOKrfP6g4s6QO+nNr60Yg5UdZGxgSgp6CT+3uAjUaZtjKqX
588
+ U9aQvOHDYhCsmHE1tGQNgFrmRHHQSYmS71lX2ChbHkNt5DSjh1CXaGCRXO2iYrB9voC59MthK7x6
589
+ yUVNABnJftDZgrTqXwOu6Ib7SZ+/z5EoaRn9MA+WBC5hsYv6hBG2QpPOruoApqzP+fWOYf5Wh/JZ
590
+ hgQI5ZFDI/1xWTP8DxFfORuAfBbg/rOXBFCWC3xH3TGcJbOo9S8U3OJ9pQLbgzmYjS61tJqkSK10
591
+ W27XcQsRC4ljufS/llO9EfkrVth+iGxghCtW
592
+ `pragma protect end_protected
593
+ module fifo1k (
594
+ Data,
595
+ WrReset,
596
+ RdReset,
597
+ WrClk,
598
+ RdClk,
599
+ WrEn,
600
+ RdEn,
601
+ Almost_Full,
602
+ Q,
603
+ Empty,
604
+ Full
605
+ )
606
+ ;
607
+ input [15:0] Data;
608
+ input WrReset;
609
+ input RdReset;
610
+ input WrClk;
611
+ input RdClk;
612
+ input WrEn;
613
+ input RdEn;
614
+ output Almost_Full;
615
+ output [15:0] Q;
616
+ output Empty;
617
+ output Full;
618
+ wire VCC;
619
+ wire GND;
620
+ \~fifo.fifo1k fifo_inst (
621
+ .RdClk(RdClk),
622
+ .RdReset(RdReset),
623
+ .WrClk(WrClk),
624
+ .WrReset(WrReset),
625
+ .WrEn(WrEn),
626
+ .RdEn(RdEn),
627
+ .Data(Data[15:0]),
628
+ .Full(Full),
629
+ .Almost_Full(Almost_Full),
630
+ .Empty(Empty),
631
+ .Q(Q[15:0])
632
+ );
633
+ VCC VCC_cZ (
634
+ .V(VCC)
635
+ );
636
+ GND GND_cZ (
637
+ .G(GND)
638
+ );
639
+ GSR GSR (
640
+ .GSRI(VCC)
641
+ );
642
+ endmodule /* fifo1k */
ModRetro_oss-chromatic-console-fpga/esp32t/src/gowin_adc/gowin_adc.v ADDED
@@ -0,0 +1,60 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ //Copyright (C)2014-2023 Gowin Semiconductor Corporation.
2
+ //All rights reserved.
3
+ //File Title: IP file
4
+ //GOWIN Version: V1.9.9 Beta-4
5
+ //Part Number: GW5A-EV25UG256CES
6
+ //Device: GW5A-25
7
+ //Device Version: A
8
+ //Created Time: Tue Oct 31 16:08:09 2023
9
+
10
+ module Gowin_ADC (adcrdy, adcvalue, mdrp_rdata, vsenctl, adcen, clk, drstn, adcreqi, adcmode, mdrp_clk, mdrp_wdata, mdrp_a_inc, mdrp_opcode);
11
+
12
+ output adcrdy;
13
+ output [13:0] adcvalue;
14
+ output [7:0] mdrp_rdata;
15
+ input [2:0] vsenctl;
16
+ input adcen;
17
+ input clk;
18
+ input drstn;
19
+ input adcreqi;
20
+ input adcmode;
21
+ input mdrp_clk;
22
+ input [7:0] mdrp_wdata;
23
+ input mdrp_a_inc;
24
+ input [1:0] mdrp_opcode;
25
+
26
+ ADC adc_inst (
27
+ .ADCRDY(adcrdy),
28
+ .ADCVALUE(adcvalue),
29
+ .MDRP_RDATA(mdrp_rdata),
30
+ .VSENCTL(vsenctl),
31
+ .ADCEN(adcen),
32
+ .CLK(clk),
33
+ .DRSTN(drstn),
34
+ .ADCREQI(adcreqi),
35
+ .ADCMODE(adcmode),
36
+ .MDRP_CLK(mdrp_clk),
37
+ .MDRP_WDATA(mdrp_wdata),
38
+ .MDRP_A_INC(mdrp_a_inc),
39
+ .MDRP_OPCODE(mdrp_opcode)
40
+ );
41
+
42
+ defparam adc_inst.CLK_SEL = 1'b0;
43
+ defparam adc_inst.DIV_CTL = 2'd0;
44
+ defparam adc_inst.BUF_EN = 12'b010000001001;
45
+ defparam adc_inst.BUF_BK0_VREF_EN = 1'b0;
46
+ defparam adc_inst.BUF_BK1_VREF_EN = 1'b0;
47
+ defparam adc_inst.BUF_BK2_VREF_EN = 1'b0;
48
+ defparam adc_inst.BUF_BK3_VREF_EN = 1'b0;
49
+ defparam adc_inst.BUF_BK4_VREF_EN = 1'b0;
50
+ defparam adc_inst.BUF_BK5_VREF_EN = 1'b0;
51
+ defparam adc_inst.BUF_BK6_VREF_EN = 1'b0;
52
+ defparam adc_inst.BUF_BK7_VREF_EN = 1'b0;
53
+ defparam adc_inst.CSR_ADC_MODE = 1'b1;
54
+ defparam adc_inst.CSR_VSEN_CTRL = 3'd0;
55
+ defparam adc_inst.CSR_SAMPLE_CNT_SEL = 3'd4;
56
+ defparam adc_inst.CSR_RATE_CHANGE_CTRL = 3'd4;
57
+ defparam adc_inst.CSR_FSCAL = 10'd653;
58
+ defparam adc_inst.CSR_OFFSET = 12'd0;
59
+
60
+ endmodule //Gowin_ADC
ModRetro_oss-chromatic-console-fpga/esp32t/src/gowin_pll_preevt/gowin_pll.v ADDED
@@ -0,0 +1,138 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ //Copyright (C)2014-2024 Gowin Semiconductor Corporation.
2
+ //All rights reserved.
3
+ //File Title: IP file
4
+ //Tool Version: V1.9.9.02
5
+ //Part Number: GW5A-EV25UG256CES
6
+ //Device: GW5A-25
7
+ //Device Version: A
8
+ //Created Time: Wed Apr 24 22:27:40 2024
9
+
10
+ module Gowin_PLL (lock, clkout0, clkout1, clkout2, clkout3, clkout4, clkin, reset);
11
+
12
+ output lock;
13
+ output clkout0;
14
+ output clkout1;
15
+ output clkout2;
16
+ output clkout3;
17
+ output clkout4;
18
+ input clkin;
19
+ input reset;
20
+
21
+ wire clkout5;
22
+ wire clkout6;
23
+ wire clkfbout;
24
+ wire [7:0] mdrdo;
25
+ wire gw_gnd;
26
+
27
+ assign gw_gnd = 1'b0;
28
+
29
+ PLLA PLLA_inst (
30
+ .LOCK(lock),
31
+ .CLKOUT0(clkout0),
32
+ .CLKOUT1(clkout1),
33
+ .CLKOUT2(clkout2),
34
+ .CLKOUT3(clkout3),
35
+ .CLKOUT4(clkout4),
36
+ .CLKOUT5(clkout5),
37
+ .CLKOUT6(clkout6),
38
+ .CLKFBOUT(clkfbout),
39
+ .MDRDO(mdrdo),
40
+ .CLKIN(clkin),
41
+ .CLKFB(gw_gnd),
42
+ .RESET(reset),
43
+ .PLLPWD(gw_gnd),
44
+ .RESET_I(gw_gnd),
45
+ .RESET_O(gw_gnd),
46
+ .PSSEL({gw_gnd,gw_gnd,gw_gnd}),
47
+ .PSDIR(gw_gnd),
48
+ .PSPULSE(gw_gnd),
49
+ .SSCPOL(gw_gnd),
50
+ .SSCON(gw_gnd),
51
+ .SSCMDSEL({gw_gnd,gw_gnd,gw_gnd,gw_gnd,gw_gnd,gw_gnd,gw_gnd}),
52
+ .SSCMDSEL_FRAC({gw_gnd,gw_gnd,gw_gnd}),
53
+ .MDCLK(gw_gnd),
54
+ .MDOPC({gw_gnd,gw_gnd}),
55
+ .MDAINC(gw_gnd),
56
+ .MDWDI({gw_gnd,gw_gnd,gw_gnd,gw_gnd,gw_gnd,gw_gnd,gw_gnd,gw_gnd})
57
+ );
58
+
59
+ defparam PLLA_inst.FCLKIN = "33.554";
60
+ defparam PLLA_inst.IDIV_SEL = 1;
61
+ defparam PLLA_inst.FBDIV_SEL = 1;
62
+ defparam PLLA_inst.ODIV0_SEL = 6;
63
+ defparam PLLA_inst.ODIV1_SEL = 24;
64
+ defparam PLLA_inst.ODIV2_SEL = 48;
65
+ defparam PLLA_inst.ODIV3_SEL = 96;
66
+ defparam PLLA_inst.ODIV4_SEL = 12;
67
+ defparam PLLA_inst.ODIV5_SEL = 8;
68
+ defparam PLLA_inst.ODIV6_SEL = 8;
69
+ defparam PLLA_inst.MDIV_SEL = 24;
70
+ defparam PLLA_inst.MDIV_FRAC_SEL = 0;
71
+ defparam PLLA_inst.ODIV0_FRAC_SEL = 0;
72
+ defparam PLLA_inst.CLKOUT0_EN = "TRUE";
73
+ defparam PLLA_inst.CLKOUT1_EN = "TRUE";
74
+ defparam PLLA_inst.CLKOUT2_EN = "TRUE";
75
+ defparam PLLA_inst.CLKOUT3_EN = "TRUE";
76
+ defparam PLLA_inst.CLKOUT4_EN = "TRUE";
77
+ defparam PLLA_inst.CLKOUT5_EN = "FALSE";
78
+ defparam PLLA_inst.CLKOUT6_EN = "FALSE";
79
+ defparam PLLA_inst.CLKFB_SEL = "INTERNAL";
80
+ defparam PLLA_inst.CLKOUT0_DT_DIR = 1'b1;
81
+ defparam PLLA_inst.CLKOUT1_DT_DIR = 1'b1;
82
+ defparam PLLA_inst.CLKOUT2_DT_DIR = 1'b1;
83
+ defparam PLLA_inst.CLKOUT3_DT_DIR = 1'b1;
84
+ defparam PLLA_inst.CLKOUT0_DT_STEP = 0;
85
+ defparam PLLA_inst.CLKOUT1_DT_STEP = 0;
86
+ defparam PLLA_inst.CLKOUT2_DT_STEP = 0;
87
+ defparam PLLA_inst.CLKOUT3_DT_STEP = 0;
88
+ defparam PLLA_inst.CLK0_IN_SEL = 1'b0;
89
+ defparam PLLA_inst.CLK0_OUT_SEL = 1'b0;
90
+ defparam PLLA_inst.CLK1_IN_SEL = 1'b0;
91
+ defparam PLLA_inst.CLK1_OUT_SEL = 1'b0;
92
+ defparam PLLA_inst.CLK2_IN_SEL = 1'b0;
93
+ defparam PLLA_inst.CLK2_OUT_SEL = 1'b0;
94
+ defparam PLLA_inst.CLK3_IN_SEL = 1'b0;
95
+ defparam PLLA_inst.CLK3_OUT_SEL = 1'b0;
96
+ defparam PLLA_inst.CLK4_IN_SEL = 2'b00;
97
+ defparam PLLA_inst.CLK4_OUT_SEL = 1'b0;
98
+ defparam PLLA_inst.CLK5_IN_SEL = 1'b0;
99
+ defparam PLLA_inst.CLK5_OUT_SEL = 1'b0;
100
+ defparam PLLA_inst.CLK6_IN_SEL = 1'b0;
101
+ defparam PLLA_inst.CLK6_OUT_SEL = 1'b0;
102
+ defparam PLLA_inst.DYN_DPA_EN = "FALSE";
103
+ defparam PLLA_inst.CLKOUT0_PE_COARSE = 0;
104
+ defparam PLLA_inst.CLKOUT0_PE_FINE = 0;
105
+ defparam PLLA_inst.CLKOUT1_PE_COARSE = 0;
106
+ defparam PLLA_inst.CLKOUT1_PE_FINE = 0;
107
+ defparam PLLA_inst.CLKOUT2_PE_COARSE = 0;
108
+ defparam PLLA_inst.CLKOUT2_PE_FINE = 0;
109
+ defparam PLLA_inst.CLKOUT3_PE_COARSE = 0;
110
+ defparam PLLA_inst.CLKOUT3_PE_FINE = 0;
111
+ defparam PLLA_inst.CLKOUT4_PE_COARSE = 0;
112
+ defparam PLLA_inst.CLKOUT4_PE_FINE = 0;
113
+ defparam PLLA_inst.CLKOUT5_PE_COARSE = 0;
114
+ defparam PLLA_inst.CLKOUT5_PE_FINE = 0;
115
+ defparam PLLA_inst.CLKOUT6_PE_COARSE = 0;
116
+ defparam PLLA_inst.CLKOUT6_PE_FINE = 0;
117
+ defparam PLLA_inst.DYN_PE0_SEL = "FALSE";
118
+ defparam PLLA_inst.DYN_PE1_SEL = "FALSE";
119
+ defparam PLLA_inst.DYN_PE2_SEL = "FALSE";
120
+ defparam PLLA_inst.DYN_PE3_SEL = "FALSE";
121
+ defparam PLLA_inst.DYN_PE4_SEL = "FALSE";
122
+ defparam PLLA_inst.DYN_PE5_SEL = "FALSE";
123
+ defparam PLLA_inst.DYN_PE6_SEL = "FALSE";
124
+ defparam PLLA_inst.DE0_EN = "FALSE";
125
+ defparam PLLA_inst.DE1_EN = "FALSE";
126
+ defparam PLLA_inst.DE2_EN = "FALSE";
127
+ defparam PLLA_inst.DE3_EN = "FALSE";
128
+ defparam PLLA_inst.DE4_EN = "FALSE";
129
+ defparam PLLA_inst.DE5_EN = "FALSE";
130
+ defparam PLLA_inst.DE6_EN = "FALSE";
131
+ defparam PLLA_inst.RESET_I_EN = "FALSE";
132
+ defparam PLLA_inst.RESET_O_EN = "FALSE";
133
+ defparam PLLA_inst.ICP_SEL = 6'bXXXXXX;
134
+ defparam PLLA_inst.LPF_RES = 3'bXXX;
135
+ defparam PLLA_inst.LPF_CAP = 2'b00;
136
+ defparam PLLA_inst.SSC_EN = "FALSE";
137
+
138
+ endmodule //Gowin_PLL
ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/MultiPortRamCtrl.vhd ADDED
@@ -0,0 +1,219 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ -----------------------------------------------------------------
2
+ --------------- MultiPortPSRAM Package -------------------------
3
+ -----------------------------------------------------------------
4
+
5
+ library IEEE;
6
+ use IEEE.std_logic_1164.all;
7
+ use IEEE.numeric_std.all;
8
+
9
+ package pMultiPortPSRAM is
10
+
11
+ constant RAMPORTCOUNT : integer := 5;
12
+
13
+ type tRAMIn_request is array(0 to RAMPORTCOUNT - 1) of std_logic;
14
+ type tRAMIn_RnW is array(0 to RAMPORTCOUNT - 1) of std_logic;
15
+ type tRAMIn_addr is array(0 to RAMPORTCOUNT - 1) of std_logic_vector(22 downto 0);
16
+ type tRAMIn_din is array(0 to RAMPORTCOUNT - 1) of std_logic_vector(15 downto 0);
17
+ type tRAMIn_burst_length is array(0 to RAMPORTCOUNT - 1) of unsigned(10 downto 0);
18
+
19
+ type tRAMOut_writeNext is array(0 to RAMPORTCOUNT - 1) of std_logic;
20
+ type tRAMOut_done is array(0 to RAMPORTCOUNT - 1) of std_logic;
21
+ type tRAMOut_dout_valid is array(0 to RAMPORTCOUNT - 1) of std_logic;
22
+
23
+ end package;
24
+
25
+ -----------------------------------------------------------------
26
+ --------------- MultiPortPSRAM Mux ----------------------------
27
+ -----------------------------------------------------------------
28
+
29
+ library IEEE;
30
+ use IEEE.STD_LOGIC_1164.ALL;
31
+ use IEEE.numeric_std.all;
32
+
33
+ use work.pMultiPortPSRAM.all;
34
+
35
+ entity MultiPortRamCtrl is
36
+ generic
37
+ (
38
+ ISSIMU : boolean := false
39
+ );
40
+ port
41
+ (
42
+ clk_sys : in std_logic;
43
+ clk_fsys : in std_logic;
44
+ rst : in std_logic;
45
+
46
+ RAMIn_request : in tRAMIn_request;
47
+ RAMIn_RnW : in tRAMIn_RnW;
48
+ RAMIn_addr : in tRAMIn_addr;
49
+ RAMIn_din : in tRAMIn_din;
50
+ RAMIn_burst_length : in tRAMIn_burst_length;
51
+
52
+ RAMOut_writeNext : out tRAMOut_writeNext;
53
+ RAMOut_done : out tRAMOut_done;
54
+ RAMOut_dout_valid : out tRAMOut_dout_valid;
55
+
56
+ ram_ready : out std_logic;
57
+ ram_dout : out std_logic_vector(15 downto 0);
58
+
59
+ psram_clk : out std_logic;
60
+ psram_cs_n : out std_logic;
61
+ psram_rwds : inout std_logic := 'Z';
62
+ psram_dq : inout std_logic_vector(7 downto 0) := (others => 'Z')
63
+ );
64
+ end entity;
65
+
66
+ architecture arch of MultiPortRamCtrl is
67
+
68
+ -- statemachine
69
+ type tstate is
70
+ (
71
+ IDLE,
72
+ WAITRAM
73
+ );
74
+ signal state : tstate := IDLE;
75
+
76
+ signal rrb : integer range 0 to RAMPORTCOUNT - 1;
77
+ signal req_latched : std_logic_vector(0 to RAMPORTCOUNT) := (others => '0');
78
+ signal lastIndex : integer range 0 to RAMPORTCOUNT - 1;
79
+
80
+ -- controller
81
+ signal req_read : std_logic := '0';
82
+ signal req_write : std_logic := '0';
83
+ signal addr : std_logic_vector(22 downto 0) := (others => '0');
84
+ signal din : std_logic_vector(15 downto 0);
85
+ signal burst_length : unsigned(10 downto 0) := (others => '0'); -- in bytes
86
+
87
+ signal writeNext : std_logic;
88
+ signal done : std_logic;
89
+ signal dout_valid : std_logic;
90
+
91
+
92
+ begin
93
+
94
+ din <= RAMIn_din(lastIndex);
95
+
96
+ process (all)
97
+ begin
98
+
99
+ for i in 0 to RAMPORTCOUNT - 1 loop
100
+ RAMOut_done(i) <= '0';
101
+ RAMOut_dout_valid(i) <= '0';
102
+ RAMOut_writeNext(i) <= '0';
103
+ end loop;
104
+
105
+ if (state = WAITRAM) then
106
+ if (done = '1') then RAMOut_done(lastIndex) <= '1'; end if;
107
+ if (dout_valid = '1') then RAMOut_dout_valid(lastIndex) <= '1'; end if;
108
+ if (writeNext = '1') then RAMOut_writeNext(lastIndex) <= '1'; end if;
109
+ end if;
110
+
111
+ end process;
112
+
113
+ process (clk_sys)
114
+ variable activeRequest : std_logic;
115
+ variable activeIndex : integer range 0 to RAMPORTCOUNT - 1;
116
+ begin
117
+ if rising_edge(clk_sys) then
118
+
119
+ req_read <= '0';
120
+ req_write <= '0';
121
+
122
+ -- request handling -> any active, but round robin has priority
123
+ activeRequest := '0';
124
+ for i in 0 to RAMPORTCOUNT - 1 loop
125
+ if (RAMIn_request(i) = '1') then
126
+ req_latched(i) <= '1';
127
+ end if;
128
+
129
+ if (RAMIn_request(i) = '1' or req_latched(i) = '1') then
130
+ activeRequest := '1';
131
+ activeIndex := i;
132
+ end if;
133
+
134
+ end loop;
135
+
136
+ if (req_latched(rrb) = '1') then
137
+ activeIndex := rrb;
138
+ end if;
139
+
140
+
141
+ if (rst = '1') then
142
+
143
+ state <= IDLE;
144
+ req_latched <= (others => '0');
145
+
146
+ else
147
+
148
+ -- main statemachine
149
+ case (state) is
150
+ when IDLE =>
151
+
152
+ lastIndex <= activeIndex;
153
+
154
+ -- round robin
155
+ if (rrb < RAMPORTCOUNT - 1) then
156
+ rrb <= rrb + 1;
157
+ else
158
+ rrb <= 0;
159
+ end if;
160
+
161
+ if (activeRequest = '1' and ram_ready = '1') then
162
+
163
+ state <= WAITRAM;
164
+ req_latched(activeIndex) <= '0';
165
+
166
+ if (RAMIn_RnW(activeIndex) = '1') then
167
+ req_read <= '1';
168
+ else
169
+ req_write <= '1';
170
+ end if;
171
+
172
+ burst_length <= RAMIn_burst_length(activeIndex);
173
+ addr <= RAMIn_addr(activeIndex);
174
+
175
+ end if;
176
+
177
+ when WAITRAM =>
178
+ if (done = '1') then
179
+ state <= IDLE;
180
+ end if;
181
+
182
+ end case;
183
+
184
+ end if;
185
+
186
+ end if;
187
+ end process;
188
+
189
+ iPsramController : entity work.PSRAMController
190
+ generic map
191
+ (
192
+ ISSIMU => ISSIMU
193
+ )
194
+ port map
195
+ (
196
+ clk_sys => clk_sys,
197
+ clk_fsys => clk_fsys,
198
+ rst => rst,
199
+ req_read => req_read,
200
+ req_write => req_write,
201
+ addr => addr,
202
+ din => din,
203
+ burst_length => burst_length,
204
+
205
+ ready => ram_ready,
206
+ writeNext => writeNext,
207
+ dout => ram_dout,
208
+ dout_valid => dout_valid,
209
+ done => done,
210
+
211
+ psram_clk => psram_clk,
212
+ psram_rwds => psram_rwds,
213
+ psram_dq => psram_dq,
214
+ psram_cs_n => psram_cs_n
215
+ );
216
+
217
+ end architecture;
218
+
219
+
ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/PSRAMBIST_Burst.vhd ADDED
@@ -0,0 +1,174 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ library IEEE;
2
+ use IEEE.STD_LOGIC_1164.ALL;
3
+ use IEEE.numeric_std.all;
4
+
5
+ entity PSRAMBIST_Burst is
6
+ generic
7
+ (
8
+ BIST_BURSTLENGTH : integer range 1 to 512 := 512;
9
+ SHORTTEST : boolean := true
10
+ );
11
+ port
12
+ (
13
+ clk : in std_logic;
14
+ rst : in std_logic;
15
+
16
+ test_finished : out std_logic := '0';
17
+ test_failed : out std_logic := '0';
18
+
19
+ ram_req_read : out std_logic := '0';
20
+ ram_req_write : out std_logic := '0';
21
+ ram_addr : out std_logic_vector(22 downto 0) := (others => '0');
22
+ ram_din : out std_logic_vector(15 downto 0) := (others => '0');
23
+ burst_length : out unsigned(10 downto 0);
24
+ ram_ready : in std_logic;
25
+ ram_writeNext : in std_logic;
26
+ ram_done : in std_logic;
27
+ ram_dout : in std_logic_vector(15 downto 0);
28
+ ram_dout_valid : in std_logic
29
+ );
30
+ end entity;
31
+
32
+ architecture arch of PSRAMBIST_Burst is
33
+
34
+ type tState is
35
+ (
36
+ WRITE_START,
37
+ WRITE_WAIT,
38
+ READ_START,
39
+ READ_WAIT,
40
+ TESTDONE
41
+ );
42
+ signal state : tState := WRITE_START;
43
+
44
+ type tTesttype is
45
+ (
46
+ ALTERNATING,
47
+ COUNT,
48
+ ONES,
49
+ ZEROS
50
+ );
51
+ signal testtype : tTesttype := ALTERNATING;
52
+
53
+ signal addr_cnt : unsigned(21 downto 0) := (others => '0');
54
+ signal burst_cnt : unsigned(9 downto 0);
55
+
56
+ begin
57
+
58
+ burst_length <= to_unsigned(BIST_BURSTLENGTH * 2, 11);
59
+
60
+ process (clk)
61
+ begin
62
+ if rising_edge(clk) then
63
+
64
+ ram_req_read <= '0';
65
+ ram_req_write <= '0';
66
+
67
+ if (rst = '1') then
68
+ state <= WRITE_START;
69
+ testtype <= ALTERNATING;
70
+ addr_cnt <= (others => '0');
71
+ ram_din <= x"AA55";
72
+ test_finished <= '0';
73
+ test_failed <= '0';
74
+ else
75
+
76
+ case (state) is
77
+
78
+ when WRITE_START | READ_START =>
79
+ if (ram_ready = '1') then
80
+ if (state = WRITE_START) then
81
+ state <= WRITE_WAIT;
82
+ ram_req_write <= '1';
83
+ else
84
+ state <= READ_WAIT;
85
+ ram_req_read <= '1';
86
+ end if;
87
+
88
+ ram_addr <= std_logic_vector(addr_cnt) & '0';
89
+ addr_cnt <= addr_cnt + 1;
90
+ burst_cnt <= to_unsigned(BIST_BURSTLENGTH, 10);
91
+
92
+ if (SHORTTEST = true) then
93
+ addr_cnt <= addr_cnt + (512 * BIST_BURSTLENGTH) + 1;
94
+ end if;
95
+
96
+ case (testtype) is
97
+ when ALTERNATING => ram_din <= not ram_din;
98
+ when COUNT => ram_din <= std_logic_vector(addr_cnt(15 downto 0));
99
+ when ONES => ram_din <= (others => '1');
100
+ when ZEROS => ram_din <= (others => '0');
101
+ end case;
102
+ end if;
103
+
104
+ when WRITE_WAIT =>
105
+ if (ram_done = '1') then
106
+ state <= WRITE_START;
107
+ if ((SHORTTEST = true and addr_cnt(addr_cnt'left) = '1') or (SHORTTEST = false and addr_cnt = 0)) then
108
+ state <= READ_START;
109
+ addr_cnt <= (others => '0');
110
+ ram_din <= x"AA55";
111
+ end if;
112
+ end if;
113
+
114
+ if (ram_writeNext = '1') then
115
+ -- for debug/bring-up, not used by the controller
116
+ -- ram_addr <= std_logic_vector(unsigned(ram_addr) + 2);
117
+ if (SHORTTEST = false) then
118
+ addr_cnt <= addr_cnt + 1;
119
+ end if;
120
+ case (testtype) is
121
+ when ALTERNATING => ram_din <= not ram_din;
122
+ when COUNT => ram_din <= std_logic_vector(unsigned(ram_din) + 1);
123
+ when ONES => ram_din <= (others => '1');
124
+ when ZEROS => ram_din <= (others => '0');
125
+ end case;
126
+ end if;
127
+
128
+ when READ_WAIT =>
129
+ if (ram_done = '1') then
130
+ state <= READ_START;
131
+ if ((SHORTTEST = true and addr_cnt(addr_cnt'left) = '1') or (SHORTTEST = false and addr_cnt = 0)) then
132
+ state <= WRITE_START;
133
+ addr_cnt <= (others => '0');
134
+ case (testtype) is
135
+ when ALTERNATING => testtype <= COUNT;
136
+ when COUNT => testtype <= ONES;
137
+ when ONES => testtype <= ZEROS;
138
+ when ZEROS => state <= TESTDONE;
139
+ end case;
140
+ end if;
141
+ end if;
142
+
143
+ if (ram_dout_valid = '1') then
144
+ if (ram_done = '0') then
145
+ if (SHORTTEST = false) then
146
+ addr_cnt <= addr_cnt + 1;
147
+ end if;
148
+ case (testtype) is
149
+ when ALTERNATING => ram_din <= not ram_din;
150
+ when COUNT => ram_din <= std_logic_vector(unsigned(ram_din) + 1);
151
+ when ONES => ram_din <= (others => '1');
152
+ when ZEROS => ram_din <= (others => '0');
153
+ end case;
154
+ end if;
155
+
156
+ if (ram_dout /= ram_din) then
157
+ test_failed <= '1';
158
+ end if;
159
+
160
+ end if;
161
+
162
+ when TESTDONE =>
163
+ test_finished <= '1';
164
+
165
+ end case;
166
+
167
+ end if;
168
+
169
+ end if;
170
+ end process;
171
+
172
+ end architecture;
173
+
174
+
ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/PSRAMController.vhd ADDED
@@ -0,0 +1,716 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ library IEEE;
2
+ use IEEE.STD_LOGIC_1164.ALL;
3
+ use IEEE.numeric_std.all;
4
+
5
+ entity PSRAMController is
6
+ generic
7
+ (
8
+ ISSIMU : boolean := false;
9
+
10
+ IODELAY_SETTING : integer_vector := (
11
+ 0 => 0, -- DQ0
12
+ 1 => 0, -- DQ1
13
+ 2 => 0, -- DQ2
14
+ 3 => 0, -- DQ3
15
+ 4 => 0, -- DQ4
16
+ 5 => 0, -- DQ5
17
+ 6 => 0, -- DQ6
18
+ 7 => 0, -- DQ7
19
+ 8 => 0, -- CLK
20
+ 9 => 0, -- CS_N,
21
+ 10 => 0 -- RWDS,
22
+ );
23
+
24
+ READLATENCY : integer range 3 to 7 := 5; -- verified in simulation for all options
25
+ WRITELATENCY : integer range 3 to 7 := 5; -- verified in simulation for all options
26
+ CFG0_LT : std_logic := '0'; -- default startup values, changes not verified
27
+ CFG0_DRIVESTRENGTH : std_logic_vector(1 downto 0) := "00"; -- testing increased drive strength (01 is default)
28
+ CFG4_RF : std_logic := '0'; -- default startup values, changes not verified
29
+ CFG4_PASR : std_logic_vector(2 downto 0) := "000"; -- default startup values, changes not verified
30
+ CFG8_RBX : std_logic := '1'; -- read across 1k border
31
+ CFG8_BT : std_logic := '1'; -- default startup values, changes not verified
32
+ CFG8_BL : std_logic_vector(1 downto 0) := "11" -- increase to 1k byte wrap (01 default)
33
+ );
34
+ port
35
+ (
36
+ clk_sys : in std_logic;
37
+ clk_fsys : in std_logic;
38
+ rst : in std_logic;
39
+
40
+ req_read : in std_logic;
41
+ req_write : in std_logic;
42
+ addr : in std_logic_vector(22 downto 0);
43
+ din : in std_logic_vector(15 downto 0);
44
+ burst_length : in unsigned(10 downto 0); -- in bytes
45
+
46
+ cfg_0_LT : out std_logic;
47
+ cfg_0_readLatency : out std_logic_vector(2 downto 0);
48
+ cfg_0_driveStrength : out std_logic_vector(1 downto 0);
49
+ cfg_1_ULP : out std_logic;
50
+ cfg_1_VendorID : out std_logic_vector(4 downto 0);
51
+ cfg_2_GB : out std_logic;
52
+ cfg_2_DevID : out std_logic_vector(1 downto 0);
53
+ cfg_2_Density : out std_logic_vector(2 downto 0);
54
+ cfg_3_RBXen : out std_logic;
55
+ cfg_3_VCC : out std_logic;
56
+ cfg_3_SRF : out std_logic;
57
+ cfg_4_writeLatency : out std_logic_vector(2 downto 0);
58
+ cfg_4_RF : out std_logic;
59
+ cfg_4_PASR : out std_logic_vector(2 downto 0);
60
+ cfg_8_RBX : out std_logic;
61
+ cfg_8_BT : out std_logic;
62
+ cfg_8_BL : out std_logic_vector(1 downto 0);
63
+
64
+ ready : out std_logic := '0';
65
+ writeNext : out std_logic := '0';
66
+ done : out std_logic := '0';
67
+ dout_valid : out std_logic := '0';
68
+ dout : out std_logic_vector(15 downto 0) := (others => '0');
69
+
70
+ psram_clk : out std_logic;
71
+ psram_cs_n : out std_logic;
72
+ psram_rwds : inout std_logic := 'Z';
73
+ psram_dq : inout std_logic_vector(7 downto 0) := (others => 'Z')
74
+ );
75
+ end entity;
76
+
77
+ architecture arch of PSRAMController is
78
+
79
+ type tState is
80
+ (
81
+ RESET,
82
+ CONFIGWRITE_NEXT,
83
+ CONFIGWRITE_START,
84
+ CONFIGWRITE,
85
+ CONFIGREAD_NEXT,
86
+ CONFIGREAD_START,
87
+ CONFIGREAD,
88
+ IDLE,
89
+ READING,
90
+ READVAL,
91
+ WRITING,
92
+ WRITE_NEWROW
93
+ );
94
+ signal state : tState := RESET;
95
+
96
+ signal configwrite_addr : std_logic_vector(3 downto 0) := x"0";
97
+ signal configread_addr : std_logic_vector(3 downto 0) := x"0";
98
+
99
+ signal startup_cnt : integer range 0 to 50000 := 0; -- adjust for clock speed
100
+
101
+ signal dq_shiftreg : std_logic_vector(63 downto 0) := (others => '0');
102
+ signal step : integer range 0 to 15;
103
+
104
+ signal burst_count : unsigned(10 downto 0);
105
+ signal writeburst : std_logic := '0';
106
+ signal addr_nextRow : std_logic_vector(12 downto 0);
107
+ signal row_count : unsigned(8 downto 0);
108
+
109
+ signal clock_ena : std_logic := '0';
110
+ signal oe_dq_n : std_logic := '1';
111
+ signal oe_rwds_n : std_logic := '1';
112
+ signal cs_ena_n : std_logic := '1';
113
+
114
+ signal rwds_out_rising : std_logic := '1';
115
+ signal rwds_out_falling : std_logic := '1';
116
+
117
+ signal rwds_in_Q : std_logic_vector(3 downto 0);
118
+
119
+ signal psram_dq_o : std_logic_vector(7 downto 0);
120
+
121
+ signal dq_in_adjustH : std_logic_vector(7 downto 0);
122
+ signal dq_in_adjustL : std_logic_vector(7 downto 0);
123
+
124
+ signal dq_in_Q0 : std_logic_vector(7 downto 0);
125
+ signal dq_in_Q1 : std_logic_vector(7 downto 0);
126
+ signal dq_in_Q2 : std_logic_vector(7 downto 0);
127
+ signal dq_in_Q3 : std_logic_vector(7 downto 0);
128
+
129
+ signal oddr_rwds_data : std_logic;
130
+ signal oddr_rwds_enaN : std_logic;
131
+ signal oddr_dq_data : std_logic_vector(7 downto 0);
132
+ signal oddr_dq_data_dly : std_logic_vector(7 downto 0);
133
+ signal oddr_dq_enaN : std_logic_vector(7 downto 0);
134
+
135
+ signal psram_clk_dly : std_logic;
136
+ signal psram_cs_n_dly : std_logic;
137
+ signal oddr_rwds_data_dly : std_logic;
138
+ signal psram_rwds_o : std_logic;
139
+
140
+ signal receiving_data : std_logic;
141
+
142
+ component IDDR is
143
+ PORT (
144
+ Q0 : OUT std_logic;
145
+ Q1 : OUT std_logic;
146
+ D : IN std_logic;
147
+ CLK: IN std_logic
148
+ );
149
+ end component;
150
+
151
+ component IDES4 is
152
+ PORT (
153
+ D : IN std_logic;
154
+ FCLK : IN std_logic;
155
+ PCLK : IN std_logic;
156
+ CALIB : IN std_logic;
157
+ RESET : IN std_logic;
158
+ Q0 : OUT std_logic;
159
+ Q1 : OUT std_logic;
160
+ Q2 : OUT std_logic;
161
+ Q3 : OUT std_logic
162
+ );
163
+ end component;
164
+
165
+ component OSER4 is
166
+ GENERIC (
167
+ HWL : string := "false"; --"true"; "false"
168
+ TXCLK_POL : bit := '0' --'0':Rising edge output; '1':Falling edge output
169
+ );
170
+ PORT (
171
+ D0 : IN std_logic;
172
+ D1 : IN std_logic;
173
+ D2 : IN std_logic;
174
+ D3 : IN std_logic;
175
+ TX0 : IN std_logic; -- active low
176
+ TX1 : IN std_logic; -- active low
177
+ FCLK : IN std_logic;
178
+ PCLK : IN std_logic;
179
+ RESET : IN std_logic;
180
+ Q0 : OUT std_logic;
181
+ Q1 : OUT std_logic
182
+ );
183
+ end component;
184
+
185
+ component ODDR is
186
+ GENERIC (
187
+ TXCLK_POL : bit := '0' --'0':Rising edge output; '1':Falling edge output
188
+ );
189
+ PORT (
190
+ Q0 : OUT std_logic;
191
+ Q1 : OUT std_logic;
192
+ D0 : IN std_logic;
193
+ D1 : IN std_logic;
194
+ TX : IN std_logic;
195
+ CLK : IN std_logic
196
+ );
197
+ end component;
198
+
199
+ component IODELAY is
200
+ GENERIC (
201
+ C_STATIC_DLY : integer:=0
202
+ );
203
+ PORT (
204
+ DO : OUT std_logic;
205
+ DF : OUT std_logic;
206
+ DI : IN std_logic;
207
+ SDTAP : IN std_logic;
208
+ DLYSTEP : IN std_logic_vector(7 downto 0);
209
+ VALUE : IN std_logic
210
+ );
211
+ end component;
212
+
213
+ begin
214
+
215
+ u_iodelay_psram_cs_n : IODELAY
216
+ generic map
217
+ (
218
+ C_STATIC_DLY => IODELAY_SETTING(9)
219
+ )
220
+ port map
221
+ (
222
+ DO => psram_cs_n,
223
+ DF => open,
224
+ DI => psram_cs_n_dly,
225
+ SDTAP => '0',
226
+ DLYSTEP => 8x"0",
227
+ VALUE => '0'
228
+ );
229
+
230
+ oser4_psram_cs_n : OSER4 port map
231
+ (
232
+ PCLK => clk_sys,
233
+ FCLK => clk_fsys,
234
+ RESET => rst,
235
+ TX0 => '0',
236
+ TX1 => '0',
237
+ D0 => cs_ena_n,
238
+ D1 => cs_ena_n,
239
+ D2 => cs_ena_n,
240
+ D3 => cs_ena_n,
241
+ Q0 => psram_cs_n_dly,
242
+ Q1 => open
243
+ );
244
+
245
+ u_iodelay_psram_clk : IODELAY
246
+ generic map
247
+ (
248
+ C_STATIC_DLY => IODELAY_SETTING(8)
249
+ )
250
+ port map
251
+ (
252
+ DO => psram_clk,
253
+ DF => open,
254
+ DI => psram_clk_dly,
255
+ SDTAP => '0',
256
+ DLYSTEP => 8x"0",
257
+ VALUE => '0'
258
+ );
259
+
260
+ oser4_psram_clk : OSER4 port map
261
+ (
262
+ PCLK => clk_sys,
263
+ FCLK => clk_fsys,
264
+ RESET => rst,
265
+ TX0 => '0',
266
+ TX1 => '0',
267
+ D0 => '0',
268
+ D1 => clock_ena,
269
+ D2 => clock_ena,
270
+ D3 => '0',
271
+ Q0 => psram_clk_dly,
272
+ Q1 => open
273
+ );
274
+
275
+ u_iodelay_psram_rwds : IODELAY
276
+ generic map
277
+ (
278
+ C_STATIC_DLY => IODELAY_SETTING(10)
279
+ )
280
+ port map
281
+ (
282
+ DO => oddr_rwds_data,
283
+ DF => open,
284
+ DI => oddr_rwds_data_dly,
285
+ SDTAP => '0',
286
+ DLYSTEP => 8x"0",
287
+ VALUE => '0'
288
+ );
289
+
290
+ oser4_psram_rwds : OSER4 port map
291
+ (
292
+ PCLK => clk_sys,
293
+ FCLK => clk_fsys,
294
+ RESET => rst,
295
+ TX0 => oe_rwds_n,
296
+ TX1 => oe_rwds_n,
297
+ D0 => rwds_out_rising,
298
+ D1 => rwds_out_rising,
299
+ D2 => rwds_out_falling,
300
+ D3 => rwds_out_falling,
301
+ Q0 => oddr_rwds_data_dly,
302
+ Q1 => oddr_rwds_enaN
303
+ );
304
+
305
+ psram_rwds <= oddr_rwds_data when (oddr_rwds_enaN = '0') else 'Z';
306
+
307
+ gdq : for i in 0 to 7 generate
308
+ begin
309
+
310
+ u_iodelay_dq : IODELAY
311
+ generic map
312
+ (
313
+ C_STATIC_DLY => IODELAY_SETTING(i)
314
+ )
315
+ port map
316
+ (
317
+ DO => oddr_dq_data_dly(i),
318
+ DF => open,
319
+ DI => oddr_dq_data(i),
320
+ SDTAP => '0',
321
+ DLYSTEP => 8x"0",
322
+ VALUE => '0'
323
+ );
324
+
325
+ oser4_dq : OSER4
326
+ generic map
327
+ (
328
+ HWL => "false",
329
+ TXCLK_POL => '0'
330
+ )
331
+ port map
332
+ (
333
+ PCLK => clk_sys,
334
+ FCLK => clk_fsys,
335
+ RESET => rst,
336
+ TX0 => oe_dq_n,
337
+ TX1 => oe_dq_n,
338
+ D0 => dq_shiftreg(56 + i),
339
+ D1 => dq_shiftreg(56 + i),
340
+ D2 => dq_shiftreg(48 + i),
341
+ D3 => dq_shiftreg(48 + i),
342
+ Q0 => oddr_dq_data(i),
343
+ Q1 => oddr_dq_enaN(i)
344
+ );
345
+ psram_dq(i) <= oddr_dq_data_dly(i) when (oddr_dq_enaN(i) = '0') else 'Z';
346
+ /*
347
+ -- Cleanup L/H from memory sim model
348
+ process (psram_dq(i))
349
+ begin
350
+ case psram_dq(i) is
351
+ when 'L' => psram_dq_o(i) <= '0';
352
+ when 'H' => psram_dq_o(i) <= '1';
353
+ when others => psram_dq_o(i) <= psram_dq(i);
354
+ end case;
355
+ end process;
356
+ */
357
+ -- Register these here to improve timing
358
+ process (clk_sys)
359
+ begin
360
+ if rising_edge(clk_sys) then
361
+ -- Delay enable by 1 cycle
362
+ if (rst = '1') then
363
+ receiving_data <= '0';
364
+ else
365
+ if(rwds_in_Q(2) or rwds_in_Q(0)) then
366
+ receiving_data <= '1';
367
+ else
368
+ receiving_data <= '0';
369
+ end if;
370
+ end if;
371
+
372
+ case rwds_in_Q is
373
+ when "0011" =>
374
+ if (ISSIMU = true) then
375
+ if (dq_in_Q1(0) /= '0' and dq_in_Q1(0) /= '1') then
376
+ dq_in_adjustL <= x"AB";
377
+ dq_in_adjustH <= x"CD";
378
+ else
379
+ dq_in_adjustL <= dq_in_Q1;
380
+ dq_in_adjustH <= dq_in_Q3;
381
+ end if;
382
+ else
383
+ dq_in_adjustL <= dq_in_Q0;
384
+ dq_in_adjustH <= dq_in_Q2;
385
+ end if;
386
+ when "0001" =>
387
+ dq_in_adjustL <= dq_in_Q0;
388
+ dq_in_adjustH <= dq_in_Q2;
389
+ when "1001" =>
390
+ dq_in_adjustL <= dq_in_Q0;
391
+ dq_in_adjustH <= dq_in_Q2;
392
+ when "0110" =>
393
+ dq_in_adjustL <= dq_in_Q1;
394
+ dq_in_adjustH <= dq_in_Q3;
395
+ when others =>
396
+ dq_in_adjustL <= dq_in_Q3;
397
+ dq_in_adjustH <= dq_in_Q2;
398
+ end case;
399
+ end if;
400
+ end process;
401
+
402
+ ides4_dq : IDES4 port map
403
+ (
404
+ D => psram_dq(i),
405
+ PCLK => clk_sys,
406
+ FCLK => clk_fsys,
407
+ CALIB => '0',
408
+ RESET => rst,
409
+ Q0 => dq_in_Q0(i),
410
+ Q1 => dq_in_Q1(i),
411
+ Q2 => dq_in_Q2(i),
412
+ Q3 => dq_in_Q3(i)
413
+ );
414
+
415
+ end generate;
416
+ /*
417
+ -- Cleanup L/H from memory sim model
418
+ process (psram_rwds)
419
+ begin
420
+ case psram_rwds is
421
+ when 'L' => psram_rwds_o <= '0';
422
+ when 'H' => psram_rwds_o <= '1';
423
+ when others => psram_rwds_o <= psram_rwds;
424
+ end case;
425
+ end process;
426
+ */
427
+ ides4_psram_rwds : IDES4 port map
428
+ (
429
+ D => psram_rwds,
430
+ PCLK => clk_sys,
431
+ FCLK => clk_fsys,
432
+ CALIB => '0',
433
+ RESET => rst,
434
+ Q0 => rwds_in_Q(0),
435
+ Q1 => rwds_in_Q(1),
436
+ Q2 => rwds_in_Q(2),
437
+ Q3 => rwds_in_Q(3)
438
+ );
439
+
440
+ ready <= '1' when (state = IDLE and cfg_1_VendorID = 5x"0D") else '0';
441
+
442
+ writeNext <= '1' when (state = WRITING and writeburst = '1' and burst_count > 2) else '0';
443
+
444
+ process (clk_sys)
445
+ begin
446
+ if rising_edge(clk_sys) then
447
+
448
+ done <= '0';
449
+ dout_valid <= '0';
450
+ dq_shiftreg <= dq_shiftreg(47 downto 0) & 16x"0";
451
+
452
+ if (step < 15) then
453
+ step <= step + 1;
454
+ end if;
455
+
456
+ if (rst = '1') then
457
+ state <= RESET;
458
+ startup_cnt <= 0;
459
+ configread_addr <= x"0";
