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retroDE_ps2/docs/decisions/0005-phase0-source-of-truth.md
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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Decision 0005: Phase 0 Source of Truth

Status: Locked

Context

docs/phase0_checklist.md began as an options menu. Once the Phase 0 decisions were locked, the project needed one clear rule for which document is authoritative.

Decision

Decision records under docs/decisions/ are the source of truth for locked Phase 0 choices.

docs/phase0_checklist.md remains useful, but only as a progress and navigation document. When a checklist item is locked, it should point to the corresponding decision record.

Consequences

  • The checklist can stay concise.
  • Locked decisions are not duplicated as prose in multiple places.
  • Future changes to posture, BIOS policy, milestone definition, or validation policy should update the decision records first.