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49812da | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 | // Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the License for the
// specific language governing permissions and limitations
// under the License.
//
// Description: Wrapper for Apple Integer Basic ROM
//
// Author.....: Alan Garfield
// Niels A. Moseley
// Date.......: 26-1-2018
//
module rom_basic #(
parameter BASIC_FILENAME = "../../../roms/basic.hex"
) (
input clk, // clock signal
input [11:0] address, // address bus
output reg [7:0] dout // 8-bit data bus (output)
);
reg [7:0] rom_data[0:4095];
initial
$readmemh(BASIC_FILENAME, rom_data, 0, 4095);
always @(posedge clk)
dout <= rom_data[address];
endmodule
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