The Libretro MAME2003_Plus (also known as MAME 2003+ and mame2003-plus) is a Libretro arcade system emulator kernel that focuses on high performance and broad compatibility with mobile devices, single board computers, embedded systems and similar platforms.
In order to take advantage of the lower performance and hardware requirements of an earlier MAME architecture, MAME 2003-Plus started with the MAME 2003 code base, itself derived from MAME 0.78.
On this basis, MAME 2003-Plus contributors retro ported support for several hundred additional games, as well as other features not originally present in MAME 0.78.
¶ 
License
This core is under MAME non-commercial license.
¶ 
Compatibility
| RPI0/RPI1 | RPI3 | RPI4/RPI400 | RPI5 | ODROID XU4 | OGA/OGS/RG351 | PC | RG353 |
|---|---|---|---|---|---|---|---|
| ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |
¶ 
Features
| Feature | Supported |
|---|---|
| Saves | ✔ |
| States | game-dependent |
| Rewind | ✔ |
| Netplay | ✔ |
| Native Cheats | ✔ |
| Controllers | ✔ |
| Multi-Mouse | ✔ |
¶ 
BIOS
¶ List of mandatory bios
| Filename | Description | MD5 | Provided |
|---|---|---|---|
| neogeo.zip | Neo-Geo BIOS | e023d0a4b5249fdff2a4620c28963944 8cbdff53661f41ddbe486a98915e1ec9 42e359e394f0be1d61b94ddca0efbe6c c1e0a738d266926f604186aa9d63e4db d12bba59121229ff13702878b415cb7c 2b4ffdf24d5d4f24c4b116c50c4bafc3 005b843b6e70b939c2cca41887cbc371 42e359e394f0be1d61b94ddca0efbe6c 4b9432a4571d03cc8bae9d24d8d6eb40 4cd64313e26537c04cdb561b8f84b0e4 50bbfd6bf297038b085e29265c65723a 76ee7390ccd537cddea1018025ca29a8 84d6c35aad790a77ba3cfc1b319e1061 912c0a56bafe0fba39d0c668b139b250 94748719c0ef31e7375b0c357d82fc89 ab25b9e25052a6064901a7a221037eb6 ae9e5825cde82c58e39dfd48534f7060 b18f83feef474b8a1306ef199cd810a2 b4519df27a352c2a6e42e06d31330d91 bf00272e7150b31156a8995d60bf185d ca66fd463ef7dcab492a6de8ce5f45eb f4a125538dfd7a8044e025fc5188fb88 a3b2c9a69c28ad0bd4ea07877b744bbe | ❌ |
¶ Location
Put the bios like this:
┣ 📁 recalbox
┃ ┣ 📁 share
┃ ┃ ┣ 📁 roms
┃ ┃ ┃ ┣ 📁 neogeo
┃ ┃ ┃ ┃ ┣ 🗒 neogeo.zip
¶ 
Roms
¶ Supported extensions
Roms must have the extension:
- .zip
- .7z
¶ Location
Put the roms like this:
┣ 📁 recalbox
┃ ┣ 📁 share
┃ ┃ ┣ 📁 roms
┃ ┃ ┃ ┣ 📁 neogeo
┃ ┃ ┃ ┃ ┣ 🗒 game.zip
For more information about roms, go to this tutorial!
¶ 
Advanced configuration of the emulator
To be able to keep your custom configurations during an upgrade, we advise you to use our configuration override feature.
¶ Accessing to options
You can configure various options in two different ways.
- Via RetroArch menu:
┣ 📁 RetroArch Menu
┃ ┣ 📁 Core options
┃ ┃ ┣ 🧩 Name_option
- Via the file
retroarch-core-options.cfg:
┣ 📁 recalbox
┃ ┣ 📁 share
┃ ┃ ┣ 📁 system
┃ ┃ ┃ ┣ 📁 configs
┃ ┃ ┃ ┃ ┣ 📁 retroarch
┃ ┃ ┃ ┃ ┃ ┣ 📁 cores
┃ ┃ ┃ ┃ ┃ ┃ ┣ 🧩 retroarch-core-options.cfg
¶ Core options
| Options | Options values | Variables (for configuration override) | Variables values |
|---|---|---|---|
| Skip Disclaimer | Disabled ✅ / Enabled |
mame2003-plus_skip_disclaimer |
disabled / enabled |
| Skip Warnings | Disabled ✅ / Enabled |
mame2003-plus_skip_warnings |
disabled / enabled |
| Display MAME Menu | Disabled ✅ / Enabled |
mame2003-plus_display_setup |
disabled / enabled |
| Legacy Remapping | Enabled ✅ / Disabled |
mame2003-plus_mame_remapping |
enabled / disabled |
| Autosave Hiscore | default ✅ / recursively / Disabled |
mame2003-plus_autosave_hiscore |
