Emulators
Arcade Systems • Consoles and PC Systems • Handheld Systems • Add-ons and Peripherals • Miscellaneous • Rom Folders - Quick Reference
This page describes the supported emulators and rom formats for each system.
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These are found in the "Verified" section of Package Manager, and will be installed in the 
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These are found in the "Expert" section of Package Manager and will be installed in the
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- Bios files are essential for some systems, should be named exactly as stated and placed in
/BIOSunless otherwise stated in the systems notes. Bios file names and extensions are case sensitive!
- The roms on the included Miyoo Mini SD Card are a mixed bag which can lead to incompatibility with some emulators. It is highly recommended to source your own roms to get the most out of the device.
- Rom folder names are case sensitive and differ in Onion vs the Stock Miyoo SD Card, copy your roms from system to system if coming from stock (copying the ‘Roms’ folder wholesale from the Miyoo SD card will not work).
- Subfolders can be used inside your rom folders but ONLY one level deep (i.e.
Roms/GB/Hacks). Subfolders are not compatible with miyoogamelist.xml. - Roms (and folders) with a dollar sign (
$) or apostrophe (') in the name are not supported, rename them. - If you add new roms to a system, highlight the system in the Games tab and press SELECT ›
Refresh all roms. - To add a game to your Favorites list, highlight the game in the game list and press SELECT ›
Add to favorites.
The details provided below are for guidance and not every emulator included in Onion has been documented.
Arcade emulation is a little more complex than your typical console emulation and includes MAME (Multiple Arcade Machine Emulator) along with CPS1/2/3 (Capcom Play System), SNK Neo Geo (released both as an Arcade cabinet and Home Console), FB (Final Burn) and Daphne.
While MAME supports many classic arcade games, for best compatibility and performance, it is recommended to use the CPS and Neo Geo systems (which use dedicated & customised emulators) for those particular games and MAME (or FB) for everything else.
Both MAME and FB require your romsets to be matched exactly to the emulator version so you will need to source the recommended romsets. MAME romsets are not compatible with FB cores (and vice versa) and not every game in a full romset will be playable but the majority will be.
Arcade roms in general do not play well with save states (some will work but the majority don’t), you can disable 'auto-loading of save states' in the Retroarch menu (and save content or core overrides). For more detailed information and tips on Arcade emulation, checkout the awesome Ultimate Miyoo Mini Arcade Guide for Onion by lordelan.
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button in the bottom left corner of the play window and choose ‘save link as’.
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For convenience, a list of Rom folder names for all fully supported cores is detailed below.
IMPORTANT
- If they do not already exist on your SD Card, Onion will create rom directories as required during first install.
- All names are case sensitive and may differ from the names on the stock Miyoo SD Card.
- This list does not include expert emulators.
| System | Rom Folder (Case Sensitive) |
|---|---|
| Amiga | AMIGA |
| Amstrad CPC | CPC |
| Arcade (Mame 2003+) | ARCADE |
| Atari 2600 | ATARI |
| Atari 5200 | FIFTYTWOHUNDRED |
| Atari 7800 | SEVENTYEIGHTHUNDRED |
| Atari Lynx | LYNX |
| Bandai Sufami Turbo | SUFAMI |
| Bandai WonderSwan & Color | WS |
| Capcom Play System 1 | CPS1 |
| Capcom Play System 2 | CPS2 |
| Capcom Play System 3 | CPS3 |
| ColecoVision | COLECO |
| Fairchild Channel F | FAIRCHILD |
| Famicom Disk System | FDS |
| Game & Watch | GW |
| GCE Vectrex | VECTREX |
| Magnavox Odyssey 2 | ODYSSEY |
| Mattel Intellivision | INTELLIVISION |
| Mega Duck | MEGADUCK |
| MS-DOS | DOS |
| MSX - MSX2 | MSX |
| NEC SuperGrafx | SGFX |
| NEC TurboGrafx CD | PCECD |
| NEC TurboGrafx-16 | PCE |
| Nintendo Entertainment System | FC |
| Nintendo Game Boy | GB |
| Nintendo Game Boy Advance | GBA |
| Nintendo Game Boy Color | GBC |
| Nintendo Pokemini | POKE |
| Nintendo Satellaview | SATELLAVIEW |
| Nintendo Super Game Boy | SGB |
| Nintendo Super Nintendo | SFC |
| Nintendo Virtual Boy | VB |
| PICO-8 | PICO |
| Ports collection | PORTS |
| ScummVM | SCUMMVM |
| Sega 32X | THIRTYTWOX |
| Sega CD | SEGACD |
| Sega Game Gear | GG |
| Sega Genesis | MD |
| Sega Master System | MS |
| Sega SG-1000 | SEGASGONE |
| Sinclair ZX Spectrum | ZXS |
| SNK NeoGeo | NEOGEO |
| SNK NeoGeo CD | NEOCD |
| SNK NeoGeo Pocket & Color | NGP |
| Sony Playstation | PS |
| TIC-80 | TIC |
| VideoPac | VIDEOPAC |
| Watara Supervision | SUPERVISION |