460
+ configwrite_addr <= x"F";
461
+ step <= 0;
462
+ cs_ena_n <= '1';
463
+ clock_ena <= '0';
464
+ oe_dq_n <= '1';
465
+ oe_rwds_n <= '1';
466
+ else
467
+
468
+ case (state) is
469
+
470
+ when RESET =>
471
+ if (startup_cnt < 50000) then
472
+ startup_cnt <= startup_cnt + 1;
473
+ else
474
+ state <= CONFIGWRITE_NEXT;
475
+ step <= 0;
476
+ end if;
477
+
478
+ when CONFIGWRITE_NEXT =>
479
+ if (step >= 8) then
480
+ state <= CONFIGWRITE_START;
481
+ cs_ena_n <= '0';
482
+ step <= 0;
483
+ end if;
484
+
485
+ when CONFIGWRITE_START =>
486
+ state <= CONFIGWRITE;
487
+ dq_shiftreg <= x"C0C0000000000000";
488
+ oe_dq_n <= '0';
489
+ clock_ena <= '1';
490
+ dq_shiftreg(19 downto 16) <= configwrite_addr;
491
+ case (configwrite_addr) is
492
+
493
+ when x"F" =>
494
+ dq_shiftreg <= (others => '1');
495
+
496
+ when x"0" =>
497
+ dq_shiftreg(15 downto 8) <= "00" & CFG0_LT & std_logic_vector(to_unsigned(READLATENCY - 3,3)) & CFG0_DRIVESTRENGTH;
498
+
499
+ when x"4" =>
500
+ dq_shiftreg(15 downto 8) <= "0000" & CFG4_RF & CFG4_PASR;
501
+ case (WRITELATENCY) is
502
+ when 3 => dq_shiftreg(15 downto 13) <= "000";
503
+ when 4 => dq_shiftreg(15 downto 13) <= "100";
504
+ when 5 => dq_shiftreg(15 downto 13) <= "010";
505
+ when 6 => dq_shiftreg(15 downto 13) <= "110";
506
+ when 7 => dq_shiftreg(15 downto 13) <= "001";
507
+ when others => null;
508
+ end case;
509
+
510
+ when x"8" =>
511
+ dq_shiftreg(15 downto 8) <= "0000" & CFG8_RBX & CFG8_BT & CFG8_BL;
512
+
513
+ when others => null;
514
+
515
+ end case;
516
+
517
+ when CONFIGWRITE =>
518
+ if (step = 4) then
519
+
520
+ state <= CONFIGWRITE_NEXT;
521
+ clock_ena <= '0';
522
+ oe_dq_n <= '1';
523
+ cs_ena_n <= '1';
524
+
525
+ case (configwrite_addr) is
526
+
527
+ when x"F" =>
528
+ configwrite_addr <= x"0";
529
+ state <= RESET;
530
+ startup_cnt <= 0;
531
+
532
+ when x"0" =>
533
+ configwrite_addr <= x"4";
534
+
535
+ when x"4" =>
536
+ configwrite_addr <= x"8";
537
+
538
+ when x"8" =>
539
+ state <= CONFIGREAD_NEXT;
540
+
541
+ when others => null;
542
+
543
+ end case;
544
+
545
+ end if;
546
+
547
+ when CONFIGREAD_NEXT =>
548
+ if (step >= 8) then
549
+ state <= CONFIGREAD_START;
550
+ cs_ena_n <= '0';
551
+ step <= 0;
552
+ end if;
553
+
554
+ when CONFIGREAD_START =>
555
+ state <= CONFIGREAD;
556
+ dq_shiftreg <= x"4040000000000000";
557
+ oe_dq_n <= '0';
558
+ clock_ena <= '1';
559
+ dq_shiftreg(19 downto 16) <= configread_addr;
560
+
561
+ when CONFIGREAD =>
562
+ if (step = 3) then
563
+ oe_dq_n <= '1';
564
+ end if;
565
+ if (step > 9 and receiving_data = '1') then
566
+
567
+ state <= CONFIGREAD_NEXT;
568
+ step <= 0;
569
+ cs_ena_n <= '1';
570
+ clock_ena <= '0';
571
+
572
+ case (configread_addr) is
573
+ when x"0" =>
574
+ configread_addr <= x"1";
575
+ cfg_0_LT <= dq_in_adjustL(5);
576
+ cfg_0_readLatency <= dq_in_adjustL(4 downto 2);
577
+ cfg_0_driveStrength <= dq_in_adjustL(1 downto 0);
578
+
579
+ when x"1" =>
580
+ configread_addr <= x"2";
581
+ cfg_1_ULP <= dq_in_adjustL(7);
582
+ cfg_1_VendorID <= dq_in_adjustL(4 downto 0);
583
+
584
+ when x"2" =>
585
+ configread_addr <= x"3";
586
+ cfg_2_GB <= dq_in_adjustL(7);
587
+ cfg_2_DevID <= dq_in_adjustL(4 downto 3);
588
+ cfg_2_Density <= dq_in_adjustL(2 downto 0);
589
+
590
+ when x"3" =>
591
+ configread_addr <= x"4";
592
+ cfg_3_RBXen <= dq_in_adjustL(7);
593
+ cfg_3_VCC <= dq_in_adjustL(6);
594
+ cfg_3_SRF <= dq_in_adjustL(5);
595
+
596
+ when x"4" =>
597
+ configread_addr <= x"8";
598
+ cfg_4_writeLatency <= dq_in_adjustL(7 downto 5);
599
+ cfg_4_RF <= dq_in_adjustL(3);
600
+ cfg_4_PASR <= dq_in_adjustL(2 downto 0);
601
+
602
+ when x"8" =>
603
+ state <= IDLE;
604
+ cfg_8_RBX <= dq_in_adjustL(3);
605
+ cfg_8_BT <= dq_in_adjustL(2);
606
+ cfg_8_BL <= dq_in_adjustL(1 downto 0);
607
+
608
+ when others => null;
609
+
610
+ end case;
611
+ end if;
612
+
613
+ when IDLE =>
614
+ oe_rwds_n <= '1';
615
+ oe_dq_n <= '1';
616
+ clock_ena <= '0';
617
+ cs_ena_n <= '1';
618
+ writeburst <= '0';
619
+ burst_count <= burst_length;
620
+ addr_nextRow <= std_logic_vector(unsigned(addr(22 downto 10)) + 1);
621
+ row_count <= 9x"1FF" - unsigned(addr(9 downto 1));
622
+ if (req_read = '1' or req_write = '1') then
623
+ if (req_read = '1') then
624
+ state <= READING;
625
+ dq_shiftreg(63 downto 48) <= x"2020";
626
+ else
627
+ state <= WRITING;
628
+ dq_shiftreg(63 downto 48) <= x"A0A0";
629
+ end if;
630
+ dq_shiftreg(47 downto 0) <= 9x"0" & addr(22 downto 1) & '0' & 16x"0";
631
+ cs_ena_n <= '0';
632
+ clock_ena <= '1';
633
+ oe_dq_n <= '0';
634
+ step <= 1;
635
+ end if;
636
+
637
+ when READING =>
638
+ if (step = 3) then
639
+ oe_dq_n <= '1';
640
+ elsif (step > 9 and rwds_in_Q(3) /= rwds_in_Q(1)) then
641
+ if (burst_count = 1) then
642
+ state <= IDLE;
643
+ done <= '1';
644
+ cs_ena_n <= '1';
645
+ clock_ena <= '0';
646
+ else
647
+ state <= READVAL;
648
+ end if;
649
+ end if;
650
+
651
+ when READVAL =>
652
+ if (receiving_data = '1') then
653
+ dout_valid <= '1';
654
+ dout <= dq_in_adjustH & dq_in_adjustL;
655
+ if (burst_count <= 2) then
656
+ state <= IDLE;
657
+ done <= '1';
658
+ cs_ena_n <= '1';
659
+ clock_ena <= '0';
660
+ else
661
+ burst_count <= burst_count - 2;
662
+ end if;
663
+ end if;
664
+
665
+ when WRITING =>
666
+ if (step = 1 + WRITELATENCY) then
667
+ writeburst <= '1';
668
+ end if;
669
+ if (writeburst = '1') then
670
+ oe_dq_n <= '0';
671
+ oe_rwds_n <= '0';
672
+ rwds_out_rising <= '0'; --todo: byte mask together with addr bit 0 in case of single byte write
673
+ rwds_out_falling <= '0'; --todo: byte mask together with addr bit 0 in case of single byte write
674
+ dq_shiftreg(63 downto 48) <= din(7 downto 0) & din(15 downto 8);
675
+
676
+ row_count <= row_count - 1;
677
+ if (row_count = 0) then
678
+ state <= WRITE_NEWROW;
679
+ writeburst <= '0';
680
+ step <= 0;
681
+ end if;
682
+
683
+ if (burst_count <= 2) then
684
+ state <= IDLE;
685
+ done <= '1';
686
+ else
687
+ burst_count <= burst_count - 2;
688
+ end if;
689
+ end if;
690
+
691
+ when WRITE_NEWROW =>
692
+ oe_dq_n <= '1';
693
+ oe_rwds_n <= '1';
694
+ clock_ena <= '0';
695
+ cs_ena_n <= '1';
696
+ if (step = 4) then
697
+ state <= WRITING;
698
+ dq_shiftreg(63 downto 48) <= x"A0A0";
699
+ dq_shiftreg(47 downto 0) <= 9x"0" & addr_nextRow & 10x"0" & 16x"0";
700
+ cs_ena_n <= '0';
701
+ clock_ena <= '1';
702
+ oe_dq_n <= '0';
703
+ step <= 1;
704
+ end if;
705
+
706
+
707
+ end case;
708
+
709
+ end if;
710
+
711
+ end if;
712
+ end process;
713
+
714
+ end architecture;
715
+
716
+
ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/ST7785_init.v ADDED
@@ -0,0 +1,181 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ module ST7785_init #(parameter ISSIMU=0)
2
+ (
3
+ input clk,
4
+ input reset,
5
+ output LCD_SCK,
6
+ output reg LCD_CS,
7
+ output reg LCD_SDA_SDI,
8
+ output reg LCD_RST,
9
+ output reg LCD_INIT_DONE
10
+ );
11
+
12
+ parameter CLK_DIV_2N = 6;
13
+
14
+ wire clk_out_ne;
15
+ clock_div #(
16
+ .DIV_2N(CLK_DIV_2N))
17
+ c1 (
18
+ .clk_in(clk),
19
+ .reset(reset),
20
+ .clk_out(sck),
21
+ .clk_out_ne(clk_out_ne)
22
+ );
23
+
24
+ reg cs;
25
+ assign LCD_SCK = ~cs ? sck : 1'd0;
26
+
27
+ localparam DATA_MAX_CNT = 127;
28
+
29
+ wire[23:0] RESETSTART = ISSIMU ? 2000 : 0;
30
+ wire[23:0] RESETEND = ISSIMU ? 3000 : 80000;
31
+ wire[23:0] DELAYMAX = ISSIMU ? 5000 : 90000;
32
+ wire[17:0] DELAYEND = ISSIMU ? 18'd500 : 18'd2560;
33
+
34
+ reg[8:0] sets[127:0] /* synthesis syn_romstyle = "distributed_rom" */;
35
+ reg[6:0] data_cnt;
36
+ reg[4:0] bit_cnt;
37
+ reg[23:0] delay_cnt;
38
+
39
+ initial begin
40
+ $readmemb("regs.bin", sets);
41
+ end
42
+
43
+ always @(posedge clk or posedge reset) begin
44
+ if(reset)
45
+ LCD_RST <= 1'd1;
46
+ else
47
+ if(clk_out_ne)
48
+ case (delay_cnt)
49
+ RESETSTART: LCD_RST <= 0;
50
+ RESETEND : LCD_RST <= 1;
51
+ endcase
52
+ end
53
+
54
+ always @(posedge clk)
55
+ if(clk_out_ne)
56
+ if ((data_cnt < DATA_MAX_CNT) && (delay_cnt == DELAYMAX))
57
+ begin
58
+ if (bit_cnt < 9)
59
+ bit_cnt <= bit_cnt + 1'd1;
60
+ else
61
+ bit_cnt <= 'd0;
62
+ end
63
+ else
64
+ bit_cnt <= 'd0;
65
+
66
+ reg [8:0] txdata;
67
+ always@(posedge clk)
68
+ if(clk_out_ne)
69
+ txdata <= sets[data_cnt];
70
+
71
+ reg [17:0] delay_cnt2;
72
+
73
+ reg [7:0] datasr;
74
+ reg [7:0] max_cnt;
75
+ always@(posedge clk)
76
+ begin
77
+ LCD_CS <= cs;
78
+ end
79
+
80
+ always@(posedge clk)
81
+ if(clk_out_ne)
82
+ begin
83
+ if(delay_cnt != DELAYMAX)
84
+ begin
85
+ data_cnt <= 'd0;
86
+ datasr <= 'd0;
87
+ cs <= 'd1;
88
+ LCD_SDA_SDI <= 'd0;
89
+ delay_cnt2 <= 'd0;
90
+ max_cnt <= DATA_MAX_CNT - 'd4;
91
+ end
92
+ else
93
+ if(bit_cnt == 0)
94
+ begin
95
+ if (data_cnt < max_cnt)
96
+ begin
97
+ cs <= 1'd0;
98
+ datasr <= txdata[7:0];
99
+ LCD_SDA_SDI <= txdata[8];
100
+ data_cnt <= data_cnt + 1'd1;
101
+ end
102
+ else
103
+ begin
104
+ cs <= 1'd1;
105
+ if(delay_cnt2 < DELAYEND)
106
+ delay_cnt2 <= delay_cnt2 + 1'd1;
107
+ else
108
+ max_cnt <= DATA_MAX_CNT;
109
+ end
110
+ end
111
+ else
112
+ begin
113
+ if(bit_cnt < 9)
114
+ begin
115
+ datasr <= {datasr[6:0], 1'd0};
116
+ LCD_SDA_SDI <= datasr[7];
117
+ end
118
+ else
119
+ begin
120
+ cs <= 1'd1;
121
+ end
122
+ end
123
+ end
124
+
125
+ always @(posedge clk or posedge reset)
126
+ if(reset)
127
+ delay_cnt <= 'd0;
128
+ else
129
+ if(clk_out_ne)
130
+ if (delay_cnt < DELAYMAX)
131
+ delay_cnt <= delay_cnt + 1'd1;
132
+
133
+ always@(posedge clk or posedge reset)
134
+ if(reset)
135
+ LCD_INIT_DONE <= 1'd0;
136
+ else
137
+ if(data_cnt < DATA_MAX_CNT)
138
+ LCD_INIT_DONE <= 1'd0;
139
+ else
140
+ LCD_INIT_DONE <= 1'd1;
141
+
142
+ endmodule
143
+
144
+ module clock_div
145
+ #(
146
+ parameter SIZE = 8,
147
+ parameter DIV_2N = 1
148
+ )
149
+ (
150
+ input clk_in,
151
+ input reset,
152
+ output reg clk_out = 'd0,
153
+ output reg clk_out_ne,
154
+ output reg clk_out_pe
155
+ );
156
+
157
+ reg [SIZE - 1:0] counter = DIV_2N - 1;
158
+
159
+ always @(posedge clk_in) begin
160
+ if(reset)
161
+ begin
162
+ counter <= 'd0;
163
+ clk_out <= 'd0;
164
+ clk_out_ne <= 1'd0;
165
+
166
+ end
167
+ else
168
+ begin
169
+ clk_out_ne <= 1'd0;
170
+
171
+ if (counter == 0) begin
172
+ counter <= DIV_2N - 1;
173
+ clk_out <= !clk_out;
174
+ if(~clk_out)
175
+ clk_out_ne <= 1'd1;
176
+ end
177
+ else
178
+ counter <= counter - 'd1;
179
+ end
180
+ end
181
+ endmodule
ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/ST7785_panel_master.v ADDED
@@ -0,0 +1,267 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ module ST7785_panel_master(
2
+ input gClk,
3
+ input nRST,
4
+
5
+ input hClk,
6
+ input [17:0] hColorPixel,
7
+ input [17:0] hColorPixelUVC,
8
+ input lcd_on,
9
+ input hVsync,
10
+ input hHsync,
11
+ input hValid,
12
+ input LCD_EN,
13
+ output reg LCD_DE,
14
+ output reg LCD_HSYNC,
15
+ output reg LCD_VSYNC,
16
+ output reg LCD_GENLOCK,
17
+ output reg [5:0] LCD_DB,
18
+ output reg LCD_ENABLE_UVC,
19
+ output reg [17:0] LCD_DB_UVC
20
+ );
21
+
22
+ parameter H_Lw = 16'd30;
23
+ parameter H_Pixel_Valid = 16'd720;
24
+ parameter H_FrontPorch = 16'd129;
25
+ parameter H_BackPorch = 16'd32;
26
+
27
+ parameter PixelForHS = H_Lw + H_Pixel_Valid + H_FrontPorch + H_BackPorch;
28
+
29
+ parameter V_Lw = 16'd2;
30
+ parameter V_Pixel_Valid = 16'd144;
31
+ parameter V_FrontPorch = 16'd2; // was 64
32
+ parameter V_BackPorch = 16'd10;
33
+
34
+ parameter PixelForVS = V_Pixel_Valid + V_FrontPorch + V_BackPorch;
35
+
36
+ reg gLcdOn_r1;
37
+ reg gLcdOn_r2;
38
+ always@(posedge gClk)
39
+ begin
40
+ gLcdOn_r1 <= lcd_on;
41
+ gLcdOn_r2 <= gLcdOn_r1;
42
+ end
43
+
44
+ reg gVs_r1;
45
+ reg gVs_r2;
46
+ always@(posedge gClk)
47
+ begin
48
+ gVs_r1 <= hVsync;
49
+ gVs_r2 <= gVs_r1;
50
+ end
51
+
52
+ reg hgVs_r1;
53
+ reg hgVs_r2;
54
+ always@(posedge hClk)
55
+ begin
56
+ hgVs_r1 <= hVsync;
57
+ hgVs_r2 <= hgVs_r1;
58
+ end
59
+ wire hGbVsync = hgVs_r1 & ~hgVs_r2;
60
+
61
+ reg [15:0] hs_sr;
62
+ always@(posedge hClk)
63
+ hs_sr <= {hs_sr[14:0], hHsync};
64
+ wire gbhsync = hs_sr[15] & ~hs_sr[14];
65
+ reg valid_r1;
66
+ always@(posedge hClk)
67
+ valid_r1 <= hValid;
68
+
69
+
70
+ wire [17:0] color_pixeluvc;
71
+ wire [17:0] color_pixelp;
72
+
73
+ localparam DEPTH = 1024;
74
+ reg [35:0] lineBuffer [DEPTH-1:0];
75
+ reg [35:0] lineBuffer_q;
76
+
77
+ reg [9:0] lineBuffer_wa;
78
+ reg [7:0] lineBuffer_wrCount;
79
+ reg [9:0] lineBuffer_ra;
80
+ reg [7:0] lineBuffer_rdCount;
81
+
82
+ always@(posedge hClk)
83
+ begin
84
+ if(hGbVsync)
85
+ begin
86
+ lineBuffer_wrCount <= 'd0;
87
+ lineBuffer_wa <= 'd0;
88
+ end
89
+ else
90
+ if(gbhsync)
91
+ lineBuffer_wrCount <= 'd0;
92
+ else
93
+ if(hValid)
94
+ if(lineBuffer_wrCount <= 8'd159)
95
+ begin
96
+ lineBuffer_wrCount <= lineBuffer_wrCount + 1'd1;
97
+ if(lineBuffer_wa < DEPTH - 1'd1)
98
+ lineBuffer_wa <= lineBuffer_wa + 1'd1;
99
+ else
100
+ lineBuffer_wa <= 'd0;
101
+ end
102
+ end
103
+
104
+ reg [11:0] H_PixelCount;
105
+ reg [11:0] V_PixelCount;
106
+ reg [15:0] frameCount;
107
+ wire LCD_DEI = ( H_PixelCount > H_BackPorch + H_Lw ) && ( H_PixelCount <= H_Pixel_Valid + H_BackPorch + H_Lw ) && (V_PixelCount < V_Pixel_Valid + V_Lw + V_FrontPorch) && (V_PixelCount >= V_Lw + V_FrontPorch);
108
+
109
+ always@(posedge hClk)
110
+ if(hValid&&(lineBuffer_wrCount <= 8'd159))
111
+ lineBuffer[lineBuffer_wa] <= {hColorPixelUVC, hColorPixel};
112
+
113
+ reg [1:0] phase;
114
+ reg [7:0] hoffset;
115
+ localparam OFFSET = 41;
116
+ reg pGbVsync;
117
+ reg pGbVsync_r1;
118
+ wire pGbVsyncRising = pGbVsync & ~pGbVsync_r1;
119
+ always@(posedge gClk)
120
+ begin
121
+ pGbVsync <= hVsync;
122
+ pGbVsync_r1 <= pGbVsync;
123
+ end
124
+
125
+ always@(posedge gClk)
126
+ begin
127
+ if(pGbVsyncRising)
128
+ begin
129
+ lineBuffer_ra <= 'd0;
130
+ lineBuffer_rdCount <= 'd0;
131
+ phase <= 'd2;
132
+ end
133
+ else
134
+ if(~LCD_HSYNC)
135
+ begin
136
+ phase <= 'd2;
137
+ hoffset <= 'd0;
138
+ lineBuffer_rdCount <= 'd0;
139
+ end
140
+ else
141
+ begin
142
+ if(phase < 3'd2)
143
+ phase <= phase + 1'd1;
144
+ else
145
+ phase <= 'd0;
146
+
147
+ if((LCD_DEI) && LCD_VSYNC && (phase == 'd2))
148
+ if(hoffset < OFFSET)
149
+ hoffset <= hoffset + 1'd1;
150
+
151
+ if((LCD_DEI) && (V_PixelCount >= V_Lw + V_FrontPorch) && (phase == 'd1))
152
+ begin
153
+ if(hoffset >= OFFSET)
154
+ if(lineBuffer_rdCount <= 8'd159)
155
+ begin
156
+ if(lineBuffer_ra < DEPTH - 1'd1)
157
+ lineBuffer_ra <= lineBuffer_ra + 1'd1;
158
+ else
159
+ lineBuffer_ra <= 'd0;
160
+ lineBuffer_rdCount <= lineBuffer_rdCount + 1'd1;
161
+ end
162
+ end
163
+ end
164
+ end
165
+
166
+ always@(posedge gClk)
167
+ lineBuffer_q <= lineBuffer[lineBuffer_ra];
168
+
169
+ assign color_pixeluvc = lineBuffer_q[35:18];
170
+ assign color_pixelp = lineBuffer_q[17:0];
171
+
172
+ localparam FINE_OFFSET = 11'd418;
173
+ reg [10:0] fineDelay;
174
+ // LCD scanout is several rows behind the emulator
175
+ // Need to delay the falling edge of lcd_on
176
+ //
177
+ // When we get falling edge of lcd_on, scanout remaining rows
178
+ // then enter
179
+ reg lcd_on_aligned;
180
+ reg lcd_on_aligned_r1;
181
+ reg lcd_on_aligned_r2;
182
+ wire frameDone = (V_PixelCount >= V_Pixel_Valid + V_Lw + V_FrontPorch)&&~LCD_HSYNC;
183
+ always@(posedge gClk)
184
+ if((gVs_r1 & ~gVs_r2)|(lcd_on_aligned_r1 & ~lcd_on_aligned_r2))
185
+ fineDelay <= 'd0;
186
+ else
187
+ if(fineDelay != FINE_OFFSET)
188
+ fineDelay <= fineDelay + 1'd1;
189
+
190
+ reg delayed;
191
+ always@(posedge gClk)
192
+ delayed <= (fineDelay == (FINE_OFFSET - 1'd1)) ? 1'd1 : 1'd0;
193
+
194
+ always@(posedge gClk)
195
+ begin
196
+ if((V_PixelCount == 0) || frameDone)
197
+ lcd_on_aligned <= lcd_on;
198
+ lcd_on_aligned_r1 <= lcd_on_aligned;
199
+ lcd_on_aligned_r2 <= lcd_on_aligned_r1;
200
+ end
201
+
202
+ always @(posedge gClk)begin
203
+ if( !nRST || delayed || ~lcd_on_aligned) begin
204
+ V_PixelCount <= 0;
205
+ H_PixelCount <= 'd0;
206
+ frameCount <= 16'd0;
207
+ end
208
+ else
209
+ if( H_PixelCount == PixelForHS )
210
+ begin
211
+ V_PixelCount <= V_PixelCount + 1'b1;
212
+ H_PixelCount <= 'd0;
213
+ end
214
+ else if( V_PixelCount >= (PixelForVS + V_Lw) ) begin
215
+ V_PixelCount <= 'd0;
216
+ H_PixelCount <= 'd0;
217
+ frameCount <= frameCount + 1'd1;
218
+ end
219
+ else begin
220
+ H_PixelCount <= H_PixelCount + 1'b1;
221
+ end
222
+ end
223
+
224
+ reg LCD_DEI_r1;
225
+ reg LCD_DEI_r2;
226
+ reg LCD_VSYNC_r1;
227
+ always@(posedge gClk)
228
+ begin
229
+ LCD_DEI_r1 <= LCD_DEI;
230
+ LCD_DEI_r2 <= LCD_DEI_r1;
231
+ LCD_DE <= LCD_DEI_r2;
232
+ LCD_HSYNC <= H_PixelCount < H_Lw ? 1'b0 : 1'b1;
233
+ LCD_VSYNC <= (V_PixelCount >= 0)&&(V_PixelCount < V_Lw) ? 1'b0 : 1'b1;
234
+ LCD_VSYNC_r1 <= LCD_VSYNC;
235
+ if(LCD_VSYNC & ~LCD_VSYNC_r1)
236
+ LCD_GENLOCK <= ~LCD_GENLOCK;
237
+
238
+ if((hoffset >= OFFSET) && lcd_on_aligned)
239
+ begin
240
+ if(LCD_EN)
241
+ begin
242
+ if(phase == 2)
243
+ LCD_DB <= color_pixelp[17:12]; // Blue
244
+ if(phase == 1)
245
+ LCD_DB <= color_pixelp[11:6]; // Green
246
+ if(phase == 0)
247
+ LCD_DB <= color_pixelp[5:0]; // Red
248
+
249
+ LCD_DB_UVC <= color_pixeluvc;
250
+ LCD_ENABLE_UVC <= LCD_DEI_r2;
251
+ end
252
+ else
253
+ begin
254
+ LCD_DB <= {6{1'b1}};
255
+ LCD_DB_UVC <= {18{1'b1}};
256
+ LCD_ENABLE_UVC <= LCD_DEI_r2;
257
+ end
258
+ end
259
+ else
260
+ begin
261
+ LCD_DB <= 'd0;
262
+ LCD_DB_UVC <= 'd0;
263
+ LCD_ENABLE_UVC <= 1'd0;
264
+ end
265
+ end
266
+
267
+ endmodule
ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/adc_wrap.v ADDED
@@ -0,0 +1,85 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ // adc_wrap.v
2
+
3
+ module adc_wrap(
4
+ input clk,
5
+ input reset_n,
6
+ input hAdcReq_ext,
7
+ output reg [13:0] hAdcValue_r1,
8
+ output reg hAdcReady_r1,
9
+ input VBAT_ADC_P,
10
+ input VBAT_ADC_N
11
+ );
12
+
13
+ wire hAdcReady;
14
+ wire [13:0] hAdcValue;
15
+ reg [1:0] hAdcState;
16
+
17
+ always@(posedge clk)
18
+ begin
19
+ if((hAdcState == 2'd2)&&hAdcReady)
20
+ begin
21
+ hAdcReady_r1 <= 1'd1;
22
+ hAdcValue_r1 <= hAdcValue;
23
+ end
24
+ else
25
+ hAdcReady_r1 <= 1'd0;
26
+ end
27
+
28
+ wire [7:0] mdrp_rdata_o;
29
+
30
+ TLVDS_IBUF_ADC u_IBUF_ADC(
31
+ .I(VBAT_ADC_P),
32
+ .IB(VBAT_ADC_N),
33
+ .ADCEN(1'd1)
34
+ );
35
+
36
+
37
+ wire adcen_i = reset_n;
38
+ wire hAdcReq = (hAdcState == 2'd1);
39
+
40
+ always@(posedge clk)
41
+ if(~reset_n)
42
+ hAdcState <= 'd0;
43
+ else
44
+ case(hAdcState)
45
+ 2'd0 :
46
+ if(hAdcReq_ext)
47
+ hAdcState <= 2'd1;
48
+ 2'd1 :
49
+ if(~hAdcReady)
50
+ hAdcState <= 2'd2;
51
+ 2'd2 :
52
+ begin
53
+ if(hAdcReady)
54
+ hAdcState <= 2'd3;
55
+ else
56
+ if(hAdcReq_ext)
57
+ hAdcState <= 2'd1;
58
+ end
59
+ 2'd3 :
60
+ hAdcState <= 2'd0;
61
+ endcase
62
+
63
+ reg adcen;
64
+ always@(posedge clk or negedge reset_n)
65
+ if(~reset_n)
66
+ adcen <= 1'd0;
67
+ else
68
+ adcen <= 1'd1;
69
+ Gowin_ADC u_Gowin_ADC (
70
+ .clk(clk), //input clk
71
+ .drstn(adcen_i ), //input drstn
72
+ .adcrdy(hAdcReady), //output adcrdy
73
+ .adcvalue(hAdcValue), //output [13:0] adcvalue
74
+ .vsenctl(3'b010), //input [2:0] vsenctl
75
+ .adcen(adcen), //input adcen
76
+ .adcreqi(hAdcReq), //input adcreqi
77
+ .adcmode(1'd1), //input adcmode 1 = Voltage, 0 = temperature
78
+ .mdrp_clk(1'd0), //input mdrp_clk
79
+ .mdrp_rdata(mdrp_rdata_o), //output [7:0] mdrp_rdata
80
+ .mdrp_wdata(8'd0), //input [7:0] mdrp_wdata
81
+ .mdrp_a_inc(1'd0), //input mdrp_a_inc
82
+ .mdrp_opcode(2'd0) //input [1:0] mdrp_opcode
83
+ );
84
+
85
+ endmodule
ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/aud_system_top.v ADDED
@@ -0,0 +1,154 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ // aud_system_top.v
2
+
3
+ module aud_system_top(
4
+ input gClk,
5
+ input hClk,
6
+ input reset_n,
7
+ input [15:0] left,
8
+ input [15:0] right,
9
+ input software_mute,
10
+
11
+ output [7:0] volume,
12
+ output hHeadphones,
13
+ output [7:0] pmic_sys_status,
14
+
15
+ output AUD_BCLK,
16
+ output AUD_DIN,
17
+ input AUD_DOUT,
18
+ output AUD_MCLK,
19
+ output AUD_RESET,
20
+ output reg AUD_WCLK,
21
+
22
+ inout SCL,
23
+ inout SDA
24
+ );
25
+
26
+ reg [31:0] stereo_sr;
27
+ reg [4:0] count;
28
+
29
+ reg gClkHalf;
30
+ always@(posedge gClk)
31
+ gClkHalf <= ~gClkHalf;
32
+
33
+ wire [7:0] hpgpio;
34
+ assign hHeadphones = hpgpio[1];
35
+
36
+ wire mute = (software_mute | volume > 8'h76);
37
+
38
+ wire [15:0] left_m = mute ? 16'd0 : -left;
39
+ wire [15:0] right_m = mute ? 16'd0 : -right;
40
+
41
+ reg [16:0] gMonoSpeaker;
42
+ always @(posedge gClk)
43
+ if(reset_n)
44
+ gMonoSpeaker <= left_m + right_m;
45
+
46
+ always @(posedge gClkHalf or negedge reset_n) begin
47
+ if (~reset_n) begin
48
+ count <= 5'd0;
49
+ end
50
+ else
51
+ begin
52
+ if (count == 5'd0) begin
53
+ count <= 5'd31;
54
+ AUD_WCLK <= 1'b1;
55
+ stereo_sr <= ~hHeadphones ? {16'd0,gMonoSpeaker[16:1]} :
56
+ { right_m[15:0],left_m[15:0] };
57
+ end
58
+ else begin
59
+ count <= count - 1'd1;
60
+ if(count == 5'd16)
61
+ AUD_WCLK <= 1'b0;
62
+ stereo_sr <= {stereo_sr[30:0], 1'b0};
63
+ end
64
+ end
65
+ end
66
+
67
+ assign AUD_MCLK = gClk;
68
+ assign AUD_BCLK = ~gClkHalf;
69
+ assign AUD_DIN = stereo_sr[31];
70
+ assign AUD_RESET = reset_n;
71
+
72
+ parameter I2C_DATA_WIDTH = 8;
73
+ parameter REGISTER_WIDTH = 8;
74
+ parameter ADDRESS_WIDTH = 7;
75
+
76
+ wire [I2C_DATA_WIDTH-1:0] i2c_miso_data; // output
77
+ wire i2c_busy; // output
78
+
79
+ wire tlv320_init_done;
80
+ wire tlv320_i2c_enable;
81
+ wire tlv320_i2c_read_write;
82
+ wire [I2C_DATA_WIDTH-1:0] tlv320_i2c_mosi_data;
83
+ wire [REGISTER_WIDTH-1:0] tlv320_i2c_register_address;
84
+ wire [ADDRESS_WIDTH-1:0] tlv320_i2c_device_address;
85
+
86
+ wire pol_i2c_enable;
87
+ wire pol_i2c_read_write;
88
+ wire [I2C_DATA_WIDTH-1:0] pol_i2c_mosi_data;
89
+ wire [REGISTER_WIDTH-1:0] pol_i2c_register_address;
90
+ wire [ADDRESS_WIDTH-1:0] pol_i2c_device_address;
91
+
92
+ wire i2c_enable = tlv320_init_done ? pol_i2c_enable : tlv320_i2c_enable;
93
+ wire i2c_read_write = tlv320_init_done ? pol_i2c_read_write : tlv320_i2c_read_write;
94
+ wire [I2C_DATA_WIDTH-1:0] i2c_mosi_data = tlv320_init_done ? pol_i2c_mosi_data : tlv320_i2c_mosi_data;
95
+ wire [REGISTER_WIDTH-1:0] i2c_register_address = tlv320_init_done ? pol_i2c_register_address : tlv320_i2c_register_address;
96
+ wire [ADDRESS_WIDTH-1:0] i2c_device_address = tlv320_init_done ? pol_i2c_device_address : tlv320_i2c_device_address;
97
+
98
+ // Initializes the Audio codec
99
+ tlv320_init u_tlv320_init(
100
+ .pclk(hClk),
101
+ .vb_rst(~reset_n),
102
+ .i2c_busy(i2c_busy),
103
+ .tlv320_init_done(tlv320_init_done),
104
+
105
+ .i2c_enable(tlv320_i2c_enable),
106
+ .i2c_read_write(tlv320_i2c_read_write),
107
+ .i2c_mosi_data(tlv320_i2c_mosi_data),
108
+ .i2c_register_address(tlv320_i2c_register_address),
109
+ .i2c_device_address(tlv320_i2c_device_address)
110
+ );
111
+
112
+ polling_master u_pol_master(
113
+ .clk(hClk),
114
+ .rst(~reset_n),
115
+ .i2c_busy(i2c_busy),
116
+ .enable(tlv320_init_done),
117
+ .mute(software_mute),
118
+
119
+ .volume(volume),
120
+ .gpio(hpgpio),
121
+ .pmic_sys_status(pmic_sys_status),
122
+
123
+ .i2c_enable(pol_i2c_enable),
124
+ .i2c_miso_data(i2c_miso_data),
125
+ .i2c_read_write(pol_i2c_read_write),
126
+ .i2c_mosi_data(pol_i2c_mosi_data),
127
+ .i2c_register_address(pol_i2c_register_address),
128
+ .i2c_device_address(pol_i2c_device_address)
129
+ );
130
+
131
+ i2c_master #(
132
+ .DATA_WIDTH(I2C_DATA_WIDTH),
133
+ .REGISTER_WIDTH(REGISTER_WIDTH),
134
+ .ADDRESS_WIDTH(ADDRESS_WIDTH)
135
+ )
136
+ i2c_master_inst(
137
+ .clock (hClk),
138
+ .reset_n (reset_n),
139
+ .enable (i2c_enable),
140
+ .read_write (i2c_read_write),
141
+ .mosi_data (i2c_mosi_data),
142
+ .register_address (i2c_register_address),
143
+ .device_address (i2c_device_address),
144
+ .divider (16'd20),
145
+
146
+ .miso_data (i2c_miso_data),
147
+ .busy (i2c_busy),
148
+
149
+ .external_serial_data (SDA),
150
+ .external_serial_clock (SCL)
151
+ );
152
+
153
+
154
+ endmodule
ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/button_debounce.v ADDED
@@ -0,0 +1,42 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ module button_debouncer
2
+ (
3
+ input clk,
4
+ input unfiltered,
5
+ output reg filtered
6
+ );
7
+
8
+ parameter HIGHBIT = 14;
9
+
10
+ reg [HIGHBIT:0] count;
11
+ reg button_state;
12
+
13
+ reg [2:0] input_sampling;
14
+
15
+ always @(posedge clk) begin
16
+ input_sampling <= {input_sampling[1:0], unfiltered};
17
+
18
+ if (~filtered) begin
19
+ if (~input_sampling[2]) begin
20
+ count <= 'd0;
21
+ end else if (~count[HIGHBIT]) begin
22
+ count <= count + 1;
23
+ end
24
+ if (count[HIGHBIT]) begin
25
+ filtered <= 1'b1;
26
+ count <= 'd0;
27
+ end
28
+ end else begin
29
+ if (input_sampling[2]) begin
30
+ count <= 'd0;
31
+ end else if (~count[HIGHBIT]) begin
32
+ count <= count + 1;
33
+ end
34
+ if (count[HIGHBIT]) begin
35
+ filtered <= 1'b0;
36
+ count <= 'd0;
37
+ end
38
+ end
39
+
40
+ end
41
+
42
+ endmodule
ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/gb_burst_write.v ADDED
@@ -0,0 +1,70 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ // gb_burst_write.v
2
+
3
+ // Converts GB video data into a burst write to PSRAM
4
+ module gb_burst_write(
5
+ input hClk,
6
+ input hVsync,
7
+ input hNewLine,
8
+ input [22:0] hAddress,
9
+ input hWrite,
10
+ input [15:0] hData,
11
+
12
+ input xClk,
13
+ input xRdEn,
14
+ input xRamReady,
15
+ output reg xMcuReqWrite,
16
+
17
+ output [15:0] xDout,
18
+ output reg [22:0] xAddress
19
+ );
20
+
21
+ reg hLineToggle = 0;
22
+ reg hRamReady = 0;
23
+
24
+ always@(posedge hClk)
25
+ begin
26
+ if (hNewLine) begin
27
+ hRamReady <= xRamReady;
28
+ hLineToggle <= ~hLineToggle;
29
+ end
30
+ end
31
+
32
+ reg hVsync_r1;
33
+ always@(posedge hClk)
34
+ hVsync_r1 <= hVsync;
35
+
36
+ wire fifo_rst = ~hVsync_r1 & hVsync;
37
+
38
+ wire fifo_empty;
39
+ wire fifo_full;
40
+ wire fifo_almost_full;
41
+ fifo1k u_fifo1k(
42
+ .Data(hData), //input [15:0] Data
43
+ .WrReset(fifo_rst), //input WrReset
44
+ .RdReset(fifo_rst), //input RdReset
45
+ .WrClk(hClk), //input WrClk
46
+ .RdClk(xClk), //input RdClk
47
+ .WrEn(hWrite & hRamReady), //input WrEn
48
+ .RdEn(xRdEn | xMcuReqWrite), //input RdEn
49
+ .Q(xDout), //output [15:0] Q
50
+ .Almost_Full(fifo_almost_full), //output Almost_Full
51
+ .Empty(fifo_empty), //output Empty
52
+ // Full is on the write clock domain
53
+ // Won't update when QSPI CS is high
54
+ .Full(fifo_full) //output Full
55
+ );
56
+
57
+ reg [3:0] xLine_sr;
58
+ always@(posedge xClk)
59
+ xLine_sr <= {xLine_sr[2:0], hLineToggle};
60
+
61
+ always@(posedge xClk)
62
+ begin
63
+ xMcuReqWrite <= 1'd0;
64
+ if(xLine_sr[3] != xLine_sr[2]) begin
65
+ xMcuReqWrite <= xRamReady && (~fifo_empty);
66
+ xAddress <= hAddress[22:0];
67
+ end
68
+ end
69
+
70
+ endmodule
ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/i2c_master.sv ADDED
@@ -0,0 +1,634 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ `timescale 1ns / 1ps
2
+ //////////////////////////////////////////////////////////////////////////////////
3
+ // Company: www.circuitden.com
4
+ // Engineer: Artin Isagholian
5
+ // artinisagholian@gmail.com
6
+ //
7
+ // Create Date: 01/20/2021 05:47:22 PM
8
+ // Design Name:
9
+ // Module Name: i2c_master
10
+ // Project Name:
11
+ // Target Devices:
12
+ // Tool Versions:
13
+ // Description:
14
+ //
15
+ // Dependencies:
16
+ //
17
+ // Revision:
18
+ // Revision 0.01 - File Created
19
+ // Additional Comments:
20
+ //
21
+ //////////////////////////////////////////////////////////////////////////////////
22
+ module i2c_master#(
23
+ parameter DATA_WIDTH = 16,
24
+ parameter REGISTER_WIDTH = 16,
25
+ parameter ADDRESS_WIDTH = 7
26
+ )(
27
+ input wire clock,
28
+ input wire reset_n,
29
+ input wire enable,
30
+ input wire read_write,
31
+ input wire [DATA_WIDTH-1:0] mosi_data,
32
+ input wire [REGISTER_WIDTH-1:0] register_address,
33
+ input wire [ADDRESS_WIDTH-1:0] device_address,
34
+ input wire [15:0] divider,
35
+ output reg [DATA_WIDTH-1:0] miso_data,
36
+ output reg busy,
37
+ inout external_serial_data,
38
+ inout external_serial_clock
39
+ );
40
+
41
+ localparam S_IDLE = 15'b100000000000000;
42
+ localparam S_START = 15'b010000000000000;
43
+ localparam S_WRITE_ADDR_W = 15'b001000000000000;
44
+ localparam S_CHECK_ACK = 15'b000100000000000;
45
+ localparam S_WRITE_REG_ADDR = 15'b000010000000000;
46
+ localparam S_RESTART = 15'b000001000000000;
47
+ localparam S_WRITE_ADDR_R = 15'b000000100000000;
48
+ localparam S_READ_REG = 15'b000000010000000;
49
+ localparam S_SEND_NACK = 15'b000000001000000;
50
+ localparam S_SEND_STOP = 15'b000000000100000;
51
+ localparam S_WRITE_REG_DATA = 15'b000000000010000;
52
+ localparam S_WRITE_REG_ADDR_MSB = 15'b000000000001000;
53
+ localparam S_WRITE_REG_DATA_MSB = 15'b000000000000100;
54
+ localparam S_READ_REG_MSB = 15'b000000000000010;
55
+ localparam S_SEND_ACK = 15'b000000000000001;
56
+
57
+ reg [14:0] state;
58
+ reg [14:0] _state;
59
+ reg [14:0] post_state;
60
+ reg [14:0] _post_state;
61
+
62
+ reg serial_clock;
63
+ logic _serial_clock;
64
+ reg [ADDRESS_WIDTH:0] saved_device_address;
65
+ logic [ADDRESS_WIDTH:0] _saved_device_address;
66
+ reg [REGISTER_WIDTH-1:0] saved_register_address;
67
+ logic [REGISTER_WIDTH-1:0] _saved_register_address;
68
+ reg [DATA_WIDTH-1:0] saved_mosi_data;
69
+ logic [DATA_WIDTH-1:0] _saved_mosi_data;
70
+ reg [1:0] process_counter;
71
+ logic [1:0] _process_counter;
72
+ reg [7:0] bit_counter;
73
+ logic [7:0] _bit_counter;
74
+ reg serial_data;
75
+ logic _serial_data;
76
+ reg post_serial_data;
77
+ logic _post_serial_data;
78
+ reg last_acknowledge;
79
+ logic _last_acknowledge;
80
+ logic _saved_read_write;
81
+ reg saved_read_write;
82
+ reg [15:0] divider_counter;
83
+ logic [15:0] _divider_counter;
84
+ reg divider_tick;
85
+ logic [DATA_WIDTH-1:0] _miso_data;
86
+ logic _busy;
87
+ logic serial_data_output_enable;
88
+ logic serial_clock_output_enable;
89
+
90
+
91
+ assign external_serial_clock = (serial_clock_output_enable) ? serial_clock : 1'bz;
92
+ assign external_serial_data = (serial_data_output_enable) ? serial_data : 1'bz;
93
+
94
+ always_comb begin
95
+ _state = state;
96
+ _post_state = post_state;
97
+ _process_counter = process_counter;
98
+ _bit_counter = bit_counter;
99
+ _last_acknowledge = last_acknowledge;
100
+ _miso_data = miso_data;
101
+ _saved_read_write = saved_read_write;
102
+ _busy = busy;
103
+ _divider_counter = divider_counter;
104
+ _saved_register_address = saved_register_address;
105
+ _saved_device_address = saved_device_address;
106
+ _saved_mosi_data = saved_mosi_data;
107
+ _serial_data = serial_data;
108
+ _serial_clock = serial_clock;
109
+ _post_serial_data = post_serial_data;
110
+
111
+ if (divider_counter == divider) begin
112
+ _divider_counter = 0;
113
+ divider_tick = 1;
114
+ end
115
+ else begin
116
+ _divider_counter = divider_counter + 1;
117
+ divider_tick = 0;
118
+ end
119
+
120
+ if ((state!=S_IDLE) && (state!=S_CHECK_ACK) && (state!=S_READ_REG) && (state!=S_READ_REG_MSB)) begin
121
+ serial_data_output_enable = 1;
122
+ end
123
+ else begin
124
+ serial_data_output_enable = 0;
125
+ end
126
+
127
+ if (state!=S_IDLE && process_counter!=1 && process_counter!=2) begin
128
+ serial_clock_output_enable = 1;
129
+ end
130
+ else begin
131
+ serial_clock_output_enable = 0;
132
+ end
133
+
134
+ case (state)
135
+ S_IDLE: begin
136
+ _process_counter = 0;
137
