ChimeraSNES - RetroBIOS¶
Technical notes
Based on multiple snes9x forks (uosnes, snes9x2005), optimized for slow hardware. All coprocessor data (DSP1-4, CX4, SuperFX, SA-1, SPC7110, OBC1) is HLE with embedded ROM tables. No external coprocessor firmware needed. BS-X BIOS loading controlled by core option chimerasnes_bsx_bios (default: skip). retro_load_game_special() returns false (no subsystem support). .info firmware_count absent (= 0), under-declares: code loads 2 files.
2 files | 1 required, 1 optional | 2 in repo, 0 missing
BS-X.bin optional in repo
Satellaview BS-X BIOS
- System: nintendo-satellaview
- Size: 1.0 MB
- Aliases:
BS-X.bios - Validation: size
- Source:
source/bsx.c:857-882 - Platforms: batocera, lakka, recalbox, retroarch, retrobat, retrodeck, retropie, romm
- Loaded by BSX_LoadBIOS() from system_dir when core option chimerasnes_bsx_bios is set to 'load' (default: skip). Tries BS-X.bin first, then BS-X.bios as fallback. Size must be BIOS_SIZE (0x100000). Many BS-X games run without it.
STBIOS.bin required in repo
Sufami Turbo BIOS
- System: nintendo-sufami-turbo
- Size: 256.0 KB
- Source:
source/memmap.c:275-289 - Platforms: batocera, lakka, recalbox, retroarch, retrobat, retrodeck, retropie, romm
- Loaded by LoadSFTBIOS() from system_dir when Sufami Turbo game detected (BANDAI SFC-ADX header at ROM offset 0, memmap.c:833). Reads 0x40000 bytes into Memory.ROM. No validation performed.
Generated on 2026-09-14T09:03:09Z