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User guide: BIOS files

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clobber edited this page Feb 6, 2021 · 38 revisions

Important: Do not manually copy a file to your BIOS folder. If files aren't automatically copying, that means you have incorrect files. Please follow the guide below.

In order to emulate some systems, BIOS files are needed due to increasing complexity of the hardware and software of modern gaming consoles. If the core you are currently trying to use needs a BIOS file, OpenEmu will alert you with a popup message. Before installing a BIOS file, make sure that its associated core plugin is installed and the MD5 hash is correct, or it will not work! Installing a BIOS is as simple as adding a game to OpenEmu, just drag-and-drop a BIOS onto your library!

You can check the hash of your file by opening Terminal.app, typing md5 /path/to/file and pressing Enter. Instead of typing the file path in manually, you can just drag the file onto the Terminal window.

Required BIOS Files for Cores

System Core BIOS/Firmware Info
Atari 5200 Atari800 5200.rom or [BIOS] Atari 5200 (USA).a52
MD5: 281f20ea4320404ec820fb7ec0693b38
Atari Lynx Mednafen lynxboot.img or lynxa.bin or [BIOS] Atari Lynx (USA, Europe).lnx
MD5: fcd403db69f54290b51035d82f835e7b
ColecoVision CrabEmu coleco.rom or 313 10031-4005 73108a.u2 or
[BIOS] ColecoVision (USA, Europe).col
MD5: 2c66f5911e5b42b8ebe113403548eee7
Famicom Disk System Nestopia disksys.rom or rp2c33a-01a.bin or
[BIOS] Family Computer Disk System (Japan) (Rev 1).bin
MD5: ca30b50f880eb660a320674ed365ef7a
Intellivision Bliss Executive ROM
exec.bin or [BIOS] Intellivision Executive ROM (World).int
MD5: 62e761035cb657903761800f4437b8af

Graphics ROM
grom.bin or ro-3-9503-003.u21 or
[BIOS] Intellivision Graphic ROM (World).int
MD5: 0cd5946c6473e42e8e4c2137785e427f

Intellivoice ROM
ivoice.bin or sp0256-012.bin (Optional)
MD5: d5530f74681ec6e0f282dab42e6b1c5f

Entertainment Computer System ROM
ecs.bin (Optional)
MD5: 2e72a9a2b897d330a35c8b07a6146c52
Odyssey² / Videopac O2EM o2rom.bin or o2bios.rom or [BIOS] Magnavox Odyssey2 (USA, Europe).bin
MD5: 562d5ebf9e030a40d6fabfc2f33139fd
PC-FX Mednafen PC-FX BIOS (v1.00 - 2 Sep 1994)
pcfx.rom or pcfxbios.bin
MD5: 08e36edbea28a017f79f8d4f7ff9b6d7
PlayStation Mednafen SCPH-5500 (v3.0 09/09/96 Japan)
ps-30j.bin or scph5500.bin
MD5: 8dd7d5296a650fac7319bce665a6a53c

SCPH-5501 (v3.0 11/18/96 America)
ps-30a.bin or scph5501.bin or scph7003.bin
MD5: 490f666e1afb15b7362b406ed1cea246

SCPH-5502 (v3.0 01/06/97 Europe)
ps-30e.bin or scph5502.bin or scph5552.bin
MD5: 32736f17079d0b2b7024407c39bd3050
Sega CD / Mega-CD Genesis Plus GX Model 1 (v1.00 921027 Europe)
BIOS_CD_E.bin or megacd_model1_bios_1_00_e.bin or
[BIOS] Mega-CD (Europe) (v1.00).md or [BIOS] Mega-CD (Europe).md
MD5: e66fa1dc5820d254611fdcdba0662372

Model 1 (v1.00p Rev E 911217 Japan)
BIOS_CD_J.bin or epr-14088e.bin or
[BIOS] Mega-CD (Japan) (v1.00P).md or [BIOS] Mega-CD (Japan) (Rev E).md
MD5: 278a9397d192149e84e820ac621a8edd

Model 1 (v1.10 Rev B 921011 USA)
BIOS_CD_U.bin or mpr-15045b.bin or
[BIOS] Sega CD (USA) (v1.10).md or [BIOS] Sega CD (USA) (Rev B).md
MD5: 2efd74e3232ff260e371b99f84024f7f
Sega Saturn Mednafen Sega Saturn BIOS (v1.01 941228 Japan)
sega_101.bin
MD5: 85ec9ca47d8f6807718151cbcca8b964

Sega Saturn BIOS (v1.01a 941115 NA/EU)
mpr-17933.bin
MD5: 3240872c70984b6cbfda1586cab68dbe
SNES BSNES Only required for the games SD Gundam GX (DSP3), Hayazashi Nidan Morita Shogi (ST011), and Hayazashi Nidan Morita Shogi 2 (ST018).

DSP3 coprocessor
dsp3.rom
MD5: 484908d68405d44e2be757b4e1e75d15

ST011 coprocessor
st011.rom
MD5: 5c209ce0283632b6574ad835bf862bee

ST018 coprocessor
st018.rom
MD5: dafae0e0c71c924075811c595c61a30e
SNES Satellaview Snes9x Satellaview BS-X BIOS (Japanese)
BS-X.bin or BS-X - Sore wa Namae o Nusumareta Machi no Monogatari (Japan) (Rev 1).sfc (Optional)
MD5: fed4d8242cfbed61343d53d48432aced

Satellaview BS-X BIOS (English + No DRM patched)
BS-X BIOS (English) [No DRM] [2016 v1.3].sfc (Recommended)
MD5: 96cf17bf589fcbfa6f8de2dc84f19fa2
TurboGrafx-CD / PC Engine CD Mednafen Super CD-ROM System (v3.0 Japan)
syscard3.pce or [BIOS] Super CD-ROM System (Japan) (v3.0).pce
MD5: 38179df8f4ac870017db21ebcbf53114

Note: The Japan BIOS is required because the US version won't play some Japan region games (e.g. Mirai Shounen Conan, Sylphia).

Important: Dumps of syscard3.pce containing a 512-byte copier header are considered "bad" and will not import. If you have the version with the MD5 hash ff1a674273fe3540ccef576376407d1d, run the following command in Terminal to convert it to the "good" version:

dd bs=512 skip=1 if=syscard3.pce of=syscard3fix.pce
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