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MAME 2000 - RetroBIOS
Type libretro
Classification Frozen snapshots
Source https://github.com/libretro/mame2000-libretro
Upstream https://www.mamedev.org
Version 0.37b5
Profiled 2026-03-24
Cores mame2000
Systems snk-neogeo-mvs, deco-cassette
Technical notes

Frozen snapshot of MAME 0.37b5 via iMAME4All (David Valdeita). Fastest and least accurate MAME core. Supports ~2000 arcade games from the 0.37b5 ROM set.

BIOS handling follows MAME 0.37b5 conventions. Shared BIOS files are packaged as parent ROM ZIPs (e.g. neogeo.zip) and placed in the ROM directory alongside game ROMs. The core searches only the ROM directory for ROMs and BIOS sets.

Samples (per-game WAV files) are loaded from system_dir/mame2000/samples/. They provide sound effects for certain games and are optional.

hiscore.dat, history.dat and mameinfo.dat are loaded from the ROM directory. cheat.dat is loaded from system_dir/mame2000/cheat/. hiscore.dat and cheat.dat are bundled in the core repo (metadata/).

6 files | 2 required, 4 optional | 6 in repo, 0 missing Categories: 4 game data, 2 BIOS ZIPs

hiscore.dat optional in repo game_data

  • Source: src/hiscore.c:18,252-254
  • high score definitions, loaded from ROM directory

cheat.dat optional in repo game_data

  • Path: mame2000/cheat/cheat.dat
  • Source: src/cheat.c:210,618,830
  • cheat definitions, loaded from system_dir/mame2000/cheat/

history.dat optional in repo game_data

  • Source: src/datafile.c:52,281,541
  • game history database, loaded from ROM directory

mameinfo.dat optional in repo game_data

  • Source: src/datafile.c:53,281,568
  • game technical info database, loaded from ROM directory

neogeo.zip required in repo bios_zip

decocass.zip required in repo bios_zip

  • System: deco-cassette
  • Source: src/drivers/btime.c:1996-2005
  • Platforms: lakka, retroarch, retrodeck, retropie, romm
  • Contents (2 entries):
    • rms8.cpu -6502 BIOS -4.0 KB
    • rms8.snd -audio CPU -2.0 KB

Generated on 2026-04-03T20:37:39Z