Bios For Open Emu

Updated 4/21/20

Bios For Openemu

Sep 20, 2018 This includes 33 BIOS files for the emulator OpenEmu. These 33 BIOS files are the ones needed in OpenEmu versions and 2.0.7. Earlier OpenEmu versions than do not require all of these files, since version added Sega Saturn support. Most of the other files are for systems whose support was introduced in OpenEmu version 2.0.1. Oct 15, 2017 OpenEmu requires the BIOS files for Sony Playstation to be available. You can download the Playstation BIOS files from the OpenEmu website. Do not try placing the BIOS files anywhere in your system core - instead simply drag the three BIOS files into OpenEmu and the app will do the rest.

I've written in the past about emulation and OpenEmu, a multi-console emulator front end that uses multiple emulation cores to provide a unified experience to macOS (OS X) emulation.

OpenEmu also sports MAME Arcade emulation support, but its a bit tucked away.

Step 1: Download OpenEmu Experimental

Go to and click the swatch and download OpenEmu Experimental, and install it.

Openemu Psx Bios

This scfeenshot of the OpenEMU site is old. The design on the OpenEMU website has slightly modified to make the experimental version easier to find

Step 2: Install the MAME core

Bios for open emu download

Once installed, launch OpenEmu, open preferences, and select cores. Click the install button next to MAME.

Step 3: Install games

Games can be nabbed from the usual suspects like emuparadise (defunct), the legality of this is fairly grey. OpenEmu only supports zipped ROMs, so if the ROM comes in a .gz or .rar, be sure to decompress its contents and rezip it. Name it the exact name as before (but with the new extension of zip). OpenEmu's MAME core is version 0.149.1, so its significantly behind the windows version (from 2013 to be exact). Some sites will list the earliest known support needed for the rom in question.

Notably, you'll want access to the dipswitches, hitting F2 repeatedly while the game is launching will take you to most ROM bios screens that enable modes like free play. Note, I had issues resuming games and had to force quit MAME resuming so you may want to hold off resuming games.

Optional: NeoGeo Emulation

Emulating NeoGeo games requires one extra step, you'll need to get the NeoGeo ROM, the one I used is from emuparadise which is now defunct, try a popular search engine and search 'Neo Geo BIOS'. Drag the Neo Geo zip into OpenEmu. You'll see the NeoGeo ROM in your game list, but ignore it and double-click the games as you normally would. The straw king pdf free download.

Good luck with OpenEmu. I suggest checking out the Dolphin Emulator as it has a great macOS port for GameCube and Wii, and PCSX2 for Windows for Playstation 2 emulation. Both are able to play old games in HD and UHD depending on your CPU/GPU.

Openemu Playstation Bios


Other recommendations from this blog:

  • Running up MAME Arcade emulation with MAME/MESS - How to set up the most current version of MAME on MacOS. OpenEMU's MAME core is 7+ years old, and there are quite a bit of newer arcade games supported in more recent versions.
  • Installing Provenance on iOS 11 with a Jailbreak - Provenance is an iOS multi-console emulator based off of OpenEMU, supporting consoles from the 8 bit and 16-bit eras. The step process hasn't changed for iOS 13.

Bios For Open Emu Attack

Updates: 4/21/20 - copy editing, note about layout change on OpenEMU's website, striking out emuparadise as its now defunct.