+ _bit_counter = 0;
138
+ _last_acknowledge = 0;
139
+ _busy = 0;
140
+ _saved_read_write = read_write;
141
+ _saved_register_address = register_address;
142
+ _saved_device_address = {device_address,1'b0};
143
+ _saved_mosi_data = mosi_data;
144
+ _serial_data = 1;
145
+ _serial_clock = 1;
146
+
147
+ if (enable) begin
148
+ _state = S_START;
149
+ _post_state = S_WRITE_ADDR_W;
150
+ _busy = 1;
151
+ end
152
+ end
153
+ S_START: begin
154
+ if (divider_tick) begin
155
+ case (process_counter)
156
+ 0: begin
157
+ _process_counter = 1;
158
+ end
159
+ 1: begin
160
+ _serial_data = 0;
161
+ _process_counter = 2;
162
+ end
163
+ 2: begin
164
+ _bit_counter = 8;
165
+ _process_counter = 3;
166
+ end
167
+ 3: begin
168
+ _serial_clock = 0;
169
+ _process_counter = 0;
170
+ _state = post_state;
171
+ _serial_data = saved_device_address[ADDRESS_WIDTH];
172
+ end
173
+ endcase
174
+ end
175
+ end
176
+ S_WRITE_ADDR_W: begin
177
+ if (divider_tick) begin
178
+ case (process_counter)
179
+ 0: begin
180
+ _serial_clock = 1;
181
+ _process_counter = 1;
182
+ end
183
+ 1: begin
184
+ if (external_serial_clock == 1) begin
185
+ _process_counter = 2;
186
+ end
187
+ end
188
+ 2: begin
189
+ _serial_clock = 0;
190
+ _bit_counter = bit_counter - 1;
191
+ _process_counter = 3;
192
+ end
193
+ 3: begin
194
+ if (bit_counter == 0) begin
195
+ _post_serial_data = saved_register_address[REGISTER_WIDTH-1];
196
+
197
+ if (REGISTER_WIDTH == 16) begin
198
+ _post_state = S_WRITE_REG_ADDR_MSB;
199
+ end
200
+ else begin
201
+ _post_state = S_WRITE_REG_ADDR;
202
+ end
203
+
204
+ _state = S_CHECK_ACK;
205
+ _bit_counter = 8;
206
+ end
207
+ else begin
208
+ _serial_data = saved_device_address[bit_counter-1];
209
+ end
210
+ _process_counter = 0;
211
+ end
212
+ endcase
213
+ end
214
+ end
215
+ S_CHECK_ACK: begin
216
+ if (divider_tick) begin
217
+ case (process_counter)
218
+ 0: begin
219
+ _serial_clock = 1;
220
+ _process_counter = 1;
221
+ end
222
+ 1: begin
223
+ if (external_serial_clock == 1) begin
224
+ _last_acknowledge = 0;
225
+ _process_counter = 2;
226
+ end
227
+ end
228
+ 2: begin
229
+ _serial_clock = 0;
230
+
231
+ if (external_serial_data == 0) begin
232
+ _last_acknowledge = 1;
233
+ end
234
+ _process_counter = 3;
235
+ end
236
+ 3: begin
237
+ if (last_acknowledge == 1) begin
238
+ _last_acknowledge = 0;
239
+ _serial_data = post_serial_data;
240
+ _state = post_state;
241
+ end
242
+ else begin
243
+ _state = S_IDLE;
244
+ end
245
+ _process_counter = 0;
246
+ end
247
+ endcase
248
+ end
249
+ end
250
+ S_WRITE_REG_ADDR_MSB: begin
251
+ if (divider_tick) begin
252
+ case (process_counter)
253
+ 0: begin
254
+ _serial_clock = 1;
255
+ _process_counter = 1;
256
+ end
257
+ 1: begin
258
+ if (external_serial_clock == 1) begin
259
+ _last_acknowledge = 0;
260
+ _process_counter = 2;
261
+ end
262
+ end
263
+ 2: begin
264
+ _serial_clock = 0;
265
+ _bit_counter = bit_counter - 1;
266
+ _process_counter = 3;
267
+ end
268
+ 3: begin
269
+ if (bit_counter == 0) begin
270
+ _post_state = S_WRITE_REG_ADDR;
271
+ _post_serial_data = saved_register_address[7];
272
+ _bit_counter = 8;
273
+ _serial_data = 0;
274
+ _state = S_CHECK_ACK;
275
+ end
276
+ else begin
277
+ _serial_data = saved_register_address[bit_counter+3'd7];
278
+ end
279
+ _process_counter = 0;
280
+ end
281
+ endcase
282
+ end
283
+ end
284
+ S_WRITE_REG_ADDR: begin
285
+ if (divider_tick) begin
286
+ case (process_counter)
287
+ 0: begin
288
+ _serial_clock = 1;
289
+ _process_counter = 1;
290
+ end
291
+ 1: begin
292
+ if (external_serial_clock == 1) begin
293
+ _last_acknowledge = 0;
294
+ _process_counter = 2;
295
+ end
296
+ end
297
+ 2: begin
298
+ _serial_clock = 0;
299
+ _bit_counter = bit_counter - 1;
300
+ _process_counter = 3;
301
+ end
302
+ 3: begin
303
+ if (bit_counter == 0) begin
304
+ if (read_write == 0) begin
305
+ if (DATA_WIDTH == 16) begin
306
+ _post_state = S_WRITE_REG_DATA_MSB;
307
+ _post_serial_data = saved_mosi_data[15];
308
+ end
309
+ else begin
310
+ _post_state = S_WRITE_REG_DATA;
311
+ _post_serial_data = saved_mosi_data[7];
312
+ end
313
+ end
314
+ else begin
315
+ _post_state = S_RESTART;
316
+ _post_serial_data = 1;
317
+ end
318
+ _bit_counter = 8;
319
+ _serial_data = 0;
320
+ _state = S_CHECK_ACK;
321
+ end
322
+ else begin
323
+ _serial_data = saved_register_address[bit_counter-1];
324
+ end
325
+ _process_counter = 0;
326
+ end
327
+ endcase
328
+ end
329
+ end
330
+ S_WRITE_REG_DATA_MSB: begin
331
+ if (divider_tick) begin
332
+ case (process_counter)
333
+ 0: begin
334
+ _serial_clock = 1;
335
+ _process_counter = 1;
336
+ end
337
+ 1: begin
338
+ if (external_serial_clock == 1) begin
339
+ _last_acknowledge = 1;
340
+ _process_counter = 2;
341
+ end
342
+ end
343
+ 2: begin
344
+ _serial_clock = 0;
345
+ _bit_counter = bit_counter - 1;
346
+ _process_counter = 3;
347
+ end
348
+ 3: begin
349
+ if (bit_counter == 0) begin
350
+ _state = S_CHECK_ACK;
351
+ _post_state = S_WRITE_REG_DATA;
352
+ _post_serial_data = saved_mosi_data[7];
353
+ _bit_counter = 8;
354
+ _serial_data = 0;
355
+ end
356
+ else begin
357
+ _serial_data = saved_mosi_data[bit_counter+3'd7];
358
+ end
359
+ _process_counter = 0;
360
+ end
361
+ endcase
362
+ end
363
+ end
364
+ S_WRITE_REG_DATA: begin
365
+ if (divider_tick) begin
366
+ case (process_counter)
367
+ 0: begin
368
+ _serial_clock = 1;
369
+ _process_counter = 1;
370
+ end
371
+ 1: begin
372
+ if (external_serial_clock == 1) begin
373
+ _last_acknowledge = 0;
374
+ _process_counter = 2;
375
+ end
376
+ end
377
+ 2: begin
378
+ _serial_clock = 0;
379
+ _bit_counter = bit_counter - 1;
380
+ _process_counter = 3;
381
+ end
382
+ 3: begin
383
+ if (bit_counter == 0) begin
384
+ _state = S_CHECK_ACK;
385
+ _post_state = S_SEND_STOP;
386
+ _post_serial_data = 0;
387
+ _bit_counter = 8;
388
+ _serial_data = 0;
389
+ end
390
+ else begin
391
+ _serial_data = saved_mosi_data[bit_counter-1];
392
+ end
393
+ _process_counter = 0;
394
+ end
395
+ endcase
396
+ end
397
+ end
398
+ S_RESTART: begin
399
+ if (divider_tick) begin
400
+ case (process_counter)
401
+ 0: begin
402
+ _process_counter = 1;
403
+ end
404
+ 1: begin
405
+ _process_counter = 2;
406
+ _serial_clock = 1;
407
+ end
408
+ 2: begin
409
+ _process_counter = 3;
410
+ end
411
+ 3: begin
412
+ _state = S_START;
413
+ _post_state = S_WRITE_ADDR_R;
414
+ _saved_device_address[0] = 1;
415
+ _process_counter = 0;
416
+ end
417
+ endcase
418
+ end
419
+ end
420
+ S_WRITE_ADDR_R: begin
421
+ if (divider_tick) begin
422
+ case (process_counter)
423
+ 0: begin
424
+ _serial_clock = 1;
425
+ _process_counter = 1;
426
+ end
427
+ 1: begin
428
+ if (external_serial_clock == 1) begin
429
+ _last_acknowledge = 0;
430
+ _process_counter = 2;
431
+ end
432
+ end
433
+ 2: begin
434
+ _serial_clock = 0;
435
+ _bit_counter = bit_counter - 1;
436
+ _process_counter = 3;
437
+ end
438
+ 3: begin
439
+ if (bit_counter == 0) begin
440
+ if (DATA_WIDTH == 16) begin
441
+ _post_state = S_READ_REG_MSB;
442
+ _post_serial_data = 0;
443
+ end
444
+ else begin
445
+ _post_state = S_READ_REG;
446
+ _post_serial_data = 0;
447
+ end
448
+ _state = S_CHECK_ACK;
449
+ _bit_counter = 8;
450
+ end
451
+ else begin
452
+ _serial_data = saved_device_address[bit_counter-1];
453
+ end
454
+ _process_counter = 0;
455
+ end
456
+ endcase
457
+ end
458
+ end
459
+ S_READ_REG_MSB: begin
460
+ if (divider_tick) begin
461
+ case (process_counter)
462
+ 0: begin
463
+ _serial_clock = 1;
464
+ _process_counter = 1;
465
+ end
466
+ 1: begin
467
+ if (external_serial_clock == 1) begin
468
+ _last_acknowledge = 0;
469
+ _process_counter = 2;
470
+ end
471
+ end
472
+ 2: begin
473
+ _serial_clock = 0;
474
+ //sample data on this rising edge of scl
475
+ _miso_data[bit_counter+7] = external_serial_data;
476
+ _bit_counter = bit_counter - 1;
477
+ _process_counter = 3;
478
+ end
479
+ 3: begin
480
+ if (bit_counter == 0) begin
481
+ _post_state = S_READ_REG;
482
+ _state = S_SEND_ACK;
483
+ _bit_counter = 8;
484
+ _serial_data = 0;
485
+ end
486
+ _process_counter = 0;
487
+ end
488
+ endcase
489
+ end
490
+ end
491
+ S_READ_REG: begin
492
+ if (divider_tick) begin
493
+ case (process_counter)
494
+ 0: begin
495
+ _serial_clock = 1;
496
+ _process_counter = 1;
497
+ end
498
+ 1: begin
499
+ if (external_serial_clock) begin
500
+ _last_acknowledge = 0;
501
+ _process_counter = 2;
502
+ end
503
+ end
504
+ 2: begin
505
+ _serial_clock = 0;
506
+ //sample data on this rising edge of scl
507
+ _miso_data[bit_counter-1] = external_serial_data;
508
+ _bit_counter = bit_counter - 1;
509
+ _process_counter = 3;
510
+ end
511
+ 3: begin
512
+ if (bit_counter == 0) begin
513
+ _state = S_SEND_NACK;
514
+ _serial_data = 0;
515
+ end
516
+ _process_counter = 0;
517
+ end
518
+ endcase
519
+ end
520
+ end
521
+ S_SEND_NACK: begin
522
+ if (divider_tick) begin
523
+ case (process_counter)
524
+ 0: begin
525
+ _serial_clock = 1;
526
+ _serial_data = 1;
527
+ _process_counter = 1;
528
+ end
529
+ 1: begin
530
+ if (external_serial_clock) begin
531
+ _last_acknowledge = 0;
532
+ _process_counter = 2;
533
+ end
534
+ end
535
+ 2: begin
536
+ _process_counter = 3;
537
+ _serial_clock = 0;
538
+ end
539
+ 3: begin
540
+ _state = S_SEND_STOP;
541
+ _process_counter = 0;
542
+ _serial_data = 0;
543
+ end
544
+ endcase
545
+ end
546
+ end
547
+ S_SEND_ACK: begin
548
+ if (divider_tick) begin
549
+ case (process_counter)
550
+ 0: begin
551
+ _serial_clock = 1;
552
+ _process_counter = 1;
553
+ _serial_data = 0;
554
+ end
555
+ 1: begin
556
+ if (external_serial_clock) begin
557
+ _process_counter = 2;
558
+ end
559
+ end
560
+ 2: begin
561
+ _process_counter = 3;
562
+ _serial_clock = 0;
563
+ end
564
+ 3: begin
565
+ _state = post_state;
566
+ _process_counter = 0;
567
+ end
568
+ endcase
569
+ end
570
+ end
571
+ S_SEND_STOP: begin
572
+ if (divider_tick) begin
573
+ case (process_counter)
574
+ 0: begin
575
+ _serial_clock = 1;
576
+ _process_counter = 1;
577
+ end
578
+ 1: begin
579
+ if (external_serial_clock == 1) begin
580
+ _process_counter = 2;
581
+ end
582
+ end
583
+ 2: begin
584
+ _process_counter = 3;
585
+ _serial_data = 1;
586
+ end
587
+ 3: begin
588
+ _state = S_IDLE;
589
+ end
590
+ endcase
591
+ end
592
+ end
593
+ endcase
594
+ end
595
+
596
+ always_ff @(posedge clock) begin
597
+ if (!reset_n) begin
598
+ state <= S_IDLE;
599
+ post_state <= S_IDLE;
600
+ process_counter <= 0;
601
+ bit_counter <= 0;
602
+ last_acknowledge <= 0;
603
+ miso_data <= 0;
604
+ saved_read_write <= 0;
605
+ divider_counter <= 0;
606
+ saved_device_address <= 0;
607
+ saved_register_address <= 0;
608
+ saved_mosi_data <= 0;
609
+ serial_clock <= 0;
610
+ serial_data <= 0;
611
+ saved_mosi_data <= 0;
612
+ post_serial_data <= 0;
613
+ busy <= 0;
614
+ end
615
+ else begin
616
+ state <= _state;
617
+ post_state <= _post_state;
618
+ process_counter <= _process_counter;
619
+ bit_counter <= _bit_counter;
620
+ last_acknowledge <= _last_acknowledge;
621
+ miso_data <= _miso_data;
622
+ saved_read_write <= _saved_read_write;
623
+ divider_counter <= _divider_counter;
624
+ saved_device_address <= _saved_device_address;
625
+ saved_register_address <= _saved_register_address;
626
+ saved_mosi_data <= _saved_mosi_data;
627
+ serial_clock <= _serial_clock;
628
+ serial_data <= _serial_data;
629
+ post_serial_data <= _post_serial_data;
630
+ busy <= _busy;
631
+ end
632
+ end
633
+
634
+ endmodule
ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/mem_system_top.sv ADDED
@@ -0,0 +1,236 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ // mem_system_top.v
2
+
3
+ module mem_system_top #(parameter ISSIMU=0)
4
+ (
5
+ input xClk,
6
+ input fClk,
7
+ input hClk,
8
+ input reset,
9
+
10
+ input QSPI_CLK,
11
+ input QSPI_MOSI,
12
+ input QSPI_MISO,
13
+ input QSPI_CS,
14
+ input QSPI_WP,
15
+ input QSPI_HD,
16
+
17
+ output PS_CE_N,
18
+ output PS_CLK,
19
+ inout [7:0] PS_DQ,
20
+ inout PS_DQS,
21
+
22
+ input hGBNewLine,
23
+ input [22:0] hGBAddress,
24
+ input hGBWrite,
25
+ input [15:0] hGBData,
26
+
27
+ input hValid,
28
+ input hHsync,
29
+ input hVsync,
30
+ output qMenuInit,
31
+ output [15:0] hWrBurstQ,
32
+ output [15:0] hWrBurstQ2,
33
+
34
+ output BIST_failed,
35
+ output BIST_finished
36
+ );
37
+
38
+ localparam RAMPORTCOUNT = 5;
39
+ localparam RAMPORT_BIST = 0;
40
+ localparam RAMPORT_QSPI = 1;
41
+ localparam RAMPORT_FBRD = 2;
42
+ localparam RAMPORT_FBWR = 3;
43
+ localparam RAMPORT_FBRDOSD = 4;
44
+
45
+ typedef logic tRAMIn_request [RAMPORTCOUNT];
46
+ typedef logic tRAMIn_RnW [RAMPORTCOUNT];
47
+ typedef logic [22:0] tRAMIn_addr [RAMPORTCOUNT];
48
+ typedef logic [15:0] tRAMIn_din [RAMPORTCOUNT];
49
+ typedef logic [10:0] tRAMIn_burst_length[RAMPORTCOUNT];
50
+
51
+ typedef logic tRAMOut_writeNext [RAMPORTCOUNT];
52
+ typedef logic tRAMOut_done [RAMPORTCOUNT];
53
+ typedef logic tRAMOut_dout_valid [RAMPORTCOUNT];
54
+
55
+ tRAMIn_request RAMIn_request;
56
+ tRAMIn_RnW RAMIn_RnW;
57
+ tRAMIn_addr RAMIn_addr;
58
+ tRAMIn_din RAMIn_din;
59
+ tRAMIn_burst_length RAMIn_burst_length;
60
+
61
+ tRAMOut_writeNext RAMOut_writeNext;
62
+ tRAMOut_done RAMOut_done;
63
+ tRAMOut_dout_valid RAMOut_dout_valid;
64
+
65
+ wire BIST_req_read;
66
+ wire BIST_req_write;
67
+ assign RAMIn_request[RAMPORT_BIST] = BIST_req_read | BIST_req_write;
68
+ assign RAMIn_RnW[RAMPORT_BIST] = BIST_req_read;
69
+
70
+ assign RAMIn_RnW[RAMPORT_QSPI] = 1'b0;
71
+ assign RAMIn_burst_length[RAMPORT_QSPI] = 11'd1024;
72
+
73
+ assign RAMIn_RnW[RAMPORT_FBRD] = 1'b1;
74
+ assign RAMIn_burst_length[RAMPORT_FBRD] = 11'd320;
75
+ assign RAMIn_din[RAMPORT_FBRD] = 16'd0;
76
+
77
+ assign RAMIn_RnW[RAMPORT_FBRDOSD] = 1'b1;
78
+ assign RAMIn_burst_length[RAMPORT_FBRDOSD] = 11'd320;
79
+ assign RAMIn_din[RAMPORT_FBRDOSD] = 16'd0;
80
+
81
+ assign RAMIn_RnW[RAMPORT_FBWR] = 1'b0;
82
+ assign RAMIn_burst_length[RAMPORT_FBWR] = 11'd320;
83
+
84
+ wire RAM_ready;
85
+ wire [15:0] RAM_dout;
86
+
87
+ MultiPortRamCtrl #(ISSIMU)
88
+ iMultiPortRamCtrl
89
+ (
90
+ .clk_sys (xClk),
91
+ .clk_fsys (fClk),
92
+ .rst (reset),
93
+
94
+ .RAMIn_request (RAMIn_request),
95
+ .RAMIn_RnW (RAMIn_RnW),
96
+ .RAMIn_addr (RAMIn_addr),
97
+ .RAMIn_din (RAMIn_din),
98
+ .RAMIn_burst_length (RAMIn_burst_length),
99
+
100
+ .RAMOut_writeNext (RAMOut_writeNext),
101
+ .RAMOut_done (RAMOut_done),
102
+ .RAMOut_dout_valid (RAMOut_dout_valid),
103
+
104
+ .ram_ready (RAM_ready),
105
+ .ram_dout (RAM_dout),
106
+
107
+ .psram_clk (PS_CLK),
108
+ .psram_cs_n (PS_CE_N),
109
+ .psram_rwds (PS_DQS),
110
+ .psram_dq (PS_DQ)
111
+ );
112
+
113
+ PSRAMBIST_Burst #(
114
+ .BIST_BURSTLENGTH(512),
115
+ .SHORTTEST(1)
116
+ )
117
+ iPSRAMBIST_Burst
118
+ (
119
+ .clk (xClk),
120
+ .rst (reset),
121
+
122
+ .test_finished (BIST_finished),
123
+ .test_failed (BIST_failed),
124
+
125
+ .ram_req_read (BIST_req_read),
126
+ .ram_req_write (BIST_req_write),
127
+ .ram_addr (RAMIn_addr[RAMPORT_BIST]),
128
+ .ram_din (RAMIn_din[RAMPORT_BIST]),
129
+ .burst_length (RAMIn_burst_length[RAMPORT_BIST]),
130
+ .ram_ready (RAM_ready),
131
+ .ram_writeNext (RAMOut_writeNext[RAMPORT_BIST]),
132
+ .ram_done (RAMOut_done[RAMPORT_BIST]),
133
+ .ram_dout (RAM_dout),
134
+ .ram_dout_valid (RAMOut_dout_valid[RAMPORT_BIST])
135
+ );
136
+
137
+ wire [15:0] qData;
138
+ wire [31:0] qAddress;
139
+ wire qDataValid;
140
+
141
+ QSPI_Slave u_QSPI_Slave(
142
+ .QSPI_CLK(QSPI_CLK),
143
+ .QSPI_CS(QSPI_CS),
144
+ .QSPI_MOSI(QSPI_MOSI),
145
+ .QSPI_MISO(QSPI_MISO),
146
+ .QSPI_WP(QSPI_WP),
147
+ .QSPI_HD(QSPI_HD),
148
+
149
+ .qMenuInit(qMenuInit),
150
+ .qDataValid(qDataValid),
151
+ .qData(qData),
152
+ .qAddress(qAddress)
153
+ );
154
+
155
+ mm_burst_write u_mm_burst_write(
156
+ .QSPI_CLK(QSPI_CLK),
157
+ .QSPI_CS(QSPI_CS),
158
+ .qAddress(qAddress),
159
+ .qDataValid(qDataValid),
160
+ .qData(qData),
161
+
162
+ .xClk(xClk),
163
+ // Standard FIFO uses xRegWrite here (not FWFT FIFO)
164
+ .xRdEn(RAMOut_writeNext[RAMPORT_QSPI]),
165
+ .xRamReady(BIST_finished),
166
+ .xMcuReqWrite(RAMIn_request[RAMPORT_QSPI]),
167
+ .xDout(RAMIn_din[RAMPORT_QSPI]),
168
+ .xAddress(RAMIn_addr[RAMPORT_QSPI])
169
+ );
170
+
171
+ mm_burst_read_to_stream #(
172
+ .base_pointer(23'h10000)
173
+ ) u_mm_burst_read_to_stream(
174
+ .hClk(hClk),
175
+ .hVsync(hVsync),
176
+ .hHsync(hHsync),
177
+ .hValid(hValid),
178
+ .xClk(xClk),
179
+
180
+ .xRamReady(BIST_finished),
181
+ .xStreamValid(RAMOut_dout_valid[RAMPORT_FBRD]),
182
+ .xStreamData(RAM_dout),
183
+ .xWrBurstDone(RAMOut_done[RAMPORT_FBRD]),
184
+ .xGbReqRead(RAMIn_request[RAMPORT_FBRD]),
185
+
186
+ .hWrBurstQ(hWrBurstQ),
187
+ .xGbAddress(RAMIn_addr[RAMPORT_FBRD])
188
+ );
189
+
190
+ reg hVsync_r1;
191
+ reg hHsync_r1;
192
+ reg hValid_r1;
193
+ always@(posedge hClk)
194
+ begin
195
+ hVsync_r1 <= hVsync;
196
+ hHsync_r1 <= hHsync;
197
+ hValid_r1 <= hValid;
198
+ end
199
+
200
+ mm_burst_read_to_stream #(
201
+ .base_pointer(23'h0)
202
+ ) u_mm_burst_read_to_stream_osd(
203
+ .hClk(hClk),
204
+ .hVsync(hVsync_r1),
205
+ .hHsync(hHsync_r1),
206
+ .hValid(hValid_r1),
207
+ .xClk(xClk),
208
+
209
+ .xRamReady(BIST_finished),
210
+ .xStreamValid(RAMOut_dout_valid[RAMPORT_FBRDOSD]),
211
+ .xStreamData(RAM_dout),
212
+ .xWrBurstDone(RAMOut_done[RAMPORT_FBRDOSD]),
213
+ .xGbReqRead(RAMIn_request[RAMPORT_FBRDOSD]),
214
+
215
+ .hWrBurstQ(hWrBurstQ2),
216
+ .xGbAddress(RAMIn_addr[RAMPORT_FBRDOSD])
217
+ );
218
+
219
+
220
+ gb_burst_write u_gb_burst_write(
221
+ .hClk(hClk),
222
+ .hVsync(hVsync),
223
+ .hNewLine(hGBNewLine),
224
+ .hAddress(hGBAddress),
225
+ .hWrite(hGBWrite),
226
+ .hData(hGBData),
227
+
228
+ .xClk(xClk),
229
+ .xRdEn(RAMOut_writeNext[RAMPORT_FBWR]),
230
+ .xRamReady(BIST_finished),
231
+ .xMcuReqWrite(RAMIn_request[RAMPORT_FBWR]),
232
+ .xDout(RAMIn_din[RAMPORT_FBWR]),
233
+ .xAddress(RAMIn_addr[RAMPORT_FBWR])
234
+ );
235
+
236
+ endmodule
ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/mm_burst_read_to_stream.v ADDED
@@ -0,0 +1,110 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ // mm_burst_read_to_stream.v
2
+ //
3
+ // Generates an output stream aligned with the input timings
4
+ // by performing memory mapped burst reads
5
+
6
+ module mm_burst_read_to_stream #(
7
+ parameter base_pointer = 23'h0
8
+ )
9
+ (
10
+ input hClk,
11
+ input hVsync,
12
+ input hHsync,
13
+ input hValid,
14
+ input xClk,
15
+
16
+ input xRamReady,
17
+ input xStreamValid,
18
+ input [15:0] xStreamData,
19
+ input xWrBurstDone,
20
+ output reg xGbReqRead,
21
+
22
+ output reg [15:0] hWrBurstQ,
23
+ output reg [22:0] xGbAddress
24
+
25
+ );
26
+
27
+ localparam LINE_DEPTH = 160;
28
+
29
+ reg [15:0] lineRam [LINE_DEPTH-1:0];//23039:0];
30
+ initial begin : init_RAM
31
+ integer i;
32
+ for (i = 0; i < LINE_DEPTH; i = i + 1) lineRam[i] = 16'b0;
33
+ end
34
+
35
+ reg [14:0] xLineRam_wa;
36
+ reg [14:0] hLineRam_ra;
37
+
38
+ reg hVsync_r1;
39
+ always@(posedge hClk)
40
+ hVsync_r1 <= hVsync;
41
+
42
+ reg hHsync_r1;
43
+ always@(posedge hClk)
44
+ hHsync_r1 <= hHsync;
45
+
46
+ wire hStartOfFrame = ~hVsync_r1 & hVsync;
47
+ always@(posedge hClk)
48
+ hHsync_r1 <= hHsync;
49
+ wire hStartOfLine = ~hHsync_r1 & hHsync;
50
+
51
+ always@(posedge hClk)
52
+ if(hStartOfFrame)
53
+ hLineRam_ra <= 'd0;
54
+ else
55
+ if(hValid)
56
+ begin
57
+ if (hLineRam_ra < LINE_DEPTH)
58
+ hLineRam_ra <= hLineRam_ra + 1'd1;
59
+ end
60
+ else
61
+ if(hStartOfLine)
62
+ hLineRam_ra <= 'd0;
63
+
64
+ always@(posedge hClk)
65
+ hWrBurstQ <= lineRam[hLineRam_ra];
66
+
67
+ always@(posedge xClk)
68
+ if(xStreamValid)
69
+ lineRam[xLineRam_wa] <= xStreamData;
70
+
71
+ always@(posedge xClk)
72
+ begin
73
+ if(xStreamValid)
74
+ xLineRam_wa <= xLineRam_wa + 1'd1;
75
+
76
+ if(xWrBurstDone)
77
+ xLineRam_wa <= 'd0;
78
+ end
79
+
80
+ // TODO - cleanup CDC
81
+
82
+ reg [3:0] xHsync_sr;
83
+ always@(posedge xClk)
84
+ xHsync_sr <= {xHsync_sr[2:0], hHsync};
85
+ wire xEndOfLine = xHsync_sr[3:2] == 2'b10;
86
+
87
+ reg [3:0] xVsync_sr;
88
+ always@(posedge xClk)
89
+ xVsync_sr <= {xVsync_sr[2:0], hVsync};
90
+ wire xStartOfFrame = xVsync_sr[3:2] == 2'b01;
91
+
92
+ always@(posedge xClk)
93
+ begin
94
+ xGbReqRead <= 1'd0;
95
+ if(xEndOfLine || xStartOfFrame)
96
+ xGbReqRead <= xRamReady;
97
+ end
98
+
99
+ always@(posedge xClk)
100
+ begin
101
+ if(xStartOfFrame)
102
+ begin
103
+ xGbAddress <= base_pointer;
104
+ end
105
+ else
106
+ if(xEndOfLine)
107
+ xGbAddress <= xGbAddress + 2*LINE_DEPTH;
108
+ end
109
+
110
+ endmodule
ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/mm_burst_write.v ADDED
@@ -0,0 +1,52 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ // mm_burst_write.v
2
+
3
+ // Converts QSPI memory mapped transfer into a burst write to PSRAM
4
+ module mm_burst_write(
5
+ input QSPI_CLK,
6
+ input QSPI_CS,
7
+ input [31:0] qAddress,
8
+ input qDataValid,
9
+ input [15:0] qData,
10
+
11
+ input xClk,
12
+ input xRdEn,
13
+ input xRamReady,
14
+ output reg xMcuReqWrite,
15
+
16
+ output [15:0] xDout,
17
+ output [22:0] xAddress
18
+ );
19
+
20
+ assign xAddress = qAddress[22:0];
21
+
22
+ wire fifo_empty;
23
+ wire fifo_full;
24
+ wire fifo_almost_full;
25
+ fifo1k u_fifo1k(
26
+ .Data(qData), //input [15:0] Data
27
+ .WrReset(1'd0), //input WrReset
28
+ .RdReset(1'd0), //input RdReset
29
+ .WrClk(~QSPI_CLK), //input WrClk
30
+ .RdClk(xClk), //input RdClk
31
+ .WrEn(qDataValid), //input WrEn
32
+ .RdEn(xRdEn | xMcuReqWrite), //input RdEn
33
+ .Q(xDout), //output [15:0] Q
34
+ .Almost_Full(fifo_almost_full), //output Almost_Full
35
+ .Empty(fifo_empty), //output Empty
36
+ // Full is on the write clock domain
37
+ // Won't update when QSPI CS is high
38
+ .Full(fifo_full) //output Full
39
+ );
40
+
41
+ reg [3:0] xCS_sr;
42
+ always@(posedge xClk)
43
+ xCS_sr <= {xCS_sr[2:0], QSPI_CS};
44
+
45
+ always@(posedge xClk)
46
+ begin
47
+ xMcuReqWrite <= 1'd0;
48
+ if(xCS_sr[3:2] == 2'b01)
49
+ xMcuReqWrite <= xRamReady;
50
+ end
51
+
52
+ endmodule
ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/mpmc.v ADDED
@@ -0,0 +1,71 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ // mpmc.v
2
+
3
+ module mpmc(
4
+ input xClk,
5
+
6
+ // PSRAM interface
7
+ input xPsramReady,
8
+ input xPsramDone,
9
+ output reg xPsramReqRead,
10
+ output reg xPsramReqWrite,
11
+ output reg [31:0] xMemAddress,
12
+ output reg [10:0] xBurstLength,
13
+
14
+ // Port 1 (MCU writes)
15
+ input xMcuReqWrite,
16
+ output xMcuActive,
17
+ input [31:0] xMcuAddress,
18
+ input [10:0] xMcuBurstLength,
19
+
20
+ // Port 2 (Emulation reads)
21
+ input xGbReqRead,
22
+ output xGbActive,
23
+ input [31:0] xGbAddress,
24
+ input [10:0] xGbBurstLength
25
+ );
26
+
27
+ reg [1:0] xActiveChannel;
28
+ assign xMcuActive = xActiveChannel == 2'b01;
29
+ assign xGbActive = xActiveChannel == 2'b10;
30
+
31
+ wire xGrantMCU = xMcuReqWrite && xPsramReady;
32
+ // MCU gets priority in case of a tie
33
+ wire xGrantGB = xGbReqRead && xPsramReady && ~xMcuReqWrite;
34
+
35
+ always@(posedge xClk)
36
+ begin
37
+ xPsramReqRead <= xGrantGB;
38
+ xPsramReqWrite <= xGrantMCU;
39
+ end
40
+
41
+ always@(posedge xClk)
42
+ if(xGrantGB)
43
+ begin
44
+ xMemAddress <= xGbAddress;
45
+ xBurstLength <= xGbBurstLength;
46
+ end
47
+ else
48
+ begin
49
+ xMemAddress <= xMcuAddress;
50
+ xBurstLength <= xMcuBurstLength;
51
+ end
52
+
53
+ always@(posedge xClk)
54
+ begin
55
+ case(xActiveChannel)
56
+ // Idle
57
+ 2'b00 :
58
+ begin
59
+ if(xGrantMCU)
60
+ xActiveChannel <= 2'b01;
61
+ else
62
+ if(xGbReqRead && xPsramReady)
63
+ xActiveChannel <= 2'b10;
64
+ end
65
+ // MCU or GB
66
+ default :
67
+ if(xPsramDone)
68
+ xActiveChannel <= 2'b00;
69
+ endcase
70
+ end
71
+ endmodule
ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/overlayBatteryBack.vhd ADDED
@@ -0,0 +1,34 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ library IEEE;
2
+ use IEEE.STD_LOGIC_1164.ALL;
3
+ use IEEE.numeric_std.all;
4
+
5
+ entity overlayBatteryBack is
6
+ port
7
+ (
8
+ screenX : in unsigned(7 downto 0);
9
+ screenY : in unsigned(7 downto 0);
10
+ overlayActive : out std_logic
11
+ );
12
+ end entity;
13
+
14
+ architecture arch of overlayBatteryBack is
15
+
16
+ begin
17
+
18
+ process (all)
19
+ begin
20
+
21
+ overlayActive <= '0';
22
+
23
+ if (screenX >= 141 and screenX <= 157 and screenY >= 3 and screenY <= 18) then
24
+ overlayActive <= '1';
25
+ if (screenX = 157 and (screenY = 3 or screenY = 18)) then overlayActive <= '0'; end if;
26
+ if (screenX = 141 and screenY = 18) then overlayActive <= '0'; end if;
27
+ end if;
28
+
29
+ end process;
30
+
31
+
32
+ end architecture;
33
+
34
+
ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/overlayBatteryFront.vhd ADDED
@@ -0,0 +1,56 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ library IEEE;
2
+ use IEEE.STD_LOGIC_1164.ALL;
3
+ use IEEE.numeric_std.all;
4
+
5
+ entity overlayBatteryFront is
6
+ port
7
+ (
8
+ screenX : in unsigned(7 downto 0);
9
+ screenY : in unsigned(7 downto 0);
10
+ overlayActive : out std_logic
11
+ );
12
+ end entity;
13
+
14
+ architecture arch of overlayBatteryFront is
15
+
16
+ type tpixeldata is array (0 to 15) of std_logic_vector(0 to 16);
17
+ constant pixeldata : tpixeldata :=
18
+ (
19
+ "01111111111111110",
20
+ "10000000000000001",
21
+ "10000000000000001",
22
+ "10000000000000001",
23
+ "10000000000000001",
24
+ "10001111111110001",
25
+ "10001000000010001",
26
+ "10001010000011001",
27
+ "10001010000011001",
28
+ "10001000000010001",
29
+ "10001111111110001",
30
+ "10000000000000001",
31
+ "10000000000000001",
32
+ "10000000000000001",
33
+ "10000000000000001",
34
+ "01111111111111110"
35
+ );
36
+
37
+
38
+ begin
39
+
40
+ process (all)
41
+ begin
42
+
43
+ overlayActive <= '0';
44
+
45
+ if (screenX >= 140 and screenX <= 156 and screenY >= 2 and screenY <= 17) then
46
+ if (pixeldata(to_integer(screenY) - 2)(to_integer(screenX) - 140) = '1') then
47
+ overlayActive <= '1';
48
+ end if;
49
+ end if;
50
+
51
+ end process;
52
+
53
+
54
+ end architecture;
55
+
56
+
ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/overlayDebug.vhd ADDED
@@ -0,0 +1,121 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ library IEEE;
2
+ use IEEE.STD_LOGIC_1164.ALL;
3
+ use IEEE.numeric_std.all;
4
+
5
+ entity overlayDebug is
6
+ port
7
+ (
8
+ screenX : in unsigned(1 downto 0);
9
+ screenY : in unsigned(2 downto 0);
10
+ number : in unsigned(3 downto 0);
11
+ overlayActive : out std_logic
12
+ );
13
+ end entity;
14
+
15
+ architecture arch of overlayDebug is
16
+
17
+ type tpixeldata is array (0 to 4) of std_logic_vector(0 to 2);
18
+ type tpixelarray is array(0 to 15) of tpixeldata;
19
+ constant pixelarray : tpixelarray :=
20
+ (
21
+ ( "111", -- 0
22
+ "101",
23
+ "101",
24
+ "101",
25
+ "111"),
26
+ ( "010", -- 1
27
+ "110",
28
+ "010",
29
+ "010",
30
+ "010"),
31
+ ( "111", -- 2
32
+ "001",
33
+ "111",
34
+ "100",
35
+ "111"),
36
+ ( "111", -- 3
37
+ "001",
38
+ "111",
39
+ "001",
40
+ "111"),
41
+ ( "101", -- 4
42
+ "101",
43
+ "111",
44
+ "001",
45
+ "001"),
46
+ ( "111", -- 5
47
+ "100",
48
+ "111",
49
+ "001",
50
+ "111"),
51
+ ( "111", -- 6
52
+ "100",
53
+ "111",
54
+ "101",
55
+ "111"),
56
+ ( "111", -- 7
57
+ "001",
58
+ "001",
59
+ "001",
60
+ "001"),
61
+ ( "111", -- 8
62
+ "101",
63
+ "111",
64
+ "101",
65
+ "111"),
66
+ ( "111", -- 9
67
+ "101",
68
+ "111",
69
+ "001",
70
+ "111"),
71
+ ( "111", -- A
72
+ "101",
73
+ "111",
74
+ "101",
75
+ "101"),
76
+ ( "110", -- B
77
+ "101",
78
+ "111",
79
+ "101",
80
+ "110"),
81
+ ( "111", -- C
82
+ "100",
83
+ "100",
84
+ "100",
85
+ "111"),
86
+ ( "110", -- D
87
+ "101",
88
+ "101",
89
+ "101",
90
+ "110"),
91
+ ( "111", -- E
92
+ "100",
93
+ "111",
94
+ "100",
95
+ "111"),
96
+ ( "111", -- F
97
+ "100",
98
+ "111",
99
+ "100",
100
+ "100")
101
+ );
102
+
103
+ begin
104
+
105
+ process (all)
106
+ begin
107
+
108
+ overlayActive <= '0';
109
+
110
+ if (screenX < 3 and screenY < 5) then
111
+ if (pixelarray(to_integer(number))(to_integer(screenY))(to_integer(screenX)) = '1') then
112
+ overlayActive <= '1';
113
+ end if;
114
+ end if;
115
+
116
+ end process;
117
+
118
+
119
+ end architecture;
120
+
121
+
ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/overlayTimerBack.vhd ADDED
@@ -0,0 +1,34 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ library IEEE;
2
+ use IEEE.STD_LOGIC_1164.ALL;
3
+ use IEEE.numeric_std.all;
4
+
5
+ entity overlayTimerBack is
6
+ port
7
+ (
8
+ screenX : in unsigned(7 downto 0);
9
+ screenY : in unsigned(7 downto 0);
10
+ overlayActive : out std_logic
11
+ );
12
+ end entity;
13
+
14
+ architecture arch of overlayTimerBack is
15
+
16
+ begin
17
+
18
+ process (all)
19
+ begin
20
+
21
+ overlayActive <= '0';
22
+
23
+ if (screenX >= 2 and screenX <= 40 and screenY >= 3 and screenY <= 18) then
24
+ overlayActive <= '1';
25
+ if (screenX = 40 and (screenY = 3 or screenY = 18)) then overlayActive <= '0'; end if;
26
+ if (screenX = 2 and screenY = 18) then overlayActive <= '0'; end if;
27
+ end if;
28
+
29
+ end process;
30
+
31
+
32
+ end architecture;
33
+
34
+
ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/overlayTimerFront.vhd ADDED
@@ -0,0 +1,33 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ library IEEE;
2
+ use IEEE.STD_LOGIC_1164.ALL;
3
+ use IEEE.numeric_std.all;
4
+
5
+ entity overlayTimerFront is
6
+ port
7
+ (
8
+ screenX : in unsigned(7 downto 0);
9
+ screenY : in unsigned(7 downto 0);
10
+ overlayActive : out std_logic
11
+ );
12
+ end entity;
13
+
14
+ architecture arch of overlayTimerFront is
15
+
16
+ begin
17
+
18
+ process (all)
19
+ begin
20
+
21
+ overlayActive <= '0';
22
+
23
+ if (screenX >= 1 and screenX <= 39 and screenY >= 2 and screenY <= 17) then
24
+ if ( screenX = 1 or screenX = 39 or screenY = 2 or screenY = 17) then overlayActive <= '1'; end if;
25
+ if ((screenX = 1 or screenX = 39) and (screenY = 2 or screenY = 17)) then overlayActive <= '0'; end if;
26
+ end if;
27
+
28
+ end process;
29
+
30
+
31
+ end architecture;
32
+
33
+
ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/overlayTimerNumber.vhd ADDED
@@ -0,0 +1,101 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ library IEEE;
2
+ use IEEE.STD_LOGIC_1164.ALL;
3
+ use IEEE.numeric_std.all;
4
+
5
+ entity overlayTimerNumber is
6
+ port
7
+ (
8
+ screenX : in unsigned(1 downto 0);
9
+ screenY : in unsigned(2 downto 0);
10
+ number : in unsigned(3 downto 0);
11
+ overlayActive : out std_logic
12
+ );
13
+ end entity;
14
+
15
+ architecture arch of overlayTimerNumber is
16
+
17
+ type tpixeldata is array (0 to 4) of std_logic_vector(0 to 2);
18
+ type tpixelarray is array(0 to 11) of tpixeldata;
19
+ constant pixelarray : tpixelarray :=
20
+ (
21
+ ( "111", -- 0
22
+ "101",
23
+ "101",
24
+ "101",
25
+ "111"),
26
+ ( "010", -- 1
27
+ "110",
28
+ "010",
29
+ "010",
30
+ "010"),
31
+ ( "111", -- 2
32
+ "001",
33
+ "111",
34
+ "100",
35
+ "111"),
36
+ ( "111", -- 3
37
+ "001",
38
+ "111",
39
+ "001",
40
+ "111"),
41
+ ( "101", -- 4
42
+ "101",
43
+ "111",
44
+ "001",
45
+ "001"),
46
+ ( "111", -- 5
47
+ "100",
48
+ "111",
49
+ "001",
50
+ "111"),
51
+ ( "111", -- 6
52
+ "100",
53
+ "111",
54
+ "101",
55
+ "111"),
56
+ ( "111", -- 7
57
+ "001",
58
+ "001",
59
+ "001",
60
+ "001"),
61
+ ( "111", -- 8
62
+ "101",
63
+ "111",
64
+ "101",
65
+ "111"),
66
+ ( "111", -- 9
67
+ "101",
68
+ "111",
69
+ "001",
70
+ "111"),
71
+ ( "000", -- :
72
+ "100",
73
+ "000",
74
+ "100",
75
+ "000"),
76
+ ( "000", -- .
