All Mame Bios Page
A BIOS file is essentially a collection of low-level instructions. When an arcade cabinet is powered on, the CPU doesn't know how to read the joystick or display graphics immediately. It looks to a specific address in memory where the BIOS chip resides.
The BIOS performs three critical functions that MAME must emulate:
If MAME attempts to run a game without the BIOS, it effectively tries to execute code on a brain-dead machine. The emulator knows the game code exists, but it has no bridge to communicate with the virtual hardware.
To truly own all MAME BIOS, your roms directory must contain these less common but equally essential files. Without them, specific game libraries will remain inaccessible. all mame bios
| BIOS Zip Name | Systems Covered | Example Games | | :--- | :--- | :--- | | atari900.zip | Atari 7800 / Atari 2600 arcade conversions | Food Fight, Joust 2 | | decocass.zip | Data East Cassette System | Burgertime, Bump 'n' Jump | | galgbios.zip | Galaga hardware (Namco) | Galaga '88 | | itech32.zip | I.Tech 32-bit Slot system | Shuffleshot, World Class Bowling | | megadriv.zip | Sega Mega Drive/Genesis-based arcade boards (Mega-Tech, Mega Play) | Mega-Tech: Sonic the Hedgehog | | nss.zip | Nintendo Super System (SNES arcade hardware) | Super Mario World arcade version | | pgm.zip | PolyGame Master (IGS) | Martial Masters, Knights of Valor | | playch10.zip | Nintendo PlayChoice-10 (NES arcade hardware) | Super Mario Bros. 3 arcade | | skns.zip | SNK Neo-Geo AES (home console) BIOS | Used for console-mode emulation | | taitof3.zip | Taito F3 System | Bubble Symphony, Cleopatra Fortune | | vgmplay.zip | Various sound chip BIOS | For playing back VGM music files | | vicdual.zip | VIC Dual system (Vic 20 based) | Various early 80s games |
Note on home computers: MAME also emulates Amiga, Atari ST, Commodore 64, and ZX Spectrum. These require computer system ROMs (e.g., amiga3000.zip, c64.zip). While not "arcade" BIOS per se, they are part of the "all BIOS" scope for a full MAME set.
If you have ever downloaded the latest version of MAME (Multiple Arcade Machine Emulator), loaded a classic game like Street Fighter II, Metal Slug, or The King of Fighters, only to be greeted by a black screen, a yellow warning triangle, or a cryptic error message—chances are you are missing a BIOS. A BIOS file is essentially a collection of
In the world of emulation, the term "BIOS" (Basic Input/Output System) is often misunderstood. For console emulators (like PlayStation or Game Boy Advance), the BIOS is a single, copyrighted file ripped from the hardware. For MAME, however, the story is far more complex. MAME doesn't emulate just one machine; it emulates thousands of arcade PCBs (Printed Circuit Boards), home computers, and consoles. Some of these systems rely on shared low-level code known as a BIOS.
This article is your complete encyclopedia on all MAME BIOS files. We will cover what they are, which ones are essential, how to manage them, legal considerations, and the common pitfalls that plague even seasoned users.
If you've ever tried to run a classic arcade game like Mortal Kombat, Neo Geo titles (Metal Slug, King of Fighters), or a home console game in MAME, you’ve probably run into the dreaded "Missing BIOS" error. If MAME attempts to run a game without
Don't worry. This post will explain everything you need to know about MAME BIOS files and how to get your games working properly.
If you don't want to manage BIOS files individually, download a "Non-Merged" ROM set. In a non-merged set, every game .zip file includes the BIOS it needs inside it. The downside? File sizes are larger, and there's duplication. But it's much simpler for beginners.
