thejayman77
ec82764bef
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>
1.2 KiB
1.2 KiB
Decision 0004: First Visible Milestone
Status: Locked
Context
The project needed a first milestone that would produce fast, meaningful signal without conflating platform-video integration with EE/BIOS bring-up.
Options considered
- BIOS fetch only.
- GS-stub test pattern only.
- Minimal homebrew EE graphics.
- Split first milestone into two parallel proofs.
Decision
Adopt a split first milestone with two parallel proofs.
Milestone A: platform/video proof
- GS-stub test pattern through the platform video path.
Purpose:
- validate display plumbing,
- validate retroDE integration,
- isolate platform-output bugs from CPU/boot bugs.
Milestone B: core/boot proof
- EE BIOS fetch and early trace match against DobieStation.
Purpose:
- validate memory visibility, reset vectors, and EE-side early execution,
- isolate core bring-up bugs from display-path bugs.
Consequences
- Early work can proceed in parallel on platform-video and core-boot tracks.
- "First success" is no longer overloaded into one giant milestone.
- Minimal homebrew EE graphics is deferred to a later integration milestone.
- The stub-module plan should explicitly map which stubs and traces are needed for Milestone A versus Milestone B.