77
+ "000",
78
+ "000",
79
+ "000",
80
+ "100")
81
+ );
82
+
83
+ begin
84
+
85
+ process (all)
86
+ begin
87
+
88
+ overlayActive <= '0';
89
+
90
+ if (screenX < 3 and screenY < 5 and number < 12) then
91
+ if (pixelarray(to_integer(number))(to_integer(screenY))(to_integer(screenX)) = '1') then
92
+ overlayActive <= '1';
93
+ end if;
94
+ end if;
95
+
96
+ end process;
97
+
98
+
99
+ end architecture;
100
+
101
+
ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/polling_master.v ADDED
@@ -0,0 +1,368 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ // polling_master.v
2
+ // Poll TLV320 Audio codec
3
+ /// Read volume wheel value (Page0 R117 bits 6:0)
4
+ /// Read GPIO (headphone attached) value(Page0 R51 bit1)
5
+ //// Toggle headphone or speaker
6
+
7
+ // Poll BQ24296MRGER PMIC state
8
+ /// I2C address 0x6B
9
+ /// Write R02 = 10111100 is 0xBC (3008mA)
10
+ /// Read R08 System Status Reg
11
+ /// Read R09 New Fault Register
12
+
13
+ // Poll ATSHA204A encryption
14
+
15
+ module polling_master#(
16
+ parameter I2C_DATA_WIDTH = 8,
17
+ parameter REGISTER_WIDTH = 8,
18
+ parameter ADDRESS_WIDTH = 7
19
+ )(
20
+ input clk,
21
+ input rst,
22
+ input i2c_busy,
23
+ input enable,
24
+ input mute,
25
+
26
+ input [7:0] i2c_miso_data,
27
+
28
+ output reg [7:0] volume,
29
+ output reg [7:0] gpio,
30
+ output reg [7:0] pmic_sys_status,
31
+ output reg [7:0] new_fault,
32
+ output reg [7:0] inlim,
33
+ output reg [7:0] chargeCurrent,
34
+
35
+ output reg i2c_enable,
36
+ output reg i2c_read_write,
37
+ output reg [I2C_DATA_WIDTH-1:0] i2c_mosi_data,
38
+ output reg [REGISTER_WIDTH-1:0] i2c_register_address,
39
+ output reg [ADDRESS_WIDTH-1:0] i2c_device_address
40
+
41
+ );
42
+
43
+ reg [7:0] scount;
44
+ reg [7:0] regindex;
45
+
46
+ localparam CODEC = 7'h18;
47
+ localparam PMIC = 7'h6B;
48
+
49
+ reg [15:0] state;
50
+ localparam S_VOLUME = 16'h0001;
51
+ localparam S_HP_GPIO = 16'h0002;
52
+ localparam S_HP_EN0 = 16'h0004;
53
+ localparam S_HP_EN1 = 16'h0008;
54
+ localparam S_HP_SWPWRDOWN = 16'h0010;
55
+ localparam S_HP_EN2 = 16'h0020;
56
+ localparam S_HP_EN3 = 16'h0040;
57
+ localparam S_HP_EN4 = 16'h0080;
58
+ localparam S_SYS_STATUS = 16'h0100;
59
+ localparam S_NEW_FAULT = 16'h0200;
60
+ localparam S_INLIM = 16'h0400;
61
+ localparam S_CHARGEWRITE = 16'h0800;
62
+ localparam S_CHARGEREAD = 16'h1000;
63
+ localparam S_IDLE = 16'h2000;
64
+
65
+ reg txActive;
66
+
67
+ always@(posedge clk)
68
+ begin
69
+ if(rst)
70
+ begin
71
+ scount <= 'd0;
72
+ i2c_read_write <= 'd0;
73
+ i2c_register_address <= 'd0;
74
+ i2c_mosi_data <= 'd0;
75
+ i2c_device_address <= CODEC;
76
+ i2c_enable <= 'd0;
77
+ regindex <= 'd0;
78
+ state <= S_IDLE;
79
+ end
80
+ else
81
+ case(state)
82
+ S_IDLE:
83
+ begin
84
+ i2c_enable <= 'd0;
85
+ txActive <= 1'd0;
86
+ i2c_read_write <= 'd1; // Read
87
+ if(~i2c_busy && enable)
88
+ begin
89
+ state <= S_VOLUME;
90
+ i2c_device_address <= CODEC;
91
+ i2c_register_address <= 8'd117; // Volume
92
+ end
93
+ end
94
+ S_VOLUME:
95
+ begin
96
+ if(i2c_busy)
97
+ begin
98
+ txActive <= 1'd1;
99
+ i2c_enable <= 'd0;
100
+ end
101
+ else
102
+ if(txActive)
103
+ begin
104
+ i2c_read_write <= 'd1; // Read
105
+ state <= S_HP_GPIO;
106
+ i2c_register_address <= 8'd51; // HP Status
107
+ i2c_device_address <= CODEC;
108
+ volume <= i2c_miso_data;
109
+ txActive <= 1'd0;
110
+ end
111
+ else
112
+ i2c_enable <= 'd1;
113
+ end
114
+ S_HP_GPIO:
115
+ begin
116
+ if(i2c_busy)
117
+ begin
118
+ txActive <= 1'd1;
119
+ i2c_enable <= 'd0;
120
+ end
121
+ else
122
+ if(txActive)
123
+ begin
124
+ gpio <= i2c_miso_data;
125
+ state <= S_HP_EN0;
126
+ i2c_read_write <= 'd0; // Write
127
+ i2c_register_address <= 8'd00; // Page select
128
+ i2c_mosi_data <= 8'd01; // Page 1
129
+ i2c_device_address <= CODEC;
130
+ txActive <= 1'd0;
131
+ end
132
+ else
133
+ i2c_enable <= 'd1;
134
+ end
135
+ S_HP_EN0:
136
+ begin
137
+ if(i2c_busy)
138
+ begin
139
+ txActive <= 1'd1;
140
+ i2c_enable <= 'd0;
141
+ end
142
+ else
143
+ if(txActive)
144
+ begin
145
+ state <= S_HP_EN1;
146
+ i2c_read_write <= 'd0; // Write
147
+ i2c_register_address <= 8'h26; // Left Analog Volume to SPK
148
+ if(gpio[1])
149
+ i2c_mosi_data <= 8'h7F; // Mute Speaker (use headphones)
150
+ else
151
+ i2c_mosi_data <= 8'h00; // Enable speaker (use speaker)
152
+ i2c_device_address <= CODEC;
153
+ txActive <= 1'd0;
154
+ end
155
+ else
156
+ i2c_enable <= 'd1;
157
+ end
158
+ S_HP_EN1:
159
+ begin
160
+ if(i2c_busy)
161
+ begin
162
+ txActive <= 1'd1;
163
+ i2c_enable <= 'd0;
164
+ end
165
+ else
166
+ if(txActive)
167
+ begin
168
+ state <= S_HP_SWPWRDOWN;
169
+ i2c_read_write <= 'd0; // Write
170
+ i2c_register_address <= 8'h1F; // Headphone Driver
171
+ if(gpio[1])
172
+ i2c_mosi_data <= 8'hC4; // Enable driver (use headphones)
173
+ else
174
+ i2c_mosi_data <= 8'h04; // 04 Disable driver (use speaker)
175
+
176
+ i2c_device_address <= CODEC;
177
+ txActive <= 1'd0;
178
+ end
179
+ else
180
+ i2c_enable <= 'd1;
181
+ end
182
+ S_HP_SWPWRDOWN:
183
+ begin
184
+ if(i2c_busy)
185
+ begin
186
+ txActive <= 1'd1;
187
+ i2c_enable <= 'd0;
188
+ end
189
+ else
190
+ if(txActive)
191
+ begin
192
+ state <= S_HP_EN2;
193
+ i2c_read_write <= 'd0; // Write
194
+ i2c_register_address <= 8'h2E; // Headphone Driver
195
+ if(mute)
196
+ i2c_mosi_data <= 8'h80; // software power down - enabled
197
+ else
198
+ i2c_mosi_data <= 8'h00; // software power down - disabled
199
+
200
+ i2c_device_address <= CODEC;
201
+ txActive <= 1'd0;
202
+ end
203
+ else
204
+ i2c_enable <= 'd1;
205
+ end
206
+ S_HP_EN2:
207
+ begin
208
+ if(i2c_busy)
209
+ begin
210
+ txActive <= 1'd1;
211
+ i2c_enable <= 'd0;
212
+ end
213
+ else
214
+ if(txActive)
215
+ begin
216
+ state <= S_HP_EN3;
217
+ i2c_read_write <= 'd0; // Write
218
+ i2c_register_address <= 8'd00; // Page select
219
+ i2c_mosi_data <= 8'd00; // Page 0
220
+ i2c_device_address <= CODEC;
221
+ txActive <= 1'd0;
222
+ end
223
+ else
224
+ i2c_enable <= 'd1;
225
+ end
226
+ S_HP_EN3:
227
+ begin
228
+ if(i2c_busy)
229
+ begin
230
+ txActive <= 1'd1;
231
+ i2c_enable <= 'd0;
232
+ end
233
+ else
234
+ if(txActive)
235
+ begin
236
+ state <= S_HP_EN4;
237
+ i2c_read_write <= 'd0; // Write
238
+ i2c_register_address <= 8'h3F; // DAC Data-Path setup
239
+ if(gpio[1])
240
+ i2c_mosi_data <= 8'hD4; // Power up both dacs
241
+ else
242
+ i2c_mosi_data <= 8'h90; // Power down right DAC, speaker mix both channel
243
+ i2c_device_address <= CODEC;
244
+ txActive <= 1'd0;
245
+ end
246
+ else
247
+ i2c_enable <= 'd1;
248
+ end
249
+ S_HP_EN4:
250
+ begin
251
+ if(i2c_busy)
252
+ begin
253
+ txActive <= 1'd1;
254
+ i2c_enable <= 'd0;
255
+ end
256
+ else
257
+ if(txActive)
258
+ begin
259
+ i2c_read_write <= 'd1; // Read
260
+ state <= S_SYS_STATUS;
261
+ i2c_register_address <= 8'd08; // System Status
262
+ i2c_device_address <= PMIC;
263
+ txActive <= 1'd0;
264
+ end
265
+ else
266
+ i2c_enable <= 'd1;
267
+ end
268
+ S_SYS_STATUS:
269
+ begin
270
+ if(i2c_busy)
271
+ begin
272
+ txActive <= 1'd1;
273
+ i2c_enable <= 'd0;
274
+ end
275
+ else
276
+ if(txActive)
277
+ begin
278
+ i2c_read_write <= 'd1; // Read
279
+ state <= S_NEW_FAULT;
280
+ i2c_register_address <= 8'd09; // Fault Status
281
+ i2c_device_address <= PMIC;
282
+ pmic_sys_status <= i2c_miso_data;
283
+ txActive <= 1'd0;
284
+ end
285
+ else
286
+ i2c_enable <= 'd1;
287
+ end
288
+ S_NEW_FAULT:
289
+ begin
290
+ if(i2c_busy)
291
+ begin
292
+ txActive <= 1'd1;
293
+ i2c_enable <= 'd0;
294
+ end
295
+ else
296
+ if(txActive)
297
+ begin
298
+ i2c_read_write <= 'd1; // Read
299
+ state <= S_INLIM;
300
+ i2c_register_address <= 8'd00; // Input Limit
301
+ i2c_device_address <= PMIC;
302
+ new_fault <= i2c_miso_data;
303
+ txActive <= 1'd0;
304
+ end
305
+ else
306
+ i2c_enable <= 'd1;
307
+ end
308
+ S_INLIM:
309
+ begin
310
+ if(i2c_busy)
311
+ begin
312
+ txActive <= 1'd1;
313
+ i2c_enable <= 'd0;
314
+ end
315
+ else
316
+ if(txActive)
317
+ begin
318
+ i2c_read_write <= 'd0; // Write
319
+ state <= S_CHARGEWRITE;
320
+ i2c_register_address <= 8'd02; // Charge Current Control
321
+ i2c_device_address <= PMIC;
322
+ inlim <= i2c_miso_data;
323
+ i2c_mosi_data <= 8'h20;
324
+ txActive <= 1'd0;
325
+ end
326
+ else
327
+ i2c_enable <= 'd1;
328
+ end
329
+ S_CHARGEWRITE:
330
+ begin
331
+ if(i2c_busy)
332
+ begin
333
+ txActive <= 1'd1;
334
+ i2c_enable <= 'd0;
335
+ end
336
+ else
337
+ if(txActive)
338
+ begin
339
+ i2c_read_write <= 'd1; // Read
340
+ state <= S_CHARGEREAD;
341
+ i2c_register_address <= 8'd02; // Charge Current Control
342
+ i2c_device_address <= PMIC;
343
+ txActive <= 1'd0;
344
+ end
345
+ else
346
+ i2c_enable <= 'd1;
347
+ end
348
+ S_CHARGEREAD:
349
+ begin
350
+ if(i2c_busy)
351
+ begin
352
+ txActive <= 1'd1;
353
+ i2c_enable <= 'd0;
354
+ end
355
+ else
356
+ if(txActive)
357
+ begin
358
+ state <= S_IDLE;
359
+ txActive <= 1'd0;
360
+ chargeCurrent <= i2c_miso_data;
361
+ end
362
+ else
363
+ i2c_enable <= 'd1;
364
+ end
365
+ endcase
366
+ end
367
+
368
+ endmodule
ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/qspi_slave.v ADDED
@@ -0,0 +1,116 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ // QSPI_Slave.v
2
+
3
+ module QSPI_Slave(
4
+ input QSPI_CLK,
5
+ input QSPI_CS,
6
+ input QSPI_MOSI,
7
+ input QSPI_MISO,
8
+ input QSPI_WP,
9
+ input QSPI_HD,
10
+
11
+ output qMenuInit,
12
+ output qDataValid,
13
+ output [15:0] qData,
14
+ output reg [31:0] qAddress = 'd0,
15
+ output reg [9:0] qLength = 'd0,
16
+ output reg qCommand = 'd0
17
+ );
18
+
19
+ reg qAddReady = 'd0;
20
+ reg qLenReady = 'd0;
21
+
22
+ reg [3:0] qPins_r1 = 'd0;
23
+ reg [7:0] qDataByte = 'd0;
24
+ reg qCyclePhase = 'd0;
25
+
26
+ reg qValid = 'd0;
27
+ wire [3:0] qPins = {
28
+ QSPI_HD,
29
+ QSPI_WP,
30
+ QSPI_MISO,
31
+ QSPI_MOSI};
32
+
33
+ reg [7:0] qCycleCount = 'd0;
34
+
35
+ reg qMenuInit1 = 1'd0;
36
+ reg qMenuInit2 = 1'd0;
37
+ assign qMenuInit = qMenuInit2;
38
+
39
+ always@(posedge QSPI_CLK or posedge QSPI_CS)
40
+ begin
41
+ if(QSPI_CS)
42
+ begin
43
+ qCyclePhase <= 1'd0;
44
+ qValid <= 1'd0;
45
+ qCycleCount <= 1'd0;
46
+ qCommand <= 1'd0;
47
+ qAddReady <= 1'd0;
48
+ qLenReady <= 1'd0;
49
+ end
50
+ else
51
+ begin
52
+ if(qCycleCount <= 50)
53
+ qCycleCount <= qCycleCount + 1'd1;
54
+
55
+ // Command
56
+ if(qCycleCount == 0)
57
+ qCommand <= QSPI_MOSI;
58
+
59
+ if((qCycleCount >= 1) && (qCycleCount <= 10))
60
+ qLength <= {qLength[8:0], QSPI_MOSI};
61
+
62
+ if((qCycleCount >= 11) && (qCycleCount <= 42))
63
+ qAddress <= {qAddress[30:0], QSPI_MOSI};
64
+
65
+ if(qCycleCount == 11)
66
+ qLenReady <= 1'd1;
67
+ else
68
+ qLenReady <= 1'd0;
69
+
70
+ if(qCycleCount == 43)
71
+ begin
72
+ qAddReady <= 1'd1;
73
+ if(qAddress == 0) // first row
74
+ begin
75
+ qMenuInit1 <= 1'd1;
76
+ if(qMenuInit1)
77
+ qMenuInit2 <= 1'd1;
78
+ end
79
+ end
80
+ else
81
+ qAddReady <= 1'd0;
82
+
83
+ // QSPI data
84
+ if(qCycleCount >= 46)
85
+ begin
86
+ qCyclePhase <= ~qCyclePhase;
87
+ if(qCyclePhase)
88
+ begin
89
+ qDataByte <= {qPins_r1,qPins};
90
+ qValid <= 1'd1;
91
+ end
92
+ else
93
+ begin
94
+ qPins_r1 <= qPins;
95
+ qValid <= 1'd0;
96
+ end
97
+ end
98
+ end
99
+ end
100
+
101
+ reg [7:0] qDataByte_r1 = 'd0;
102
+ reg QSPI_VALID_phase = 'd0;
103
+ always@(posedge QSPI_CLK or posedge QSPI_CS)
104
+ if(QSPI_CS)
105
+ QSPI_VALID_phase <= 'd0;
106
+ else
107
+ if(qValid)
108
+ begin
109
+ qDataByte_r1 <= qDataByte;
110
+ QSPI_VALID_phase <= ~QSPI_VALID_phase;
111
+ end
112
+
113
+ assign qDataValid = qValid&QSPI_VALID_phase;
114
+ assign qData = {qDataByte,qDataByte_r1};
115
+
116
+ endmodule
ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/system_monitor.sv ADDED
@@ -0,0 +1,519 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ // system_monitor.v
2
+
3
+ module system_monitor(
4
+ input clk,
5
+ input reset,
6
+ input BTN_A,
7
+ input BTN_B,
8
+ input BTN_DPAD_DOWN,
9
+ input BTN_DPAD_LEFT,
10
+ input BTN_DPAD_RIGHT,
11
+ input BTN_DPAD_UP,
12
+ input BTN_MENU, // pressed = 0
13
+ input BTN_SEL,
14
+ input BTN_START,
15
+ // Controls external mux into ADC
16
+ output reg menuDisabled,
17
+ output reg ADC_SEL,
18
+ output reg hAdcReq_ext,
19
+ input LCD_INIT_DONE,
20
+ output reg LCD_PWM,
21
+ output reg LCD_BACKLIGHT_INIT = 1'd0,
22
+ input hAdcReady_r1,
23
+ input [13:0] hAdcValue_r1,
24
+ input [8:0] hButtons,
25
+ output reg [8:0] MCU_buttons,
26
+ input [6:0] hVolume,
27
+ input [7:0] pmic_sys_status,
28
+ input hHeadphones,
29
+ input gSecondEna,
30
+ input gHalfSecondEna,
31
+ output reg low_battery,
32
+ output reg LED_Green,
33
+ output reg LED_Red,
34
+ output reg LED_Yellow,
35
+ output reg LED_White,
36
+ output reg [15:0] system_control,
37
+ output reg [31:0] debug_system,
38
+ output reg [63:0] paletteBGIn,
39
+ output reg [63:0] paletteOBJ0In,
40
+ output reg [63:0] paletteOBJ1In,
41
+ input gbc_mode,
42
+ input [63:0] gpd,
43
+ input [7:0] uart_rx_data,
44
+ input uart_rx_val,
45
+ input uart_tx_busy,
46
+ output [7:0] uart_tx_data,
47
+ output uart_tx_val
48
+ );
49
+
50
+ wire [6:0] rx_address;
51
+ wire [79:0] rx_data;
52
+ wire rx_data_val;
53
+
54
+ reg [15:0] btnMenu_sr;
55
+ reg btnMenu_r1;
56
+ reg btnMenu_r2;
57
+
58
+ reg [15:0] btnDown_sr;
59
+ reg btnDown_r1;
60
+ reg btnDown_r2;
61
+
62
+ reg [15:0] btnUp_sr;
63
+ reg btnUp_r1;
64
+ reg btnUp_r2;
65
+
66
+ reg [15:0] btnLeft_sr;
67
+ reg btnLeft_r1;
68
+ reg btnLeft_r2;
69
+
70
+ reg [15:0] btnRight_sr;
71
+ reg btnRight_r1;
72
+ reg btnRight_r2;
73
+
74
+ reg btnStart_r1;
75
+ reg btnStart_r2;
76
+ reg btnSelect_r1;
77
+ reg btnSelect_r2;
78
+ reg btnA_r1;
79
+ reg btnA_r2;
80
+ reg btnB_r1;
81
+ reg btnB_r2;
82
+
83
+ reg pressed;
84
+ reg [3:0] brightness = 4'd3;
85
+ reg [1:0] blockBrightnessReceive;
86
+
87
+ reg request_buttons = 1'b0;
88
+ reg request_version = 1'b0;
89
+ reg updateBrightness = 1'b0;
90
+ reg request_gpd = 1'b0;
91
+
92
+ reg lowpowerBacklight = 1'b0;
93
+ reg [3:0] lowerpowerOldBL;
94
+ reg request_SystemStatusExtended = 1'b0;
95
+
96
+ reg [13:0] volt;
97
+ wire bat_is_LI;
98
+
99
+ always@(posedge clk or posedge reset)
100
+ begin
101
+ if(reset) begin
102
+ system_control <= 16'd0;
103
+ MCU_buttons <= 9'd0;
104
+ request_gpd <= 1'b0;
105
+ end else begin
106
+ request_buttons <= 1'b0;
107
+ request_version <= 1'b0;
108
+ updateBrightness <= 1'b0;
109
+ request_SystemStatusExtended <= 1'b0;
110
+
111
+ if (gHalfSecondEna) begin
112
+ LCD_BACKLIGHT_INIT <= 1'd1;
113
+ end
114
+
115
+ if(rx_data_val)
116
+ begin
117
+ if(rx_address == 7'hD) begin
118
+ request_gpd <= 1'b1;
119
+ end
120
+ if(rx_address == 7'hC) begin
121
+ if (rx_data[63]) begin
122
+ paletteOBJ1In <= rx_data[63:0];
123
+ end else begin
124
+ paletteOBJ0In <= rx_data[63:0];
125
+ end
126
+ end
127
+ if(rx_address == 7'hB) begin
128
+ paletteBGIn <= rx_data[63:0];
129
+ end
130
+ if(rx_address == 7'd9) begin
131
+ MCU_buttons <= rx_data[8:0];
132
+ end
133
+ if(rx_address == 7'd6) begin
134
+ request_version <= 1'b1;
135
+ end
136
+ if(rx_address == 7'd5) begin
137
+ if (blockBrightnessReceive == 2'd0) begin
138
+ brightness <= rx_data[13:0];
139
+ end else begin
140
+ blockBrightnessReceive <= blockBrightnessReceive - 1;
141
+ end
142
+ end
143
+ if(rx_address == 7'd4) begin
144
+ system_control <= rx_data[15:0];
145
+ end
146
+ if(rx_address == 7'd2) begin
147
+ request_buttons <= 1'b1;
148
+ end
149
+ end
150
+
151
+ if (menuDisabled) begin
152
+ if((btnLeft_sr[15:0] == 16'h8000)&&~btnMenu_r2) begin
153
+ if(brightness >= 1)
154
+ begin
155
+ brightness <= brightness - 9'd1;
156
+ pressed <= 1'd0;
157
+ blockBrightnessReceive <= 2'd3;
158
+ updateBrightness <= 1'b1;
159
+ end
160
+ end
161
+ if((btnRight_sr[15:0] == 16'h8000)&&~btnMenu_r2) begin
162
+ if(brightness != 15)
163
+ begin
164
+ pressed <= 1'd0;
165
+ brightness <= brightness + 9'd1;
166
+ blockBrightnessReceive <= 2'd3;
167
+ updateBrightness <= 1'b1;
168
+ end
169
+ end
170
+ end
171
+
172
+ if (lowpowerBacklight) begin
173
+ brightness <= 4'd0;
174
+ updateBrightness <= 1'b0;
175
+ end
176
+
177
+ if (volt >= 700) begin // ~1.8V
178
+ if (~lowpowerBacklight && ~bat_is_LI && volt < 979) begin // below 2.55 V
179
+ request_SystemStatusExtended <= 1'b1;
180
+ lowpowerBacklight <= 1'b1;
181
+ lowerpowerOldBL <= brightness;
182
+ end
183
+
184
+ if (lowpowerBacklight && ~bat_is_LI && volt > 1293) begin // above 3.4 V
185
+ request_SystemStatusExtended <= 1'b1;
186
+ lowpowerBacklight <= 1'b0;
187
+ brightness <= lowerpowerOldBL;
188
+ end
189
+ end
190
+
191
+ if (write_done && tx_channel == 9 && request_gpd) begin
192
+ request_gpd <= 1'b0; // Clear after sending once
193
+ end
194
+
195
+ end
196
+ end
197
+
198
+ reg menuDown = 1'b0;
199
+ always@(posedge clk)
200
+ begin
201
+ if(reset) begin
202
+ menuDisabled <= 1'b1;
203
+ end else begin
204
+ btnMenu_r1 <= BTN_MENU;
205
+ btnMenu_r2 <= btnMenu_r1;
206
+ btnMenu_sr <= {btnMenu_sr[14:0], btnMenu_r2};
207
+ if(btnMenu_sr[15:0] == 16'h8000) begin
208
+ menuDown <= 1'b1;
209
+ end
210
+ if(btnMenu_sr[15:0] == 16'h7FFF && menuDown) begin
211
+ menuDisabled <= ~menuDisabled;
212
+ menuDown <= 1'b0;
213
+ end
214
+
215
+ if (btnA_r2 | btnB_r2 | btnDown_r2 | btnUp_r2 | btnLeft_r2 | btnRight_r2 | btnSelect_r2 | btnStart_r2) menuDown <= 1'b0;
216
+
217
+ btnDown_r1 <= BTN_DPAD_DOWN;
218
+ btnDown_r2 <= btnDown_r1;
219
+ btnDown_sr <= {btnDown_sr[14:0], btnDown_r2};
220
+
221
+ btnUp_r1 <= BTN_DPAD_UP;
222
+ btnUp_r2 <= btnUp_r1;
223
+ btnUp_sr <= {btnUp_sr[14:0], btnUp_r2};
224
+
225
+ btnLeft_r1 <= BTN_DPAD_LEFT;
226
+ btnLeft_r2 <= btnLeft_r1;
227
+ btnLeft_sr <= {btnLeft_sr[14:0], btnLeft_r2};
228
+
229
+ btnRight_r1 <= BTN_DPAD_RIGHT;
230
+ btnRight_r2 <= btnRight_r1;
231
+ btnRight_sr <= {btnRight_sr[14:0], btnRight_r2};
232
+
233
+ btnSelect_r1 <= BTN_SEL;
234
+ btnSelect_r2 <= btnSelect_r1;
235
+
236
+ btnStart_r1 <= BTN_START;
237
+ btnStart_r2 <= btnStart_r1;
238
+
239
+ btnA_r1 <= BTN_A;
240
+ btnA_r2 <= btnA_r1;
241
+
242
+ btnB_r1 <= BTN_B;
243
+ btnB_r2 <= btnB_r1;
244
+
245
+ end
246
+ end
247
+
248
+ reg [7:0] lcdcount;
249
+ always@(posedge clk)
250
+ if(lcdcount < 448)
251
+ lcdcount <= lcdcount + 1'd1;
252
+ else
253
+ lcdcount <= 'd0;
254
+
255
+ assign LCD_PWM = LCD_INIT_DONE&LCD_BACKLIGHT_INIT ? (lcdcount <= {brightness[3:0], 4'd0}) : 1'd0;
256
+
257
+
258
+ // 8.388608Mhz clock -> ~119.2ns
259
+ // 0.005s / 119.2ns = 41946
260
+
261
+ localparam ADC_INTERVAL_CYCLES = 'd41946;
262
+ reg [15:0] adc_timer;
263
+ reg [9:0] startup_cnt; // wait for ~4 seconds to have stable measurements
264
+ reg signed [10:0] startup_select; // measure if AA or lithium is used, negative -> LI, positive -> AA
265
+ reg startup_done = 1'b0;
266
+
267
+ always@(posedge clk) begin
268
+ if(adc_timer < ADC_INTERVAL_CYCLES) begin
269
+ adc_timer <= adc_timer + 1'd1;
270
+ hAdcReq_ext <= 'd0;
271
+ // Toggle the mux slightly ahead of starting the measurement
272
+ if (startup_done) begin
273
+ ADC_SEL <= startup_select[10];
274
+ end else if(adc_timer == ADC_INTERVAL_CYCLES - 1000) begin
275
+ ADC_SEL <= ~ADC_SEL;
276
+ end
277
+ end else begin
278
+ adc_timer <= 'd0;
279
+ hAdcReq_ext <= 'd1;
280
+ end
281
+ end
282
+
283
+ assign bat_is_LI = startup_select[10];
284
+ reg [21:0] volt_sum;
285
+ reg [8:0] volt_cnt;
286
+ reg transmitVolt;
287
+
288
+ wire [13:0] VOLTAGE_FULL = bat_is_LI ? 14'd1423 : 14'd1367; // 3.75V LI : 3.6V AA
289
+ wire [13:0] VOLTAGE_CRIT = bat_is_LI ? 14'd1145 : 14'd997; // 3.0V LI : 2.6V AA
290
+ wire [13:0] VOLTAGE_RED = bat_is_LI ? 14'd1182 : 14'd1071; // 3.1V LI : 2.8V AA
291
+
292
+ reg blink;
293
+
294
+ always@(posedge clk or posedge reset) begin
295
+
296
+ if(reset) begin
297
+ low_battery <= 1'd0;
298
+ LED_Red <= 1'd0;
299
+ LED_Green <= 1'd0;
300
+ LED_Yellow <= 1'd0;
301
+ blink <= 1'd0;
302
+ volt <= 14'd0;
303
+ volt_sum <= 22'd0;
304
+ volt_cnt <= 9'd0;
305
+ startup_cnt <= 11'd0;
306
+ startup_select <= 11'd0;
307
+ startup_done <= 1'b0;
308
+ transmitVolt <= 1'b0;
309
+ end else begin
310
+
311
+ transmitVolt <= 1'b0;
312
+
313
+ debug_system <= {1'd0 , startup_select, 6'd0, volt };
314
+
315
+ if(hAdcReady_r1) begin
316
+ if (~startup_cnt[9]) begin // wait for ~4 seconds to have stable measurements
317
+ startup_cnt <= startup_cnt + 1'd1;
318
+ end
319
+
320
+ if (startup_done) begin // average values for determined type only
321
+ volt_sum <= volt_sum + hAdcValue_r1;
322
+ volt_cnt <= volt_cnt + 1;
323
+ end else if (startup_cnt[9] && hAdcValue_r1 >= 700) begin // measure if AA or lithium is used, negative -> LI, positive -> AA
324
+ if (ADC_SEL) begin
325
+ startup_select <= startup_select - 1'd1;
326
+ end else begin
327
+ startup_select <= startup_select + 1'd1;
328
+ end
329
+ end
330
+
331
+ if (startup_select > 11'sd127 || startup_select < -11'sd127) begin // determine type based on which delivered higher values for some seconds
332
+ startup_done <= 1'b1;
333
+ end
334
+ end
335
+
336
+ if (volt_cnt[8]) begin
337
+ volt_sum <= 22'd0;
338
+ volt_cnt <= 9'd0;
339
+ volt <= volt_sum[21:8];
340
+ transmitVolt <= 1'b1;
341
+ end
342
+
343
+ if (gSecondEna) blink <= ~blink;
344
+
345
+ low_battery <= 1'd0;
346
+ LED_Red <= 1'd0;
347
+ LED_Green <= 1'd0;
348
+ LED_Yellow <= 1'd0;
349
+ LED_White <= 1'd0;
350
+
351
+ if (volt >= 700) begin // ~1.8V
352
+
353
+ if (pmic_sys_status[2]) begin // charging
354
+
355
+ if(bat_is_LI && volt < VOLTAGE_FULL) begin
356
+ LED_White <= 1'd1;
357
+ end
358
+
359
+ end else begin
360
+
361
+ if(volt < VOLTAGE_RED) begin
362
+ low_battery <= 1'd1;
363
+ if (blink) LED_Red <= 1'd1;
364
+ end
365
+
366
+ end
367
+
368
+ end
369
+ end
370
+ end
371
+
372
+ wire [6:0] tx_address;
373
+ wire write;
374
+
375
+ wire [13:0] buttons = {
376
+ 4'd0,
377
+ menuDisabled,
378
+ ~BTN_MENU,
379
+ BTN_DPAD_DOWN,
380
+ BTN_DPAD_LEFT,
381
+ BTN_DPAD_RIGHT,
382
+ BTN_DPAD_UP,
383
+ BTN_A,
384
+ BTN_B,
385
+ BTN_SEL,
386
+ BTN_START
387
+ };
388
+
389
+ reg [13:0] version = {
390
+ 1'd0, // 1 bit reserved
391
+ 1'd0, // 1 bit debug,
392
+ 6'd8, // 6 bits minor version
393
+ 6'd18 // 6 bits major version
394
+ };
395
+
396
+ localparam NUM_CH = 10;
397
+ wire [$clog2(NUM_CH)-1:0] tx_channel;
398
+
399
+ wire [NUM_CH-1:0] channelsNewDataValid =
400
+ {
401
+ request_gpd, // Game Palette Data
402
+ ~menuDisabled | request_SystemStatusExtended, // System Status Extended
403
+ ~menuDisabled, // reserved
404
+ ~menuDisabled | request_version, // version info
405
+ ~menuDisabled, // pmic sys status
406
+ ~menuDisabled, // System Control
407
+ ~menuDisabled | updateBrightness, // Audio + Brightness
408
+ ~menuDisabled | request_buttons, // Buttons
409
+ (~menuDisabled & transmitVolt & bat_is_LI), // Lithium
410
+ (~menuDisabled & transmitVolt & ~bat_is_LI) // AA
411
+ };
412
+
413
+ wire [13:0] audio_brightness = {2'd0, brightness, hHeadphones, hVolume};
414
+ wire [13:0] mic_sys_status = {6'd0 , pmic_sys_status};
415
+
416
+ wire [7:0] tx_byteCount = (tx_channel == 0) ? 8'd2 : // AA
417
+ (tx_channel == 1) ? 8'd2 : // Lithium
418
+ (tx_channel == 2) ? 8'd2 : // Buttons
419
+ (tx_channel == 3) ? 8'd2 : // Audio + Brightness
420
+ (tx_channel == 4) ? 8'd2 : // System Control
421
+ (tx_channel == 5) ? 8'd2 : // pmic sys status
422
+ (tx_channel == 6) ? 8'd2 : // version info
423
+ (tx_channel == 7) ? 8'd4 : // reserved
424
+ (tx_channel == 8) ? 8'd4 : // System Status Extended
425
+ (tx_channel == 9) ? 8'd8 : // BG Palette Data
426
+ 8'd1;
427
+
428
+ wire [7:0] tx_bytepos;
429
+
430
+ wire [7:0] tx_senddata = (tx_channel == 0 && tx_bytepos == 0) ? {2'd0, volt[13:8]} : // AA
431
+ (tx_channel == 0 && tx_bytepos == 1) ? volt[7:0] :
432
+
433
+ (tx_channel == 1 && tx_bytepos == 0) ? {2'd0, volt[13:8]} : // Lithium
434
+ (tx_channel == 1 && tx_bytepos == 1) ? volt[7:0] :
435
+
436
+ (tx_channel == 2 && tx_bytepos == 0) ? {2'd0, buttons[13:8]} : // Buttons
437
+ (tx_channel == 2 && tx_bytepos == 1) ? buttons[7:0] :
438
+
439
+ (tx_channel == 3 && tx_bytepos == 0) ? {2'd0, audio_brightness[13:8]} : // Audio + Brightness
440
+ (tx_channel == 3 && tx_bytepos == 1) ? audio_brightness[7:0] :
441
+
442
+ (tx_channel == 4 && tx_bytepos == 0) ? {2'd0, system_control[13:8]} : // System Control
443
+ (tx_channel == 4 && tx_bytepos == 1) ? system_control[7:0] :
444
+
445
+ (tx_channel == 5 && tx_bytepos == 0) ? {2'd0, mic_sys_status[13:8]} : // pmic sys status
446
+ (tx_channel == 5 && tx_bytepos == 1) ? mic_sys_status[7:0] :
447
+
448
+ (tx_channel == 6 && tx_bytepos == 0) ? {2'd0, version[13:8]} : // version info
449
+ (tx_channel == 6 && tx_bytepos == 1) ? version[7:0] :
450
+
451
+ (tx_channel == 7 && tx_bytepos == 0) ? 8'd0 : // reserved
452
+ (tx_channel == 7 && tx_bytepos == 1) ? 8'd0 :
453
+ (tx_channel == 7 && tx_bytepos == 2) ? 8'd0 :
454
+ (tx_channel == 7 && tx_bytepos == 3) ? 8'd0 :
455
+
456
+ (tx_channel == 8 && tx_bytepos == 0) ? {6'd0, gbc_mode, lowpowerBacklight} : // System Status Extended
457
+ (tx_channel == 8 && tx_bytepos == 1) ? 8'd0 :
458
+ (tx_channel == 8 && tx_bytepos == 2) ? 8'd0 :
459
+ (tx_channel == 8 && tx_bytepos == 3) ? 8'd0 :
460
+
461
+ (tx_channel == 9 && tx_bytepos == 0) ? gpd[7:0] : // Combined Game Palette Data
462
+ (tx_channel == 9 && tx_bytepos == 1) ? gpd[15:8] :
463
+ (tx_channel == 9 && tx_bytepos == 2) ? gpd[23:16] :
464
+ (tx_channel == 9 && tx_bytepos == 3) ? gpd[31:24] :
465
+ (tx_channel == 9 && tx_bytepos == 4) ? gpd[39:32] :
466
+ (tx_channel == 9 && tx_bytepos == 5) ? gpd[47:40] :
467
+ (tx_channel == 9 && tx_bytepos == 6) ? gpd[55:48] :
468
+ (tx_channel == 9 && tx_bytepos == 7) ? gpd[63:56] :
469
+ 8'd0;
470
+
471
+ wire uartDisabled;
472
+
473
+ system_monitor_arbiter
474
+ #(
475
+ .NUM_CH(NUM_CH)
476
+ ) u_system_monitor_arbiter
477
+ (
478
+ .clk(clk),
479
+ .reset(reset),
480
+ .uartDisabled(uartDisabled),
481
+ .menuDisabled(menuDisabled),
482
+ .channelsNewDataValid(channelsNewDataValid),
483
+ .uart_tx_busy(uart_tx_busy),
484
+ .tx_address(tx_address),
485
+ .tx_channel(tx_channel),
486
+ .write_done(write_done),
487
+ .write(write)
488
+ );
489
+
490
+ uart_packet_wrapper_tx u_uart_packet_wrapper_tx
491
+ (
492
+ .clk(clk),
493
+ .reset(reset),
494
+ .uart_tx_busy(uart_tx_busy),
495
+ .uart_tx_data(uart_tx_data),
496
+ .uart_tx_val(uart_tx_val),
497
+ .uartDisabled(uartDisabled),
498
+ .menuDisabled(menuDisabled),
499
+ .write(write),
500
+ .write_done(write_done),
501
+ .tx_address(tx_address),
502
+ .tx_byteCount(tx_byteCount),
503
+ .tx_bytepos(tx_bytepos),
504
+ .tx_senddata(tx_senddata)
505
+ );
506
+
507
+ uart_packet_wrapper_rx u_uart_packet_wrapper_rx
508
+ (
509
+ .clk(clk),
510
+ .reset(reset),
511
+ .uart_rx_val(uart_rx_val),
512
+ .uart_rx_data(uart_rx_data),
513
+ .uartDisabled(uartDisabled),
514
+ .rx_address(rx_address),
515
+ .rx_data(rx_data),
516
+ .rx_data_val(rx_data_val)
517
+ );
518
+
519
+ endmodule
ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/system_monitor_arbiter.sv ADDED
@@ -0,0 +1,106 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+
2
+ module system_monitor_arbiter
3
+ #(
4
+ parameter NUM_CH = 8
5
+ )
6
+ (
7
+ input clk,
8
+ input reset,
9
+ input [NUM_CH-1:0] channelsNewDataValid,
10
+ input menuDisabled,
11
+ input uart_tx_busy,
12
+ input write_done,
13
+ output uartDisabled,
14
+ output [$clog2(NUM_CH)-1:0] tx_channel,
15
+ output reg [6:0] tx_address = 'd0,
16
+ output reg write
17
+ );
18
+
19
+ reg channelsDataRefreshRequest [NUM_CH-1:0] = '{default: 0};
20
+ reg [$clog2(NUM_CH)-1:0] active_channel = 'd0;
21
+ reg [$clog2(NUM_CH)-1:0] next_channel = 'd0;
22
+ reg write_active;
23
+ reg arbiter_active;
24
+ reg button_next = 1'b0;
25
+
26
+
27
+ assign tx_channel = active_channel;
28
+
29
+ genvar g;
30
+ generate
31
+ for(g = 0; g < NUM_CH; g++)
32
+ begin : channels
33
+ always@(posedge clk)
34
+ begin
35
+ if(channelsNewDataValid[g])
36
+ begin
37
+ channelsDataRefreshRequest[g] <= 1'd1;
38
+ end
39
+ else
40
+ if((active_channel == g)&&(write_done))
41
+ channelsDataRefreshRequest[g] <= 1'd0;
42
+ end
43
+ end
44
+ endgenerate
45
+
46
+ assign uartDisabled = ~arbiter_active;
47
+ always@(posedge clk or posedge reset)
48
+ begin
49
+ if(reset)
50
+ begin
51
+ active_channel <= 'd0;
52
+ write <= 'd0;
53
+ write_active <= 'd0;
54
+ arbiter_active <= 'd0;
55
+ end
56
+ else
57
+ begin
58
+ arbiter_active <= 1'd1;
59
+
60
+ if((channelsDataRefreshRequest[active_channel] == 'd0) & arbiter_active)
61
+ begin
62
+ if(active_channel < NUM_CH - 1)
63
+ active_channel <= active_channel + 1'd1;
64
+ else
65
+ active_channel <= 'd0;
66
+ end
67
+ else
68
+ begin
69
+ if(~write_active & arbiter_active)
70
+ begin
71
+ if(~uart_tx_busy)
72
+ begin
73
+ write_active <= 1'd1;
74
+ write <= 1'd1;
75
+ tx_address <= active_channel;
76
+ end
77
+ end
78
+ else
79
+ begin
80
+ write <= 1'd0;
81
+ if(write_done)
82
+ begin
83
+ if(menuDisabled)
84
+ arbiter_active <= 1'd0;
85
+
86
+ write_active <= 1'd0;
87
+
88
+ button_next <= ~button_next;
89
+ if (button_next) begin
90
+ active_channel <= 'd2;
91
+ end else begin
92
+ if(next_channel < NUM_CH - 1) begin
93
+ next_channel <= next_channel + 1'd1;
94
+ active_channel <= next_channel + 1'd1;
95
+ end else begin
96
+ next_channel <= 'd0;
97
+ active_channel <= 'd0;
98
+ end
99
+ end
100
+ end
101
+ end
102
+ end
103
+ end
104
+ end
105
+
106
+ endmodule
ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/tlv320_init.v ADDED
@@ -0,0 +1,90 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ // tlv320_init.v
2
+ // Contains a ROM with a default register set, masters I2C controller
3
+
4
+ module tlv320_init#(
5
+ parameter I2C_DATA_WIDTH = 8,
6
+ parameter REGISTER_WIDTH = 8,
7
+ parameter ADDRESS_WIDTH = 7
8
+
9
+ )(
10
+ input pclk,
11
+ input vb_rst,
12
+ input i2c_busy,
13
+
14
+ output reg tlv320_init_done,
15
+ output reg i2c_enable,
16
+ output reg i2c_read_write,
17
+ output reg [I2C_DATA_WIDTH-1:0] i2c_mosi_data,
18
+ output reg [REGISTER_WIDTH-1:0] i2c_register_address,
19
+ output reg [ADDRESS_WIDTH-1:0] i2c_device_address
20
+
21
+ );
22
+
23
+ localparam numregs = 64;
24
+ localparam numregsactual = 64;
25
+ reg [15:0] tlv320regs [numregs-1:0] /* synthesis syn_romstyle = "distributed_rom" */;
26
+ initial
27
+ begin
28
+ $readmemh("tlv320regs.hex", tlv320regs);
29
+ end
30
+
31
+ reg [7:0] scount;
32
+ reg [7:0] regindex;
33
+ reg [23:0] regvalue;
34
+ always@(posedge pclk)
35
+ regvalue <= tlv320regs[regindex];
36
+
37
+ always@(posedge pclk)
38
+ begin
39
+ if(vb_rst)
40
+ begin
41
+ scount <= 'd0;
42
+ i2c_read_write <= 'd0;
43
+ i2c_register_address <= 'd0;
44
+ i2c_mosi_data <= 'd0;
45
+ i2c_device_address <= 'd0;
46
+ i2c_enable <= 'd0;
47
+ regindex <= 'd0;
48
+ tlv320_init_done <= 'd0;
49
+ end
50
+ else
51
+ case(scount)
52
+ 0:
53
+ begin
54
+ i2c_read_write <= 'd0;
55
+ i2c_register_address <= regvalue[15:8];
56
+ i2c_mosi_data <= regvalue[7:0];
57
+ i2c_device_address <= 7'h18;
58
+ i2c_enable <= 'd0;
59
+ scount <= scount + 1'd1;
60
+ end
61
+ 1:
62
+ // if master is not busy start a write
63
+ if(~i2c_busy)
64
+ begin
65
+ i2c_enable <= 'd1;
66
+ scount <= scount + 1'd1;
67
+ end
68
+ 2:
69
+ // once busy set enable low
70
+ if(i2c_busy)
71
+ begin
72
+ i2c_enable <= 'd0;
73
+ scount <= scount + 1'd1;
74
+ end
75
+ 3:
76
+ // if master is not busy start next write
77
+ if(~i2c_busy)
78
+ begin
79
+ if(regindex < numregsactual)
80
+ begin
81
+ scount <= 'd0;
82
+ regindex <= regindex + 1'd1;
83
+ end
84
+ else
85
+ tlv320_init_done <= 1'd1;
86
+ end
87
+ endcase
88
+ end
89
+
90
+ endmodule
ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/uart/fixed_point_divider/fixed_point_divider.v ADDED
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+ //
2
+ //Written by GowinSynthesis
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+ //Product Version "GowinSynthesis V1.9.7.02Beta"
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+ //Mon May 10 08:46:21 2021
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+
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+ //Source file index table:
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+ //file0 "\C:/Gowin/Gowin_V1.9.7.02Beta/IDE/ipcore/DIVIDER/data/div_wrap.v"
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+ //file1 "\C:/Gowin/Gowin_V1.9.7.02Beta/IDE/ipcore/DIVIDER/data/qdiv.v"
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+ `timescale 100 ps/100 ps
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+
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+ `pragma protect encoding=(enctype="base64", line_length=76, bytes=256)
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+ wu4=
999
+ `pragma protect end_protected
1000
+ module Fixed_Point_Divider_Top (
1001
+ dividend,
1002
+ divisor,
1003
+ start,
1004
+ clk,
1005
+ quotient_out,
1006
+ complete
1007
+ )
1008
+ ;
1009
+ input [31:0] dividend;
1010
+ input [31:0] divisor;
1011
+ input start;
1012
+ input clk;
1013
+ output [31:0] quotient_out;
1014
+ output complete;
1015
+ wire VCC;
1016
+ wire GND;
1017
+ \~qdiv.Fixed_Point_Divider_Top u_fra_div (
1018
+ .clk(clk),
1019
+ .start(start),
1020
+ .dividend(dividend[31:0]),
1021
+ .divisor(divisor[31:0]),
1022
+ .complete(complete),
1023
+ .quotient_out(quotient_out[31:0])
1024
+ );
1025
+ VCC VCC_cZ (
1026
+ .V(VCC)
1027
+ );
1028
+ GND GND_cZ (
1029
+ .G(GND)
1030
+ );
1031
+ GSR GSR (
1032
+ .GSRI(VCC)
1033
+ );
1034
+ endmodule /* Fixed_Point_Divider_Top */
ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/uart/uart.v ADDED
@@ -0,0 +1,142 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ //
2
+ // File name :uart.v
3
+ // Module name :uart.v
4
+ // Created by :GaoYun Semi
5
+ // Author :(Winson)
6
+ // Created On :2020-11-05 14:26 GuangZhou
7
+ // Last Modified :
8
+ // Update Count :2020-11-05 14:26
9
+ // Description :
10
+ //----------------------------------------------------------------------
11
+ //===========================================
12
+ module UART2
13
+ #( parameter CLK_FREQ = 30'd60000000 // set system clock frequency in Hz
14
+ //parameter BAUD_RATE = 4000000 // baud rate value
15
+ // parameter P_PARITY_BIT = "none" // legal values: "none", "even", "odd", "mark", "space"
16
+ )
17
+ (
18
+ input CLK , // clock
19
+ input RST , // reset
20
+ // UART INTERFACE
21
+ output UART_TXD ,
22
+ input UART_RXD ,
23
+ output UART_RTS , // when UART_RTS = 0, UART This Device Ready to receive.
24
+ input UART_CTS , // when UART_CTS = 0, UART Opposite Device Ready to receive.