default / recursively / disabled |
| Locate System Files Within a Subfolder | Enabled ✅ / Disabled |
mame2003-plus_core_sys_subfolder |
enabled / disabled |
| Locate Save Files Within a Subfolder | Enabled ✅ / Disabled |
mame2003-plus_core_save_subfolder |
enabled / disabled |
| Mouse Device | mouse ✅ / pointer / disabled |
mame2003-plus_mouse_device |
mouse / pointer / disabled |
| Input Interface | simultaneous ✅ / retropad / keyboard |
mame2003-plus_input_interface |
simultaneous / retropad / keyboard |
| Show Lightgun Crosshairs | Enabled ✅ / Disabled |
mame2003-plus_crosshair_enabled |
enabled / disabled |
| Lightgun Crosshair Appearance | simple ✅ / enhanced |
mame2003-plus_crosshair_appearance |
simple / enhanced |
| Allow Input Button to Act as a Toggle Switch | Enabled / Disabled |
mame2003-plus_input_toggle |
enabled / disabled |
| Center Joystick Axis for Digital Controls | Enabled ✅ / Disabled |
mame2003-plus_digital_joy_centering |
enabled / disabled |
| Use Samples | Enabled ✅ / Disabled |
mame2003-plus_use_samples |
enabled / disabled |
| Sample Rate | 8000 KHz / 11025 KHz / 22050 KHz / 30000 KHz / 44100 KHz ✅ / 48000 KHz |
mame2003-plus_sample_rate |
8000 / 11025 / 22050 / 30000 / 44100 / 48000 |
| Brightness | 0.2 / 0.3 / 0.4 / 0.5 / 0.6 / 0.7 / 0.8 / 0.9 / 1.0 ✅ / 1.1 / 1.2 / 1.3 / 1.4 / 1.5 / 1.6 / 1.7 / 1.8 / 1.9 / 2.0 |
mame2003-plus_brightness |
0.2 / 0.3 / 0.4 / 0.5 / 0.6 / 0.7 / 0.8 / 0.9 / 1.0 / 1.1 / 1.2 / 1.3 / 1.4 / 1.5 / 1.6 / 1.7 / 1.8 / 1.9 / 2.0 |
| Gamma Correction | 0.5 / 0.6 / 0.7 / 0.8 / 0.9 / 1.0 ✅ / 1.1 / 1.2 / 1.3 / 1.4 / 1.5 / 1.6 / 1.7 / 1.8 / 1.9 / 2.0 |
mame2003-plus_gamma |
0.5 / 0.6 / 0.7 / 0.8 / 0.9 / 1.0 / 1.1 / 1.2 / 1.3 / 1.4 / 1.5 / 1.6 / 1.7 / 1.8 / 1.9 / 2.0 |
| TATE Mode | Disabled ✅ / Enabled |
mame2003-plus_tate_mode |
disabled / enabled |
| Frameskip | Disabled ✅ / 1 / 2 / 3 / 4 / 5 / 6 / 7 / 9 / 10 / 11 / auto / auto aggressive / auto max |
mame2003-plus_frameskip |
disabled / 1 / 2 / 3 / 4 / 5 / 6 / 7 / 9 / 10 / 11 / auto / auto_aggressive / auto_max |
| Display Artwork | Enabled ✅ / Disabled |
mame2003-plus_display_artwork |
enabled / disabled |
| Resolution Multiplier | 1 ✅ / 2 |
mame2003-plus_art_resolution |
1 / 2 |
| Hardcoded Overlay Opacity | default ✅ / 0 / 1 / 2 / 3 / 4 / 5 / 6 / 7 / 8 / 9 / 10 / 11 / 12 / 13 / 14 / 15 / 16 / 17 / 18 / 19 / 20 / 21 / 22 / 23 / 24 / 25 / 50 / 70 |
mame2003-plus_art_overlay_opacity |
default / 0 / 1 / 2 / 3 / 4 / 5 / 6 / 7 / 8 / 9 / 10 / 11 / 12 / 13 / 14 / 15 / 16 / 17 / 18 / 19 / 20 / 21 / 22 / 23 / 24 / 25 / 50 / 70 |
| Specify Neo Geo BIOS | default ✅ / euro / euro-s1 / us / us-e / asia / japan / japan-s2 / unibios40 / unibios33 / unibios20 / unibios13 / unibios11 / unibios10 / debug / asia-aes |
mame2003_neogeo_bios |
default / euro / euro-s1 / us / us-e / asia / japan / japan-s2 / unibios40 / unibios33 / unibios20 / unibios13 / unibios11 / unibios10 / debug / asia-aes |
| CPU Clock Scale | default ✅ / 25% / 30% / 35% / 40% / 45% / 50% / 55% / 60% / 65% / 70% / 75% / 80% / 85% / 90% / 95% / 100% / 105% / 110% / 115% / 120% / 125% / 200% / 250% / 300% |
mame2003_cpu_clock_scale |
default / 25 / 30 / 35 / 40 / 45 / 50 / 55 / 60 / 65 / 70 / 75 / 80 / 85 / 90 / 95 / 100 / 105 / 110 / 115 / 120 / 125 / 200 / 250 / 300 |
¶ 
External links
- Source code used: https://github.com/libretro/mame2003-plus-libretro/