emulator: "FB Alpha 2012 CPS-2"
type: frozen_snapshot
source: "https://github.com/libretro/fbalpha2012_cps2"
upstream: "https://www.fbalpha.com"
profiled_date: "2026-03-19"
core_version: "v0.2.97.28"
display_name: "Arcade (FB Alpha 2012 CPS-2)"
cores:
  - fbalpha2012_cps2
systems:
  - cps2

notes: |
  Frozen snapshot of Final Burn Alpha v0.2.97.28 (circa 2012), CPS-2 only.
  NOT an alias of FBNeo — different codebase, different ROM set compatibility.
  Exists for RAM-constrained platforms (3DS, embedded). Most users should use FBNeo.

  CPS-2 has no system BIOS. Each game's ROM set is self-contained:
  68000 program ROMs + Z80 sound program + GFX ROMs + QSound samples.

  QSound is emulated in software (qs_c.c:QscInit, panning table + DSP emulation).
  No external QSound DSP ROM (dl-1425.bin) needed — unlike MAME, FBA emulates
  the QSound chip directly without requiring the DSP program ROM.

  Z80 sound program loaded from game ROM set into CpsZRom buffer (cps.c:451,
  BurnLoadRom). QSound samples loaded into CpsQSam. All from the game ZIP.

  Board PLDs (buf1, ioa1, prg2, rom1) referenced via A_BOARD_QSOUND_PLDS
  macro, all marked BRF_OPT. GAL/PAL dumps for hardware preservation only.
  Zero BRF_BIOS entries in entire codebase.

  ROM path: ROMs loaded from content directory (g_rom_dir, libretro.cpp).
  g_system_dir is set (line 988) but never used for any file loading.

  The .info note "BIOS files must be inside the ROM directory" is misleading —
  there are no BIOS files for CPS-2. Generic note across all FBA cores.

  need_fullpath=true, block_extract=true, extensions=zip.

files: []

exclusion_note: "CPS-2 arcade hardware has no system BIOS. QSound DSP emulated in software (qs_c.c). Each game ROM set is self-contained."