25
+ // UART Control Reg
26
+ input [31:0] BAUD_RATE ,
27
+ input [7:0] PARITY_BIT,
28
+ input [7:0] STOP_BIT ,
29
+ input [7:0] DATA_BITS ,
30
+ // USER DATA INPUT INTERFACE
31
+ input [15:0] TX_DATA , //
32
+ input TX_DATA_VAL, // when TX_DATA_VAL = 1, data on TX_DATA will be transmit, DATA_SEND can set to 1 only when BUSY = 0
33
+ output TX_BUSY , // when BUSY = 1 transiever is busy, you must not set DATA_SEND to 1
34
+ // USER FIFO CONTROL INTERFACE
35
+ output [15:0] RX_DATA , //
36
+ output RX_DATA_VAL //
37
+ );
38
+
39
+
40
+ reg [3:0] uart_rxd_shreg ;
41
+ reg uart_rxd_debounced ;
42
+ reg [3:0] uart_cts_shreg ;
43
+ reg uart_cts_debounced ;
44
+ wire uart_tx_busy ;
45
+ wire [31:0]div_out ;
46
+ wire div_cmpl;
47
+ wire [1:0] div_correct = 'd3;
48
+
49
+ wire [23:0] divider_value = 'd72;// = CLK_FREQ/(15*BAUD_RATE);
50
+ // -------------------------------------------------------------------------
51
+ // UART DIVIDER VALUE
52
+ // -------------------------------------------------------------------------
53
+ //always @(posedge CLK or posedge RST) begin
54
+ // if (RST) begin
55
+ // divider_value <= 24'd0;
56
+ // end
57
+ // else begin
58
+ // //divider_value <= CLK_FREQ/(15*BAUD_RATE);
59
+ // divider_value <= CLK_FREQ/(BAUD_RATE);
60
+ // end
61
+ //end
62
+ // -------------------------------------------------------------------------
63
+ // UART RXD DEBAUNCER
64
+ // -------------------------------------------------------------------------
65
+ always @(posedge CLK or posedge RST) begin
66
+ if (RST) begin
67
+ uart_rxd_shreg <= 4'hF;
68
+ uart_rxd_debounced <= 1'b1;
69
+ end
70
+ else begin
71
+ uart_rxd_shreg <= {UART_RXD, uart_rxd_shreg[3:1]};
72
+ uart_rxd_debounced <= uart_rxd_shreg[0]|uart_rxd_shreg[1]|uart_rxd_shreg[2]|uart_rxd_shreg[3];
73
+ end
74
+ end
75
+
76
+ always @(posedge CLK or posedge RST) begin
77
+ if (RST) begin
78
+ uart_cts_shreg <= 4'hF;
79
+ uart_cts_debounced <= 1'b1;
80
+ end
81
+ else begin
82
+ uart_cts_shreg <= {UART_CTS, uart_cts_shreg[3:1]};
83
+ uart_cts_debounced <= uart_cts_shreg[0]|uart_cts_shreg[1]|uart_cts_shreg[2]|uart_cts_shreg[3];
84
+ end
85
+ end
86
+
87
+ assign UART_RTS = 1'b0;
88
+ assign TX_BUSY = uart_tx_busy | UART_CTS;
89
+
90
+ // -------------------------------------------------------------------------
91
+ // UART TRANSMITTER
92
+ // -------------------------------------------------------------------------
93
+ UART_TX
94
+ //#( .P_PARITY_BIT (P_PARITY_BIT))
95
+ uart_tx_inst (
96
+ .CLK (CLK )
97
+ ,.RST (RST )
98
+ // UART INTERFACE
99
+ //,.UART_CLK_EN (uart_clk_en )
100
+ ,.UART_TXD (UART_TXD )
101
+ // UART PARAMETER
102
+ //,.UART_PARITY_BIT (UART_PARITY_BIT )
103
+ //,.UART_DATA_BIT (UART_DATA_BIT )
104
+ ,.PARITY_BIT (PARITY_BIT)
105
+ ,.STOP_BIT (STOP_BIT )//0: 1 stop bit 1: 1.5 stop bit 2: 2 stop bit
106
+ ,.DATA_BITS (DATA_BITS )//5 6 7 8 16
107
+ ,.DIVIDER_VALUE(divider_value )//16'd37
108
+ ,.DIV_CORRECT(div_correct )//16'd37
109
+
110
+ // USER DATA INPUT INTERFACE
111
+ ,.DATA_IN (TX_DATA )
112
+ ,.DATA_SEND (TX_DATA_VAL )
113
+ ,.BUSY (uart_tx_busy)
114
+ );
115
+
116
+ // -------------------------------------------------------------------------
117
+ // UART RECEIVER
118
+ // -------------------------------------------------------------------------
119
+ UART_RX
120
+ #( .P_PARITY_BIT ("odd"))
121
+ uart_rx_inst (
122
+ .CLK (CLK )
123
+ ,.RST (RST )
124
+ // UART INTERFACE
125
+ //,.UART_CLK_EN (uart_clk_en )
126
+ ,.UART_RXD (uart_rxd_debounced )
127
+ // UART PARAMETER
128
+ //,.UART_PARITY_BIT (UART_PARITY_BIT )
129
+ //,.UART_DATA_BIT (UART_DATA_BIT )
130
+ ,.PARITY_BIT (PARITY_BIT )
131
+ ,.STOP_BIT (STOP_BIT )//0: 1 stop bit 1: 1.5 stop bit 2: 2 stop bit
132
+ ,.DATA_BITS (DATA_BITS )//5 6 7 8 16
133
+ ,.DIVIDER_VALUE(divider_value)//
134
+ ,.DIV_CORRECT(div_correct )//16'd37
135
+ // USER DATA INPUT INTERFACE
136
+ ,.DATA_OUT (RX_DATA )
137
+ ,.DATA_VLD (RX_DATA_VAL)
138
+ ,.FRAME_ERROR ( )
139
+ );
140
+
141
+
142
+ endmodule
ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/uart/uart_rx.vhd ADDED
@@ -0,0 +1,497 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ --------------------------------------------------------------------------------
2
+ -- PROJECT: SIMPLE UART FOR FPGA
3
+ --------------------------------------------------------------------------------
4
+ -- MODULE: UART RECEIVER
5
+ -- AUTHORS: Jakub Cabal <jakubcabal@gmail.com>
6
+ -- lICENSE: The MIT License (MIT)
7
+ -- WEBSITE: https://github.com/jakubcabal/uart_for_fpga
8
+ --------------------------------------------------------------------------------
9
+
10
+ library IEEE;
11
+ use IEEE.STD_LOGIC_1164.ALL;
12
+ use IEEE.NUMERIC_STD.ALL;
13
+
14
+ entity UART_RX is
15
+ Generic (
16
+ P_PARITY_BIT : string := "none" -- legal values: "none", "even", "odd", "mark", "space"
17
+ );
18
+ Port (
19
+ CLK : in std_logic; -- system clock
20
+ RST : in std_logic; -- high active synchronous reset
21
+ -- UART INTERFACE
22
+ --UART_CLK_EN : in std_logic; -- oversampling (15x) UART clock enable
23
+ UART_RXD : in std_logic;
24
+ -- UART PARAMETER
25
+ PARITY_BIT : in std_logic_vector(7 downto 0);
26
+ STOP_BIT : in std_logic_vector(7 downto 0);
27
+ DATA_BITS : in std_logic_vector(7 downto 0);
28
+ DIVIDER_VALUE : in std_logic_vector(23 downto 0);
29
+ DIV_CORRECT : in std_logic_vector(1 downto 0);
30
+ -- USER DATA OUTPUT INTERFACE
31
+ DATA_OUT : out std_logic_vector(15 downto 0);
32
+ DATA_VLD : out std_logic; -- when DATA_VLD = 1, data on DATA_OUT are valid
33
+ FRAME_ERROR : out std_logic -- when FRAME_ERROR = 1, stop bit was invalid, current and next data may be invalid
34
+ );
35
+ end UART_RX;
36
+
37
+ architecture FULL of UART_RX is
38
+
39
+ signal rx_clk_en : std_logic;
40
+ signal rx_hf_clk_en : std_logic;
41
+ signal rx_ticks : unsigned(23 downto 0);
42
+ signal rx_clk_divider_en : std_logic;
43
+ signal rx_data : std_logic_vector(15 downto 0);
44
+ signal parity_bit_reg : std_logic_vector(7 downto 0);
45
+ signal stop_bit_reg : std_logic_vector(7 downto 0);
46
+ signal data_bits_reg : std_logic_vector(7 downto 0);
47
+ signal divider_value_reg : std_logic_vector(23 downto 0);
48
+ signal div_correct_reg : std_logic_vector(1 downto 0);
49
+ signal rx_bit_count : unsigned(3 downto 0);
50
+ signal rx_bit_count_en : std_logic;
51
+ signal rx_data_shreg_en : std_logic;
52
+ signal rx_parity_bit : std_logic;
53
+ signal rx_parity_error : std_logic;
54
+ signal parity_temp : std_logic;
55
+ signal rx_parity_check_en : std_logic;
56
+ signal rx_output_reg_en : std_logic;
57
+ signal rx_busy : std_logic;
58
+ signal uart_ticks : unsigned(15 downto 0);
59
+ signal uart_clk_en : std_logic;
60
+
61
+ type state is (idle, startbit, databits, paritybit, stopbit, stopbit15, stopbit2);
62
+ signal rx_pstate : state;
63
+ signal rx_nstate : state;
64
+
65
+ begin
66
+
67
+ -- -------------------------------------------------------------------------
68
+ -- UART RECEIVER CLOCK DIVIDER
69
+ -- -------------------------------------------------------------------------
70
+
71
+ uart_rx_sample_clk : process (CLK)
72
+ begin
73
+ if (rising_edge(CLK)) then
74
+ if (RST = '1') then
75
+ uart_ticks <= (others => '0');
76
+ uart_clk_en <= '0';
77
+ else
78
+ if (uart_ticks = (unsigned(divider_value_reg) - 1)) then
79
+ uart_ticks <= (others => '0');
80
+ uart_clk_en <= '1';
81
+ else
82
+ uart_ticks <= uart_ticks + 1;
83
+ uart_clk_en <= '0';
84
+ end if;
85
+ end if;
86
+ end if;
87
+ end process;
88
+
89
+ uart_rx_clk_divider : process (CLK)
90
+ begin
91
+ if (rising_edge(CLK)) then
92
+ if (rx_clk_divider_en = '1') then
93
+ --if (uart_clk_en = '1') then
94
+ --if (rx_ticks = "1110") then
95
+ if ((rx_bit_count(1 downto 0) = "01") AND (div_correct_reg(1 downto 1) = "1")) then
96
+ if (rx_ticks = (unsigned(divider_value_reg))) then
97
+ rx_ticks <= (others => '0');
98
+ rx_clk_en <= '0';
99
+ rx_hf_clk_en <= '1';
100
+ --elsif (rx_ticks = "0111") then
101
+ elsif (rx_ticks = (unsigned(divider_value_reg) srl 1)) then
102
+ rx_ticks <= rx_ticks + 1;
103
+ rx_clk_en <= '1';
104
+ rx_hf_clk_en <= '1';
105
+ else
106
+ rx_ticks <= rx_ticks + 1;
107
+ rx_clk_en <= '0';
108
+ rx_hf_clk_en <= '0';
109
+ end if;
110
+ elsif ((rx_bit_count(1 downto 0) = "10") AND (div_correct_reg(1 downto 0) = "11")) then
111
+ if (rx_ticks = (unsigned(divider_value_reg))) then
112
+ rx_ticks <= (others => '0');
113
+ rx_clk_en <= '0';
114
+ rx_hf_clk_en <= '1';
115
+ --elsif (rx_ticks = "0111") then
116
+ elsif (rx_ticks = (unsigned(divider_value_reg) srl 1)) then
117
+ rx_ticks <= rx_ticks + 1;
118
+ rx_clk_en <= '1';
119
+ rx_hf_clk_en <= '1';
120
+ else
121
+ rx_ticks <= rx_ticks + 1;
122
+ rx_clk_en <= '0';
123
+ rx_hf_clk_en <= '0';
124
+ end if;
125
+ elsif ((rx_bit_count(1 downto 0) = "11") AND (div_correct_reg(1 downto 0) /= "00")) then
126
+ if (rx_ticks = (unsigned(divider_value_reg))) then
127
+ rx_ticks <= (others => '0');
128
+ rx_clk_en <= '0';
129
+ rx_hf_clk_en <= '1';
130
+ --elsif (rx_ticks = "0111") then
131
+ elsif (rx_ticks = (unsigned(divider_value_reg) srl 1)) then
132
+ rx_ticks <= rx_ticks + 1;
133
+ rx_clk_en <= '1';
134
+ rx_hf_clk_en <= '1';
135
+ else
136
+ rx_ticks <= rx_ticks + 1;
137
+ rx_clk_en <= '0';
138
+ rx_hf_clk_en <= '0';
139
+ end if;
140
+ else
141
+ if (rx_ticks = (unsigned(divider_value_reg) - 1)) then
142
+ rx_ticks <= (others => '0');
143
+ rx_clk_en <= '0';
144
+ rx_hf_clk_en <= '1';
145
+ --elsif (rx_ticks = "0111") then
146
+ elsif (rx_ticks = (unsigned(divider_value_reg) srl 1)) then
147
+ rx_ticks <= rx_ticks + 1;
148
+ rx_clk_en <= '1';
149
+ rx_hf_clk_en <= '1';
150
+ else
151
+ rx_ticks <= rx_ticks + 1;
152
+ rx_clk_en <= '0';
153
+ rx_hf_clk_en <= '0';
154
+ end if;
155
+ end if;
156
+ --else
157
+ -- rx_ticks <= rx_ticks;
158
+ -- rx_clk_en <= '0';
159
+ -- rx_hf_clk_en <= '0';
160
+ --end if;
161
+ else
162
+ rx_ticks <= (others => '0');
163
+ rx_clk_en <= '0';
164
+ rx_hf_clk_en <= '0';
165
+ end if;
166
+ end if;
167
+ end process;
168
+
169
+ -- -------------------------------------------------------------------------
170
+ -- UART RECEIVER BIT COUNTER
171
+ -- -------------------------------------------------------------------------
172
+
173
+ uart_rx_bit_counter : process (CLK)
174
+ begin
175
+ if (rising_edge(CLK)) then
176
+ if (RST = '1') then
177
+ rx_bit_count <= (others => '0');
178
+ elsif (rx_bit_count_en = '1' AND rx_clk_en = '1') then
179
+ if (rx_bit_count = "1111") then
180
+ rx_bit_count <= (others => '0');
181
+ else
182
+ rx_bit_count <= rx_bit_count + 1;
183
+ end if;
184
+ elsif (rx_bit_count_en = '0') then
185
+ rx_bit_count <= (others => '0');
186
+ end if;
187
+ end if;
188
+ end process;
189
+
190
+ -- -------------------------------------------------------------------------
191
+ -- UART RECEIVER DATA SHIFT REGISTER
192
+ -- -------------------------------------------------------------------------
193
+
194
+ uart_rx_data_shift_reg : process (CLK)
195
+ begin
196
+ if (rising_edge(CLK)) then
197
+ if (RST = '1') then
198
+ rx_data <= (others => '0');
199
+ elsif (rx_clk_en = '1' AND rx_data_shreg_en = '1') then
200
+ if (data_bits_reg = "00000101") then
201
+ rx_data <= "00000000000" & UART_RXD & rx_data(4 downto 1);
202
+ elsif (data_bits_reg = "00000110") then
203
+ rx_data <= "0000000000" & UART_RXD & rx_data(5 downto 1);
204
+ elsif (data_bits_reg = "00000111") then
205
+ rx_data <= "000000000" & UART_RXD & rx_data(6 downto 1);
206
+ elsif (data_bits_reg = "00001000") then
207
+ rx_data <= "00000000" & UART_RXD & rx_data(7 downto 1);
208
+ else
209
+ rx_data <= UART_RXD & rx_data(15 downto 1);
210
+ end if;
211
+ end if;
212
+ end if;
213
+ end process;
214
+
215
+ DATA_OUT <= rx_data;
216
+
217
+ uart_rx_ctrl_reg : process (CLK)
218
+ begin
219
+ if (rising_edge(CLK)) then
220
+ if (RST = '1') then
221
+ parity_bit_reg <= (others => '0');
222
+ stop_bit_reg <= (others => '0');
223
+ data_bits_reg <= (others => '0');
224
+ divider_value_reg <= (others => '0');
225
+ div_correct_reg <= "00";
226
+ elsif (rx_busy = '0') then
227
+ parity_bit_reg <= PARITY_BIT;
228
+ stop_bit_reg <= STOP_BIT;
229
+ data_bits_reg <= DATA_BITS;
230
+ divider_value_reg <= DIVIDER_VALUE;
231
+ div_correct_reg <= DIV_CORRECT;
232
+ --divider_value_reg <= "00100000";
233
+ end if;
234
+ end if;
235
+ end process;
236
+ -- -------------------------------------------------------------------------
237
+ -- UART RECEIVER PARITY GENERATOR AND CHECK
238
+ -- -------------------------------------------------------------------------
239
+
240
+ --uart_rx_parity_g : if (P_PARITY_BIT /= "none") generate
241
+ -- uart_rx_parity_gen_i: entity work.UART_PARITY
242
+ -- generic map (
243
+ -- DATA_WIDTH => 8,
244
+ -- PARITY_TYPE => P_PARITY_BIT
245
+ -- )
246
+ -- port map (
247
+ -- DATA_IN => rx_data,
248
+ -- PARITY_OUT => rx_parity_bit
249
+ -- );
250
+ --end generate;
251
+
252
+ parity_gen : process (CLK)
253
+ begin
254
+ if (rising_edge(CLK)) then
255
+ if (RST = '1') then
256
+ parity_temp <= '0';
257
+ elsif (parity_bit_reg = "00000000") then --none
258
+ parity_temp <= '0';
259
+ elsif (parity_bit_reg = "00000001") then --odd
260
+ if (rx_pstate = startbit) then
261
+ parity_temp <= '1';
262
+ elsif (rx_bit_count_en = '1' AND rx_clk_en = '1') then
263
+ parity_temp <= parity_temp XOR UART_RXD;
264
+ end if;
265
+ elsif (parity_bit_reg = "00000010") then --even
266
+ if (rx_pstate = startbit) then
267
+ parity_temp <= '0';
268
+ elsif (rx_bit_count_en = '1' AND rx_clk_en = '1') then
269
+ parity_temp <= parity_temp XOR UART_RXD;
270
+ end if;
271
+ elsif (parity_bit_reg = "00000011") then --mark
272
+ parity_temp <= '1';
273
+ elsif (parity_bit_reg = "00000100") then --space
274
+ parity_temp <= '0';
275
+ end if;
276
+ end if;
277
+ end process;
278
+
279
+ uart_rx_parity_check_reg : process (CLK)
280
+ begin
281
+ if (rising_edge(CLK)) then
282
+ if (RST = '1') then
283
+ rx_parity_error <= '0';
284
+ elsif (rx_parity_check_en = '1') then
285
+ --rx_parity_error <= rx_parity_bit XOR UART_RXD;
286
+ if (parity_bit_reg = "00000000") then
287
+ rx_parity_error <= '0';
288
+ else
289
+ rx_parity_error <= parity_temp XOR UART_RXD;
290
+ end if;
291
+ end if;
292
+ end if;
293
+ end process;
294
+
295
+ --uart_rx_noparity_g : if (PARITY_BIT = "none") generate
296
+ -- rx_parity_error <= '0';
297
+ --end generate;
298
+
299
+ -- -------------------------------------------------------------------------
300
+ -- UART RECEIVER OUTPUT REGISTER
301
+ -- -------------------------------------------------------------------------
302
+
303
+ uart_rx_output_reg : process (CLK)
304
+ begin
305
+ if (rising_edge(CLK)) then
306
+ if (RST = '1') then
307
+ DATA_VLD <= '0';
308
+ FRAME_ERROR <= '0';
309
+ else
310
+ if (rx_output_reg_en = '1') then
311
+ DATA_VLD <= NOT rx_parity_error AND UART_RXD;
312
+ FRAME_ERROR <= NOT UART_RXD;
313
+ else
314
+ DATA_VLD <= '0';
315
+ FRAME_ERROR <= '0';
316
+ end if;
317
+ end if;
318
+ end if;
319
+ end process;
320
+
321
+ -- -------------------------------------------------------------------------
322
+ -- UART RECEIVER FSM
323
+ -- -------------------------------------------------------------------------
324
+
325
+ -- PRESENT STATE REGISTER
326
+ process (CLK)
327
+ begin
328
+ if (rising_edge(CLK)) then
329
+ if (RST = '1') then
330
+ rx_pstate <= idle;
331
+ else
332
+ rx_pstate <= rx_nstate;
333
+ end if;
334
+ end if;
335
+ end process;
336
+
337
+ -- NEXT STATE AND OUTPUTS LOGIC
338
+ process (rx_pstate, UART_RXD, rx_hf_clk_en, rx_clk_en, rx_bit_count, data_bits_reg, parity_bit_reg, stop_bit_reg)
339
+ begin
340
+ case rx_pstate is
341
+
342
+ when idle =>
343
+ rx_output_reg_en <= '0';
344
+ rx_bit_count_en <= '0';
345
+ rx_data_shreg_en <= '0';
346
+ rx_clk_divider_en <= '0';
347
+ rx_parity_check_en <= '0';
348
+ rx_busy <= '0';
349
+ if (UART_RXD = '0') then
350
+ rx_nstate <= startbit;
351
+ else
352
+ rx_nstate <= idle;
353
+ end if;
354
+
355
+ when startbit =>
356
+ rx_output_reg_en <= '0';
357
+ rx_bit_count_en <= '0';
358
+ rx_data_shreg_en <= '0';
359
+ rx_clk_divider_en <= '1';
360
+ rx_parity_check_en <= '0';
361
+ rx_busy <= '1';
362
+
363
+ if (rx_clk_en = '1') then
364
+ rx_nstate <= databits;
365
+ else
366
+ rx_nstate <= startbit;
367
+ end if;
368
+
369
+ when databits =>
370
+ rx_output_reg_en <= '0';
371
+ rx_bit_count_en <= '1';
372
+ rx_data_shreg_en <= '1';
373
+ rx_clk_divider_en <= '1';
374
+ rx_parity_check_en <= '0';
375
+ rx_busy <= '1';
376
+
377
+ --if ((rx_clk_en = '1') AND (rx_bit_count = "111")) then
378
+ if (rx_clk_en = '1') then
379
+ if ((data_bits_reg = "00000101") AND (rx_bit_count = "0100")) then --data bit 5
380
+ if (parity_bit_reg = "00000000") then
381
+ rx_nstate <= stopbit;
382
+ else
383
+ rx_nstate <= paritybit;
384
+ end if ;
385
+ elsif ((data_bits_reg = "00000110") AND (rx_bit_count = "0101")) then --data bit 6
386
+ if (parity_bit_reg = "00000000") then
387
+ rx_nstate <= stopbit;
388
+ else
389
+ rx_nstate <= paritybit;
390
+ end if ;
391
+ elsif ((data_bits_reg = "00000111") AND (rx_bit_count = "0110")) then --data bit 7
392
+ if (parity_bit_reg = "00000000") then
393
+ rx_nstate <= stopbit;
394
+ else
395
+ rx_nstate <= paritybit;
396
+ end if ;
397
+ elsif ((data_bits_reg = "00001000") AND (rx_bit_count = "0111")) then --data bit 8
398
+ if (parity_bit_reg = "00000000") then
399
+ rx_nstate <= stopbit;
400
+ else
401
+ rx_nstate <= paritybit;
402
+ end if ;
403
+ elsif ((data_bits_reg = "00010000") AND (rx_bit_count = "1111")) then --data bit 16
404
+ if (parity_bit_reg = "00000000") then
405
+ rx_nstate <= stopbit;
406
+ else
407
+ rx_nstate <= paritybit;
408
+ end if ;
409
+ else
410
+ rx_nstate <= databits;
411
+ end if;
412
+ else
413
+ rx_nstate <= databits;
414
+ end if;
415
+
416
+ when paritybit =>
417
+ rx_output_reg_en <= '0';
418
+ rx_bit_count_en <= '0';
419
+ rx_data_shreg_en <= '0';
420
+ rx_clk_divider_en <= '1';
421
+ rx_parity_check_en <= '1';
422
+ rx_busy <= '1';
423
+
424
+ if (rx_clk_en = '1') then
425
+ rx_nstate <= stopbit;
426
+ else
427
+ rx_nstate <= paritybit;
428
+ end if;
429
+
430
+ when stopbit =>
431
+ rx_bit_count_en <= '0';
432
+ rx_data_shreg_en <= '0';
433
+ rx_clk_divider_en <= '1';
434
+ rx_parity_check_en <= '0';
435
+ rx_busy <= '1';
436
+
437
+ if (rx_clk_en = '1') then
438
+ if (stop_bit_reg = "00000000") then --Stop bit 1
439
+ rx_nstate <= idle;
440
+ rx_output_reg_en <= '1';
441
+ elsif (stop_bit_reg = "00000001") then --Stop bit 1.5
442
+ rx_nstate <= stopbit15;
443
+ rx_output_reg_en <= '0';
444
+ elsif (stop_bit_reg = "00000010") then --Stop bit 2
445
+ rx_nstate <= stopbit2;
446
+ rx_output_reg_en <= '0';
447
+ else
448
+ rx_nstate <= idle;
449
+ rx_output_reg_en <= '1';
450
+ end if;
451
+ else
452
+ rx_nstate <= stopbit;
453
+ rx_output_reg_en <= '0';
454
+ end if;
455
+
456
+ when stopbit15 =>
457
+ rx_bit_count_en <= '0';
458
+ rx_data_shreg_en <= '0';
459
+ rx_clk_divider_en <= '1';
460
+ rx_parity_check_en <= '0';
461
+ rx_busy <= '1';
462
+
463
+ if (rx_hf_clk_en = '1') then
464
+ rx_nstate <= idle;
465
+ rx_output_reg_en <= '1';
466
+ else
467
+ rx_nstate <= stopbit15;
468
+ rx_output_reg_en <= '0';
469
+ end if;
470
+
471
+ when stopbit2 =>
472
+ rx_bit_count_en <= '0';
473
+ rx_data_shreg_en <= '0';
474
+ rx_clk_divider_en <= '1';
475
+ rx_parity_check_en <= '0';
476
+ rx_busy <= '1';
477
+
478
+ if (rx_clk_en = '1') then
479
+ rx_nstate <= idle;
480
+ rx_output_reg_en <= '1';
481
+ else
482
+ rx_nstate <= stopbit2;
483
+ rx_output_reg_en <= '0';
484
+ end if;
485
+
486
+ when others =>
487
+ rx_output_reg_en <= '0';
488
+ rx_bit_count_en <= '0';
489
+ rx_data_shreg_en <= '0';
490
+ rx_clk_divider_en <= '0';
491
+ rx_parity_check_en <= '0';
492
+ rx_nstate <= idle;
493
+
494
+ end case;
495
+ end process;
496
+
497
+ end FULL;
ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/uart/uart_tx.vhd ADDED
@@ -0,0 +1,518 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ --------------------------------------------------------------------------------
2
+ -- PROJECT: SIMPLE UART FOR FPGA
3
+ --------------------------------------------------------------------------------
4
+ -- MODULE: UART TRANSMITTER
5
+ -- AUTHORS: Jakub Cabal <jakubcabal@gmail.com>
6
+ -- lICENSE: The MIT License (MIT)
7
+ -- WEBSITE: https://github.com/jakubcabal/uart_for_fpga
8
+ --------------------------------------------------------------------------------
9
+
10
+ library IEEE;
11
+ use IEEE.STD_LOGIC_1164.ALL;
12
+ use IEEE.NUMERIC_STD.ALL;
13
+
14
+ entity UART_TX is
15
+ --Generic (
16
+ --PARITY_BIT : string := "none" -- legal values: "none", "even", "odd", "mark", "space"
17
+ --);
18
+ Port (
19
+ CLK : in std_logic; -- system clock
20
+ RST : in std_logic; -- high active synchronous reset
21
+ -- UART INTERFACE
22
+ --UART_CLK_EN : in std_logic; -- oversampling (15x) UART clock enable
23
+ UART_TXD : out std_logic;
24
+ -- UART PARAMETER
25
+ PARITY_BIT : in std_logic_vector(7 downto 0);
26
+ STOP_BIT : in std_logic_vector(7 downto 0);
27
+ DATA_BITS : in std_logic_vector(7 downto 0);
28
+ DIVIDER_VALUE : in std_logic_vector(23 downto 0);
29
+ DIV_CORRECT : in std_logic_vector(1 downto 0);
30
+ -- USER DATA INPUT INTERFACE
31
+ DATA_IN : in std_logic_vector(15 downto 0);
32
+ DATA_SEND : in std_logic; -- when DATA_SEND = 1, data on DATA_IN will be transmit, DATA_SEND can set to 1 only when BUSY = 0
33
+ BUSY : out std_logic -- when BUSY = 1 transiever is busy, you must not set DATA_SEND to 1
34
+ );
35
+ end UART_TX;
36
+
37
+ architecture FULL of UART_TX is
38
+
39
+ signal tx_clk_en : std_logic;
40
+ signal tx_hf_clk_en : std_logic;
41
+ signal tx_clk_divider_en : std_logic;
42
+ signal tx_ticks : unsigned(23 downto 0);
43
+ signal tx_data : std_logic_vector(15 downto 0);
44
+ signal parity_bit_reg : std_logic_vector(7 downto 0);
45
+ signal stop_bit_reg : std_logic_vector(7 downto 0);
46
+ signal data_bits_reg : std_logic_vector(7 downto 0);
47
+ signal divider_value_reg : std_logic_vector(23 downto 0);
48
+ signal div_correct_reg : std_logic_vector(1 downto 0);
49
+ signal tx_bit_count : unsigned(3 downto 0);
50
+ signal tx_bit_count_en : std_logic;
51
+ signal tx_busy : std_logic;
52
+ signal tx_parity_bit : std_logic;
53
+ signal parity_temp : std_logic;
54
+ signal tx_data_out_sel : std_logic_vector(1 downto 0);
55
+ signal uart_ticks : unsigned(15 downto 0);
56
+ signal uart_clk_en : std_logic;
57
+
58
+ type state is (idle, txsync, startbit, databits, paritybit, stopbit, stopbit15, stopbit2);
59
+ signal tx_pstate : state;
60
+ signal tx_nstate : state;
61
+
62
+ begin
63
+
64
+ BUSY <= tx_busy OR DATA_SEND;
65
+
66
+ -- -------------------------------------------------------------------------
67
+ -- UART TRANSMITTER CLOCK DIVIDER
68
+ -- -------------------------------------------------------------------------
69
+
70
+ uart_tx_sample_clk : process (CLK)
71
+ begin
72
+ if (rising_edge(CLK)) then
73
+ if (RST = '1') then
74
+ uart_ticks <= (others => '0');
75
+ uart_clk_en <= '0';
76
+ else
77
+ if (uart_ticks = (unsigned(divider_value_reg) - 1)) then
78
+ uart_ticks <= (others => '0');
79
+ uart_clk_en <= '1';
80
+ else
81
+ uart_ticks <= uart_ticks + 1;
82
+ uart_clk_en <= '0';
83
+ end if;
84
+ end if;
85
+ end if;
86
+ end process;
87
+
88
+ uart_tx_clk_divider : process (CLK)
89
+ begin
90
+ if (rising_edge(CLK)) then
91
+ if (tx_clk_divider_en = '1') then
92
+ --if (uart_clk_en = '1') thediv
93
+ --if (tx_ticks = "1110") then
94
+ if ((tx_bit_count(1 downto 0) = "01") AND (div_correct_reg(1 downto 1) = "1")) then
95
+ if (tx_ticks = (unsigned(divider_value_reg))) then
96
+ tx_ticks <= (others => '0');
97
+ tx_clk_en <= '0';
98
+ tx_hf_clk_en <= '0';
99
+ --elsif (tx_ticks = "0001") then
100
+ elsif (tx_ticks = "000000000000000000000001") then
101
+ tx_ticks <= tx_ticks + 1;
102
+ tx_clk_en <= '1';
103
+ tx_hf_clk_en <= '1';
104
+ --elsif (tx_ticks = "1001") then
105
+ elsif (tx_ticks = (unsigned(divider_value_reg) srl 1) + 1) then
106
+ tx_ticks <= tx_ticks + 1;
107
+ tx_clk_en <= '0';
108
+ tx_hf_clk_en <= '1';
109
+ else
110
+ tx_ticks <= tx_ticks + 1;
111
+ tx_clk_en <= '0';
112
+ tx_hf_clk_en <= '0';
113
+ end if;
114
+ elsif ((tx_bit_count(1 downto 0) = "10") AND (div_correct_reg(1 downto 0) = "11")) then
115
+ if (tx_ticks = (unsigned(divider_value_reg))) then
116
+ tx_ticks <= (others => '0');
117
+ tx_clk_en <= '0';
118
+ tx_hf_clk_en <= '0';
119
+ --elsif (tx_ticks = "0001") then
120
+ elsif (tx_ticks = "000000000000000000000001") then
121
+ tx_ticks <= tx_ticks + 1;
122
+ tx_clk_en <= '1';
123
+ tx_hf_clk_en <= '1';
124
+ --elsif (tx_ticks = "1001") then
125
+ elsif (tx_ticks = (unsigned(divider_value_reg) srl 1) + 1) then
126
+ tx_ticks <= tx_ticks + 1;
127
+ tx_clk_en <= '0';
128
+ tx_hf_clk_en <= '1';
129
+ else
130
+ tx_ticks <= tx_ticks + 1;
131
+ tx_clk_en <= '0';
132
+ tx_hf_clk_en <= '0';
133
+ end if;
134
+ elsif ((tx_bit_count(1 downto 0) = "11") AND (div_correct_reg(1 downto 0) /= "00")) then
135
+ if (tx_ticks = (unsigned(divider_value_reg))) then
136
+ tx_ticks <= (others => '0');
137
+ tx_clk_en <= '0';
138
+ tx_hf_clk_en <= '0';
139
+ --elsif (tx_ticks = "0001") then
140
+ elsif (tx_ticks = "000000000000000000000001") then
141
+ tx_ticks <= tx_ticks + 1;
142
+ tx_clk_en <= '1';
143
+ tx_hf_clk_en <= '1';
144
+ --elsif (tx_ticks = "1001") then
145
+ elsif (tx_ticks = (unsigned(divider_value_reg) srl 1) + 1) then
146
+ tx_ticks <= tx_ticks + 1;
147
+ tx_clk_en <= '0';
148
+ tx_hf_clk_en <= '1';
149
+ else
150
+ tx_ticks <= tx_ticks + 1;
151
+ tx_clk_en <= '0';
152
+ tx_hf_clk_en <= '0';
153
+ end if;
154
+ else
155
+ if (tx_ticks = (unsigned(divider_value_reg) - 1)) then
156
+ tx_ticks <= (others => '0');
157
+ tx_clk_en <= '0';
158
+ tx_hf_clk_en <= '0';
159
+ --elsif (tx_ticks = "0001") then
160
+ elsif (tx_ticks = "000000000000000000000001") then
161
+ tx_ticks <= tx_ticks + 1;
162
+ tx_clk_en <= '1';
163
+ tx_hf_clk_en <= '1';
164
+ --elsif (tx_ticks = "1001") then
165
+ elsif (tx_ticks = (unsigned(divider_value_reg) srl 1) + 1) then
166
+ tx_ticks <= tx_ticks + 1;
167
+ tx_clk_en <= '0';
168
+ tx_hf_clk_en <= '1';
169
+ else
170
+ tx_ticks <= tx_ticks + 1;
171
+ tx_clk_en <= '0';
172
+ tx_hf_clk_en <= '0';
173
+ end if;
174
+ end if;
175
+ --else
176
+ -- tx_ticks <= tx_ticks;
177
+ -- tx_clk_en <= '0';
178
+ -- tx_hf_clk_en <= '0';
179
+ --end if;
180
+ else
181
+ tx_ticks <= (others => '0');
182
+ tx_clk_en <= '0';
183
+ tx_hf_clk_en <= '0';
184
+ end if;
185
+ end if;
186
+ end process;
187
+
188
+ -- -------------------------------------------------------------------------
189
+ -- UART TRANSMITTER INPUT DATA REGISTER
190
+ -- -------------------------------------------------------------------------
191
+
192
+ uart_tx_input_data_reg : process (CLK)
193
+ begin
194
+ if (rising_edge(CLK)) then
195
+ if (RST = '1') then
196
+ tx_data <= (others => '0');
197
+ elsif (DATA_SEND = '1' AND tx_busy = '0') then
198
+ tx_data <= DATA_IN;
199
+ end if;
200
+ end if;
201
+ end process;
202
+
203
+ uart_tx_ctrl_reg : process (CLK)
204
+ begin
205
+ if (rising_edge(CLK)) then
206
+ if (RST = '1') then
207
+ parity_bit_reg <= (others => '0');
208
+ stop_bit_reg <= (others => '0');
209
+ data_bits_reg <= "00001000";
210
+ divider_value_reg <= "000000000000000000100000";
211
+ div_correct_reg <= "00";
212
+ elsif ((tx_pstate = txsync) or (tx_pstate = idle)) then
213
+ --else
214
+ parity_bit_reg <= PARITY_BIT;
215
+ stop_bit_reg <= STOP_BIT;
216
+ data_bits_reg <= DATA_BITS;
217
+ divider_value_reg <= DIVIDER_VALUE;
218
+ div_correct_reg <= DIV_CORRECT;
219
+ end if;
220
+ end if;
221
+ end process;
222
+ -- -------------------------------------------------------------------------
223
+ -- UART TRANSMITTER BIT COUNTER
224
+ -- -------------------------------------------------------------------------
225
+
226
+ uart_tx_bit_counter : process (CLK)
227
+ begin
228
+ if (rising_edge(CLK)) then
229
+ if (RST = '1') then
230
+ tx_bit_count <= (others => '0');
231
+ elsif (tx_bit_count_en = '1' AND tx_clk_en = '1') then
232
+ if (tx_bit_count = "1111") then
233
+ tx_bit_count <= (others => '0');
234
+ else
235
+ tx_bit_count <= tx_bit_count + 1;
236
+ end if;
237
+ elsif (tx_bit_count_en = '0') then
238
+ tx_bit_count <= (others => '0');
239
+ end if;
240
+ end if;
241
+ end process;
242
+
243
+ -- -------------------------------------------------------------------------
244
+ -- UART TRANSMITTER PARITY GENERATOR
245
+ -- -------------------------------------------------------------------------
246
+
247
+ --uart_tx_parity_g : if (PARITY_BIT /= "none") generate
248
+ --uart_tx_parity_g uart_tx_parity_gen_i: entity work.UART_PARITY
249
+ -- generic map (
250
+ -- DATA_WIDTH => 8,
251
+ -- PARITY_TYPE => PARITY_BIT
252
+ -- )
253
+ -- port map (
254
+ -- DATA_IN => tx_data,
255
+ -- PARITY_OUT => tx_parity_bit
256
+ -- );
257
+ --end generate;
258
+
259
+ --uart_tx_noparity_g : if (PARITY_BIT = "none") generate
260
+ -- tx_parity_bit <= 'Z';
261
+ --end generate;
262
+
263
+ tx_parity_bit <= parity_temp;
264
+ -- -------------------------------------------------------------------------
265
+ -- UART TRANSMITTER OUTPUT DATA REGISTER
266
+ -- -------------------------------------------------------------------------
267
+
268
+ uart_tx_output_data_reg : process (CLK)
269
+ begin
270
+ if (rising_edge(CLK)) then
271
+ if (RST = '1') then
272
+ UART_TXD <= '1';
273
+ else
274
+ case tx_data_out_sel is
275
+ when "01" => -- START BIT
276
+ UART_TXD <= '0';
277
+ when "10" => -- DATA BITS
278
+ UART_TXD <= tx_data(to_integer(tx_bit_count));
279
+ when "11" => -- PARITY BIT
280
+ UART_TXD <= tx_parity_bit;
281
+ when others => -- STOP BIT OR IDLE
282
+ UART_TXD <= '1';
283
+ end case;
284
+ end if;
285
+ end if;
286
+ end process;
287
+
288
+ -- -------------------------------------------------------------------------
289
+ -- UART PARITY GEN
290
+ -- -------------------------------------------------------------------------
291
+ parity_gen : process (CLK)
292
+ begin
293
+ if (rising_edge(CLK)) then
294
+ if (RST = '1') then
295
+ parity_temp <= '0';
296
+ elsif (parity_bit_reg = "00000000") then --none
297
+ parity_temp <= '0';
298
+ elsif (parity_bit_reg = "00000001") then --odd
299
+ if (tx_pstate = startbit) then
300
+ parity_temp <= '1';
301
+ elsif (tx_bit_count_en = '1' AND tx_clk_en = '1') then
302
+ parity_temp <= parity_temp XOR tx_data(to_integer(tx_bit_count));
303
+ end if;
304
+ elsif (parity_bit_reg = "00000010") then --even
305
+ if (tx_pstate = startbit) then
306
+ parity_temp <= '0';
307
+ elsif (tx_bit_count_en = '1' AND tx_clk_en = '1') then
308
+ parity_temp <= parity_temp XOR tx_data(to_integer(tx_bit_count));
309
+ end if;
310
+ elsif (parity_bit_reg = "00000011") then --mark
311
+ parity_temp <= '1';
312
+ elsif (parity_bit_reg = "00000100") then --space
313
+ parity_temp <= '0';
314
+ end if;
315
+ end if;
316
+ end process;
317
+ -- -------------------------------------------------------------------------
318
+ -- UART TRANSMITTER FSM
319
+ -- -------------------------------------------------------------------------
320
+
321
+ -- PRESENT STATE REGISTER
322
+ --process (CLK)
323
+ --begin
324
+ -- if (rising_edge(CLK)) then
325
+ -- if (RST = '1') then
326
+ -- tx_pstate <= idle;
327
+ -- else
328
+ -- tx_pstate <= tx_nstate;
329
+ -- end if;
330
+ -- end if;
331
+ --end process;
332
+
333
+ -- NEXT STATE AND OUTPUTS LOGIC
334
+ -- process (tx_pstate, DATA_SEND, tx_hf_clk_en, tx_clk_en, tx_bit_count)
335
+ process (CLK)
336
+ begin
337
+ if (rising_edge(CLK)) then
338
+ if (RST = '1') then
339
+ tx_pstate <= idle;
340
+ else
341
+ case tx_pstate is
342
+ when idle =>
343
+ tx_busy <= '0';
344
+ tx_data_out_sel <= "00";
345
+ tx_bit_count_en <= '0';
346
+ tx_clk_divider_en <= '0';
347
+
348
+ if (DATA_SEND = '1') then
349
+ tx_pstate <= txsync;
350
+ else
351
+ tx_pstate <= idle;
352
+ end if;
353
+
354
+ when txsync =>
355
+ tx_busy <= '1';
356
+ tx_data_out_sel <= "00";
357
+ tx_bit_count_en <= '0';
358
+ tx_clk_divider_en <= '1';
359
+
360
+ --if (stop_bit_reg = "00000000") then
361
+ -- if (tx_clk_en = '1') then
362
+ -- tx_pstate <= startbit;
363
+ -- else
364
+ -- tx_pstate <= txsync;
365
+ -- end if;
366
+ --elsif (stop_bit_reg = "00000001") then
367
+ -- if (tx_hf_clk_en = '1') then
368
+ -- tx_pstate <= startbit;
369
+ -- else
370
+ -- tx_pstate <= txsync;
371
+ -- end if;
372
+ --elsif (stop_bit_reg = "00000010") then
373
+ -- if (tx_clk_en = '1') then
374
+ -- tx_pstate <= startbit;
375
+ -- else
376
+ -- tx_pstate <= txsync;
377
+ -- end if;
378
+ --end if;
379
+ if (tx_clk_en = '1') then
380
+ tx_pstate <= startbit;
381
+ else
382
+ tx_pstate <= txsync;
383
+ end if;
384
+ when startbit =>
385
+ tx_busy <= '1';
386
+ tx_data_out_sel <= "01";
387
+ tx_bit_count_en <= '0';
388
+ tx_clk_divider_en <= '1';
389
+
390
+ if (tx_clk_en = '1') then
391
+ tx_pstate <= databits;
392
+ else
393
+ tx_pstate <= startbit;
394
+ end if;
395
+
396
+ when databits =>
397
+ tx_busy <= '1';
398
+ tx_data_out_sel <= "10";
399
+ tx_bit_count_en <= '1';
400
+ tx_clk_divider_en <= '1';
401
+
402
+ --if ((tx_clk_en = '1') AND (tx_bit_count = "111")) then
403
+ if (tx_clk_en = '1') then
404
+ if ((data_bits_reg = "00000101") AND (tx_bit_count = "0100")) then --5 bit
405
+ if (parity_bit_reg = "00000000") then
406
+ tx_pstate <= stopbit;
407
+ else
408
+ tx_pstate <= paritybit;
409
+ end if ;
410
+ elsif ((data_bits_reg = "00000110") AND (tx_bit_count = "0101")) then --6 bit
411
+ if (parity_bit_reg = "00000000") then
412
+ tx_pstate <= stopbit;
413
+ else
414
+ tx_pstate <= paritybit;
415
+ end if ;
416
+ elsif ((data_bits_reg = "00000111") AND (tx_bit_count = "0110")) then --7 bit
417
+ if (parity_bit_reg = "00000000") then
418
+ tx_pstate <= stopbit;
419
+ else
420
+ tx_pstate <= paritybit;
421
+ end if ;
422
+ elsif ((data_bits_reg = "00001000") AND (tx_bit_count = "0111")) then --8 bit
423
+ if (parity_bit_reg = "00000000") then
424
+ tx_pstate <= stopbit;
425
+ else
426
+ tx_pstate <= paritybit;
427
+ end if ;
428
+ elsif ((data_bits_reg = "00010000") AND (tx_bit_count = "1111")) then --16 bit
429
+ if (parity_bit_reg = "00000000") then
430
+ tx_pstate <= stopbit;
431
+ else
432
+ tx_pstate <= paritybit;
433
+ end if ;
434
+ else
435
+ tx_pstate <= databits;
436
+ end if ;
437
+ else
438
+ tx_pstate <= databits;
439
+ end if;
440
+
441
+ when paritybit =>
442
+ tx_busy <= '1';
443
+ tx_data_out_sel <= "11";
444
+ tx_bit_count_en <= '0';
445
+ tx_clk_divider_en <= '1';
446
+
447
+ if (tx_clk_en = '1') then
448
+ tx_pstate <= stopbit;
449
+ else
450
+ tx_pstate <= paritybit;
451
+ end if;
452
+
453
+ when stopbit =>
454
+ tx_data_out_sel <= "00";
455
+ tx_bit_count_en <= '0';
456
+ tx_clk_divider_en <= '1';
457
+ if (stop_bit_reg = "00000000") then
458
+ tx_busy <= '0';
459
+ if (DATA_SEND = '1') then
460
+ tx_pstate <= txsync;
461
+ elsif (tx_clk_en = '1') then
462
+ tx_pstate <= idle;
463
+ else
464
+ tx_pstate <= stopbit;
465
+ end if;
466
+ elsif (stop_bit_reg = "00000001") then
467
+ tx_busy <= '1';
468
+ if (tx_clk_en = '1') then
469
+ tx_pstate <= stopbit15;
470
+ else
471
+ tx_pstate <= stopbit;
472
+ end if;
473
+ elsif (stop_bit_reg = "00000010") then
474
+ if (tx_clk_en = '1') then
475
+ tx_pstate <= stopbit2;
476
+ else
477
+ tx_pstate <= stopbit;
478
+ end if;
479
+ end if;
480
+
481
+ when stopbit15 =>
482
+ tx_data_out_sel <= "00";
483
+ tx_bit_count_en <= '0';
484
+ tx_clk_divider_en <= '1';
485
+ tx_busy <= '0';
486
+ if (DATA_SEND = '1') then
487
+ tx_pstate <= txsync;
488
+ elsif (tx_hf_clk_en = '1') then
489
+ tx_pstate <= idle;
490
+ else
491
+ tx_pstate <= stopbit15;
492
+ end if;
493
+
494
+ when stopbit2 =>
495
+ tx_data_out_sel <= "00";
496
+ tx_bit_count_en <= '0';
497
+ tx_clk_divider_en <= '1';
498
+ tx_busy <= '0';
499
+ if (DATA_SEND = '1') then
500
+ tx_pstate <= txsync;
501
+ elsif (tx_clk_en = '1') then
502
+ tx_pstate <= idle;
503
+ else
504
+ tx_pstate <= stopbit2;
505
+ end if;
506
+
507
+ when others =>
508
+ tx_busy <= '1';
509
+ tx_data_out_sel <= "00";
510
+ tx_bit_count_en <= '0';
511
+ tx_clk_divider_en <= '0';
512
+ tx_pstate <= idle;
513
+ end case;
514
+ end if;
515
+ end if;
516
+ end process;
517
+
518
+ end FULL;
ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/uart/usb_uart_config.v ADDED
@@ -0,0 +1,277 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ //
2
+ // File name :uart.v
3
+ // Module name :uart.v
4
+ // Created by :GaoYun Semi
5
+ // Author :(Winson)
6
+ // Created On :2020-11-05 14:26 GuangZhou
7
+ // Last Modified :
8
+ // Update Count :2020-11-05 14:26
9
+ // Description :
10
+ //----------------------------------------------------------------------
11
+ //===========================================
12
+ module usb_uart_config
13
+ (
14
+ input PHY_CLKOUT ,// clock
15
+ input RESET_IN ,// reset
16
+ input setup_active ,
17
+ input [3:0] endpt_sel ,
18
+ input usb_rxval ,
19
+ input usb_rxact ,
20
+ input [7:0] usb_rxdat ,
21
+ input usb_txact ,
22
+ input usb_txpop ,
23
+ output [11:0] usb_txdat_len_o ,
24
+ output [7:0] endpt0_dat_o ,
25
+ output endpt0_send_o ,
26
+ output uart1_en_o ,
27
+ output [31:0] uart1_BAUD_RATE_o ,
28
+ output [7:0] uart1_PARITY_BIT_o,
29
+ output [7:0] uart1_STOP_BIT_o ,
30
+ output [7:0] uart1_DATA_BITS_o,
31
+ output reg [15:0] s_ctl_sig
32
+
33
+ );
34
+
35
+ parameter ENDPT_UART_CONFIG =4'h0;
36
+ parameter ENDPT_UART1_DATA =4'h1;
37
+ parameter ENDPT_UART2_DATA =4'h2;
38
+ parameter ENDPT_UART3_DATA =4'h3;
39
+ parameter ENDPT_I2C1 =4'h4;
40
+ parameter ENDPT_I2C2 =4'h5;
41
+ parameter ENDPT_I2C3 =4'h6;
42
+ parameter ENDPT_I2C4 =4'h7;
43
+ parameter ENDPT_PARALLEL20 =4'h8;
44
+
45
+
46
+ localparam SET_LINE_CODING = 8'h20;
47
+ localparam GET_LINE_CODING = 8'h21;
48
+ localparam SET_CONTROL_LINE_STATE = 8'h22;
49
+
50
+ reg [7:0] stage;
51
+ reg [7:0] sub_stage;
52
+ reg [7:0] s_req_type;
53
+ reg [7:0] s_req_code;
54
+ reg [15:0]s_set_len;
55
+ reg [15:0]s_interface_num;
56
+ reg s_uart1_en;
57
+
58
+ reg [31:0]s_dte1_rate;
59
+ reg [7:0] s_char1_format;
60
+ reg [7:0] s_parity1_type;
61
+ reg [7:0] s_data1_bits;
62
+ reg [7:0] s_char2_format;
63
+ reg [7:0] s_parity2_type;
64
+ reg [7:0] s_data2_bits;
65
+ reg [31:0]s_dte3_rate;
66
+ reg [7:0] s_char3_format;
67
+ reg [7:0] s_parity3_type;
68
+ reg [7:0] s_data3_bits;
69
+ reg [7:0] endpt0_dat;
70
+ reg endpt0_send;
71
+
72
+ assign uart1_en_o=s_uart1_en;
73
+ assign uart1_BAUD_RATE_o=s_dte1_rate;
74
+ assign uart1_PARITY_BIT_o=s_parity1_type;
75
+ assign uart1_STOP_BIT_o=s_char1_format;
76
+ assign uart1_DATA_BITS_o=s_data1_bits;
77
+ assign endpt0_dat_o=endpt0_dat;
78
+ assign endpt0_send_o=endpt0_send;
79
+ assign usb_txdat_len_o=12'd7;
80
+
81
+ always @(posedge PHY_CLKOUT,posedge RESET_IN) begin
82
+ if (RESET_IN) begin
83
+ stage <= 8'd0;
84
+ sub_stage <= 8'd0;
85
+ s_req_type <= 8'd0;
86
+ s_req_code <= 8'd0;
87
+ s_ctl_sig <= 16'd0;
88
+ s_set_len <= 16'd0;
89
+ s_interface_num<= 16'd0;
90
+ s_dte1_rate <= 32'd115200;
91
+ s_char1_format <= 8'd0;
92
+ s_parity1_type <= 8'd0;
93
+ s_data1_bits <= 8'd8;
94
+ endpt0_send <= 1'd0;
95
+ endpt0_dat <= 8'd0;
96
+ s_uart1_en <= 1'b0;
97
+ end
98
+ else begin
99
+ if (setup_active) begin
100
+ if (usb_rxval) begin
101
+ case (stage)
102
+ 8'd0 : begin
103
+ s_req_type <= usb_rxdat;
104
+ stage <= stage + 8'd1;
105
+ sub_stage <= 8'd0;
106
+ endpt0_send <= 1'd0;
107
+ end
108
+ 8'd1 : begin
109
+ s_req_code <= usb_rxdat;
110
+ stage <= stage + 8'd1;
111
+ end
112
+ 8'd2 : begin
113
+ if (s_req_code == SET_CONTROL_LINE_STATE) begin
114
+ s_ctl_sig[7:0] <= usb_rxdat;
115
+ end
116
+ stage <= stage + 8'd1;
117
+ end
118
+ 8'd3 : begin
119
+ if (s_req_code == SET_CONTROL_LINE_STATE) begin
120
+ s_ctl_sig[15:8] <= usb_rxdat;
121
+ end
122
+ stage <= stage + 8'd1;
123
+ end
124
+ 8'd4 : begin
125
+ stage <= stage + 8'd1;
126
+ if (s_req_code == SET_LINE_CODING) begin
127
+ s_interface_num[7:0] <= usb_rxdat;
128
+ end
129
+ else if (s_req_code == SET_CONTROL_LINE_STATE) begin
130
+ s_interface_num[7:0] <= usb_rxdat;
131
+ end
132
+ end
133
+ 8'd5 : begin
134
+ stage <= stage + 8'd1;
135
+ if (s_req_code == SET_LINE_CODING) begin
136
+ s_interface_num[15:8] <= usb_rxdat;
137
+ end
138
+ else if (s_req_code == SET_CONTROL_LINE_STATE) begin
139
+ s_interface_num[15:8] <= usb_rxdat;
140
+ end
141
+
142
+ end
143
+ 8'd6 : begin
144
+ if (s_req_code == SET_LINE_CODING) begin
145
+ s_set_len[7:0] <= usb_rxdat;
146
+ end
147
+ else if (s_req_code == GET_LINE_CODING) begin
148
+ s_set_len[7:0] <= usb_rxdat;
149
+ if (s_interface_num == 16'd0) begin
150
+ endpt0_send <= 1'd1;
151
+ end
152
+ end
153
