Libretro MAME2003_Plus (also called MAME 2003+ and mame2003-plus) is a Libretro arcade system emulator core that emphasizes 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
LicenseThis core is under MAME non-commercial license.
¶ Compatibility
Compatibility| RPI0/RPI1 | RPI2 | RPI3 | RPI4/RPI400 | ODROID XU4 | ODROID GO | PC x86 | PC x86_64 |
|---|---|---|---|---|---|---|---|
| ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |
¶ Features
Features| Feature | Supported |
|---|---|
| Saves | ✔ |
| States | Game-dependent |
| Rewind | ✔ |
| Netplay | ✔ |
| Native Cheats | ✔ |
| Controllers | ✔ |
| Multi-Mouse | ✔ |
¶ BIOS
BIOSBIOS romsets are not required when using "Full Non-Merged" arcade romsets. For "Split" and "Non-Merged" romsets, place the BIOS in the same directory as the game romset.
Note:
Place the bios in the directory:/recalbox/share/roms/mame/
or in its subdirectory if you use several Mame cores:/recalbox/share/roms/mame/Mame2003-Plus/
¶ Roms
Roms- Based on romset: 0.78-0.188 (MAME 0.78 as baseline with others ROMs based on higher MAME romsets)
- Size: 32gb
- Emulated romsets: 4941 (including clones, etc...)
- Active Sets: 4941
- Parents: 1089
- Clones: 2123
- Others: 1713
- BIOS: 16
- CHDs: 30
- Samples: 66 + 6 Optional "Soundtrack Samples"
- DatFile: You can find the dat file in your recalbox at location
/recalbox/share/bios/mame-plus/.
¶ Location
Put your roms like this:
┣ 📁 recalbox
┃ ┣ 📁 share
┃ ┃ ┣ 📁 roms
┃ ┃ ┃ ┣ 📁 mame
┃ ┃ ┃ ┃ ┣ 🗒 game.zip
┃ ┃ ┃ ┃ ┣ 📁 game
┃ ┃ ┃ ┃ ┃ ┣ 🗒 game.chd
You can also opt for a subdirectory (useful if you want to have a mame set for another core).
┣ 📁 recalbox
┃ ┣ 📁 share
┃ ┃ ┣ 📁 roms
┃ ┃ ┃ ┣ 📁 mame
┃ ┃ ┃ ┃ ┣ 📁 Mame 2003-Plus
┃ ┃ ┃ ┃ ┃ ┣ 🗒 game.zip
┃ ┃ ┃ ┃ ┃ ┣ 📁 game
┃ ┃ ┃ ┃ ┃ ┃ ┣ 🗒 game.chd
¶ Advanced configuration of the emulator
Advanced configuration of the emulatorTo 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 | mame2003-plus_autosave_hiscore | default / recursively |
| 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 |
| X-Y Device | mouse ✅ / pointer / lightgun / disabled | mame2003-plus_xy_device | mouse / pointer / lightgun / disabled |
| Input Interface | simultaneous ✅ / retropad / keyboard | mame2003-plus_input_interface | simultaneous / retropad / keyboard |
| Analog Deadzone | 0% / 5% / 10% / 15% / 20% ✅ / 25% / 30% / 35% / 40% / 45% / 50% / 55% / 60% / 65% / 70% / 75% / 80% / 85% / 90% / 95% | mame2003-plus_deadzone | 0 / 5 / 10 / 15 / 20 / 25 / 30 / 35 / 40 / 45 / 50 / 55 / 60 / 65 / 70 / 75 / 80 / 85 / 90 / 95 |
| Dip Switch/Cheat Input Ports | Disabled ✅ / Enabled | mame2003-plus_cheat_input_ports | disabled / enabled |
| Center Joystick Axis for Digital Controls | Enabled ✅ / Disabled | mame2003-plus_digital_joy_centering | 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 |
| Bypass Audio Skew | Enabled ✅ / Disabled | mame2003-plus_machine_timing | enabled / disabled |
| 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 |
| CPU Clock Scale | default ✅ / 25% / 30% / 35% / 40% / 45% / 50% / 55% / 60% / 65% / 70% / 75% / 80% / 85% / 90% / 95% / 105% / 110% / 115% / 120% / 125% | mame2003_cpu_clock_scale | default / 25 / 30 / 35 / 40 / 45 / 50 / 55 / 60 / 65 / 70 / 75 / 80 / 85 / 90 / 95 / 105 / 110 / 115 / 120 / 125 |
| 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% | mame2003-plus_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% |
¶ External links
External links- Progettosnaps: https://www.progettosnaps.net/
- Source code used: https://github.com/libretro/mame2003-plus-libretro/
- Libretro documentation: https://docs.libretro.com/library/mame2003_plus/
