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thejayman77 ec82764bef Initial commit: retroDE_ps2 — first-of-its-kind PS2 GS FPGA core (DE25-Nano / Agilex 5)

RTL (GS rasterizer, EE core stub, platform bridge, LPDDR4B path), sim regression
(272 TBs), docs, and tooling. Copyrighted PS2 content (BIOS, game code, GS dumps,
and all dump-derived textures/traces) is excluded via .gitignore and stays local.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

2026-06-29 20:10:50 -04:00

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Phase 0 Checklist

This is the architecture-lock checklist to complete before substantial RTL work.

Decision records under docs/decisions/ are the source of truth for locked choices. This checklist is now a progress/navigation view.

Locked decisions

Posture — locked: staged subset on current hardware — see docs/decisions/0001-posture.md
BIOS policy — locked: real BIOS plus narrow debug stubs — see docs/decisions/0002-bios-policy.md
Golden reference strategy — locked: multiple references with role separation — see docs/decisions/0003-golden-reference.md
First visible milestone — locked: split platform/video proof and EE/BIOS trace proof — see docs/decisions/0004-first-visible-milestone.md
Trace format — locked: common text envelope plus subsystem-specific payloads — see docs/decisions/0000-trace-format.md

Still to lock

Memory architecture policy
Media/storage policy
Validation posture beyond the initial trace-format choice

Required documents

docs/contracts/memory.md
docs/contracts/ee.md
docs/contracts/intc.md
docs/contracts/dmac.md
docs/contracts/gif_gs.md
docs/contracts/sif.md
docs/contracts/validation.md

Exit criteria for Phase 0

Major subsystem ownership is written down.
The memory and DMA contracts are explicit enough to build stubs.
The first three milestones are named and measurable.
The team agrees on what is allowed to be stubbed in Phase 1.

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