resolve_platform_cores() builds reverse index from profile cores: field, fixing 17 name mismatches across Batocera, RetroBat, and Recalbox (genesisplusgx, pce_fast, pcfx, vb, mame078plus, vice cores, etc.). standalone_path field on file entries + standalone_cores on platform YAMLs enable mode-aware pack generation. find_undeclared_files() uses standalone_path for cores the platform runs standalone, filters by mode: libretro/standalone per file. batocera.yml gains standalone_cores (92 entries from configgen-defaults). generate_readme.py dynamically lists platforms from registry. 3 profiles updated for standalone type/path (mame, hatari, mupen64plus_next). 78 E2E tests pass, pipeline verified.
RetroBIOS
Complete BIOS and firmware packs for Batocera, EmuDeck, Lakka, Recalbox, RetroArch, RetroBat, RetroDECK, RetroPie, and RomM.
6,748 verified files across 305 systems, ready to extract into your emulator's BIOS directory.
Download BIOS packs
Pick your platform, download the ZIP, extract to the BIOS path.
| Platform | BIOS files | Extract to | Download |
|---|---|---|---|
| Batocera | 359 | /userdata/bios/ |
Download |
| EmuDeck | 161 | Emulation/bios/ |
Download |
| Lakka | 448 | system/ |
Download |
| Recalbox | 346 | /recalbox/share/bios/ |
Download |
| RetroArch | 448 | system/ |
Download |
| RetroBat | 331 | bios/ |
Download |
| RetroDECK | 2007 | ~/retrodeck/bios/ |
Download |
| RetroPie | 448 | BIOS/ |
Download |
| RomM | 374 | bios/{platform_slug}/ |
Download |
What's included
BIOS, firmware, and system files for consoles from Atari to PlayStation 3. Each file is checked against the emulator's source code to match what the code actually loads at runtime.
- 9 platforms supported with platform-specific verification
- 307 emulators profiled from source (RetroArch cores + standalone)
- 305 systems covered (NES, SNES, PlayStation, Saturn, Dreamcast, ...)
- 6,748 files verified with MD5, SHA1, CRC32 checksums
- 5251 MB total collection size
Supported systems
NES, SNES, Nintendo 64, GameCube, Wii, Game Boy, Game Boy Advance, Nintendo DS, Nintendo 3DS, Switch, PlayStation, PlayStation 2, PlayStation 3, PSP, PS Vita, Mega Drive, Saturn, Dreamcast, Game Gear, Master System, Neo Geo, Atari 2600, Atari 7800, Atari Lynx, Atari ST, MSX, PC Engine, TurboGrafx-16, ColecoVision, Intellivision, Commodore 64, Amiga, ZX Spectrum, Arcade (MAME), and 271+ more.
Full list with per-file details: https://abdess.github.io/retrobios/
Coverage
| Platform | Coverage | Verified | Untested | Missing |
|---|---|---|---|---|
| Batocera | 359/359 (100.0%) | 358 | 1 | 0 |
| EmuDeck | 161/161 (100.0%) | 161 | 0 | 0 |
| Lakka | 448/448 (100.0%) | 448 | 0 | 0 |
| Recalbox | 346/346 (100.0%) | 346 | 0 | 0 |
| RetroArch | 448/448 (100.0%) | 448 | 0 | 0 |
| RetroBat | 331/331 (100.0%) | 331 | 0 | 0 |
| RetroDECK | 2007/2007 (100.0%) | 2007 | 0 | 0 |
| RetroPie | 448/448 (100.0%) | 448 | 0 | 0 |
| RomM | 374/374 (100.0%) | 359 | 15 | 0 |
How it works
Documentation and metadata can drift from what emulators actually load. To keep packs accurate, each file is checked against the emulator's source code.
- Read emulator source code - trace every file the code loads, its expected hash and size
- Cross-reference with platforms - match against what each platform declares
- Build packs - include baseline files plus what each platform's cores need
- Verify - run platform-native checks and emulator-level validation
Documentation
Per-file hashes, emulator profiles, gap analysis, cross-reference: https://abdess.github.io/retrobios/
Contributors
Contributing
See CONTRIBUTING.md for guidelines.
License
This repository provides BIOS files for personal backup and archival purposes.
Auto-generated on 2026-03-25T23:43:15Z