piFBA (fba2x) - RetroBIOS

Type	standalone
Classification	Frozen snapshots
Source	https://github.com/recalbox/pifba
Upstream	https://github.com/finalburn/fbalpha-fork
Version	0.2.97.x
Profiled	2026-10-04
Cores	fba2x, pifba
Systems	arcade, snk-neogeo-mvs, snk-neogeo-aes, capcom-cps1, capcom-cps2, capcom-cps3, igs-pgm
Checked by	md5

Technical notes

Recalbox's standalone ARM port of Final Burn Alpha, lineage pifba (originally by Franxis / Oopsware for the GP2X, modernised to SDL2 by Recalbox). The binary is installed as fba2x and runs with a ZIP path on the command line (rpi/main.cpp:187, "Usage: fba2x <path to rom><shortname>.zip").

BIOS and ROM archives are resolved relative to szAppRomPath, hardcoded to "roms/" in rpi/bzip.cpp:4 and overridden only through the rom path argument. BzipOpen (rpi/bzip.cpp:360-394) iterates BurnDrvGetZipName for every BIOS/parent slot and opens "<roms/><name>" directly: no fallback directory walking. Inside the opened archives each ROM is located by its CRC32 first and by its names only when no member carries that CRC (rpi/bzip.cpp:82-111), so member names are free.

Shared BIOS ROM sets flagged BDF_BOARDROM in the driver source: - neogeo (burn/neogeo/d_neogeo.cpp), SNK Neo Geo system BIOS - pgm (burn/pgm/d_pgm.cpp), IGS PGM board BIOS

CPS1 and CPS2 titles embed their program/encryption ROMs directly in each game archive: no CPS board BIOS zip. CPS3 (burn/cps3/d_cps3.cpp) carries the SH-2 BIOS as a BRF_BIOS member of each game's archive (red-earth, jojo, sfiii, etc.), so there is no shared cps3.zip here either.

pifba is a FROZEN snapshot of Final Burn Alpha 0.2.97.x with ARM-specific speedhacks (NEOGEO_HACKS, OOPSWARE_FIX, USE_SPEEDHACKS) and a reduced driver set compared with upstream FBA / FBNeo: 32 BIOS entries in d_neogeo.cpp vs ~45 in modern FBNeo, no newer Neo Geo UniBios revisions (uni-bios.10 through uni-bios.13 are commented out), no Hyper Street Fighter 2 refresh, and no SNK Hyper NeoGeo 64. Keep this separate from fbalpha2012 (libretro port of the same base) because it does not share binaries or load behaviour.

2 files | 2 required, 0 optional | 2 in repo, 0 missing Categories: 2 BIOS ZIPs

neogeo.zip required in repo bios_zip
SNK Neo Geo system BIOS ROM set

• System: snk-neogeo-mvs
• Source: burn/neogeo/d_neogeo.cpp:679-731, burn/neogeo/d_neogeo.cpp:880-884
• Platforms: emudeck, lakka, recalbox, retroarch, retrodeck, retropie, romm
• Contents (19 entries):
  • vs-bios.rom -128.0 KB
  • usa_2slt.bin -128.0 KB
  • asia-s3.rom -128.0 KB
  • sp1.jipan.1024 -128.0 KB
  • neo-po.bin -128.0 KB
  • neo-epo.bin -128.0 KB
  • neodebug.bin -128.0 KB
  • sp-s2.sp1 -128.0 KB
  • uni-bios.rom -128.0 KB
  • sp-e.sp1 -128.0 KB
  • ... and 9 more

pgm.zip required in repo bios_zip
IGS PGM (Polygame Master) System BIOS ROM set

• System: igs-pgm
• Source: burn/pgm/d_pgm.cpp:245-258, rpi/bzip.cpp:94-99
• Platforms: lakka, retroarch, retropie, romm
• The three ROMs are matched by CRC32 before any name, so an archive holding them as pgm_p01s.u20, pgm_t01s.rom and pgm_m01s.rom is accepted.
• Contents (3 entries):
  • pgm_p01s.rom -128.0 KB
  • pgm_t01s.rom -2.0 MB
  • pgm_m01s.rom -2.0 MB

Generated on 2026-10-10T11:26:01Z