# Support SLT/SLTU instructions

- Source URL: https://github.com/KestrelComputer/polaris/pull/22

The SLT and SLTU instructions are decoded. However, the driver signals are never propagated to the ALU. Moreover, I don't think the ALU itself has SLT/SLTU functionality baked into it just yet.

Write bench tests to check for this condition.

Confirm malignant behavior with bench tests.

Propagate ltu_en from sequencer to ALU.

Propagate lts_en from sequencer to ALU.

Implement magnitude comparison logic in ALU. Probably borrow/re-use same logic as BLT and BLTU instructions.

## Fetched Issue/PR Details

Title: Support SLT/SLTU instructions.

Description: The pull request restores previously missing SLT/SLTU instructions. According to the contributor: "These instructions were previously missing. They're back!"

Status: Merged
Author: sam-falvo
Merge Date: November 26, 2016
Repository: KestrelComputer/polaris
Branch: master

Comments:
- sam-falvo (Nov 26, 2016): Indicated that this PR resolves issue #18 in the KestrelComputer/polaris repository.

Linked Issues: Closes issue #18 (the original local description above appears to capture the body of that referenced issue: missing propagation of SLT/SLTU driver signals into the ALU and missing magnitude-comparison logic in the ALU).