7beb651049
RetroDECK: core extras with subdirectory paths (e.g. vice/C64/,
fbneo/, dc/) were placed outside bios/ because the prefix was only
inferred for bare filenames. Add _detect_extras_prefix() to infer
the dominant BIOS prefix from YAML destinations.
RomM: core extras landed flat at bios/{file} instead of the required
bios/{platform_slug}/{file}. Add _detect_slug_structure() to detect
per-system slug layouts and _map_emulator_to_slug() to route each
extra to the correct slug subfolder.
Also skip manifest writes when only the generated timestamp changed,
preventing unnecessary diffs in install/*.json.
RetroBIOS
Complete BIOS and firmware packs for Batocera, BizHawk, EmuDeck, Lakka, Recalbox, RetroArch, RetroBat, RetroDECK, RetroPie, and RomM.
7,295 verified files across 396 systems, ready to extract into your emulator's BIOS directory.
Quick Install
Copy one command into your terminal:
# Linux / macOS / Steam Deck
curl -fsSL https://raw.githubusercontent.com/Abdess/retrobios/main/install.sh | sh
# Windows (PowerShell)
irm https://raw.githubusercontent.com/Abdess/retrobios/main/install.ps1 | iex
# Handheld (SD card mounted on PC)
curl -fsSL https://raw.githubusercontent.com/Abdess/retrobios/main/install.sh | sh -s -- --platform retroarch --dest /path/to/sdcard
The script auto-detects your platform, downloads only missing files, and verifies checksums.
Download BIOS packs
Pick your platform, download the ZIP, extract to the BIOS path.
| Platform | BIOS files | Extract to | Download |
|---|---|---|---|
| Batocera | 361 | /userdata/bios/ |
Download |
| BizHawk | 118 | Firmware/ |
Download |
| EmuDeck | 161 | Emulation/bios/ |
Download |
| Lakka | 448 | system/ |
Download |
| Recalbox | 346 | /recalbox/share/bios/ |
Download |
| RetroArch | 448 | system/ |
Download |
| RetroBat | 339 | bios/ |
Download |
| RetroDECK | 2006 | ~/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.
- 10 platforms supported with platform-specific verification
- 329 emulators profiled from source (RetroArch cores + standalone)
- 396 systems covered (NES, SNES, PlayStation, Saturn, Dreamcast, ...)
- 7,295 files verified with MD5, SHA1, CRC32 checksums
- 8765 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 362+ more.
Full list with per-file details: https://abdess.github.io/retrobios/
Coverage
| Platform | Coverage | Verified | Untested | Missing |
|---|---|---|---|---|
| Batocera | 361/361 (100.0%) | 361 | 0 | 0 |
| BizHawk | 118/118 (100.0%) | 118 | 0 | 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 | 339/339 (100.0%) | 339 | 0 | 0 |
| RetroDECK | 2006/2006 (100.0%) | 2006 | 0 | 0 |
| RetroPie | 448/448 (100.0%) | 448 | 0 | 0 |
| RomM | 374/374 (100.0%) | 374 | 0 | 0 |
Build your own pack
Clone the repo and generate packs for any platform, emulator, or system:
# Full platform pack
python scripts/generate_pack.py --platform retroarch --output-dir dist/
python scripts/generate_pack.py --platform batocera --output-dir dist/
# Single emulator or system
python scripts/generate_pack.py --emulator dolphin
python scripts/generate_pack.py --system sony-playstation-2
# List available emulators and systems
python scripts/generate_pack.py --list-emulators
python scripts/generate_pack.py --list-systems
# Verify your BIOS collection
python scripts/verify.py --all
python scripts/verify.py --platform batocera
python scripts/verify.py --emulator flycast
python scripts/verify.py --platform retroarch --verbose # emulator ground truth
Only dependency: Python 3 + pyyaml.
Documentation site
The documentation site provides:
- Per-platform pages with file-by-file verification status and hashes
- Per-emulator profiles with source code references for every file
- Per-system pages showing which emulators and platforms cover each console
- Gap analysis identifying missing files and undeclared core requirements
- Cross-reference mapping files across 10 platforms and 329 emulators
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
Contributors
Contributing
See CONTRIBUTING.md for guidelines.
License
This repository provides BIOS files for personal backup and archival purposes.
Auto-generated on 2026-03-31T20:38:37Z