+ else if (s_req_code == SET_CONTROL_LINE_STATE) begin
154
+ if (s_interface_num == 16'd0) begin
155
+ s_uart1_en <= s_ctl_sig[0];
156
+ end
157
+ end
158
+ stage <= stage + 8'd1;
159
+ end
160
+ 8'd7 : begin
161
+ if (s_req_code == SET_LINE_CODING) begin
162
+ s_set_len[15:8] <= usb_rxdat;
163
+ end
164
+ else if (s_req_code == GET_LINE_CODING) begin
165
+ s_set_len[15:8] <= usb_rxdat;
166
+ if (s_interface_num == 16'd0) begin
167
+ endpt0_send <= 1'd1;
168
+ endpt0_dat <= s_dte1_rate[7:0];
169
+ end
170
+ end
171
+ stage <= stage + 8'd1;
172
+ sub_stage <= 8'd0;
173
+ end
174
+ 8'd8 : begin
175
+ stage <= stage;
176
+ end
177
+ endcase
178
+ end
179
+ end
180
+ else if (s_req_code == SET_LINE_CODING) begin
181
+ stage <= 8'd0;
182
+ if ((usb_rxact)&&(endpt_sel ==ENDPT_UART_CONFIG)) begin
183
+ if (usb_rxval) begin
184
+ sub_stage <= sub_stage + 8'd1;
185
+ if(s_interface_num==0)begin
186
+ if (sub_stage <= 3) begin
187
+ s_dte1_rate <= {usb_rxdat,s_dte1_rate[31:8]};
188
+ end
189
+ else if (sub_stage == 4) begin
190
+ s_char1_format <= usb_rxdat;
191
+ end
192
+ else if (sub_stage == 5) begin
193
+ s_parity1_type <= usb_rxdat;
194
+ end
195
+ else if (sub_stage == 6) begin
196
+ s_data1_bits <= usb_rxdat;
197
+ end
198
+ end
199
+ end
200
+ end
201
+ end
202
+ else if (s_req_code == GET_LINE_CODING) begin
203
+ stage <= 8'd0;
204
+ if ((usb_txact)&&(endpt_sel ==ENDPT_UART_CONFIG)) begin
205
+ if (endpt0_send == 1'b1) begin
206
+ if (usb_txpop) begin
207
+ sub_stage <= sub_stage + 8'd1;
208
+ end
209
+ if (s_req_code == GET_LINE_CODING) begin
210
+ /* if (sub_stage <= 0) begin //old controller version
211
+ endpt0_dat <= s_dte_rate[7:0];
212
+ end
213
+ else if (sub_stage == 1) begin
214
+ endpt0_dat <= s_dte_rate[15:8];
215
+ end
216
+ else if (sub_stage == 2) begin
217
+ endpt0_dat <= s_dte_rate[23:16];
218
+ end
219
+ else if (sub_stage == 3) begin
220
+ endpt0_dat <= s_dte_rate[31:24];
221
+ end
222
+ else if (sub_stage == 4) begin
223
+ endpt0_dat <= s_char_format;
224
+ end
225
+ else if (sub_stage == 5) begin
226
+ endpt0_dat <= s_parity_type;
227
+ end
228
+ else if (sub_stage == 6) begin
229
+ endpt0_dat <= s_data_bits;
230
+ end
231
+ else begin
232
+ endpt0_send <= 1'b0;
233
+ end*/
234
+ if (usb_txpop) begin// new controller version
235
+ if(s_interface_num==0)begin
236
+ if (sub_stage <= 0) begin
237
+ endpt0_dat <= s_dte1_rate[15:8];
238
+ end
239
+ else if (sub_stage == 1) begin
240
+ endpt0_dat <= s_dte1_rate[23:16];
241
+ end
242
+ else if (sub_stage == 2) begin
243
+ endpt0_dat <= s_dte1_rate[31:24];
244
+ end
245
+ else if (sub_stage == 3) begin
246
+ endpt0_dat <= s_char1_format;
247
+ end
248
+ else if (sub_stage == 4) begin
249
+ endpt0_dat <= s_parity1_type;
250
+ end
251
+ else if (sub_stage == 5) begin
252
+ endpt0_dat <= s_data1_bits;
253
+ end
254
+ else if (sub_stage == 6) begin
255
+ endpt0_send <= 1'b0;
256
+ end
257
+ else begin
258
+ endpt0_send <= 1'b0;
259
+ end
260
+ end
261
+ end
262
+ end
263
+ end
264
+ end
265
+ else begin
266
+ sub_stage <= 8'd0;
267
+ end
268
+ end
269
+ else begin
270
+ stage <= 8'd0;
271
+ sub_stage <= 8'd0;
272
+ end
273
+ end
274
+ end
275
+
276
+
277
+ endmodule
ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/uart_packet_wrapper_rx.sv ADDED
@@ -0,0 +1,99 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+
2
+ module uart_packet_wrapper_rx(
3
+ input clk,
4
+ input reset,
5
+ input [7:0] uart_rx_data,
6
+ input uart_rx_val,
7
+ input uartDisabled,
8
+ output reg [6:0] rx_address,
9
+ output reg [79:0] rx_data,
10
+ output reg rx_data_val
11
+ );
12
+
13
+ localparam RX_IDLE = 3'd1;
14
+ localparam RX_ADDR = 3'd2;
15
+ localparam RX_COUNT = 3'd3;
16
+ localparam RX_DATA = 3'd4;
17
+ localparam RX_CRC = 3'd5;
18
+ localparam RX_ERROR = 3'd6;
19
+
20
+ reg [2:0] rx_state;
21
+ reg [7:0] rx_count;
22
+ reg [7:0] crc;
23
+ always@(posedge clk or posedge reset)
24
+ begin
25
+ if(reset) begin
26
+ rx_state <= RX_IDLE;
27
+ end else begin
28
+
29
+ rx_data_val <= 1'd0;
30
+
31
+ case(rx_state)
32
+
33
+ RX_IDLE :
34
+ if((uart_rx_val)&&(uart_rx_data == 8'h8F))
35
+ rx_state <= RX_ADDR;
36
+
37
+ RX_ADDR :
38
+ if(uart_rx_val) begin
39
+ rx_state <= RX_COUNT;
40
+ rx_address <= uart_rx_data[6:0];
41
+ end
42
+
43
+ RX_COUNT :
44
+ if(uart_rx_val) begin
45
+ rx_state <= RX_DATA;
46
+ rx_count <= uart_rx_data;
47
+ end
48
+
49
+ RX_DATA :
50
+ if(uart_rx_val) begin
51
+ if (rx_count < 8'd2) begin
52
+ rx_state <= RX_CRC;
53
+ end else begin
54
+ rx_count <= rx_count - 1'd1;
55
+ end
56
+ rx_data <= {rx_data[71:0], uart_rx_data};
57
+ end
58
+
59
+ RX_CRC :
60
+ if(uart_rx_val) begin
61
+ if (crc == uart_rx_data) begin
62
+ rx_data_val <= 1'd1;
63
+ rx_state <= RX_IDLE;
64
+ end else begin
65
+ rx_state <= RX_ERROR;
66
+ end
67
+ end
68
+
69
+ RX_ERROR :
70
+ rx_state <= RX_IDLE;
71
+
72
+ default :
73
+ rx_state <= RX_IDLE;
74
+ endcase
75
+ end
76
+ end
77
+
78
+ // CRC-8-SAE J1850 parameters
79
+ parameter POLY = 8'h1D; // Polynomial: x^8 + x^5 + x^4 + 1
80
+ reg [3:0] bit_count;
81
+
82
+ always @(posedge clk) begin
83
+ if (rx_state == RX_IDLE && ~uart_rx_val) begin
84
+ crc <= 8'hFF;
85
+ bit_count <= 4'd0;
86
+ end else if (uart_rx_val) begin
87
+ bit_count <= 4'd8;
88
+ crc <= crc ^ uart_rx_data;
89
+ end else if (bit_count > 0) begin
90
+ bit_count <= bit_count - 1'd1;
91
+ if (crc[7]) begin
92
+ crc <= {crc[6:0], 1'b0} ^ POLY;
93
+ end else begin
94
+ crc <= {crc[6:0], 1'b0};
95
+ end
96
+ end
97
+ end
98
+
99
+ endmodule
ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/uart_packet_wrapper_tx.sv ADDED
@@ -0,0 +1,162 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+
2
+ module uart_packet_wrapper_tx(
3
+ input clk,
4
+ input reset,
5
+ input uart_tx_busy,
6
+ output reg [7:0] uart_tx_data,
7
+ output reg uart_tx_val,
8
+ output write_done,
9
+ input write,
10
+ input menuDisabled,
11
+ input uartDisabled,
12
+ input [6:0] tx_address,
13
+ input [7:0] tx_byteCount,
14
+ output reg [7:0] tx_bytepos,
15
+ input [7:0] tx_senddata
16
+ );
17
+
18
+ // Extra rate limiter between UART bytes
19
+ reg [3:0] cnt = 'd0;
20
+ always@(posedge clk)
21
+ cnt <= cnt + 1'd1;
22
+
23
+ localparam TX_IDLE = 4'd1;
24
+ localparam TX_ADDR = 4'd2;
25
+ localparam TX_COUNT = 4'd3;
26
+ localparam TX_DATA = 4'd4;
27
+ localparam TX_CRC = 4'd5;
28
+ localparam TX_DONE = 4'd6;
29
+ localparam TX_SLEEP = 4'd7;
30
+ localparam TX_AWAKE = 4'd8;
31
+ localparam TX_START = 4'd9;
32
+
33
+ reg [4:0] tx_state;
34
+ reg [7:0] bytecount;
35
+
36
+ always@(posedge clk or posedge reset) begin
37
+ if(reset)
38
+ tx_state <= TX_IDLE;
39
+ else begin
40
+ if(uartDisabled)
41
+ tx_state <= TX_IDLE;
42
+ else begin
43
+ case(tx_state)
44
+
45
+ TX_IDLE :
46
+ if (menuDisabled) begin
47
+ tx_state <= TX_SLEEP;
48
+ end else if(~uart_tx_busy&&write) begin
49
+ tx_state <= TX_ADDR;
50
+ end
51
+
52
+ TX_ADDR :
53
+ if((~uart_tx_busy)&&(cnt == 'd0))
54
+ tx_state <= TX_COUNT;
55
+
56
+ TX_COUNT :
57
+ if((~uart_tx_busy)&&(cnt == 'd0)) begin
58
+ bytecount <= tx_byteCount;
59
+ tx_bytepos <= 8'd0;
60
+ tx_state <= TX_DATA;
61
+ end
62
+
63
+ TX_DATA :
64
+ if((~uart_tx_busy)&&(cnt == 'd0)) begin
65
+ if (bytecount == 8'd1) begin
66
+ tx_state <= TX_CRC;
67
+ end else begin
68
+ bytecount <= bytecount - 1'd1;
69
+ tx_bytepos <= tx_bytepos + 1'd1;
70
+ end
71
+ end
72
+
73
+ TX_CRC :
74
+ if((~uart_tx_busy)&&(cnt == 'd0))
75
+ tx_state <= TX_DONE;
76
+
77
+ TX_DONE :
78
+ if((~uart_tx_busy)&&(cnt == 'd0))
79
+ tx_state <= TX_IDLE;
80
+
81
+ TX_SLEEP :
82
+ if(~uart_tx_busy&&write) begin
83
+ tx_state <= TX_AWAKE;
84
+ bytecount <= 8'd20; // test show about 15 bytes are lost after sleep
85
+ end
86
+
87
+ TX_AWAKE :
88
+ if((~uart_tx_busy)&&(cnt == 'd0)) begin
89
+ if (bytecount == 8'd1) begin
90
+ tx_state <= TX_START;
91
+ end else begin
92
+ bytecount <= bytecount - 1'd1;
93
+ end
94
+ end
95
+
96
+ TX_START:
97
+ if((~uart_tx_busy)&&(cnt == 'd0))
98
+ tx_state <= TX_ADDR;
99
+
100
+ default :
101
+ tx_state <= TX_IDLE;
102
+ endcase
103
+ end
104
+ end
105
+ end
106
+
107
+ always@(posedge clk)
108
+ begin
109
+ uart_tx_val <= 1'd0;
110
+ if(~uart_tx_busy&~uartDisabled) begin
111
+ if(tx_state == TX_IDLE | tx_state == TX_SLEEP) begin
112
+ uart_tx_val <= write;
113
+ end else begin
114
+ if((cnt == 'd0)&&(tx_state != TX_DONE)) begin
115
+ uart_tx_val <= 1'd1;
116
+ end
117
+ end
118
+ end
119
+ end
120
+
121
+ assign write_done = tx_state == TX_DONE && (~uart_tx_busy)&&(cnt == 'd0);
122
+
123
+ reg [7:0] crc;
124
+
125
+ always@(posedge clk)
126
+ begin
127
+ case(tx_state)
128
+ TX_IDLE: uart_tx_data <= 8'h8F; //Magic header
129
+ TX_ADDR: uart_tx_data <= {1'd0,tx_address[6:0]};
130
+ TX_COUNT: uart_tx_data <= tx_byteCount;
131
+ TX_DATA: uart_tx_data <= tx_senddata;
132
+ TX_CRC: uart_tx_data <= crc;
133
+ TX_SLEEP: uart_tx_data <= 8'h00;
134
+ TX_AWAKE: uart_tx_data <= 8'h00;
135
+ TX_START: uart_tx_data <= 8'h8F; //Magic header
136
+ default: uart_tx_data <= 8'hCA;
137
+ endcase
138
+ end
139
+
140
+ // CRC-8-SAE J1850 parameters
141
+ parameter POLY = 8'h1D; // Polynomial: x^8 + x^5 + x^4 + 1
142
+ reg [3:0] bit_count;
143
+
144
+ always @(posedge clk) begin
145
+ if (tx_state == TX_IDLE && ~write) begin
146
+ crc <= 8'hFF;
147
+ bit_count <= 4'd0;
148
+ end else if (uart_tx_val && tx_state != TX_SLEEP && tx_state != TX_AWAKE && tx_state != TX_START) begin
149
+ bit_count <= 4'd8;
150
+ crc <= crc ^ uart_tx_data;
151
+ end else if (bit_count > 0) begin
152
+ bit_count <= bit_count - 1'd1;
153
+ if (crc[7]) begin
154
+ crc <= {crc[6:0], 1'b0} ^ POLY;
155
+ end else begin
156
+ crc <= {crc[6:0], 1'b0};
157
+ end
158
+ end
159
+ end
160
+
161
+
162
+ endmodule
ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/vid_system_top.sv ADDED
@@ -0,0 +1,476 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ // vid_system_top.v
2
+
3
+ module vid_system_top #(parameter ISSIMU=0)
4
+ (
5
+ input gClk,
6
+ input hClk,
7
+ input pClk,
8
+ input reset,
9
+
10
+ input BTN_MENU,
11
+ output reg slideOutActive,
12
+
13
+ output [5:0] LCD_DB,
14
+ output LCD_ENABLE_UVC,
15
+ output [17:0] LCD_DB_UVC,
16
+ output LCD_DOTCLK,
17
+ output LCD_ENABLE,
18
+ output LCD_HSYNC,
19
+ output LCD_RESET,
20
+ output LCD_SPI_CSX,
21
+ output LCD_SPI_SCLK,
22
+ output LCD_SPI_SDA,
23
+ input LCD_TE,
24
+ input LCD_EN,
25
+ output LCD_GENLOCK,
26
+ output LCD_VSYNC,
27
+
28
+ input frameBlendEnable,
29
+ input colorCorrectionEnableLCD,
30
+ input colorCorrectionEnableUVC,
31
+ input voltageLow,
32
+ input [1:0] lowBattDispMode,
33
+ input showTimer,
34
+ input runTimer,
35
+ input resetTimer,
36
+ input gSecondEna,
37
+ input gPercentEna,
38
+ input [31:0] debug_system,
39
+ input debug_system_on,
40
+
41
+ output hGBNewLine,
42
+ output reg [22:0] hGBAddress,
43
+ output hGBWrite,
44
+ output [15:0] hGBData,
45
+
46
+ output hValid,
47
+ output hHsync,
48
+ output hVsync,
49
+ input [15:0] hWrBurstQ,
50
+ input [15:0] hWrBurstQ2,
51
+ output reg hDrawOSD,
52
+
53
+ output LCD_INIT_DONE,
54
+ input gb_lcd_clkena,
55
+ input [14:0] gb_lcd_data,
56
+ input [1:0] gb_lcd_mode,
57
+ input gb_lcd_on,
58
+ input gb_lcd_vsync
59
+
60
+ );
61
+
62
+ ODDR u_ODDR(
63
+ .Q0(LCD_DOTCLK),
64
+ .Q1(),
65
+ .D0(1'd1),
66
+ .D1(1'd0),
67
+ .TX(1'd1),
68
+ .CLK(gClk)
69
+ );
70
+
71
+
72
+ ST7785_init #(ISSIMU)
73
+ u_ST7785_init(
74
+ .clk(pClk),
75
+ .reset(reset),
76
+ .LCD_CS(LCD_SPI_CSX),
77
+ .LCD_SCK(LCD_SPI_SCLK),
78
+ .LCD_SDA_SDI(LCD_SPI_SDA),
79
+ .LCD_RST(LCD_RESET),
80
+ .LCD_INIT_DONE(LCD_INIT_DONE)
81
+ );
82
+
83
+ wire [14:0] hColorPixel;
84
+ assign hHsync = gb_lcd_mode[1];
85
+ assign hVsync = gb_lcd_vsync;
86
+
87
+
88
+ reg hHsync_r1;
89
+ reg hVsync_r1;
90
+ always@(posedge hClk)
91
+ begin
92
+ hHsync_r1 <= hHsync;
93
+ hVsync_r1 <= hVsync;
94
+ end
95
+
96
+ reg hGBFrameBufferNum;
97
+ always@(posedge hClk)
98
+ begin
99
+ if(hVsync&~hVsync_r1)
100
+ begin
101
+ hGBAddress <= 23'h10000;
102
+ end
103
+ else
104
+ if(hGBNewLine&~hVsync)
105
+ hGBAddress <= hGBAddress + 'd320;
106
+ end
107
+
108
+ assign hGBWrite = gb_lcd_clkena;
109
+ assign hGBNewLine = ~hHsync&hHsync_r1;
110
+ assign hGBData = {1'd0, gb_lcd_data[14:0]};
111
+
112
+ reg [7:0] screenX;
113
+ reg [7:0] screenY;
114
+ always@(posedge hClk) begin
115
+ if (hHsync&~hHsync_r1) begin
116
+ screenX <= 8'd0;
117
+ screenY <= screenY + 1'd1;
118
+ end else if (gb_lcd_clkena) begin
119
+ screenX <= screenX + 1'd1;
120
+ end
121
+
122
+ if(hVsync&~hVsync_r1) begin
123
+ hDrawOSD <= ~BTN_MENU;
124
+ screenY <= 8'd0;
125
+ end
126
+ end
127
+
128
+ wire [6:0] sum_r = {hWrBurstQ[4:0],1'd0} + {gb_lcd_data[4:0],1'd0};
129
+ wire [6:0] sum_g = {hWrBurstQ[9:5],1'd0} + {gb_lcd_data[9:5],1'd0};
130
+ wire [6:0] sum_b = {hWrBurstQ[14:10],1'd0} + {gb_lcd_data[14:10],1'd0};
131
+
132
+ wire [5:0] game_r = frameBlendEnable ? sum_r[6:1] : {gb_lcd_data[4:0],1'b0};
133
+ wire [5:0] game_g = frameBlendEnable ? sum_g[6:1] : {gb_lcd_data[9:5],1'b0};
134
+ wire [5:0] game_b = frameBlendEnable ? sum_b[6:1] : {gb_lcd_data[14:10],1'b0};
135
+
136
+ wire [17:0] psel = {game_b,game_g,game_r};
137
+
138
+ // OSD and overlay
139
+ reg [17:0] overlayColor;
140
+ reg overlayActive;
141
+ reg overlayCrush;
142
+
143
+ wire overlayActive_batteryFront;
144
+ wire overlayActive_batteryBack;
145
+ wire overlayActive_TimerFront;
146
+ wire overlayActive_TimerBack;
147
+ wire overlayActive_TimerNumber;
148
+ wire overlayActive_debug;
149
+
150
+ overlayBatteryFront u_overlayBatteryFront
151
+ (
152
+ .screenX (screenX),
153
+ .screenY (screenY),
154
+ .overlayActive (overlayActive_batteryFront)
155
+ );
156
+
157
+ overlayBatteryBack u_overlayBatteryBack
158
+ (
159
+ .screenX (screenX),
160
+ .screenY (screenY),
161
+ .overlayActive (overlayActive_batteryBack)
162
+ );
163
+
164
+ overlayTimerFront u_overlayTimerFront
165
+ (
166
+ .screenX (screenX),
167
+ .screenY (screenY),
168
+ .overlayActive (overlayActive_TimerFront)
169
+ );
170
+
171
+ overlayTimerBack u_overlayTimerBack
172
+ (
173
+ .screenX (screenX),
174
+ .screenY (screenY),
175
+ .overlayActive (overlayActive_TimerBack)
176
+ );
177
+
178
+ reg [3:0] timePL = 4'd0;
179
+ reg [3:0] timePH = 4'd0;
180
+ reg [3:0] timeSL = 4'd0;
181
+ reg [3:0] timeSH = 4'd0;
182
+ reg [3:0] timeML = 4'd0;
183
+ reg [3:0] timeMH = 4'd0;
184
+ reg [3:0] timeHL = 4'd0;
185
+
186
+ // Flash the low battery indicator when configured
187
+ localparam LB_VIS_SHOW = 2'b00;
188
+ localparam LB_VIS_BLINK = 2'b01;
189
+ localparam LB_VIS_HIDE = 2'b10;
190
+ localparam LB_VIS_RSVD = 2'b11;
191
+
192
+ typedef enum reg {
193
+ LBB_HIDE = 1'b0,
194
+ LBB_SHOW = 1'b1
195
+ } low_batt_blink_state_t;
196
+
197
+ low_batt_blink_state_t LBBState = LBB_HIDE;
198
+ reg showLowBatt = 0;
199
+
200
+ always@(posedge gClk) begin
201
+ if (runTimer && gPercentEna) begin
202
+ if (timePL == 4'd9) begin
203
+ timePH <= timePH + 1'd1;
204
+ timePL <= 4'd0;
205
+ end else begin
206
+ timePL <= timePL + 1'd1;
207
+ end
208
+ end
209
+
210
+ if (runTimer && gSecondEna) begin
211
+ timePL <= 4'd0;
212
+ timePH <= 4'd0;
213
+ if (timeSL == 4'd9) begin
214
+ timeSL <= 4'd0;
215
+ if (timeSH == 4'd5) begin
216
+ timeSH <= 4'd0;
217
+ if (timeML == 4'd9) begin
218
+ timeML <= 4'd0;
219
+ if (timeMH == 4'd5) begin
220
+ timeMH <= 4'd0;
221
+ if (timeHL == 4'd9) begin
222
+ timePL <= 4'd9;
223
+ timePH <= 4'd9;
224
+ timeSL <= 4'd9;
225
+ timeSH <= 4'd5;
226
+ timeML <= 4'd9;
227
+ timeMH <= 4'd5;
228
+ timeHL <= 4'd9;
229
+ end else begin
230
+ timeHL <= timeHL + 1'd1;
231
+ end
232
+ end else begin
233
+ timeMH <= timeMH + 1'd1;
234
+ end
235
+ end else begin
236
+ timeML <= timeML + 1'd1;
237
+ end
238
+ end else begin
239
+ timeSH <= timeSH + 1'd1;
240
+ end
241
+ end else begin
242
+ timeSL <= timeSL + 1'd1;
243
+ end
244
+ end
245
+
246
+ if (resetTimer) begin
247
+ timePL <= 4'd0;
248
+ timePH <= 4'd0;
249
+ timeSL <= 4'd0;
250
+ timeSH <= 4'd0;
251
+ timeML <= 4'd0;
252
+ timeMH <= 4'd0;
253
+ timeHL <= 4'd0;
254
+ end
255
+
256
+ if ( lowBattDispMode == LB_VIS_BLINK ) begin
257
+ if (gSecondEna == 1) begin
258
+ case (LBBState)
259
+ LBB_HIDE: begin
260
+ LBBState <= LBB_SHOW;
261
+ end
262
+
263
+ LBB_SHOW: begin
264
+ LBBState <= LBB_HIDE;
265
+ end
266
+ endcase
267
+ end
268
+
269
+ showLowBatt <= (LBBState == LBB_SHOW);
270
+ end else if ( lowBattDispMode == LB_VIS_HIDE ) begin
271
+ LBBState <= LBB_HIDE;
272
+ showLowBatt <= 0;
273
+ end else begin
274
+ LBBState <= LBB_HIDE;
275
+ showLowBatt <= ((lowBattDispMode == LB_VIS_SHOW) || (lowBattDispMode == LB_VIS_RSVD));
276
+ end
277
+
278
+
279
+ end
280
+
281
+ wire [1:0] screenXNumber = (screenX >= 4 && screenX <= 6) ? (screenX - 4) :
282
+ (screenX >= 8 && screenX <= 8) ? (screenX - 8) :
283
+ (screenX >= 10 && screenX <= 13) ? (screenX - 10) :
284
+ (screenX >= 14 && screenX <= 17) ? (screenX - 14) :
285
+ (screenX >= 18 && screenX <= 18) ? (screenX - 18) :
286
+ (screenX >= 20 && screenX <= 23) ? (screenX - 20) :
287
+ (screenX >= 24 && screenX <= 27) ? (screenX - 24) :
288
+ (screenX >= 28 && screenX <= 28) ? (screenX - 28) :
289
+ (screenX >= 30 && screenX <= 33) ? (screenX - 30) :
290
+ (screenX >= 34 && screenX <= 37) ? (screenX - 34) :
291
+ 2'd3;
292
+
293
+ wire [2:0] screenYNumber = (screenY >= 8 && screenY <= 12) ? (screenY - 8) :
294
+ 3'd7;
295
+
296
+ wire [3:0] screenNumber = (screenX >= 4 && screenX <= 6) ? timeHL :
297
+ (screenX >= 8 && screenX <= 8) ? 4'd10 :
298
+ (screenX >= 10 && screenX <= 13) ? timeMH :
299
+ (screenX >= 14 && screenX <= 17) ? timeML :
300
+ (screenX >= 18 && screenX <= 18) ? 4'd10 :
301
+ (screenX >= 20 && screenX <= 23) ? timeSH :
302
+ (screenX >= 24 && screenX <= 27) ? timeSL :
303
+ (screenX >= 28 && screenX <= 28) ? 4'd11 :
304
+ (screenX >= 30 && screenX <= 33) ? timePH :
305
+ (screenX >= 34 && screenX <= 37) ? timePL :
306
+ 4'd15;
307
+
308
+ overlayTimerNumber u_overlayTimerNumber
309
+ (
310
+ .screenX (screenXNumber),
311
+ .screenY (screenYNumber),
312
+ .number (screenNumber),
313
+ .overlayActive (overlayActive_TimerNumber)
314
+ );
315
+
316
+
317
+
318
+ wire [1:0] debugXNumber = (screenX >= 0 && screenX <= 3) ? (screenX - 0) :
319
+ (screenX >= 4 && screenX <= 7) ? (screenX - 4) :
320
+ (screenX >= 8 && screenX <= 11) ? (screenX - 8) :
321
+ (screenX >= 12 && screenX <= 15) ? (screenX - 12) :
322
+ (screenX >= 16 && screenX <= 19) ? (screenX - 16) :
323
+ (screenX >= 20 && screenX <= 23) ? (screenX - 20) :
324
+ (screenX >= 24 && screenX <= 27) ? (screenX - 24) :
325
+ (screenX >= 28 && screenX <= 31) ? (screenX - 28) :
326
+ 2'd3;
327
+
328
+ wire [2:0] debugYNumber = (screenY >= 136) ? (screenY - 136) :
329
+ 3'd7;
330
+
331
+ wire [3:0] debugNumber = (screenX >= 0 && screenX <= 3) ? debug_system[31:28] :
332
+ (screenX >= 4 && screenX <= 7) ? debug_system[27:24] :
333
+ (screenX >= 8 && screenX <= 11) ? debug_system[23:20] :
334
+ (screenX >= 12 && screenX <= 15) ? debug_system[19:16] :
335
+ (screenX >= 16 && screenX <= 19) ? debug_system[15:12] :
336
+ (screenX >= 20 && screenX <= 23) ? debug_system[11: 8] :
337
+ (screenX >= 24 && screenX <= 27) ? debug_system[ 7: 4] :
338
+ (screenX >= 28 && screenX <= 31) ? debug_system[ 3: 0] :
339
+ 4'd15;
340
+
341
+ overlayDebug u_overlayDebug
342
+ (
343
+ .screenX (debugXNumber),
344
+ .screenY (debugYNumber),
345
+ .number (debugNumber),
346
+ .overlayActive (overlayActive_debug)
347
+ );
348
+
349
+
350
+ wire osdTransparent = (hWrBurstQ2 == 16'hF81F) ? 1'd1 : 1'd0;
351
+
352
+ always@(posedge hClk)
353
+ begin
354
+ overlayColor <= {hWrBurstQ2[4:0],hWrBurstQ2[0],hWrBurstQ2[10:6],hWrBurstQ2[6],hWrBurstQ2[15:11],hWrBurstQ2[11]};
355
+ overlayActive <= hDrawOSD & ~osdTransparent;
356
+ overlayCrush <= hDrawOSD & osdTransparent;
357
+
358
+ if (~hDrawOSD) begin
359
+ if (debug_system_on && overlayActive_debug) begin
360
+ overlayColor <= {6'h00, 6'h00, 6'h00}; // black
361
+ overlayActive <= 1'b1;
362
+ end else if (debug_system_on && screenX <= 31 && screenY >= 136) begin
363
+ overlayColor <= {6'h3F, 6'h3F, 6'h3F}; // white
364
+ overlayActive <= 1'b1;
365
+ end else if (voltageLow && showLowBatt && overlayActive_batteryFront) begin
366
+ overlayColor <= {6'h00, 6'h00, 6'h3F}; // red
367
+ overlayActive <= 1'b1;
368
+ end else if (showTimer && (overlayActive_TimerFront || overlayActive_TimerNumber)) begin
369
+ overlayColor <= {6'h3F, 6'h3F, 6'h3F}; // white
370
+ overlayActive <= 1'b1;
371
+ end else if ((voltageLow && showLowBatt && overlayActive_batteryBack) || (showTimer && overlayActive_TimerBack)) begin
372
+ overlayCrush <= 1'b1;
373
+ end
374
+ end
375
+ end
376
+
377
+ // High = Blue
378
+ // Mid = Green
379
+ // LSBs == Red
380
+
381
+ wire hValidCorrected;
382
+ wire hHsyncCorrected;
383
+ wire hVsyncCorrected;
384
+ wire [17:0] hColorPixelCorrected;
385
+ wire [17:0] hColorPixelUVCCorrected;
386
+
387
+ color_correction u_color_correction(
388
+ .hClk(hClk),
389
+ .hValid(gb_lcd_clkena),
390
+ .hHsync(gb_lcd_mode[1]),
391
+ .hVsync(gb_lcd_vsync),
392
+ .hCorrectLCD(colorCorrectionEnableLCD),
393
+ .hCorrectUVC(colorCorrectionEnableUVC),
394
+ .hColorPixel(psel),
395
+ .hValidCorrected(hValidCorrected),
396
+ .hHsyncCorrected(hHsyncCorrected),
397
+ .hVsyncCorrected(hVsyncCorrected),
398
+ .hColorPixelCorrected(hColorPixelCorrected),
399
+ .hColorPixelUVCCorrected(hColorPixelUVCCorrected)
400
+ );
401
+
402
+ wire [17:0] hColorPixelLCD = overlayCrush ? {2'd0,hColorPixelCorrected[17:14],2'd0,hColorPixelCorrected[11:8],2'd0,hColorPixelCorrected[5:2]} :
403
+ overlayActive ? overlayColor : hColorPixelCorrected;
404
+
405
+ wire [17:0] hColorPixelUVC = overlayCrush ? {2'd0,hColorPixelUVCCorrected[17:14],2'd0,hColorPixelUVCCorrected[11:8],2'd0,hColorPixelUVCCorrected[5:2]} :
406
+ overlayActive ? overlayColor : hColorPixelUVCCorrected;
407
+
408
+ ST7785_panel_master u_ST7785_panel_master(
409
+ .gClk(gClk),
410
+ .nRST(LCD_INIT_DONE),
411
+ .hClk(hClk),
412
+ .hValid(hValidCorrected),
413
+ .hHsync(hHsyncCorrected),
414
+ .hVsync(hVsyncCorrected),
415
+ .hColorPixel(hColorPixelLCD),
416
+ .hColorPixelUVC(hColorPixelUVC),
417
+
418
+ .lcd_on(gb_lcd_on),
419
+ .LCD_EN(LCD_EN),
420
+ .LCD_DE(LCD_ENABLE),
421
+ .LCD_HSYNC(LCD_HSYNC),
422
+ .LCD_VSYNC(LCD_VSYNC),
423
+ .LCD_GENLOCK(LCD_GENLOCK),
424
+ .LCD_DB(LCD_DB),
425
+ .LCD_ENABLE_UVC(LCD_ENABLE_UVC),
426
+ .LCD_DB_UVC(LCD_DB_UVC)
427
+ );
428
+
429
+ endmodule
430
+
431
+ module color_correction(
432
+ input hClk,
433
+
434
+ input hCorrectLCD,
435
+ input hCorrectUVC,
436
+
437
+ input hValid,
438
+ input hHsync,
439
+ input hVsync,
440
+ input [17:0] hColorPixel,
441
+
442
+ output reg hValidCorrected,
443
+ output reg hHsyncCorrected,
444
+ output reg hVsyncCorrected,
445
+ output reg [17:0] hColorPixelCorrected,
446
+ output reg [17:0] hColorPixelUVCCorrected
447
+ );
448
+
449
+ wire [5:0] red = hColorPixel[5:0];
450
+ wire [5:0] green = hColorPixel[11:6];
451
+ wire [5:0] blue = hColorPixel[17:12];
452
+
453
+ wire [9:0] r10 = (red * 'd13) + (green * 'd2) + blue; // 999
454
+ wire [7:0] g8 = (green * 'd3) + blue; // 252
455
+ wire [9:0] b10 = (red * 'd3) + (green * 'd2) + (blue * 'd11); // 1008
456
+
457
+ wire [15:0] rlcd1 = red[5:1] * 'd216 + green[5:1] * 'd30;
458
+ wire [15:0] rlcd2 = blue[5:1] * 'd25;
459
+ wire [15:0] rlcd3 = ( rlcd1 < rlcd2 ) ? 'd0 : rlcd1 - rlcd2;
460
+ wire [15:0] glcd = red[5:1] * 'd39 + green[5:1] * 'd137 + blue[5:1] * 'd24;//620 + 1054 + 217 = 1891
461
+ wire [15:0] blcd = red[5:1] * 'd21 + green[5:1] * 'd24 + blue[5:1] * 'd125;//620 + 1054 + 217 = 1891
462
+
463
+ wire [5:0] blcdc = blcd[13] ? 6'h3F : blcd[12:7];
464
+ wire [5:0] glcdc = glcd[13] ? 6'h3F : glcd[12:7];
465
+ wire [5:0] rlcdc = rlcd3[13] ? 6'h3F : rlcd3[12:7];
466
+
467
+ always@(posedge hClk)
468
+ begin
469
+ hValidCorrected <= hValid;
470
+ hHsyncCorrected <= hHsync;
471
+ hVsyncCorrected <= hVsync;
472
+ hColorPixelCorrected <= ~hCorrectLCD ? {blue, green, red} : {blcdc, glcdc, rlcdc};
473
+ hColorPixelUVCCorrected <= ~hCorrectUVC ? {blue, green, red} : {b10[9:4], g8[7:2], r10[9:4]};
474
+ end
475
+
476
+ endmodule
ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/vid_system_top.v ADDED
@@ -0,0 +1,484 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ // vid_system_top.v
2
+
3
+ module vid_system_top #(parameter ISSIMU=0)
4
+ (
5
+ input gClk,
6
+ input hClk,
7
+ input pClk,
8
+ input reset,
9
+
10
+ input BTN_MENU,
11
+ output reg slideOutActive,
12
+
13
+ output [5:0] LCD_DB,
14
+ output LCD_ENABLE_UVC,
15
+ output [17:0] LCD_DB_UVC,
16
+ output LCD_DOTCLK,
17
+ output LCD_ENABLE,
18
+ output LCD_HSYNC,
19
+ output LCD_RESET,
20
+ output LCD_SPI_CSX,
21
+ output LCD_SPI_SCLK,
22
+ output LCD_SPI_SDA,
23
+ input LCD_TE,
24
+ input LCD_EN,
25
+ output LCD_GENLOCK,
26
+ output LCD_VSYNC,
27
+
28
+ input frameBlendEnable,
29
+ input colorCorrectionEnableLCD,
30
+ input colorCorrectionEnableUVC,
31
+ input voltageLow,
32
+ input [1:0] lowBattDispMode,
33
+ input showTimer,
34
+ input runTimer,
35
+ input resetTimer,
36
+ input gSecondEna,
37
+ input gPercentEna,
38
+ input [31:0] debug_system,
39
+ input debug_system_on,
40
+
41
+ output hGBNewLine,
42
+ output reg [22:0] hGBAddress,
43
+ output hGBWrite,
44
+ output [15:0] hGBData,
45
+
46
+ output hValid,
47
+ output hHsync,
48
+ output hVsync,
49
+ input [15:0] hWrBurstQ,
50
+ input [15:0] hWrBurstQ2,
51
+ output reg hDrawOSD,
52
+
53
+ output LCD_INIT_DONE,
54
+ input gb_lcd_clkena,
55
+ input [14:0] gb_lcd_data,
56
+ input [1:0] gb_lcd_mode,
57
+ input gb_lcd_on,
58
+ input gb_lcd_vsync
59
+
60
+ );
61
+
62
+ ODDR u_ODDR(
63
+ .Q0(LCD_DOTCLK),
64
+ .Q1(),
65
+ .D0(1'd1),
66
+ .D1(1'd0),
67
+ .TX(1'd1),
68
+ .CLK(gClk)
69
+ );
70
+
71
+
72
+ ST7785_init #(ISSIMU)
73
+ u_ST7785_init(
74
+ .clk(pClk),
75
+ .reset(reset),
76
+ .LCD_CS(LCD_SPI_CSX),
77
+ .LCD_SCK(LCD_SPI_SCLK),
78
+ .LCD_SDA_SDI(LCD_SPI_SDA),
79
+ .LCD_RST(LCD_RESET),
80
+ .LCD_INIT_DONE(LCD_INIT_DONE)
81
+ );
82
+
83
+ wire [14:0] hColorPixel;
84
+ assign hHsync = gb_lcd_mode[1];
85
+ assign hVsync = gb_lcd_vsync;
86
+
87
+
88
+ reg hHsync_r1;
89
+ reg hVsync_r1;
90
+ always@(posedge hClk)
91
+ begin
92
+ hHsync_r1 <= hHsync;
93
+ hVsync_r1 <= hVsync;
94
+ end
95
+
96
+ reg hGBFrameBufferNum;
97
+ always@(posedge hClk)
98
+ begin
99
+ if(hVsync&~hVsync_r1)
100
+ begin
101
+ hGBAddress <= 23'h10000;
102
+ end
103
+ else
104
+ if(hGBNewLine&~hVsync)
105
+ hGBAddress <= hGBAddress + 'd320;
106
+ end
107
+
108
+ assign hGBWrite = gb_lcd_clkena;
109
+ assign hGBNewLine = ~hHsync&hHsync_r1;
110
+ assign hGBData = {1'd0, gb_lcd_data[14:0]};
111
+
112
+ reg [7:0] screenX;
113
+ reg [7:0] screenY;
114
+ always@(posedge hClk) begin
115
+ if (hHsync&~hHsync_r1) begin
116
+ screenX <= 8'd0;
117
+ screenY <= screenY + 1'd1;
118
+ end else if (gb_lcd_clkena) begin
119
+ screenX <= screenX + 1'd1;
120
+ end
121
+
122
+ if(hVsync&~hVsync_r1) begin
123
+ hDrawOSD <= ~BTN_MENU;
124
+ screenY <= 8'd0;
125
+ end
126
+ end
127
+
128
+ /* 50% blend
129
+ wire [6:0] sum_r = {hWrBurstQ[4:0],1'd0} + {gb_lcd_data[4:0],1'd0};
130
+ wire [6:0] sum_g = {hWrBurstQ[9:5],1'd0} + {gb_lcd_data[9:5],1'd0};
131
+ wire [6:0] sum_b = {hWrBurstQ[14:10],1'd0} + {gb_lcd_data[14:10],1'd0};
132
+ */
133
+ /* 25% blend
134
+ */
135
+ wire [6:0] sum_r = hWrBurstQ[4:0] + {gb_lcd_data[4:0],1'd0} + gb_lcd_data[4:0];
136
+ wire [6:0] sum_g = hWrBurstQ[9:5] + {gb_lcd_data[9:5],1'd0} + gb_lcd_data[9:5];
137
+ wire [6:0] sum_b = hWrBurstQ[14:10] + {gb_lcd_data[14:10],1'd0} + gb_lcd_data[14:10];
138
+ /* 12.5% blend
139
+ */
140
+ wire [5:0] game_r = frameBlendEnable ? sum_r[6:1] : {gb_lcd_data[4:0],1'b0};
141
+ wire [5:0] game_g = frameBlendEnable ? sum_g[6:1] : {gb_lcd_data[9:5],1'b0};
142
+ wire [5:0] game_b = frameBlendEnable ? sum_b[6:1] : {gb_lcd_data[14:10],1'b0};
143
+
144
+ wire [17:0] psel = {game_b,game_g,game_r};
145
+
146
+ // OSD and overlay
147
+ reg [17:0] overlayColor;
148
+ reg overlayActive;
149
+ reg overlayCrush;
150
+
151
+ wire overlayActive_batteryFront;
152
+ wire overlayActive_batteryBack;
153
+ wire overlayActive_TimerFront;
154
+ wire overlayActive_TimerBack;
155
+ wire overlayActive_TimerNumber;
156
+ wire overlayActive_debug;
157
+
158
+ overlayBatteryFront u_overlayBatteryFront
159
+ (
160
+ .screenX (screenX),
161
+ .screenY (screenY),
162
+ .overlayActive (overlayActive_batteryFront)
163
+ );
164
+
165
+ overlayBatteryBack u_overlayBatteryBack
166
+ (
167
+ .screenX (screenX),
168
+ .screenY (screenY),
169
+ .overlayActive (overlayActive_batteryBack)
170
+ );
171
+
172
+ overlayTimerFront u_overlayTimerFront
173
+ (
174
+ .screenX (screenX),
175
+ .screenY (screenY),
176
+ .overlayActive (overlayActive_TimerFront)
177
+ );
178
+
179
+ overlayTimerBack u_overlayTimerBack
180
+ (
181
+ .screenX (screenX),
182
+ .screenY (screenY),
183
+ .overlayActive (overlayActive_TimerBack)
184
+ );
185
+
186
+ reg [3:0] timePL = 4'd0;
187
+ reg [3:0] timePH = 4'd0;
188
+ reg [3:0] timeSL = 4'd0;
189
+ reg [3:0] timeSH = 4'd0;
190
+ reg [3:0] timeML = 4'd0;
191
+ reg [3:0] timeMH = 4'd0;
192
+ reg [3:0] timeHL = 4'd0;
193
+
194
+ // Flash the low battery indicator when configured
195
+ localparam LB_VIS_SHOW = 2'b00;
196
+ localparam LB_VIS_BLINK = 2'b01;
197
+ localparam LB_VIS_HIDE = 2'b10;
198
+ localparam LB_VIS_RSVD = 2'b11;
199
+
200
+ typedef enum reg {
201
+ LBB_HIDE = 1'b0,
202
+ LBB_SHOW = 1'b1
203
+ } low_batt_blink_state_t;
204
+
205
+ low_batt_blink_state_t LBBState = LBB_HIDE;
206
+ reg showLowBatt = 0;
207
+
208
+ always@(posedge gClk) begin
209
+ if (runTimer && gPercentEna) begin
210
+ if (timePL == 4'd9) begin
211
+ timePH <= timePH + 1'd1;
212
+ timePL <= 4'd0;
213
+ end else begin
214
+ timePL <= timePL + 1'd1;
215
+ end
216
+ end
217
+
218
+ if (runTimer && gSecondEna) begin
219
+ timePL <= 4'd0;
220
+ timePH <= 4'd0;
221
+ if (timeSL == 4'd9) begin
222
+ timeSL <= 4'd0;
223
+ if (timeSH == 4'd5) begin
224
+ timeSH <= 4'd0;
225
+ if (timeML == 4'd9) begin
226
+ timeML <= 4'd0;
227
+ if (timeMH == 4'd5) begin
228
+ timeMH <= 4'd0;
229
+ if (timeHL == 4'd9) begin
230
+ timePL <= 4'd9;
231
+ timePH <= 4'd9;
232
+ timeSL <= 4'd9;
233
+ timeSH <= 4'd5;
234
+ timeML <= 4'd9;
235
+ timeMH <= 4'd5;
236
+ timeHL <= 4'd9;
237
+ end else begin
238
+ timeHL <= timeHL + 1'd1;
239
+ end
240
+ end else begin
241
+ timeMH <= timeMH + 1'd1;
242
+ end
243
+ end else begin
244
+ timeML <= timeML + 1'd1;
245
+ end
246
+ end else begin
247
+ timeSH <= timeSH + 1'd1;
248
+ end
249
+ end else begin
250
+ timeSL <= timeSL + 1'd1;
251
+ end
252
+ end
253
+
254
+ if (resetTimer) begin
255
+ timePL <= 4'd0;
256
+ timePH <= 4'd0;
257
+ timeSL <= 4'd0;
258
+ timeSH <= 4'd0;
259
+ timeML <= 4'd0;
260
+ timeMH <= 4'd0;
261
+ timeHL <= 4'd0;
262
+ end
263
+
264
+ if ( lowBattDispMode == LB_VIS_BLINK ) begin
265
+ if (gSecondEna == 1) begin
266
+ case (LBBState)
267
+ LBB_HIDE: begin
268
+ LBBState <= LBB_SHOW;
269
+ end
270
+
271
+ LBB_SHOW: begin
272
+ LBBState <= LBB_HIDE;
273
+ end
274
+ endcase
275
+ end
276
+
277
+ showLowBatt <= (LBBState == LBB_SHOW);
278
+ end else if ( lowBattDispMode == LB_VIS_HIDE ) begin
279
+ LBBState <= LBB_HIDE;
280
+ showLowBatt <= 0;
281
+ end else begin
282
+ LBBState <= LBB_HIDE;
283
+ showLowBatt <= ((lowBattDispMode == LB_VIS_SHOW) || (lowBattDispMode == LB_VIS_RSVD));
284
+ end
285
+
286
+
287
+ end
288
+
289
+ wire [1:0] screenXNumber = (screenX >= 4 && screenX <= 6) ? (screenX - 4) :
290
+ (screenX >= 8 && screenX <= 8) ? (screenX - 8) :
291
+ (screenX >= 10 && screenX <= 13) ? (screenX - 10) :
292
+ (screenX >= 14 && screenX <= 17) ? (screenX - 14) :
293
+ (screenX >= 18 && screenX <= 18) ? (screenX - 18) :
294
+ (screenX >= 20 && screenX <= 23) ? (screenX - 20) :
295
+ (screenX >= 24 && screenX <= 27) ? (screenX - 24) :
296
+ (screenX >= 28 && screenX <= 28) ? (screenX - 28) :
297
+ (screenX >= 30 && screenX <= 33) ? (screenX - 30) :
298
+ (screenX >= 34 && screenX <= 37) ? (screenX - 34) :
299
+ 2'd3;
300
+
301
+ wire [2:0] screenYNumber = (screenY >= 8 && screenY <= 12) ? (screenY - 8) :
302
+ 3'd7;
303
+
304
+ wire [3:0] screenNumber = (screenX >= 4 && screenX <= 6) ? timeHL :
305
+ (screenX >= 8 && screenX <= 8) ? 4'd10 :
306
+ (screenX >= 10 && screenX <= 13) ? timeMH :
307
+ (screenX >= 14 && screenX <= 17) ? timeML :
308
+ (screenX >= 18 && screenX <= 18) ? 4'd10 :
309
+ (screenX >= 20 && screenX <= 23) ? timeSH :
310
+ (screenX >= 24 && screenX <= 27) ? timeSL :
311
+ (screenX >= 28 && screenX <= 28) ? 4'd11 :
312
+ (screenX >= 30 && screenX <= 33) ? timePH :
313
+ (screenX >= 34 && screenX <= 37) ? timePL :
314
+ 4'd15;
315
+
316
+ overlayTimerNumber u_overlayTimerNumber
317
+ (
318
+ .screenX (screenXNumber),
319
+ .screenY (screenYNumber),
320
+ .number (screenNumber),
321
+ .overlayActive (overlayActive_TimerNumber)
322
+ );
323
+
324
+
325
+
326
+ wire [1:0] debugXNumber = (screenX >= 0 && screenX <= 3) ? (screenX - 0) :
327
+ (screenX >= 4 && screenX <= 7) ? (screenX - 4) :
328
+ (screenX >= 8 && screenX <= 11) ? (screenX - 8) :
329
+ (screenX >= 12 && screenX <= 15) ? (screenX - 12) :
330
+ (screenX >= 16 && screenX <= 19) ? (screenX - 16) :
331
+ (screenX >= 20 && screenX <= 23) ? (screenX - 20) :
332
+ (screenX >= 24 && screenX <= 27) ? (screenX - 24) :
333
+ (screenX >= 28 && screenX <= 31) ? (screenX - 28) :
334
+ 2'd3;
335
+
336
+ wire [2:0] debugYNumber = (screenY >= 136) ? (screenY - 136) :
337
+ 3'd7;
338
+
339
+ wire [3:0] debugNumber = (screenX >= 0 && screenX <= 3) ? debug_system[31:28] :
340
+ (screenX >= 4 && screenX <= 7) ? debug_system[27:24] :
341
+ (screenX >= 8 && screenX <= 11) ? debug_system[23:20] :
342
+ (screenX >= 12 && screenX <= 15) ? debug_system[19:16] :
343
+ (screenX >= 16 && screenX <= 19) ? debug_system[15:12] :
344
+ (screenX >= 20 && screenX <= 23) ? debug_system[11: 8] :
345
+ (screenX >= 24 && screenX <= 27) ? debug_system[ 7: 4] :
346
+ (screenX >= 28 && screenX <= 31) ? debug_system[ 3: 0] :
347
+ 4'd15;
348
+
349
+ overlayDebug u_overlayDebug
350
+ (
351
+ .screenX (debugXNumber),
352
+ .screenY (debugYNumber),
353
+ .number (debugNumber),
354
+ .overlayActive (overlayActive_debug)
355
+ );
356
+
357
+
358
+ wire osdTransparent = (hWrBurstQ2 == 16'hF81F) ? 1'd1 : 1'd0;
359
+
360
+ always@(posedge hClk)
361
+ begin
362
+ overlayColor <= {hWrBurstQ2[4:0],hWrBurstQ2[0],hWrBurstQ2[10:6],hWrBurstQ2[6],hWrBurstQ2[15:11],hWrBurstQ2[11]};
363
+ overlayActive <= hDrawOSD & ~osdTransparent;
364
+ overlayCrush <= hDrawOSD & osdTransparent;
365
+
366
+ if (~hDrawOSD) begin
367
+ if (debug_system_on && overlayActive_debug) begin
368
+ overlayColor <= {6'h00, 6'h00, 6'h00}; // black
369
+ overlayActive <= 1'b1;
370
+ end else if (debug_system_on && screenX <= 31 && screenY >= 136) begin
371
+ overlayColor <= {6'h3F, 6'h3F, 6'h3F}; // white
372
+ overlayActive <= 1'b1;
373
+ end else if (voltageLow && showLowBatt && overlayActive_batteryFront) begin
374
+ overlayColor <= {6'h00, 6'h00, 6'h3F}; // red
375
+ overlayActive <= 1'b1;
376
+ end else if (showTimer && (overlayActive_TimerFront || overlayActive_TimerNumber)) begin
377
+ overlayColor <= {6'h3F, 6'h3F, 6'h3F}; // white
378
+ overlayActive <= 1'b1;
379
+ end else if ((voltageLow && showLowBatt && overlayActive_batteryBack) || (showTimer && overlayActive_TimerBack)) begin
380
+ overlayCrush <= 1'b1;
381
+ end
382
+ end
383
+ end
384
+
385
+ // High = Blue
386
+ // Mid = Green
387
+ // LSBs == Red
388
+
389
+ wire hValidCorrected;
390
+ wire hHsyncCorrected;
391
+ wire hVsyncCorrected;
392
+ wire [17:0] hColorPixelCorrected;
393
+ wire [17:0] hColorPixelUVCCorrected;
394
+
395
+ color_correction u_color_correction(
396
+ .hClk(hClk),
397
+ .hValid(gb_lcd_clkena),
398
+ .hHsync(gb_lcd_mode[1]),
399
+ .hVsync(gb_lcd_vsync),
400
+ .hCorrectLCD(colorCorrectionEnableLCD),
401
+ .hCorrectUVC(colorCorrectionEnableUVC),
402
+ .hColorPixel(psel),
403
+ .hValidCorrected(hValidCorrected),
404
+ .hHsyncCorrected(hHsyncCorrected),
405
+ .hVsyncCorrected(hVsyncCorrected),
406
+ .hColorPixelCorrected(hColorPixelCorrected),
407
+ .hColorPixelUVCCorrected(hColorPixelUVCCorrected)
408
+ );
409
+
410
+ wire [17:0] hColorPixelLCD = overlayCrush ? {2'd0,hColorPixelCorrected[17:14],2'd0,hColorPixelCorrected[11:8],2'd0,hColorPixelCorrected[5:2]} :
411
+ overlayActive ? overlayColor : hColorPixelCorrected;
412
+
413
+ wire [17:0] hColorPixelUVC = overlayCrush ? {2'd0,hColorPixelUVCCorrected[17:14],2'd0,hColorPixelUVCCorrected[11:8],2'd0,hColorPixelUVCCorrected[5:2]} :
414
+ overlayActive ? overlayColor : hColorPixelUVCCorrected;
415
+
416
+ ST7785_panel_master u_ST7785_panel_master(
417
+ .gClk(gClk),
418
+ .nRST(LCD_INIT_DONE),
419
+ .hClk(hClk),
420
+ .hValid(hValidCorrected),
421
+ .hHsync(hHsyncCorrected),
422
+ .hVsync(hVsyncCorrected),
423
+ .hColorPixel(hColorPixelLCD),
424
+ .hColorPixelUVC(hColorPixelUVC),
425
+
426
+ .lcd_on(gb_lcd_on),
427
+ .LCD_EN(LCD_EN),
428
+ .LCD_DE(LCD_ENABLE),
429
+ .LCD_HSYNC(LCD_HSYNC),
430
+ .LCD_VSYNC(LCD_VSYNC),
431
+ .LCD_GENLOCK(LCD_GENLOCK),
432
+ .LCD_DB(LCD_DB),
433
+ .LCD_ENABLE_UVC(LCD_ENABLE_UVC),
434
+ .LCD_DB_UVC(LCD_DB_UVC)
435
+ );
436
+
437
+ endmodule
438
+
439
+ module color_correction(
440
+ input hClk,
441
+
442
+ input hCorrectLCD,
443
+ input hCorrectUVC,
444
+
445
+ input hValid,
446
+ input hHsync,
447
+ input hVsync,
448
+ input [17:0] hColorPixel,
449
+
450
+ output reg hValidCorrected,
451
+ output reg hHsyncCorrected,
452
+ output reg hVsyncCorrected,
453
+ output reg [17:0] hColorPixelCorrected,
454
+ output reg [17:0] hColorPixelUVCCorrected
455
+ );
456
+
457
+ wire [5:0] red = hColorPixel[5:0];
458
+ wire [5:0] green = hColorPixel[11:6];
459
+ wire [5:0] blue = hColorPixel[17:12];
460
+
461
+ wire [9:0] r10 = (red * 'd13) + (green * 'd2) + blue; // 999
462
+ wire [7:0] g8 = (green * 'd3) + blue; // 252
463
+ wire [9:0] b10 = (red * 'd3) + (green * 'd2) + (blue * 'd11); // 1008
464
+
465
+ wire [15:0] rlcd1 = red[5:1] * 'd216 + green[5:1] * 'd30;
466
+ wire [15:0] rlcd2 = blue[5:1] * 'd25;
467
+ wire [15:0] rlcd3 = ( rlcd1 < rlcd2 ) ? 'd0 : rlcd1 - rlcd2;
468
+ wire [15:0] glcd = red[5:1] * 'd39 + green[5:1] * 'd137 + blue[5:1] * 'd24;//620 + 1054 + 217 = 1891
469
+ wire [15:0] blcd = red[5:1] * 'd21 + green[5:1] * 'd24 + blue[5:1] * 'd125;//620 + 1054 + 217 = 1891
470
+
471
+ wire [5:0] blcdc = blcd[13] ? 6'h3F : blcd[12:7];
472
+ wire [5:0] glcdc = glcd[13] ? 6'h3F : glcd[12:7];
473
+ wire [5:0] rlcdc = rlcd3[13] ? 6'h3F : rlcd3[12:7];
474
+
475
+ always@(posedge hClk)
476
+ begin
477
+ hValidCorrected <= hValid;
478
+ hHsyncCorrected <= hHsync;
479
+ hVsyncCorrected <= hVsync;
480
+ hColorPixelCorrected <= ~hCorrectLCD ? {blue, green, red} : {blcdc, glcdc, rlcdc};
481
+ hColorPixelUVCCorrected <= ~hCorrectUVC ? {blue, green, red} : {b10[9:4], g8[7:2], r10[9:4]};
482
+ end
483
+
484
+ endmodule
ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/BSP/vid_tpg.v ADDED
@@ -0,0 +1,69 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ // vid_tpg.v
2
+
3
+ module vid_tpg(
4
+ input hclk,
5
+ input reset,
6
+ output reg [14:0] color_pixel,
7
+ output reg vs,
8
+ output reg hs,
9
+ output reg valid,
10
+
11
+ output reg hGBNewLine,
12
+ output reg [22:0] hGBAddress,
13
+ output reg hGBWrite
14
+ );
15
+
16
+ reg [11:0] xcounter;
17
+ reg [11:0] ycounter;
18
+ reg [1:0] frameCnt;
19
+
20
+ always@(posedge hclk) begin : Timing
21
+ hGBWrite <= 1'b0;
22
+ hGBNewLine <= 1'b0;
23
+
24
+ if(reset)
25
+ begin
26
+ xcounter <= 'd0;
27
+ ycounter <= 'd0;
28
+ frameCnt <= 'd0;
29
+ end
30
+ else
31
+ begin
32
+ if(xcounter < 1824-1)
33
+ xcounter <= xcounter + 1'd1;
34
+ else
35
+ begin
36
+ hGBAddress <= hGBAddress + 320;
37
+ xcounter <= 'd0;
38
+ if(ycounter < 154)
39
+ ycounter <= ycounter + 1'd1;
40
+ else begin
41
+ ycounter <= 'd0;
42
+ frameCnt <= frameCnt + 1;
43
+ if (frameCnt == 2) frameCnt <= 'd0;
44
+ hGBAddress <= 23'h010000;
45
+ end
46
+ end
47
+ end
48
+
49
+ if (valid)
50
+ hGBWrite <= 1'b1;
51
+
52
+ if (xcounter == 640 && ycounter < 144)
53
+ hGBNewLine <= 1'b1;
54
+ end
55
+
56
+ always@(posedge hclk)
57
+ begin
58
+ case (frameCnt)
59
+ 0 : color_pixel <= {5'b0, 5'b0, ycounter[4:0]};//gb_lcd_data;
60
+ 1 : color_pixel <= {5'b0, ycounter[4:0], 5'b0};//gb_lcd_data;
61
+ 2 : color_pixel <= {ycounter[4:0], 5'b0, 5'b0};//gb_lcd_data;
62
+ endcase
63
+
64
+ vs <= ycounter == 12'd153;//gb_lcd_vsync;
65
+ hs <= xcounter < 1006;//gb_lcd_mode[1];
66
+ valid <= (xcounter >= 1) && (xcounter <= 640) && xcounter[0] && xcounter[1] && (ycounter < 144);//gb_lcd_clkena;
67
+ end
68
+
69
+ endmodule
ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/EMU/CORE/BootROMs/README.md ADDED
@@ -0,0 +1,9 @@
 
 
 
 
 
 
 
 
 
 
1
+ # Building the BootROM
2
+
3
+ 1. Install RGBDS v0.6 (see https://rgbds.gbdev.io/)
4
+
5
+ 2. Ensure that RGBDS is on your path.
