Drew T
3827d01bfb
- RE-SCOPED at plan time (R35): the roadmap's swing number rested on a broken-tool probe. B2's "structural families bank ~0%" (0/8, which reshaped 2 phases of strategy) was a MISSING CARVE -> 8/8, then 102/115 (88.7%). The ~0% doctrine has NO surviving post-fix evidence. - T0 img_path derive-not-guess -> un-hid a 230,612-ins SC07 pool doubly hidden (P27 onboarded 4 overlays, never regenerated the map; the hardcode would have called every member "LEN"). - T3-A: the SC07 pool is h_exact + UNWIRED, not h_seq. T4 dedup_extend (NEW) wired 6174/6457 (95.6%) -> groups 134->138 binaries, C1 coverage +6174. NOT member_adapt (the number said build nothing). - T5: resident 21->14 (90.34%, 7 banked via an Ultracode wave) + honest dossier for the 14; fixed progress.py (#if 0 + len()-sum) and match_one's FAKE isolation (found by an agent mid-wave). - T2 purged the poisoned grinder blacklist (8/22 matched anyway). T6 killed the --chunk 1 double-build. - T7: make audit-binaries (the R36 citizenship gate, negative-control-proven) + fixed disc_code_sweep's BLINDNESS to compressed code (the type-4 row was vacuous for 138 known binaries) + the worklist key-bug. - T3b: the legacy h_seq swing number = ~3% AS-TOOLED, CLASSIFIED (274 DIFF / 37 PLUMBING), ceiling UNKNOWN -- the 274 DIFF is byte-PURE members whose remapped bodies don't reproduce (the same tooling-vs-wall ambiguity that resolved to TOOLING twice this phase). P29 disambiguates before scaling. - THREE SELF-INFLICTED DEFECTS fixed forward: the registry yaml.safe_dump (H5, destroyed 47 comments + 1832 hex fields, invisible to every byte-gate), two DIFF mis-reports (R14), the match_one shared scratch. - rule R36 (a newly-discovered binary is not real until every consumer knows it; enforced by audit-binaries). cookbook §53. R22 140/140 throughout; tools-health OK; dedup 1840/0.
BFM-decomp
A matching decompilation of Brave Fencer Musashi (PlayStation, SLUS-00726, USA 1998) — the first public decompilation effort for this game.
What "matching" means
The goal is C source code that, compiled with the original-era toolchain (PsyQ 4.x / GCC 2.7.2-family + ASPSX via maspsx), produces a byte-for-byte identical SLUS_007.26 and, eventually, byte-identical overlay binaries. SHA1 checksums are the ground truth; "functionally equivalent" does not count.
No ROM content
This repository contains no game assets, no disassembly output, and no ROM-derived data — only source code, build configuration, symbol names/addresses, hashes, and documentation. To build or contribute you must provide your own dump of the game disc (4-track BIN/CUE, redump layout). See .gitignore for the firewall.
Project status
Latest (Phase 19, 2026-06-20): the project builds 136 binaries byte-identical from a clean tree (the EXE + the resident engine + all 134 location overlays);
make check-all→ 136/136. Fleet byte-identical-from-source is 58.0% (function-instance-weighted; see the PhaseEnds for the byte-weighted ~30% figure and what it includes). Shared engine functions are matched once inov_SC01_077and propagated ×134 viatools/dedup_propagate.py. (The narrative below is Phase-11/12-era; a full refresh is part of the public-flip prep.)
Gen1 (foundation) complete — the matching pipeline is proven end-to-end. make extract && make build && make check rebuilds SLUS_007.26 byte-for-byte identical (SHA1 143dbb89…) from C + assembly, reproducibly across many sessions.
- Compiler pinned by evidence:
gcc-2.7.2-psx -O2 -G0 -mips1 -mcpu=3000+maspsx --aspsx-version=2.56 --expand-div. - 52 functions hand-matched to byte-identical machine code — including the LZSS streaming decompressor — with a decomp-permuter + matching-cookbook "flywheel" to accelerate the next.
- 959 PsyQ SDK functions linked byte-identical (libcd, libgs, libgte, libspu/libsnd, libgpu, libc2, libmcrd, libapi/libcard, libetc) straight from the real PsyQ 4.0 libraries instead of re-decompiling them — bringing byte-identical-from-source coverage of the EXE to ~50%.
- File-loader / overlay system reverse-engineered, with the resident engine blob + location overlays' load addresses proven byte-identical against a live PCSX-Redux RAM dump.
About half the EXE is still INCLUDE_ASM stubs (correct bytes, not yet C), and the bulk of the game lives in compressed overlays inside the .CD archives — Gen2 (overlays & engine at scale) is underway:
- The build toolchain is binary-agnostic (one parameterized pipeline builds any binary), and the always-resident engine blob rebuilds byte-for-byte from source (SHA1
8e17e02f…) — the second binary reconstructed exactly, after the EXE — and is now 86% hand-matched C (123 / 146 functions, up from 0): its scripting turned out to be compiled-MIPS state/mode dispatch, not a bytecode VM, and the save-file + sound (SQV) formats are documented. The harvest used a reusable swarm-of-agents + bit-for-bit byte-gate method (a wrong match can't be accepted) —tools/harvest_verify.py+tools/match_one.py, which carry straight into the overlay phase. - A cross-binary deduplication pipeline is live: a Ghidra-free signer fingerprints all 134 location overlays, and the report finds ~9,000 byte-identical function groups shared across binaries (~28 MB of collapsible code) — a single engine function is byte-identical in all 134 overlays. This is "one match unlocks many": each engine match will be auto-credited across the overlay fleet.
Current phase and detailed progress live in phase-ends/ (newest PhaseEnd_*.md = current state); methodology, rules, and the full roadmap are in PROJECT_CONTEXT.md; environment setup in docs/SETUP.md.
This project is developed primarily by Claude Code driving Ghidra through an MCP server; see CLAUDE.md.
License
Private repository for now. AGPL-3.0 is planned at public release, modeled on sotn-decomp. tools/brave-CUE/ is CUE's BRAVE extractor (GPL, source included) and retains its own license.