Evidence at a glance
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What was done
A strict byte-matching decompilation of the Sega Dreamcast version of San Francisco Rush 2049, aiming for C source code that compiles to the original retail executable bytes.
The San Francisco Rush 2049 (Dreamcast) decompilation project aims to produce C source code that the original Hitachi SHC compiler transforms into the exact binary representation of the US v1.001 retail executable. As of October 2026, the project has achieved 14.85% matching of game code and literal bytes, covering 534 of 1,555 total functions. The methodology relies on strict byte-matching, where credit is only awarded for exact matches at real addresses after a fixed-address link. AI agents, including Claude Opus 5.5 and Claude Fable 5.1, have contributed to the matching process under documented working rules. The project uses a 114-unit build system and includes tools for register-accurate side-by-side function comparison. Verification is performed through independent integration builds and strict audit receipts. The project does not include game files or compilers, requiring users to provide their own US v1.001 disc and the specified Hitachi SHC toolchain.
Reproduce it
python tools\dc_split.py; python tools\dc_build.py; python -B tools\audit_report.py