6
+
7
+ 3. Run `make && make bootroms && make clean`
8
+
9
+ Note: The BootROM is restricted to 2048 bytes to limit impact on BlockRAM.
ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/EMU/CORE/BootROMs/cgb_boot_hex.txt ADDED
@@ -0,0 +1,128 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ 31 FE FF CD B4 04 26 FE 0E A0 22 0D 20 FC 0E 10
2
+ 21 30 FF 22 2F 0D 20 FB E0 C1 E0 80 3E 80 E0 26
3
+ E0 11 3E F3 E0 12 E0 25 3E 77 E0 24 3E FC E0 47
4
+ 11 04 01 21 10 80 1A 47 CD 88 04 13 7B FE 34 20
5
+ F5 CD 1D 05 3E 01 E0 4F CD B4 04 CD 64 07 CC E1
6
+ 04 06 03 21 C2 98 16 03 3E 08 0E 10 CD 7B 00 82
7
+ 0D 20 F9 D6 2F D5 11 10 00 19 D1 05 20 EC 15 28
8
+ 17 15 3E 37 2E A7 01 01 01 18 E1 F5 3E 01 E0 4F
9
+ 36 08 AF E0 4F F1 22 C9 11 76 04 0E 08 21 81 FF
10
+ AF 2F 22 22 CD 69 07 1A 13 22 1A 13 22 AF 22 22
11
+ 22 22 0D 20 EC CD 80 06 3E 91 E0 40 CD 64 07 28
12
+ 0C 3E 83 CD B3 04 06 05 CD AC 04 18 24 CD 2A 05
13
+ 3E 01 E0 C2 06 01 CD AC 04 3E 83 CD B3 04 06 05
14
+ CD AC 04 3E C1 CD B3 04 CD A4 06 21 C2 FF 35 20
15
+ F7 CD 53 05 CD 5F 07 28 01 04 3E 11 18 10 D0 00
16
+ 98 A0 12 D0 00 80 00 40 00 00 00 00 00 00 E0 50
17
+ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
18
+ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
19
+ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
20
+ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
21
+ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
22
+ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
23
+ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
24
+ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
25
+ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
26
+ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
27
+ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
28
+ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
29
+ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
30
+ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
31
+ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
32
+ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
33
+ 00 88 16 36 D1 DB F2 3C 8C 92 3D 5C 58 C9 3E 70
34
+ 1D 59 69 19 35 A8 14 AA 75 95 99 34 6F 15 FF 97
35
+ 4B 90 17 10 39 F7 F6 A2 49 4E 43 68 E0 8B F0 CE
36
+ 0C 29 E8 B7 86 9A 52 01 9D 71 9C BD 5D 6D 67 3F
37
+ 6B B3 46 28 A5 C6 D3 27 61 18 66 6A BF 0D F4 B3
38
+ 46 28 A5 C6 D3 27 61 18 66 6A BF 0D F4 B3 00 04
39
+ 05 23 22 03 1F 0F 0A 05 13 24 87 25 1E 2C 15 20
40
+ 1F 14 05 21 0D 0E 05 1D 05 12 09 03 02 1A 19 19
41
+ 29 2A 1A 2D 2A 2D 24 26 9A 2A 1E 29 22 22 05 2A
42
+ 06 05 21 19 2A 2A 28 02 10 19 2A 2A 05 00 27 24
43
+ 16 19 06 20 0C 24 0B 27 12 27 18 1F 32 11 2E 06
44
+ 1B 00 2F 29 29 00 00 13 22 17 12 1D 42 45 46 41
45
+ 41 52 42 45 4B 45 4B 20 52 2D 55 52 41 52 20 49
46
+ 4E 41 49 4C 49 43 45 20 52 20 20 E8 90 90 90 A0
47
+ A0 A0 C0 C0 C0 48 48 48 00 00 00 D8 D8 D8 28 28
48
+ 28 60 60 60 D0 D0 D0 80 40 40 20 E0 E0 20 10 10
49
+ 18 20 20 20 E8 E8 E0 20 E0 10 88 10 80 80 40 20
50
+ 20 38 20 20 90 20 20 A0 98 98 48 1E 1E 58 88 88
51
+ 10 20 20 10 20 20 18 E0 E0 00 18 18 00 00 00 08
52
+ 90 B0 90 A0 B0 A0 C0 B0 C0 80 B0 40 88 20 68 DE
53
+ 00 70 DE 20 78 98 B6 48 80 E0 50 20 B8 E0 88 B0
54
+ 10 20 00 10 20 E0 18 E0 18 00 18 E0 20 A8 E0 20
55
+ 18 E0 00 C8 18 E0 00 E0 40 20 18 E0 E0 18 30 20
56
+ E0 E8 FF 7F BF 32 D0 00 00 00 9F 63 79 42 B0 15
57
+ CB 04 FF 7F 31 6E 4A 45 00 00 FF 7F EF 1B 00 02
58
+ 00 00 FF 7F 1F 42 F2 1C 00 00 FF 7F 94 52 4A 29
59
+ 00 00 FF 7F FF 03 2F 01 00 00 FF 7F EF 03 D6 01
60
+ 00 00 FF 7F B5 42 C8 3D 00 00 74 7E FF 03 80 01
61
+ 00 00 FF 67 AC 77 13 1A 6B 2D D6 7E FF 4B 75 21
62
+ 00 00 FF 53 5F 4A 52 7E 00 00 FF 4F D2 7E 4C 3A
63
+ E0 1C ED 03 FF 7F 5F 25 00 00 6A 03 1F 02 FF 03
64
+ FF 7F FF 7F DF 01 12 01 00 00 1F 23 5F 03 F2 00
65
+ 09 00 FF 7F EA 03 1F 01 00 00 9F 29 1A 00 0C 00
66
+ 00 00 FF 7F 7F 02 1F 00 00 00 FF 7F E0 03 06 02
67
+ 20 01 FF 7F EB 7E 1F 00 00 7C FF 7F FF 3F 00 7E
68
+ 1F 00 FF 7F FF 03 1F 00 00 00 FF 03 1F 00 0C 00
69
+ 00 00 FF 7F 3F 03 93 01 00 00 00 00 00 42 7F 03
70
+ FF 7F FF 7F 8C 7E 00 7C 00 00 FF 7F EF 1B 80 61
71
+ 00 00 03 90 0F 18 00 78 81 09 12 15 54 93 3C 42
72
+ B9 A5 B9 A5 42 3C FF 7F 4F 77 C7 22 9F 03 7D 01
73
+ 1D 24 38 6D 00 55 60 6D CD 8B 04 3E 04 0E 00 CB
74
+ 20 F5 CB 11 F1 CB 11 3D 20 F5 79 22 23 22 23 C9
75
+ E5 21 0F FF CB 86 CB 46 28 FC E1 C9 CD A4 06 05
76
+ 20 FA C9 C9 21 00 80 AF 22 CB 6C 28 FA C9 CD C1
77
+ 04 1A A1 47 1C 1C 1A 1D 1D A1 CB 37 B0 CB 41 28
78
+ 02 CB 37 23 22 CB 31 C9 CD DB 04 CD BE 04 1C 7B
79
+ C9 11 00 00 21 80 80 1A 13 47 E6 0F 28 08 4F 1A
80
+ 22 23 13 0D 20 F9 CB 30 78 E6 0F 28 0A 4F 1A 13
81
+ 22 23 0D 20 FB 18 E0 11 04 01 0E F0 CD D8 04 C6
82
+ 16 5F CD D8 04 D6 16 5F FE 1C 20 EE 23 11 6E 04
83
+ 0E 08 1A 13 22 23 0D 20 F9 C9 3E 01 E0 4F 16 1A
84
+ 06 02 CD AC 04 21 C0 98 0E 03 7E FE 0F 28 05 34
85
+ E6 07 28 03 23 18 F3 7D F6 1F 6F 23 0D 20 EB 15
86
+ 20 DE C9 CD 64 07 28 05 3E C1 CD B3 04 06 20 0E
87
+ 20 21 81 FF C5 2A 5F 3A 57 01 21 04 7B E6 1F FE
88
+ 1F 20 01 0D 7B FE E0 38 09 7A E6 03 FE 03 20 02
89
+ CB A9 7A E6 7C FE 7C 20 02 CB 90 7B 81 22 7A 88
90
+ 22 C1 0D 20 CF CD 80 06 05 20 C4 3E 02 E0 70 21
91
+ 00 D0 CD B7 04 3C CD 94 06 CD 99 06 CD 94 06 AF
92
+ E0 70 2F E0 00 57 59 2E 0D FA 43 01 CB 7F CC D9
93
+ 05 CB 7F E0 4C F0 80 47 28 02 F0 C1 AF 4F 61 C9
94
+ 21 61 04 4F 06 00 09 7E C9 3E 01 E0 6C CD 04 06
95
+ CB 7F C4 47 07 CB BF 47 80 80 47 F0 C1 A7 28 05
96
+ CD D0 05 18 01 78 CD A0 04 CD 5B 06 3E 04 11 08
97
+ 00 2E 7C C9 21 4B 01 7E FE 33 28 05 3D 20 42 18
98
+ 0C 2E 44 2A FE 30 20 39 7E FE 31 20 34 2E 34 0E
99
+ 10 AF 86 2C 0D 20 FB E0 80 47 21 00 02 7D D6 5E
100
+ C8 2A B8 20 F8 7D D6 42 38 0E E5 7D C6 7A 6F 7E
101
+ E1 4F FA 37 01 B9 20 E5 7D C6 5D 6F 78 E0 80 7E
102
+ C9 AF C9 21 D9 02 06 00 4F 09 C9 CD 53 06 1E 00
103
+ 2A E5 21 72 03 4F 09 16 08 0E 6A CD 89 06 E1 CB
104
+ 5B 20 04 1E 08 18 E9 4E 21 72 03 09 16 08 18 05
105
+ 21 81 FF 16 40 1E 00 0E 68 3E 80 B3 E2 0C 2A E2
106
+ 15 20 FB C9 E0 4F 21 EE 00 0E 51 06 05 2A E2 0C
107
+ 05 20 FA C9 FA 43 01 CB 7F C0 3E 20 E0 00 F0 00
108
+ 2F E6 0F C8 2E 00 2C 1F 30 FC 3E 10 E0 00 F0 00
109
+ 2F 17 17 E6 0C 85 6F F0 C1 BD C8 7D E0 C1 C5 D5
110
+ CD D0 05 CD 53 06 2C 2C 4E 21 73 03 09 3A FE 7F
111
+ 20 02 23 23 F5 2A E5 21 81 FF CD 3D 07 2E 83 CD
112
+ 3D 07 E1 E0 87 2A E5 21 82 FF CD 3D 07 2E 84 CD
113
+ 3D 07 E1 E0 88 F1 28 02 23 23 F0 BB E6 DE 47 2A
114
+ E6 DE 80 47 FA BC FF CB 97 4E CB 91 89 1F EA BC
115
+ FF 78 1F EA BB FF 2D 2A E0 BF 2A E0 C0 2A E0 85
116
+ 2A E0 86 CD 80 06 3E 30 E0 C2 D1 C1 C9 11 08 00
117
+ 4B 77 19 0D 20 FB C9 F5 3E 19 EA 10 99 21 2F 99
118
+ 0E 0C 3D 28 08 32 0D 20 F9 2E 0F 18 F5 F1 C9 F0
119
+ 50 CB 47 C9 3E 02 CB 4F C9 E5 CD 5F 07 28 09 21
120
+ 84 04 7B BD 20 02 13 13 E1 C9 00 00 00 00 00 00
121
+ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
122
+ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
123
+ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
124
+ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
125
+ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
126
+ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
127
+ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
128
+ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/EMU/CORE/T80/GBse.vhd ADDED
@@ -0,0 +1,266 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ -- ****
2
+ -- T80(b) core. In an effort to merge and maintain bug fixes ....
3
+ --
4
+ --
5
+ -- Ver 300 started tidyup
6
+ -- MikeJ March 2005
7
+ -- Latest version from www.fpgaarcade.com (original www.opencores.org)
8
+ --
9
+ -- ****
10
+ --
11
+ -- Z80 compatible microprocessor core, synchronous top level with clock enable
12
+ -- Different timing than the original z80
13
+ -- Inputs needs to be synchronous and outputs may glitch
14
+ --
15
+ -- Version : 0240
16
+ --
17
+ -- Copyright (c) 2001-2002 Daniel Wallner (jesus@opencores.org)
18
+ --
19
+ -- All rights reserved
20
+ --
21
+ -- Redistribution and use in source and synthezised forms, with or without
22
+ -- modification, are permitted provided that the following conditions are met:
23
+ --
24
+ -- Redistributions of source code must retain the above copyright notice,
25
+ -- this list of conditions and the following disclaimer.
26
+ --
27
+ -- Redistributions in synthesized form must reproduce the above copyright
28
+ -- notice, this list of conditions and the following disclaimer in the
29
+ -- documentation and/or other materials provided with the distribution.
30
+ --
31
+ -- Neither the name of the author nor the names of other contributors may
32
+ -- be used to endorse or promote products derived from this software without
33
+ -- specific prior written permission.
34
+ --
35
+ -- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
36
+ -- AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
37
+ -- THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
38
+ -- PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE
39
+ -- LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
40
+ -- CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
41
+ -- SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
42
+ -- INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
43
+ -- CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
44
+ -- ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
45
+ -- POSSIBILITY OF SUCH DAMAGE.
46
+ --
47
+ -- Please report bugs to the author, but before you do so, please
48
+ -- make sure that this is not a derivative work and that
49
+ -- you have the latest version of this file.
50
+ --
51
+ -- The latest version of this file can be found at:
52
+ -- http://www.opencores.org/cvsweb.shtml/t80/
53
+ --
54
+ -- Limitations :
55
+ --
56
+ -- File history :
57
+ --
58
+ -- 0235 : First release
59
+ --
60
+ -- 0236 : Added T2Write generic
61
+ --
62
+ -- 0237 : Fixed T2Write with wait state
63
+ --
64
+ -- 0238 : Updated for T80 interface change
65
+ --
66
+ -- 0240 : Updated for T80 interface change
67
+ --
68
+ -- 0242 : Updated for T80 interface change
69
+ --
70
+ library IEEE;
71
+ use IEEE.std_logic_1164.all;
72
+ use IEEE.numeric_std.all;
73
+ use work.T80_Pack.all;
74
+
75
+ use work.pBus_savestates.all;
76
+ use work.pReg_savestates.all;
77
+
78
+ entity GBse is
79
+ generic(
80
+ T2Write : integer := 2; -- 0 => WR_n active in T3, 1 => WR_n active in T2, Other => WR_n active in T2+T3
81
+ IOWait : integer := 1 -- 0 => Single cycle I/O, 1 => Std I/O cycle
82
+ );
83
+ port(
84
+ RESET_n : in std_logic;
85
+ CLK_n : in std_logic;
86
+ CLKEN : in std_logic;
87
+ WAIT_n : in std_logic;
88
+ INT_n : in std_logic;
89
+ NMI_n : in std_logic;
90
+ BUSRQ_n : in std_logic;
91
+ M1_n : out std_logic;
92
+ MREQ_n : buffer std_logic;
93
+ IORQ_n : buffer std_logic;
94
+ RD_n : buffer std_logic;
95
+ WR_n : buffer std_logic;
96
+ RFSH_n : out std_logic;
97
+ HALT_n : out std_logic;
98
+ BUSAK_n : out std_logic;
99
+ STOP : out std_logic;
100
+ WRITE_CYCLE : out std_logic;
101
+ TSTATE1 : out std_logic;
102
+ TSTATE2 : out std_logic;
103
+ TSTATE3 : out std_logic;
104
+ TSTATE4 : out std_logic;
105
+ TSTATEo : out std_logic_vector(2 downto 0);
106
+ A : out std_logic_vector(15 downto 0);
107
+ DI : in std_logic_vector(7 downto 0);
108
+ DO : out std_logic_vector(7 downto 0);
109
+ isGBC : in std_logic; -- Gameboy Color
110
+ -- savestates
111
+ SaveStateBus_Din : in std_logic_vector(BUS_buswidth-1 downto 0);
112
+ SaveStateBus_Adr : in std_logic_vector(BUS_busadr-1 downto 0);
113
+ SaveStateBus_wren : in std_logic;
114
+ SaveStateBus_rst : in std_logic;
115
+ SaveStateBus_Dout : out std_logic_vector(BUS_buswidth-1 downto 0)
116
+ );
117
+ end GBse;
118
+
119
+ architecture rtl of GBse is
120
+
121
+ signal IntCycle_n : std_logic;
122
+ signal NoRead : std_logic;
123
+ signal Write : std_logic;
124
+ signal IORQ : std_logic;
125
+ signal DI_Reg : std_logic_vector(7 downto 0);
126
+ signal MCycle : std_logic_vector(2 downto 0);
127
+ signal TState : std_logic_vector(2 downto 0);
128
+
129
+ -- savestates
130
+ type t_reg_wired_or is array(0 to 1) of std_logic_vector(63 downto 0);
131
+ signal reg_wired_or : t_reg_wired_or;
132
+
133
+ signal SS_GBSE : std_logic_vector(REG_SAVESTATE_GBSE.upper downto REG_SAVESTATE_GBSE.lower);
134
+ signal SS_GBSE_BACK : std_logic_vector(REG_SAVESTATE_GBSE.upper downto REG_SAVESTATE_GBSE.lower);
135
+
136
+ begin
137
+
138
+ iREG_SAVESTATE_GBSE : entity work.eReg_Savestate generic map ( REG_SAVESTATE_GBSE ) port map (CLK_n, SaveStateBus_Din, SaveStateBus_Adr, SaveStateBus_wren, SaveStateBus_rst, reg_wired_or(0), SS_GBSE_BACK, SS_GBSE);
139
+ WRITE_CYCLE <= Write;
140
+ TSTATE1 <= '1' when TState = "001" else '0';
141
+ TSTATE2 <= '1' when TState = "010" else '0';
142
+ TSTATE3 <= '1' when TState = "011" else '0';
143
+ TSTATE4 <= '1' when TState = "100" else '0';
144
+ TSTATEo <= TState;
145
+ SS_GBSE_BACK(0) <= RD_n;
146
+ SS_GBSE_BACK(1) <= WR_n;
147
+ SS_GBSE_BACK(2) <= IORQ_n;
148
+ SS_GBSE_BACK(3) <= MREQ_n;
149
+ SS_GBSE_BACK(11 downto 4) <= DI_Reg;
150
+
151
+ process (reg_wired_or)
152
+ variable wired_or : std_logic_vector(63 downto 0);
153
+ begin
154
+ wired_or := reg_wired_or(0);
155
+ for i in 1 to (reg_wired_or'length - 1) loop
156
+ wired_or := wired_or or reg_wired_or(i);
157
+ end loop;
158
+ SaveStateBus_Dout <= wired_or;
159
+ end process;
160
+
161
+ u0 : T80
162
+ generic map
163
+ (
164
+ Mode => 3,
165
+ IOWait => IOWait,
166
+ Flag_S => 0,
167
+ Flag_P => 0,
168
+ Flag_X => 0,
169
+ Flag_Y => 0,
170
+ Flag_C => 4,
171
+ Flag_H => 5,
172
+ Flag_N => 6,
173
+ Flag_Z => 7
174
+ )
175
+ port map(
176
+ CEN => CLKEN,
177
+ M1_n => M1_n,
178
+ IORQ => IORQ,
179
+ NoRead => NoRead,
180
+ Write => Write,
181
+ RFSH_n => RFSH_n,
182
+ HALT_n => HALT_n,
183
+ Stop => STOP,
184
+ WAIT_n => Wait_n,
185
+ INT_n => INT_n,
186
+ NMI_n => NMI_n,
187
+ RESET_n => RESET_n,
188
+ BUSRQ_n => BUSRQ_n,
189
+ BUSAK_n => BUSAK_n,
190
+ CLK_n => CLK_n,
191
+ A => A,
192
+ DInst => DI,
193
+ DI => DI_Reg,
194
+ DO => DO,
195
+ MC => MCycle,
196
+ TS => TState,
197
+ IntCycle_n => IntCycle_n,
198
+ isGBC => isGBC,
199
+ -- savestates
200
+ SaveStateBus_Din => SaveStateBus_Din,
201
+ SaveStateBus_Adr => SaveStateBus_Adr,
202
+ SaveStateBus_wren => SaveStateBus_wren,
203
+ SaveStateBus_rst => SaveStateBus_rst,
204
+ SaveStateBus_Dout => reg_wired_or(1)
205
+ );
206
+
207
+ process (CLK_n)
208
+ begin
209
+ if CLK_n'event and CLK_n = '1' then
210
+ if RESET_n = '0' then
211
+ RD_n <= SS_GBSE(0); -- '1';
212
+ WR_n <= SS_GBSE(1); -- '1';
213
+ IORQ_n <= SS_GBSE(2); -- '1';
214
+ MREQ_n <= SS_GBSE(3); -- '1';
215
+ DI_Reg <= SS_GBSE(11 downto 4); -- "00000000";
216
+ elsif CLKEN = '1' then
217
+ RD_n <= '1';
218
+ WR_n <= '1';
219
+ IORQ_n <= '1';
220
+ MREQ_n <= '1';
221
+ if MCycle = "001" then
222
+ if TState = "001" or TState = "010" then
223
+ RD_n <= not IntCycle_n;
224
+ MREQ_n <= not IntCycle_n;
225
+ end if;
226
+ if TState = "011" then
227
+ MREQ_n <= '0';
228
+ end if;
229
+ elsif MCycle = "011" and IntCycle_n = '0' then
230
+ if TState = "010" then
231
+ IORQ_n <= '0'; -- Acknowledge IRQ
232
+ end if;
233
+ else
234
+ if (TState = "001" or TState = "010") and (NoRead = '0' and Write = '0') then
235
+ RD_n <= '0';
236
+ IORQ_n <= not IORQ;
237
+ MREQ_n <= IORQ;
238
+ end if;
239
+ if T2Write = 0 then
240
+ if TState = "010" and Write = '1' then
241
+ WR_n <= '0';
242
+ IORQ_n <= not IORQ;
243
+ MREQ_n <= IORQ;
244
+ end if;
245
+ elsif T2Write = 1 then
246
+ if (TState = "001" or (TState = "010" and Wait_n = '0')) and Write = '1' then
247
+ WR_n <= '0';
248
+ IORQ_n <= not IORQ;
249
+ MREQ_n <= IORQ;
250
+ end if;
251
+ else
252
+ if (TState = "001" or TState = "010") and Write = '1' then
253
+ WR_n <= '0';
254
+ IORQ_n <= not IORQ;
255
+ MREQ_n <= IORQ;
256
+ end if;
257
+ end if;
258
+ end if;
259
+ if TState = "011" and Wait_n = '1' then
260
+ DI_Reg <= DI;
261
+ end if;
262
+ end if;
263
+ end if;
264
+ end process;
265
+
266
+ end;
ModRetro_oss-chromatic-console-fpga/esp32t/src/rtl/EMU/CORE/T80/T80.vhd ADDED
@@ -0,0 +1,1341 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ -- ****
2
+ -- T80(b) core. In an effort to merge and maintain bug fixes ....
3
+ --
4
+ --
5
+ -- Ver 303 add undocumented DDCB and FDCB opcodes by TobiFlex 20.04.2010
6
+ -- Ver 302 fixed IO cycle timing, tested thanks to Alessandro.
7
+ -- Ver 301 parity flag is just parity for 8080, also overflow for Z80, by Sean Riddle
8
+ -- Ver 300 started tidyup. Rmoved some auto_wait bits from 0247 which caused problems
9
+ --
10
+ -- MikeJ March 2005
11
+ -- Latest version from www.fpgaarcade.com (original www.opencores.org)
12
+ --
13
+ -- ****
14
+ --
15
+ -- Z80 compatible microprocessor core
16
+ --
17
+ -- Version : 0247
18
+ --
19
+ -- Copyright (c) 2001-2002 Daniel Wallner (jesus@opencores.org)
20
+ --
21
+ -- All rights reserved
22
+ --
23
+ -- Redistribution and use in source and synthezised forms, with or without
24
+ -- modification, are permitted provided that the following conditions are met:
25
+ --
26
+ -- Redistributions of source code must retain the above copyright notice,
27
+ -- this list of conditions and the following disclaimer.
28
+ --
29
+ -- Redistributions in synthesized form must reproduce the above copyright
30
+ -- notice, this list of conditions and the following disclaimer in the
31
+ -- documentation and/or other materials provided with the distribution.
32
+ --
33
+ -- Neither the name of the author nor the names of other contributors may
34
+ -- be used to endorse or promote products derived from this software without
35
+ -- specific prior written permission.
36
+ --
37
+ -- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
38
+ -- AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
39
+ -- THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
40
+ -- PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE
41
+ -- LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
42
+ -- CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
43
+ -- SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
44
+ -- INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
45
+ -- CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
46
+ -- ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
47
+ -- POSSIBILITY OF SUCH DAMAGE.
48
+ --
49
+ -- Please report bugs to the author, but before you do so, please
50
+ -- make sure that this is not a derivative work and that
51
+ -- you have the latest version of this file.
52
+ --
53
+ -- The latest version of this file can be found at:
54
+ -- http://www.opencores.org/cvsweb.shtml/t80/
55
+ --
56
+ -- Limitations :
57
+ --
58
+ -- File history :
59
+ --
60
+ -- 0208 : First complete release
61
+ --
62
+ -- 0210 : Fixed wait and halt
63
+ --
64
+ -- 0211 : Fixed Refresh addition and IM 1
65
+ --
66
+ -- 0214 : Fixed mostly flags, only the block instructions now fail the zex regression test
67
+ --
68
+ -- 0232 : Removed refresh address output for Mode > 1 and added DJNZ M1_n fix by Mike Johnson
69
+ --
70
+ -- 0235 : Added clock enable and IM 2 fix by Mike Johnson
71
+ --
72
+ -- 0237 : Changed 8080 I/O address output, added IntE output
73
+ --
74
+ -- 0238 : Fixed (IX/IY+d) timing and 16 bit ADC and SBC zero flag
75
+ --
76
+ -- 0240 : Added interrupt ack fix by Mike Johnson, changed (IX/IY+d) timing and changed flags in GB mode
77
+ --
78
+ -- 0242 : Added I/O wait, fixed refresh address, moved some registers to RAM
79
+ --
80
+ -- 0247 : Fixed bus req/ack cycle
81
+ --
82
+
83
+ library IEEE;
84
+ use IEEE.std_logic_1164.all;
85
+ use IEEE.numeric_std.all;
86
+ use work.T80_Pack.all;
87
+
88
+ use work.pBus_savestates.all;
89
+ use work.pReg_savestates.all;
90
+
91
+ entity T80 is
92
+ generic(
93
+ Mode : integer := 0; -- 0 => Z80, 1 => Fast Z80, 2 => 8080, 3 => GB
94
+ IOWait : integer := 0; -- 1 => Single cycle I/O, 1 => Std I/O cycle
95
+ Flag_C : integer := 0;
96
+ Flag_N : integer := 1;
97
+ Flag_P : integer := 2;
98
+ Flag_X : integer := 3;
99
+ Flag_H : integer := 4;
100
+ Flag_Y : integer := 5;
101
+ Flag_Z : integer := 6;
102
+ Flag_S : integer := 7
103
+ );
104
+ port(
105
+ RESET_n : in std_logic;
106
+ CLK_n : in std_logic;
107
+ CEN : in std_logic;
108
+ WAIT_n : in std_logic;
109
+ INT_n : in std_logic;
110
+ NMI_n : in std_logic;
111
+ BUSRQ_n : in std_logic;
112
+ M1_n : buffer std_logic;
113
+ IORQ : out std_logic;
114
+ NoRead : out std_logic;
115
+ Write : out std_logic;
116
+ RFSH_n : buffer std_logic;
117
+ HALT_n : out std_logic;
118
+ BUSAK_n : out std_logic;
119
+ A : buffer std_logic_vector(15 downto 0);
120
+ DInst : in std_logic_vector(7 downto 0);
121
+ DI : in std_logic_vector(7 downto 0);
122
+ DO : buffer std_logic_vector(7 downto 0);
123
+ MC : out std_logic_vector(2 downto 0);
124
+ TS : out std_logic_vector(2 downto 0);
125
+ IntCycle_n : out std_logic;
126
+ IntE : out std_logic;
127
+ Stop : out std_logic;
128
+ isGBC : in std_logic := '0'; -- Gameboy Color
129
+ -- savestates
130
+ SaveStateBus_Din : in std_logic_vector(BUS_buswidth-1 downto 0);
131
+ SaveStateBus_Adr : in std_logic_vector(BUS_busadr-1 downto 0);
132
+ SaveStateBus_wren : in std_logic;
133
+ SaveStateBus_rst : in std_logic;
134
+ SaveStateBus_Dout : out std_logic_vector(BUS_buswidth-1 downto 0)
135
+ );
136
+ end T80;
137
+
138
+ architecture rtl of T80 is
139
+
140
+ -- Registers
141
+ signal ACC, F : std_logic_vector(7 downto 0);
142
+ signal Ap, Fp : std_logic_vector(7 downto 0);
143
+ signal I : std_logic_vector(7 downto 0);
144
+ signal R : unsigned(7 downto 0);
145
+ signal SP, PC : unsigned(15 downto 0);
146
+
147
+ signal RegDIH : std_logic_vector(7 downto 0);
148
+ signal RegDIL : std_logic_vector(7 downto 0);
149
+ signal RegBusA : std_logic_vector(15 downto 0);
150
+ signal RegBusB : std_logic_vector(15 downto 0);
151
+ signal RegBusC : std_logic_vector(15 downto 0);
152
+ signal RegAddrA_r : std_logic_vector(2 downto 0);
153
+ signal RegAddrA : std_logic_vector(2 downto 0);
154
+ signal RegAddrB_r : std_logic_vector(2 downto 0);
155
+ signal RegAddrB : std_logic_vector(2 downto 0);
156
+ signal RegAddrC : std_logic_vector(2 downto 0);
157
+ signal RegWEH : std_logic;
158
+ signal RegWEL : std_logic;
159
+ signal Alternate : std_logic;
160
+
161
+ -- Help Registers
162
+ signal TmpAddr : std_logic_vector(15 downto 0); -- Temporary address register
163
+ signal TmpAddr2 : std_logic_vector(15 downto 0); -- Temporary address register
164
+ signal IR : std_logic_vector(7 downto 0); -- Instruction register
165
+ signal IR_muxed : std_logic_vector(7 downto 0); -- Used for Mode = 3(GB) to sample IR in TState3 instead of TState2
166
+ signal ISet : std_logic_vector(1 downto 0); -- Instruction set selector
167
+ signal RegBusA_r : std_logic_vector(15 downto 0);
168
+
169
+ signal ID16 : signed(15 downto 0);
170
+ signal Save_Mux : std_logic_vector(7 downto 0);
171
+
172
+ signal TState : unsigned(2 downto 0);
173
+ signal MCycle : std_logic_vector(2 downto 0);
174
+ signal IntE_FF1 : std_logic;
175
+ signal IntE_FF2 : std_logic;
176
+ signal Halt_FF : std_logic;
177
+ signal BusReq_s : std_logic;
178
+ signal BusAck : std_logic;
179
+ signal ClkEn : std_logic;
180
+ signal NMI_s : std_logic;
181
+ signal OldNMI_n : std_logic;
182
+ signal INT_s : std_logic;
183
+ signal IStatus : std_logic_vector(1 downto 0);
184
+
185
+ signal DI_Reg : std_logic_vector(7 downto 0);
186
+ signal T_Res : std_logic;
187
+ signal XY_State : std_logic_vector(1 downto 0);
188
+ signal Pre_XY_F_M : std_logic_vector(2 downto 0);
189
+ signal NextIs_XY_Fetch : std_logic;
190
+ signal XY_Ind : std_logic;
191
+ signal No_BTR : std_logic;
192
+ signal BTR_r : std_logic;
193
+ signal Auto_Wait : std_logic;
194
+ signal Auto_Wait_t1 : std_logic;
195
+ signal Auto_Wait_t2 : std_logic;
196
+ signal IncDecZ : std_logic;
197
+
198
+ -- ALU signals
199
+ signal BusB : std_logic_vector(7 downto 0);
200
+ signal BusA : std_logic_vector(7 downto 0);
201
+ signal ALU_Q : std_logic_vector(7 downto 0);
202
+ signal F_Out : std_logic_vector(7 downto 0);
203
+
204
+ -- Registered micro code outputs
205
+ signal Read_To_Reg_r : std_logic_vector(4 downto 0);
206
+ signal Arith16_r : std_logic;
207
+ signal Z16_r : std_logic;
208
+ signal ALU_Op_r : std_logic_vector(3 downto 0);
209
+ signal Save_ALU_r : std_logic;
210
+ signal PreserveC_r : std_logic;
211
+ signal MCycles : std_logic_vector(2 downto 0);
212
+
213
+ -- Micro code outputs
214
+ signal MCycles_d : std_logic_vector(2 downto 0);
215
+ signal TStates : std_logic_vector(2 downto 0);
216
+ signal IntCycle : std_logic;
217
+ signal NMICycle : std_logic;
218
+ signal Inc_PC : std_logic;
219
+ signal Inc_WZ : std_logic;
220
+ signal IncDec_16 : std_logic_vector(3 downto 0);
221
+ signal Prefix : std_logic_vector(1 downto 0);
222
+ signal Read_To_Acc : std_logic;
223
+ signal Read_To_Reg : std_logic;
224
+ signal Set_BusB_To : std_logic_vector(3 downto 0);
225
+ signal Set_BusA_To : std_logic_vector(3 downto 0);
226
+ signal ALU_Op : std_logic_vector(3 downto 0);
227
+ signal Save_ALU : std_logic;
228
+ signal Rot_Akku : std_logic;
229
+ signal PreserveC : std_logic;
230
+ signal Arith16 : std_logic;
231
+ signal Set_Addr_To : std_logic_vector(2 downto 0);
232
+ signal Jump : std_logic;
233
+ signal JumpE : std_logic;
234
+ signal JumpXY : std_logic;
235
+ signal Call : std_logic;
236
+ signal RstP : std_logic;
237
+ signal LDZ : std_logic;
238
+ signal LDW : std_logic;
239
+ signal LDSPHL : std_logic;
240
+ signal LDHLSP : std_logic;
241
+ signal ADDSPdd : std_logic;
242
+ signal IORQ_i : std_logic;
243
+ signal Special_LD : std_logic_vector(2 downto 0);
244
+ signal ExchangeDH : std_logic;
245
+ signal ExchangeRp : std_logic;
246
+ signal ExchangeAF : std_logic;
247
+ signal ExchangeRS : std_logic;
248
+ signal I_DJNZ : std_logic;
249
+ signal I_CPL : std_logic;
250
+ signal I_CCF : std_logic;
251
+ signal I_SCF : std_logic;
252
+ signal I_RETN : std_logic;
253
+ signal I_BT : std_logic;
254
+ signal I_BC : std_logic;
255
+ signal I_BTR : std_logic;
256
+ signal I_RLD : std_logic;
257
+ signal I_RRD : std_logic;
258
+ signal I_INRC : std_logic;
259
+ signal SetDI : std_logic;
260
+ signal SetEI : std_logic;
261
+ signal IMode : std_logic_vector(1 downto 0);
262
+ signal Halt : std_logic;
263
+ signal XYbit_undoc : std_logic;
264
+
265
+ signal updateIR : std_logic; -- Used for Mode = 3(GB) to sample IR in TState3 instead of TState2
266
+
267
+ -- savestates
268
+ type t_reg_wired_or is array(0 to 4) of std_logic_vector(63 downto 0);
269
+ signal reg_wired_or : t_reg_wired_or;
270
+
271
+ signal SS_1 : std_logic_vector(REG_SAVESTATE_T80_1.upper downto REG_SAVESTATE_T80_1.lower);
272
+ signal SS_1_BACK : std_logic_vector(REG_SAVESTATE_T80_1.upper downto REG_SAVESTATE_T80_1.lower);
273
+ signal SS_2 : std_logic_vector(REG_SAVESTATE_T80_2.upper downto REG_SAVESTATE_T80_2.lower);
274
+ signal SS_2_BACK : std_logic_vector(REG_SAVESTATE_T80_2.upper downto REG_SAVESTATE_T80_2.lower);
275
+ signal SS_3 : std_logic_vector(REG_SAVESTATE_T80_3.upper downto REG_SAVESTATE_T80_3.lower);
276
+ signal SS_3_BACK : std_logic_vector(REG_SAVESTATE_T80_3.upper downto REG_SAVESTATE_T80_3.lower);
277
+ signal SS_4 : std_logic_vector(REG_SAVESTATE_T80_4.upper downto REG_SAVESTATE_T80_4.lower);
278
+ signal SS_4_BACK : std_logic_vector(REG_SAVESTATE_T80_4.upper downto REG_SAVESTATE_T80_4.lower);
279
+
280
+ begin
281
+
282
+ iREG_SAVESTATE_T80_1 : entity work.eReg_Savestate generic map ( REG_SAVESTATE_T80_1 ) port map (CLK_n, SaveStateBus_Din, SaveStateBus_Adr, SaveStateBus_wren, SaveStateBus_rst, reg_wired_or(1), SS_1_BACK, SS_1);
283
+ iREG_SAVESTATE_T80_2 : entity work.eReg_Savestate generic map ( REG_SAVESTATE_T80_2 ) port map (CLK_n, SaveStateBus_Din, SaveStateBus_Adr, SaveStateBus_wren, SaveStateBus_rst, reg_wired_or(2), SS_2_BACK, SS_2);
284
+ iREG_SAVESTATE_T80_3 : entity work.eReg_Savestate generic map ( REG_SAVESTATE_T80_3 ) port map (CLK_n, SaveStateBus_Din, SaveStateBus_Adr, SaveStateBus_wren, SaveStateBus_rst, reg_wired_or(3), SS_3_BACK, SS_3);
285
+ iREG_SAVESTATE_T80_4 : entity work.eReg_Savestate generic map ( REG_SAVESTATE_T80_4 ) port map (CLK_n, SaveStateBus_Din, SaveStateBus_Adr, SaveStateBus_wren, SaveStateBus_rst, reg_wired_or(4), SS_4_BACK, SS_4);
286
+
287
+ process (reg_wired_or)
288
+ variable wired_or : std_logic_vector(63 downto 0);
289
+ begin
290
+ wired_or := reg_wired_or(0);
291
+ for i in 1 to (reg_wired_or'length - 1) loop
292
+ wired_or := wired_or or reg_wired_or(i);
293
+ end loop;
294
+ SaveStateBus_Dout <= wired_or;
295
+ end process;
296
+
297
+ mcode : T80_MCode
298
+ generic map(
299
+ Mode => Mode,
300
+ Flag_C => Flag_C,
301
+ Flag_N => Flag_N,
302
+ Flag_P => Flag_P,
303
+ Flag_X => Flag_X,
304
+ Flag_H => Flag_H,
305
+ Flag_Y => Flag_Y,
306
+ Flag_Z => Flag_Z,
307
+ Flag_S => Flag_S)
308
+ port map(
309
+ IR => IR_muxed,
310
+ ISet => ISet,
311
+ MCycle => MCycle,
312
+ F => F,
313
+ NMICycle => NMICycle,
314
+ IntCycle => IntCycle,
315
+ XY_State => XY_State,
316
+ MCycles => MCycles_d,
317
+ TStates => TStates,
318
+ Prefix => Prefix,
319
+ Inc_PC => Inc_PC,
320
+ Inc_WZ => Inc_WZ,
321
+ IncDec_16 => IncDec_16,
322
+ Read_To_Acc => Read_To_Acc,
323
+ Read_To_Reg => Read_To_Reg,
324
+ Set_BusB_To => Set_BusB_To,
325
+ Set_BusA_To => Set_BusA_To,
326
+ ALU_Op => ALU_Op,
327
+ Save_ALU => Save_ALU,
328
+ Rot_Akku => Rot_Akku,
329
+ PreserveC => PreserveC,
330
+ Arith16 => Arith16,
331
+ Set_Addr_To => Set_Addr_To,
332
+ IORQ => IORQ_i,
333
+ Jump => Jump,
334
+ JumpE => JumpE,
335
+ JumpXY => JumpXY,
336
+ Call => Call,
337
+ RstP => RstP,
338
+ LDZ => LDZ,
339
+ LDW => LDW,
340
+ LDSPHL => LDSPHL,
341
+ LDHLSP => LDHLSP,
342
+ ADDSPdd => ADDSPdd,
343
+ Special_LD => Special_LD,
344
+ ExchangeDH => ExchangeDH,
345
+ ExchangeRp => ExchangeRp,
346
+ ExchangeAF => ExchangeAF,
347
+ ExchangeRS => ExchangeRS,
348
+ I_DJNZ => I_DJNZ,
349
+ I_CPL => I_CPL,
350
+ I_CCF => I_CCF,
351
+ I_SCF => I_SCF,
352
+ I_RETN => I_RETN,
353
+ I_BT => I_BT,
354
+ I_BC => I_BC,
355
+ I_BTR => I_BTR,
356
+ I_RLD => I_RLD,
357
+ I_RRD => I_RRD,
358
+ I_INRC => I_INRC,
359
+ SetDI => SetDI,
360
+ SetEI => SetEI,
361
+ IMode => IMode,
362
+ Halt => Halt,
363
+ NoRead => NoRead,
364
+ Write => Write,
365
+ XYbit_undoc => XYbit_undoc);
366
+
367
+ alu : T80_ALU
368
+ generic map(
369
+ Mode => Mode,
370
+ Flag_C => Flag_C,
371
+ Flag_N => Flag_N,
372
+ Flag_P => Flag_P,
373
+ Flag_X => Flag_X,
374
+ Flag_H => Flag_H,
375
+ Flag_Y => Flag_Y,
376
+ Flag_Z => Flag_Z,
377
+ Flag_S => Flag_S)
378
+ port map(
379
+ Arith16 => Arith16_r,
380
+ Z16 => Z16_r,
381
+ ALU_Op => ALU_Op_r,
382
+ Rot_Akku => Rot_Akku,
383
+ IR => IR_muxed(5 downto 0),
384
+ ISet => ISet,
385
+ BusA => BusA,
386
+ BusB => BusB,
387
+ F_In => F,
388
+ Q => ALU_Q,
389
+ F_Out => F_Out);
390
+
391
+ ClkEn <= CEN and not BusAck;
392
+
393
+ T_Res <= '1' when TState = unsigned(TStates) else '0';
394
+
395
+ NextIs_XY_Fetch <= '1' when XY_State /= "00" and XY_Ind = '0' and
396
+ ((Set_Addr_To = aXY) or
397
+ (MCycle = "001" and IR = "11001011") or
398
+ (MCycle = "001" and IR = "00110110")) else '0';
399
+
400
+ Save_Mux <= BusB when ExchangeRp = '1' else
401
+ DI_Reg when Save_ALU_r = '0' else
402
+ ALU_Q;
403
+
404
+
405
+ SS_1_BACK(15 downto 0) <= std_logic_vector(PC);
406
+ SS_1_BACK(31 downto 16) <= A ;
407
+ SS_1_BACK(47 downto 32) <= TmpAddr ;
408
+ SS_1_BACK(55 downto 48) <= IR ;
409
+ SS_1_BACK(57 downto 56) <= ISet ;
410
+ SS_1_BACK(59 downto 58) <= XY_State;
411
+ SS_1_BACK(61 downto 60) <= IStatus ;
412
+
413
+ SS_2_BACK( 7 downto 0) <= DO;
414
+ SS_2_BACK(15 downto 8) <= ACC;
415
+ SS_2_BACK(23 downto 16) <= Ap;
416
+ SS_2_BACK(31 downto 24) <= Fp;
417
+ SS_2_BACK(39 downto 32) <= I ;
418
+ SS_2_BACK(47 downto 40) <= std_logic_vector(R);
419
+ SS_2_BACK(50 downto 48) <= MCycles;
420
+
421
+ SS_3_BACK(15 downto 0) <= std_logic_vector(SP);
422
+ SS_3_BACK(20 downto 16) <= Read_To_Reg_r;
423
+ SS_3_BACK(28 downto 21) <= F ;
424
+ SS_3_BACK(29) <= Arith16_r ;
425
+ SS_3_BACK(30) <= BTR_r ;
426
+ SS_3_BACK(31) <= Z16_r ;
427
+ SS_3_BACK(35 downto 32) <= ALU_Op_r ;
428
+ SS_3_BACK(36) <= Save_ALU_r ;
429
+ SS_3_BACK(37) <= PreserveC_r ;
430
+ SS_3_BACK(38) <= XY_Ind ;
431
+
432
+ IR_muxed <= DInst when (updateIR = '1') else IR;
433
+
434
+ process (CLK_n)
435
+ variable temp_c : unsigned(8 downto 0);
436
+ variable temp_h : unsigned(4 downto 0);
437
+ begin
438
+ if CLK_n'event and CLK_n = '1' then
439
+ if RESET_n = '0' then
440
+
441
+ PC <= unsigned(SS_1(15 downto 0)); -- (others => '0'); -- Program Counter
442
+ A <= SS_1(31 downto 16); -- (others => '0');
443
+ TmpAddr <= SS_1(47 downto 32); -- (others => '0');
444
+ IR <= SS_1(55 downto 48); -- "00000000";
445
+ ISet <= SS_1(57 downto 56); -- "00";
446
+ XY_State <= SS_1(59 downto 58); -- "00";
447
+ IStatus <= SS_1(61 downto 60); -- "00";
448
+ MCycles <= SS_2(50 downto 48); -- "000";
449
+ DO <= SS_2( 7 downto 0); -- "00000000";
450
+
451
+ ACC <= SS_2(15 downto 8); -- (others => '0');
452
+ if Mode = 3 then -- this is what Gameboy should be using, but it's ignored because overwritten down below, why?
