mirror of
https://github.com/imjasonh/nescript
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57faf9e36a
The compiler is deterministic: rebuilding any example produces a byte-identical ROM, verified across all 22 examples and all four mappers (NROM, MMC1, UxROM, MMC3). That means the .nes files are reproducible artefacts and can live next to their sources without drift. Benefits: - Users can clone the repo and open any example in an emulator without installing a Rust toolchain or running the compiler. - The emulator harness can trust examples/*.nes directly, so its CI job no longer needs a compiler build or a "compile all examples" loop — it just boots jsnes against the committed ROMs and diffs each against its golden. - ROM diffs in PRs are now meaningful: "this compiler change flipped 17 bytes in hello_sprite.nes" is visible review signal, not hidden behind the emulator golden. Guard rails so the ROMs don't drift from their sources: - .gitignore no longer excludes *.nes. - The `examples` CI job rebuilds every .ne into /tmp and fails loudly (with a GitHub error annotation pointing at the exact cargo command to rerun) if any committed ROM differs. - scripts/pre-commit does the same check locally. - CLAUDE.md now states that editing a .ne file requires rebuilding its .nes in the same commit, so future agents won't miss the invariant. Total footprint: 22 ROMs, 624 KB (avg 28 KB each — most are NROM 24 KB; two banked examples are larger). https://claude.ai/code/session_01BcCcHi6FUmTh8jC7UgkA3A
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