thejayman77
94d6293c43
Per Codex review of 471c1af:
1. tb_gs_async_fifo QUAD_WIDTH4 variant now runs at the PRODUCTION 93-bit width
(exercising the odd 23/23/23/24 remainder split) and drives a DISTINCT NONZERO
pattern into every width bank (seq XOR per-bank constants, bank2 inverted), with
the scoreboard checking the FULL reconstructed word. A swapped/broken/zeroed
upper bank now changes the word and trips the scoreboard. Depth-half crossing
(DEPTH=8) + wrap/full coverage retained. mk() is generate-guarded so the 32-bit
variants never elaborate the 93-bit selects.
2. Softened gs_async_fifo comments: 'same total M20K' -> EXPECTED-similar, pending
synthesis (fact -> expectation).
No simulations or Quartus run. Awaiting review before any sim.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
retroDE_ps2 Planning Docs
This directory is the working design scaffold for the PS2 core.
Purpose:
- define the intended repository shape before RTL lands,
- define subsystem boundaries before implementation choices harden,
- document what each block owns, what crosses the boundary, and how we will validate it.
Recommended reading order:
- repo_layout.md
- phase0_checklist.md
- contracts/README.md
- stub_module_plan.md
- wave2_dma_gif_plan.md
- wave25_memory_backed_dma_plan.md
- wave26_multi_beat_dma_plan.md
Relationship to references/:
references/is the research library.docs/is the project-definition layer.
Rule of thumb:
- If a file explains PS2 hardware as it exists, it belongs under
references/. - If a file explains how
retroDE_ps2intends to model, partition, or validate that hardware, it belongs underdocs/.