453
+ F <= "11110000";
454
+ else
455
+ F <= (others => '1');
456
+ end if;
457
+ Ap <= SS_2(23 downto 16); -- (others => '1');
458
+ Fp <= SS_2(31 downto 24); -- (others => '1');
459
+ I <= SS_2(39 downto 32); -- (others => '0');
460
+ R <= unsigned(SS_2(47 downto 40)); -- (others => '0');
461
+ SP <= unsigned(SS_3(15 downto 0)); -- (others => '1');
462
+ Alternate <= '0'; -- unused in gameboy
463
+
464
+ Read_To_Reg_r <= SS_3(20 downto 16); -- "00000";
465
+ F <= SS_3(28 downto 21); -- (others => '1');
466
+ Arith16_r <= SS_3(29); -- '0';
467
+ BTR_r <= SS_3(30); -- '0';
468
+ Z16_r <= SS_3(31); -- '0';
469
+ ALU_Op_r <= SS_3(35 downto 32); -- "0000";
470
+ Save_ALU_r <= SS_3(36); -- '0';
471
+ PreserveC_r <= SS_3(37); -- '0';
472
+ XY_Ind <= SS_3(38); -- '0';
473
+
474
+ updateIR <= '0';
475
+
476
+ elsif ClkEn = '1' then
477
+
478
+ updateIR <= '0';
479
+ if (updateIR = '1') then
480
+ IR <= DInst;
481
+ end if;
482
+
483
+ ALU_Op_r <= "0000";
484
+ Save_ALU_r <= '0';
485
+ Read_To_Reg_r <= "00000";
486
+
487
+ MCycles <= MCycles_d;
488
+
489
+ if LDHLSP = '1' and MCycle = "011" and TState = 1 then
490
+ temp_c := unsigned('0'&SP(7 downto 0))+unsigned('0'&Save_Mux);
491
+ temp_h := unsigned('0'&SP(3 downto 0))+unsigned('0'&Save_Mux(3 downto 0));
492
+ F(Flag_Z) <= '0';
493
+ F(Flag_N) <= '0';
494
+ F(Flag_H) <= temp_h(4);
495
+ F(Flag_C) <= temp_c(8);
496
+ end if;
497
+
498
+ if ADDSPdd = '1' and TState = 1 then
499
+ temp_c := unsigned('0'&SP(7 downto 0))+unsigned('0'&Save_Mux);
500
+ temp_h := unsigned('0'&SP(3 downto 0))+unsigned('0'&Save_Mux(3 downto 0));
501
+ F(Flag_Z) <= '0';
502
+ F(Flag_N) <= '0';
503
+ F(Flag_H) <= temp_h(4);
504
+ F(Flag_C) <= temp_c(8);
505
+ end if;
506
+
507
+ if Mode = 3 then
508
+ IStatus <= "10";
509
+ elsif IMode /= "11" then
510
+ IStatus <= IMode;
511
+ end if;
512
+
513
+ Arith16_r <= Arith16;
514
+ PreserveC_r <= PreserveC;
515
+ if ISet = "10" and ALU_OP(2) = '0' and ALU_OP(0) = '1' and MCycle = "011" then
516
+ Z16_r <= '1';
517
+ else
518
+ Z16_r <= '0';
519
+ end if;
520
+
521
+ if (MCycle /= "001" and TState = 2 and Wait_n = '1') or (MCycle = "001" and ((Mode = 3 and TState = 3) or (Mode /= 3 and TState = 4))) then
522
+ if IncDec_16(2 downto 0) = "111" then
523
+ if IncDec_16(3) = '1' then
524
+ SP <= SP - 1;
525
+ else
526
+ SP <= SP + 1;
527
+ end if;
528
+ end if;
529
+ end if;
530
+
531
+ if MCycle = "001" and TState(2) = '0' then
532
+ -- MCycle = 1 and TState = 1, 2, or 3
533
+
534
+ if TState = 2 and Wait_n = '1' then
535
+ if Mode < 2 then
536
+ A(7 downto 0) <= std_logic_vector(R);
537
+ A(15 downto 8) <= I;
538
+ R(6 downto 0) <= R(6 downto 0) + 1;
539
+ end if;
540
+
541
+ if Jump = '0' and Call = '0' and NMICycle = '0' and IntCycle = '0' and not (Halt_FF = '1' or Halt = '1')
542
+ and not (Mode = 3 and IntE_FF1 = '1' and INT_s = '1' and Prefix = "00") then --GB: Run NOP instead of instruction if INT_s is active here
543
+ PC <= PC + 1;
544
+ end if;
545
+
546
+ if IntCycle = '1' and IStatus = "01" then
547
+ IR <= "11111111";
548
+ elsif Halt_FF = '1' or (IntCycle = '1' and IStatus = "10") or NMICycle = '1'
549
+ or (Mode = 3 and IntE_FF1 = '1' and INT_s = '1' and Prefix = "00") then --GB: Run NOP instead of instruction if INT_s is active here
550
+ IR <= "00000000";
551
+ else
552
+ if Mode = 3 then
553
+ updateIR <= '1';
554
+ else
555
+ IR <= DInst;
556
+ end if;
557
+ end if;
558
+
559
+ ISet <= "00";
560
+ if Prefix /= "00" then
561
+ if Prefix = "11" then
562
+ if IR(5) = '1' then
563
+ XY_State <= "10";
564
+ else
565
+ XY_State <= "01";
566
+ end if;
567
+ else
568
+ if Prefix = "10" then
569
+ XY_State <= "00";
570
+ XY_Ind <= '0';
571
+ end if;
572
+ ISet <= Prefix;
573
+ end if;
574
+ else
575
+ XY_State <= "00";
576
+ XY_Ind <= '0';
577
+ end if;
578
+ end if;
579
+
580
+ else
581
+ -- either (MCycle > 1) OR (MCycle = 1 AND TState > 3)
582
+
583
+ if MCycle = "110" then
584
+ XY_Ind <= '1';
585
+ if Prefix = "01" then
586
+ ISet <= "01";
587
+ end if;
588
+ end if;
589
+
590
+ if T_Res = '1' then
591
+ BTR_r <= (I_BT or I_BC or I_BTR) and not No_BTR;
592
+ if Jump = '1' then
593
+ A(15 downto 8) <= DI_Reg;
594
+ A(7 downto 0) <= TmpAddr(7 downto 0);
595
+ PC(15 downto 8) <= unsigned(DI_Reg);
596
+ PC(7 downto 0) <= unsigned(TmpAddr(7 downto 0));
597
+ elsif JumpXY = '1' then
598
+ A <= RegBusC;
599
+ PC <= unsigned(RegBusC);
600
+ elsif Call = '1' or RstP = '1' then
601
+ A <= TmpAddr;
602
+ PC <= unsigned(TmpAddr);
603
+ elsif MCycle = MCycles and NMICycle = '1' then
604
+ A <= "0000000001100110";
605
+ PC <= "0000000001100110";
606
+ elsif ((Mode /= 3 and MCycle = "011") or (Mode = 3 and MCycle = "100"))
607
+ and IntCycle = '1' and IStatus = "10" then
608
+ A(15 downto 8) <= I;
609
+ A(7 downto 0) <= TmpAddr(7 downto 0);
610
+ PC(15 downto 8) <= unsigned(I);
611
+ PC(7 downto 0) <= unsigned(TmpAddr(7 downto 0));
612
+ else
613
+ case Set_Addr_To is
614
+ when aXY =>
615
+ if XY_State = "00" then
616
+ A <= RegBusC;
617
+ else
618
+ if NextIs_XY_Fetch = '1' then
619
+ A <= std_logic_vector(PC);
620
+ else
621
+ A <= TmpAddr;
622
+ end if;
623
+ end if;
624
+ when aIOA =>
625
+ if Mode = 3 then
626
+ -- Memory map I/O on GBZ80
627
+ A(15 downto 8) <= (others => '1');
628
+ elsif Mode = 2 then
629
+ -- Duplicate I/O address on 8080
630
+ A(15 downto 8) <= DI_Reg;
631
+ else
632
+ A(15 downto 8) <= ACC;
633
+ end if;
634
+ A(7 downto 0) <= DI_Reg;
635
+ when aSP =>
636
+ A <= std_logic_vector(SP);
637
+ when aBC =>
638
+ if Mode = 3 and IORQ_i = '1' then
639
+ -- Memory map I/O on GBZ80
640
+ A(15 downto 8) <= (others => '1');
641
+ A(7 downto 0) <= RegBusC(7 downto 0);
642
+ else
643
+ A <= RegBusC;
644
+ end if;
645
+ when aDE =>
646
+ A <= RegBusC;
647
+ when aZI =>
648
+ if Inc_WZ = '1' then
649
+ A <= std_logic_vector(unsigned(TmpAddr) + 1);
650
+ else
651
+ A(15 downto 8) <= DI_Reg;
652
+ A(7 downto 0) <= TmpAddr(7 downto 0);
653
+ end if;
654
+ when others =>
655
+ A <= std_logic_vector(PC);
656
+ end case;
657
+ end if;
658
+
659
+ Save_ALU_r <= Save_ALU;
660
+ ALU_Op_r <= ALU_Op;
661
+
662
+ if Mode = 3 then
663
+ if I_CPL = '1' then
664
+ -- CPL
665
+ ACC <= not ACC;
666
+ F(Flag_H) <= '1';
667
+ F(Flag_N) <= '1';
668
+ end if;
669
+ if I_CCF = '1' then
670
+ -- CCF
671
+ F(Flag_C) <= not F(Flag_C);
672
+ F(Flag_H) <= '0';
673
+ F(Flag_N) <= '0';
674
+ end if;
675
+ if I_SCF = '1' then
676
+ -- SCF
677
+ F(Flag_C) <= '1';
678
+ F(Flag_H) <= '0';
679
+ F(Flag_N) <= '0';
680
+ end if;
681
+ else
682
+ if I_CPL = '1' then
683
+ -- CPL
684
+ ACC <= not ACC;
685
+ F(Flag_Y) <= not ACC(5);
686
+ F(Flag_H) <= '1';
687
+ F(Flag_X) <= not ACC(3);
688
+ F(Flag_N) <= '1';
689
+ end if;
690
+ if I_CCF = '1' then
691
+ -- CCF
692
+ F(Flag_C) <= not F(Flag_C);
693
+ F(Flag_Y) <= ACC(5);
694
+ F(Flag_H) <= F(Flag_C);
695
+ F(Flag_X) <= ACC(3);
696
+ F(Flag_N) <= '0';
697
+ end if;
698
+ if I_SCF = '1' then
699
+ -- SCF
700
+ F(Flag_C) <= '1';
701
+ F(Flag_Y) <= ACC(5);
702
+ F(Flag_H) <= '0';
703
+ F(Flag_X) <= ACC(3);
704
+ F(Flag_N) <= '0';
705
+ end if;
706
+ end if;
707
+
708
+
709
+ end if;
710
+
711
+ if TState = 2 and Wait_n = '1' then
712
+ if ISet = "01" and MCycle = "111" then
713
+ if Mode = 3 then
714
+ updateIR <= '1';
715
+ else
716
+ IR <= DInst;
717
+ end if;
718
+ end if;
719
+ if JumpE = '1' then
720
+ PC <= unsigned(signed(PC) + signed(DI_Reg));
721
+ elsif Inc_PC = '1' then
722
+ PC <= PC + 1;
723
+ end if;
724
+ if BTR_r = '1' then
725
+ PC <= PC - 2;
726
+ end if;
727
+ if RstP = '1' then
728
+ TmpAddr <= (others =>'0');
729
+ TmpAddr(5 downto 3) <= IR(5 downto 3);
730
+ end if;
731
+ end if;
732
+ if TState = 3 and MCycle = "110" then
733
+ if (Mode = 3) then
734
+ TmpAddr <= std_logic_vector(signed(RegBusC) + signed(DInst));
735
+ else
736
+ TmpAddr <= std_logic_vector(signed(RegBusC) + signed(DI_Reg));
737
+ end if;
738
+ end if;
739
+
740
+ if ADDSPdd = '1' and TState = 2 then
741
+ TmpAddr<=std_logic_vector(SP);
742
+ SP <= unsigned(signed(SP)+signed(Save_Mux));
743
+ end if;
744
+
745
+ if LDSPHL = '1' then
746
+ SP <= unsigned(RegBusC);
747
+ end if;
748
+ if ExchangeAF = '1' then
749
+ Ap <= ACC;
750
+ ACC <= Ap;
751
+ Fp <= F;
752
+ F <= Fp;
753
+ end if;
754
+ if ExchangeRS = '1' then
755
+ Alternate <= not Alternate;
756
+ end if;
757
+ end if;
758
+
759
+ if TState = 3 then
760
+ if LDZ = '1' then
761
+ if (Mode = 3) then
762
+ TmpAddr(7 downto 0) <= DInst;
763
+ else
764
+ TmpAddr(7 downto 0) <= DI_Reg;
765
+ end if;
766
+ end if;
767
+ if LDW = '1' then
768
+ if (Mode = 3) then
769
+ TmpAddr(15 downto 8) <= DInst;
770
+ else
771
+ TmpAddr(15 downto 8) <= DI_Reg;
772
+ end if;
773
+ end if;
774
+
775
+ if Special_LD(2) = '1' then
776
+ case Special_LD(1 downto 0) is
777
+ when "00" =>
778
+ ACC <= I;
779
+ F(Flag_P) <= IntE_FF2;
780
+ when "01" =>
781
+ ACC <= std_logic_vector(R);
782
+ F(Flag_P) <= IntE_FF2;
783
+ when "10" =>
784
+ I <= ACC;
785
+ when others =>
786
+ R <= unsigned(ACC);
787
+ end case;
788
+ end if;
789
+ end if;
790
+
791
+ if (I_DJNZ = '0' and Save_ALU_r = '1') or ALU_Op_r = "1001" then
792
+ if Mode = 3 then
793
+ F(6) <= F_Out(6);
794
+ F(5) <= F_Out(5);
795
+ F(7) <= F_Out(7);
796
+ if PreserveC_r = '0' then
797
+ F(4) <= F_Out(4);
798
+ end if;
799
+ else
800
+ F(7 downto 1) <= F_Out(7 downto 1);
801
+ if PreserveC_r = '0' then
802
+ F(Flag_C) <= F_Out(0);
803
+ end if;
804
+ end if;
805
+ end if;
806
+ if T_Res = '1' and I_INRC = '1' then
807
+ F(Flag_H) <= '0';
808
+ F(Flag_N) <= '0';
809
+ if DI_Reg(7 downto 0) = "00000000" then
810
+ F(Flag_Z) <= '1';
811
+ else
812
+ F(Flag_Z) <= '0';
813
+ end if;
814
+ F(Flag_S) <= DI_Reg(7);
815
+ F(Flag_P) <= not (DI_Reg(0) xor DI_Reg(1) xor DI_Reg(2) xor DI_Reg(3) xor
816
+ DI_Reg(4) xor DI_Reg(5) xor DI_Reg(6) xor DI_Reg(7));
817
+ end if;
818
+
819
+ if TState = 1 then
820
+ DO <= BusB;
821
+ if I_RLD = '1' then
822
+ DO(3 downto 0) <= BusA(3 downto 0);
823
+ DO(7 downto 4) <= BusB(3 downto 0);
824
+ end if;
825
+ if I_RRD = '1' then
826
+ DO(3 downto 0) <= BusB(7 downto 4);
827
+ DO(7 downto 4) <= BusA(3 downto 0);
828
+ end if;
829
+ end if;
830
+
831
+ if T_Res = '1' then
832
+ Read_To_Reg_r(3 downto 0) <= Set_BusA_To;
833
+ Read_To_Reg_r(4) <= Read_To_Reg;
834
+ if Read_To_Acc = '1' then
835
+ Read_To_Reg_r(3 downto 0) <= "0111";
836
+ Read_To_Reg_r(4) <= '1';
837
+ end if;
838
+ end if;
839
+
840
+ if TState = 1 and I_BT = '1' then
841
+ F(Flag_X) <= ALU_Q(3);
842
+ F(Flag_Y) <= ALU_Q(1);
843
+ F(Flag_H) <= '0';
844
+ F(Flag_N) <= '0';
845
+ end if;
846
+ if I_BC = '1' or I_BT = '1' then
847
+ F(Flag_P) <= IncDecZ;
848
+ end if;
849
+
850
+ if (TState = 1 and Save_ALU_r = '0') or
851
+ (Save_ALU_r = '1' and ALU_OP_r /= "0111") then
852
+ case Read_To_Reg_r is
853
+ when "10111" =>
854
+ ACC <= Save_Mux;
855
+ when "10110" =>
856
+ DO <= Save_Mux;
857
+ when "11000" =>
858
+ SP(7 downto 0) <= unsigned(Save_Mux);
859
+ when "11001" =>
860
+ SP(15 downto 8) <= unsigned(Save_Mux);
861
+ when "11011" =>
862
+ if Mode = 3 then
863
+ F(7 downto 4) <= Save_Mux(7 downto 4);
864
+ F(3 downto 0) <= "0000"; -- bit 3 to 0 always return 0
865
+ else
866
+ F <= Save_Mux;
867
+ end if;
868
+ when others =>
869
+ end case;
870
+ if XYbit_undoc='1' then
871
+ DO <= ALU_Q;
872
+ end if;
873
+ end if;
874
+
875
+ end if;
876
+
877
+ end if;
878
+
879
+ end process;
880
+
881
+ ---------------------------------------------------------------------------
882
+ --
883
+ -- BC('), DE('), HL('), IX and IY
884
+ --
885
+ ---------------------------------------------------------------------------
886
+
887
+ SS_4_BACK(15 downto 0) <= RegBusA_r ;
888
+ SS_4_BACK(18 downto 16) <= "000"; -- unused now
889
+ SS_4_BACK(21 downto 19) <= RegAddrA_r;
890
+ SS_4_BACK(24 downto 22) <= "000"; -- unused now
891
+ SS_4_BACK(27 downto 25) <= RegAddrB_r;
892
+ SS_4_BACK(30 downto 28) <= RegAddrC ;
893
+ SS_4_BACK(31) <= IncDecZ ;
894
+
895
+ process (CLK_n)
896
+ begin
897
+ if CLK_n'event and CLK_n = '1' then
898
+ if RESET_n = '0' then
899
+
900
+ RegBusA_r <= SS_4(15 downto 0); -- (others => '0');
901
+ RegAddrA_r <= SS_4(21 downto 19); -- (others => '0');
902
+ RegAddrB_r <= SS_4(27 downto 25); -- (others => '0');
903
+ RegAddrC <= SS_4(30 downto 28); -- (others => '0');
904
+ IncDecZ <= SS_4(31); -- '0';
905
+
906
+ elsif ClkEn = '1' then
907
+ -- Bus A / Write
908
+ RegAddrA_r <= Alternate & Set_BusA_To(2 downto 1);
909
+ if XY_Ind = '0' and XY_State /= "00" and Set_BusA_To(2 downto 1) = "10" then
910
+ RegAddrA_r <= XY_State(1) & "11";
911
+ end if;
912
+
913
+ -- Bus B
914
+ RegAddrB_r <= Alternate & Set_BusB_To(2 downto 1);
915
+ if XY_Ind = '0' and XY_State /= "00" and Set_BusB_To(2 downto 1) = "10" then
916
+ RegAddrB_r <= XY_State(1) & "11";
917
+ end if;
918
+
919
+ -- Address from register
920
+ RegAddrC <= Alternate & Set_Addr_To(1 downto 0);
921
+ -- Jump (HL), LD SP,HL
922
+ if (JumpXY = '1' or LDSPHL = '1') then
923
+ RegAddrC <= Alternate & "10";
924
+ end if;
925
+ if ((JumpXY = '1' or LDSPHL = '1') and XY_State /= "00") or (MCycle = "110") then
926
+ RegAddrC <= XY_State(1) & "11";
927
+ end if;
928
+
929
+ if I_DJNZ = '1' and Save_ALU_r = '1' and Mode < 2 then
930
+ IncDecZ <= F_Out(Flag_Z);
931
+ end if;
932
+ if (TState = 2 or (TState = 3 and MCycle = "001")) and IncDec_16(2 downto 0) = "100" then
933
+ if ID16 = 0 then
934
+ IncDecZ <= '0';
935
+ else
936
+ IncDecZ <= '1';
937
+ end if;
938
+ end if;
939
+
940
+ RegBusA_r <= RegBusA;
941
+ end if;
942
+ end if;
943
+ end process;
944
+
945
+ RegAddrA <=
946
+ -- 16 bit increment/decrement
947
+ Alternate & IncDec_16(1 downto 0) when (TState = 2 or
948
+ (TState = 3 and MCycle = "001" and IncDec_16(2) = '1')) and XY_State = "00" else
949
+ XY_State(1) & "11" when (TState = 2 or
950
+ (TState = 3 and MCycle = "001" and IncDec_16(2) = '1')) and IncDec_16(1 downto 0) = "10" else
951
+ -- EX HL,DL
952
+ Alternate & "10" when ExchangeDH = '1' and TState = 3 else
953
+ Alternate & "01" when ExchangeDH = '1' and TState = 4 else
954
+ -- LDHLSP
955
+ "010" when LDHLSP = '1' and TState = 4 else
956
+ -- Bus A / Write
957
+ RegAddrA_r;
958
+
959
+ RegAddrB <=
960
+ -- EX HL,DL
961
+ Alternate & "01" when ExchangeDH = '1' and TState = 3 else
962
+ -- Bus B
963
+ RegAddrB_r;
964
+
965
+ ID16 <= signed(RegBusA) - 1 when IncDec_16(3) = '1' else
966
+ signed(RegBusA) + 1;
967
+
968
+ process (Save_ALU_r, Auto_Wait_t1, ALU_OP_r, Read_To_Reg_r,
969
+ ExchangeDH, IncDec_16, MCycle, TState, Wait_n,LDHLSP)
970
+ begin
971
+ RegWEH <= '0';
972
+ RegWEL <= '0';
973
+ if (TState = 1 and Save_ALU_r = '0') or
974
+ (Save_ALU_r = '1' and ALU_OP_r /= "0111") then
975
+ case Read_To_Reg_r is
976
+ when "10000" | "10001" | "10010" | "10011" | "10100" | "10101" =>
977
+ RegWEH <= not Read_To_Reg_r(0);
978
+ RegWEL <= Read_To_Reg_r(0);
979
+ when others =>
980
+ end case;
981
+ end if;
982
+
983
+ if ExchangeDH = '1' and (TState = 3 or TState = 4) then
984
+ RegWEH <= '1';
985
+ RegWEL <= '1';
986
+ end if;
987
+
988
+ if LDHLSP = '1' and MCycle = "010" and TState = 4 then
989
+ RegWEH <= '1';
990
+ RegWEL <= '1';
991
+ end if;
992
+
993
+ if IncDec_16(2) = '1' and ((TState = 2 and Wait_n = '1' and MCycle /= "001") or (TState = 3 and MCycle = "001")) then
994
+ case IncDec_16(1 downto 0) is
995
+ when "00" | "01" | "10" =>
996
+ RegWEH <= '1';
997
+ RegWEL <= '1';
998
+ when others =>
999
+ end case;
1000
+ end if;
1001
+ end process;
1002
+
1003
+ TmpAddr2 <= std_logic_vector(unsigned(signed(SP) + signed(Save_Mux)));
1004
+
1005
+ process (Save_Mux, RegBusB, RegBusA_r, ID16,
1006
+ ExchangeDH, IncDec_16, MCycle, TState, Wait_n, LDHLSP, SP, TmpAddr2)
1007
+ begin
1008
+ RegDIH <= Save_Mux;
1009
+ RegDIL <= Save_Mux;
1010
+
1011
+ if LDHLSP = '1' and MCycle = "010" and TState = 4 then
1012
+ RegDIH <= TmpAddr2(15 downto 8);
1013
+ RegDIL <= TmpAddr2(7 downto 0);
1014
+ end if;
1015
+
1016
+ if ExchangeDH = '1' and TState = 3 then
1017
+ RegDIH <= RegBusB(15 downto 8);
1018
+ RegDIL <= RegBusB(7 downto 0);
1019
+ end if;
1020
+ if ExchangeDH = '1' and TState = 4 then
1021
+ RegDIH <= RegBusA_r(15 downto 8);
1022
+ RegDIL <= RegBusA_r(7 downto 0);
1023
+ end if;
1024
+
1025
+ if IncDec_16(2) = '1' and ((TState = 2 and MCycle /= "001") or (TState = 3 and MCycle = "001")) then
1026
+ RegDIH <= std_logic_vector(ID16(15 downto 8));
1027
+ RegDIL <= std_logic_vector(ID16(7 downto 0));
1028
+ end if;
1029
+ end process;
1030
+
1031
+ Regs : T80_Reg
1032
+ port map(
1033
+ RESET_n => RESET_n,
1034
+ Clk => CLK_n,
1035
+ CEN => ClkEn,
1036
+ WEH => RegWEH,
1037
+ WEL => RegWEL,
1038
+ AddrA => RegAddrA,
1039
+ AddrB => RegAddrB,
1040
+ AddrC => RegAddrC,
1041
+ DIH => RegDIH,
1042
+ DIL => RegDIL,
1043
+ DOAH => RegBusA(15 downto 8),
1044
+ DOAL => RegBusA(7 downto 0),
1045
+ DOBH => RegBusB(15 downto 8),
1046
+ DOBL => RegBusB(7 downto 0),
1047
+ DOCH => RegBusC(15 downto 8),
1048
+ DOCL => RegBusC(7 downto 0),
1049
+ -- savestates
1050
+ SaveStateBus_Din => SaveStateBus_Din,
1051
+ SaveStateBus_Adr => SaveStateBus_Adr,
1052
+ SaveStateBus_wren => SaveStateBus_wren,
1053
+ SaveStateBus_rst => SaveStateBus_rst,
1054
+ SaveStateBus_Dout => reg_wired_or(0)
1055
+ );
1056
+
1057
+ ---------------------------------------------------------------------------
1058
+ --
1059
+ -- Buses
1060
+ --
1061
+ ---------------------------------------------------------------------------
1062
+
1063
+ SS_4_BACK(39 downto 32) <= BusA;
1064
+ SS_4_BACK(47 downto 40) <= BusB;
1065
+
1066
+ process (CLK_n)
1067
+ begin
1068
+ if CLK_n'event and CLK_n = '1' then
1069
+
1070
+ if RESET_n = '0' then
1071
+
1072
+ BusA <= SS_4(39 downto 32); --(others => '0');
1073
+ BusB <= SS_4(47 downto 40); --(others => '0');
1074
+
1075
+ elsif ClkEn = '1' then
1076
+ case Set_BusB_To is
1077
+ when "0111" =>
1078
+ BusB <= ACC;
1079
+ when "0000" | "0001" | "0010" | "0011" | "0100" | "0101" =>
1080
+ if Set_BusB_To(0) = '1' then
1081
+ BusB <= RegBusB(7 downto 0);
1082
+ else
1083
+ BusB <= RegBusB(15 downto 8);
1084
+ end if;
1085
+ when "0110" =>
1086
+ BusB <= DI_Reg;
1087
+ when "1000" =>
1088
+ BusB <= std_logic_vector(SP(7 downto 0));
1089
+ when "1001" =>
1090
+ BusB <= std_logic_vector(SP(15 downto 8));
1091
+ when "1010" =>
1092
+ BusB <= "00000001";
1093
+ when "1011" =>
1094
+ BusB <= F;
1095
+ when "1100" =>
1096
+ BusB <= std_logic_vector(PC(7 downto 0));
1097
+ when "1101" =>
1098
+ BusB <= std_logic_vector(PC(15 downto 8));
1099
+ when "1110" =>
1100
+ BusB <= "00000000";
1101
+ when others =>
1102
+ BusB <= "--------";
1103
+ end case;
1104
+
1105
+ case Set_BusA_To is
1106
+ when "0111" =>
1107
+ BusA <= ACC;
1108
+ when "0000" | "0001" | "0010" | "0011" | "0100" | "0101" =>
1109
+ if Set_BusA_To(0) = '1' then
1110
+ BusA <= RegBusA(7 downto 0);
1111
+ else
1112
+ BusA <= RegBusA(15 downto 8);
1113
+ end if;
1114
+ when "0110" =>
1115
+ BusA <= DI_Reg;
1116
+ when "1000" =>
1117
+ BusA <= std_logic_vector(SP(7 downto 0));
1118
+ when "1001" =>
1119
+ BusA <= std_logic_vector(SP(15 downto 8));
1120
+ when "1010" =>
1121
+ BusA <= "00000000";
1122
+ when others =>
1123
+ BusA <= "--------";
1124
+ end case;
1125
+ if XYbit_undoc='1' then
1126
+ BusA <= DI_Reg;
1127
+ BusB <= DI_Reg;
1128
+ end if;
1129
+ end if;
1130
+ end if;
1131
+ end process;
1132
+
1133
+ ---------------------------------------------------------------------------
1134
+ --
1135
+ -- Generate external control signals
1136
+ --
1137
+ ---------------------------------------------------------------------------
1138
+
1139
+ SS_4_BACK(48) <= RFSH_n;
1140
+
1141
+ process (CLK_n)
1142
+ begin
1143
+ if CLK_n'event and CLK_n = '1' then
1144
+ if RESET_n = '0' then
1145
+ RFSH_n <= SS_4(48); --'1';
1146
+ elsif CEN = '1' then
1147
+ if MCycle = "001" and ((TState = 2 and Wait_n = '1') or TState = 3) then
1148
+ RFSH_n <= '0';
1149
+ else
1150
+ RFSH_n <= '1';
1151
+ end if;
1152
+ end if;
1153
+ end if;
1154
+ end process;
1155
+
1156
+ MC <= std_logic_vector(MCycle);
1157
+ TS <= std_logic_vector(TState);
1158
+ DI_Reg <= DI;
1159
+ HALT_n <= not Halt_FF;
1160
+ BUSAK_n <= not BusAck;
1161
+ IntCycle_n <= not IntCycle;
1162
+ IntE <= IntE_FF1;
1163
+ IORQ <= IORQ_i;
1164
+ Stop <= I_DJNZ;
1165
+
1166
+ -------------------------------------------------------------------------
1167
+ --
1168
+ -- Syncronise inputs
1169
+ --
1170
+ -------------------------------------------------------------------------
1171
+
1172
+ SS_4_BACK(49) <= BusReq_s;
1173
+ SS_4_BACK(50) <= INT_s;
1174
+ SS_4_BACK(51) <= NMI_s;
1175
+ SS_4_BACK(52) <= OldNMI_n;
1176
+
1177
+ process (CLK_n)
1178
+ begin
1179
+ if CLK_n'event and CLK_n = '1' then
1180
+ if RESET_n = '0' then
1181
+ BusReq_s <= SS_4(49); -- '0';
1182
+ INT_s <= SS_4(50); -- '0';
1183
+ NMI_s <= SS_4(51); -- '0';
1184
+ OldNMI_n <= SS_4(52); -- '0';
1185
+ elsif CEN = '1' then
1186
+ BusReq_s <= not BUSRQ_n;
1187
+ INT_s <= not INT_n;
1188
+ if NMICycle = '1' then
1189
+ NMI_s <= '0';
1190
+ elsif NMI_n = '0' and OldNMI_n = '1' then
1191
+ NMI_s <= '1';
1192
+ end if;
1193
+ OldNMI_n <= NMI_n;
1194
+ end if;
1195
+ end if;
1196
+ end process;
1197
+
1198
+ -------------------------------------------------------------------------
1199
+ --
1200
+ -- Main state machine
1201
+ --
1202
+ -------------------------------------------------------------------------
1203
+
1204
+ SS_3_BACK(41 downto 39) <= MCycle ;
1205
+ SS_3_BACK(44 downto 42) <= std_logic_vector(TState);
1206
+ SS_3_BACK(47 downto 45) <= Pre_XY_F_M ;
1207
+ SS_3_BACK(48) <= Halt_FF ;
1208
+ SS_3_BACK(49) <= BusAck ;
1209
+ SS_3_BACK(50) <= NMICycle ;
1210
+ SS_3_BACK(51) <= IntCycle ;
1211
+ SS_3_BACK(52) <= IntE_FF1 ;
1212
+ SS_3_BACK(53) <= IntE_FF2 ;
1213
+ SS_3_BACK(54) <= No_BTR ;
1214
+ SS_3_BACK(55) <= Auto_Wait_t1;
1215
+ SS_3_BACK(56) <= Auto_Wait_t2;
1216
+ SS_3_BACK(57) <= M1_n ;
1217
+
1218
+ process (CLK_n)
1219
+ begin
1220
+ if CLK_n'event and CLK_n = '1' then
1221
+ if RESET_n = '0' then
1222
+ MCycle <= SS_3(41 downto 39); -- "001";
1223
+ TState <= unsigned(SS_3(44 downto 42)); -- "000";
1224
+ Pre_XY_F_M <= SS_3(47 downto 45); -- "000";
1225
+ Halt_FF <= SS_3(48); -- '0';
1226
+ BusAck <= SS_3(49); -- '0';
1227
+ NMICycle <= SS_3(50); -- '0';
1228
+ IntCycle <= SS_3(51); -- '0';
1229
+ IntE_FF1 <= SS_3(52); -- '0';
1230
+ IntE_FF2 <= SS_3(53); -- '0';
1231
+ No_BTR <= SS_3(54); -- '0';
1232
+ Auto_Wait_t1 <= SS_3(55); -- '0';
1233
+ Auto_Wait_t2 <= SS_3(56); -- '0';
1234
+ M1_n <= SS_3(57); -- '1';
1235
+ elsif CEN = '1' then
1236
+ Auto_Wait_t1 <= Auto_Wait;
1237
+ Auto_Wait_t2 <= Auto_Wait_t1;
1238
+ No_BTR <= (I_BT and (not IR(4) or not F(Flag_P))) or
1239
+ (I_BC and (not IR(4) or F(Flag_Z) or not F(Flag_P))) or
1240
+ (I_BTR and (not IR(4) or F(Flag_Z)));
1241
+ if TState = 1 then
1242
+ if (Mode = 3 and INT_n = '0' and isGBC = '0') then
1243
+ Halt_FF <= '0'; --GB: Exit Halt here so interrupt or next instruction starts earlier
1244
+ end if;
1245
+ end if;
1246
+ if TState = 2 then
1247
+ if SetEI = '1' then
1248
+ IntE_FF1 <= '1';
1249
+ IntE_FF2 <= '1';
1250
+ end if;
1251
+ if I_RETN = '1' then
1252
+ IntE_FF1 <= IntE_FF2;
1253
+ end if;
1254
+ end if;
1255
+ if TState = 3 then
1256
+ if SetDI = '1' then
1257
+ IntE_FF1 <= '0';
1258
+ IntE_FF2 <= '0';
1259
+ end if;
1260
+ end if;
1261
+ if IntCycle = '1' or NMICycle = '1' then
1262
+ Halt_FF <= '0';
1263
+ end if;
1264
+ if MCycle = "001" and TState = 2 and Wait_n = '1' then
1265
+ M1_n <= '1';
1266
+ end if;
1267
+ if BusReq_s = '1' and BusAck = '1' then
1268
+ else
1269
+ BusAck <= '0';
1270
+ if TState = 2 and Wait_n = '0' then
1271
+ elsif T_Res = '1' then
1272
+ if Halt = '1' and ( not(Mode = 3 and INT_n = '0' and IntE_FF1 = '0')) then -- halt bug when Mode = 3 , INT_n = '0' and IME=0
1273
+ Halt_FF <= '1';
1274
+ end if;
1275
+ if BusReq_s = '1' then
1276
+ BusAck <= '1';
1277
+ else
1278
+ TState <= "001";
1279
+ if (IntCycle = '1' and Mode = 3) then -- GB: read interrupt at MCycle 3
1280
+ if (MCycle = "010") then
1281
+ M1_n <= '0';
1282
+ else
1283
+ M1_n <= '1';
1284
+ end if;
1285
+ end if;
1286
+ if NextIs_XY_Fetch = '1' then
1287
+ MCycle <= "110";
1288
+ Pre_XY_F_M <= MCycle;
1289
+ if IR = "00110110" and Mode = 0 then
1290
+ Pre_XY_F_M <= "010";
1291
+ end if;
1292
+ elsif (MCycle = "111") or
1293
+ (MCycle = "110" and Mode = 1 and ISet /= "01") then
1294
+ MCycle <= std_logic_vector(unsigned(Pre_XY_F_M) + 1);
1295
+ elsif (MCycle = MCycles) or
1296
+ No_BTR = '1' or
1297
+ (MCycle = "010" and I_DJNZ = '1' and IncDecZ = '1') then
1298
+ M1_n <= '0';
1299
+ MCycle <= "001";
1300
+ IntCycle <= '0';
1301
+ NMICycle <= '0';
1302
+ if NMI_s = '1' and Prefix = "00" then
1303
+ NMICycle <= '1';
1304
+ IntE_FF1 <= '0';
1305
+ elsif (IntE_FF1 = '1' and INT_s = '1') and Prefix = "00" and SetEI = '0'
1306
+ and ((MCycle = "001" and Halt_FF = '0') or Mode /= 3) then -- GB: Interrupt only on single cycle instructions and not Halted
1307
+ IntCycle <= '1';
1308
+ IntE_FF1 <= '0';
1309
+ IntE_FF2 <= '0';
1310
+ elsif (Halt_FF = '1' and INT_s = '1' and Mode = 3) then
1311
+ Halt_FF <= '0';
1312
+ end if;
1313
+ else
1314
+ MCycle <= std_logic_vector(unsigned(MCycle) + 1);
1315
+ end if;
1316
+ end if;
1317
+ else
1318
+ if Auto_Wait = '1' nand Auto_Wait_t2 = '0' then
1319
+
1320
+ TState <= TState + 1;
1321
+ end if;
1322
+ end if;
1323
+ end if;
1324
+ if TState = 0 then
1325
+ M1_n <= '0';
1326
+ end if;
1327
+ end if;
1328
+ end if;
1329
+ end process;
1330
+
1331
+ process (IntCycle, NMICycle, MCycle)
1332
+ begin
1333
+ Auto_Wait <= '0';
1334
+ if (Mode /= 3 and (IntCycle = '1' or NMICycle = '1')) then
1335
+ if MCycle = "001" then
1336
+ Auto_Wait <= '1';
1337
+ end if;
1338
+ end if;
1339
+ end process;
1340
+
1341
+ end;