¶ 
License
This core is under BSD-3 license.
¶ 
Compatibility
| RPI0/RPI1 | RPI3 | RPI4/RPI400 | RPI5 | ODROID XU4 | OGA/OGS/RG351 | PC | RG353 |
|---|---|---|---|---|---|---|---|
| ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |
¶ 
Features
| Feature | Supported |
|---|
¶ 
BIOS
¶ List of optional bios
| Filename | Description | MD5 | Provided |
|---|---|---|---|
| aes.zip | Neo-Geo AES BIOS | ad9585c72130c56f04ae26aae87c289d 7a4dcd56b3924215aac7f903ff907339 | ❌ |
| neogeo.zip | Neo-Geo BIOS | 00dad01abdbf8ea9e79ad2fe11bdb182 912c0a56bafe0fba39d0c668b139b250 | ❌ |
¶ Location
Put the bios like this:
┣ 📁 recalbox
┃ ┣ 📁 share
┃ ┃ ┣ 📁 bios
┃ ┃ ┃ ┣ 📁 geolith
┃ ┃ ┃ ┃ ┣ 🗒 aes.zip
┃ ┃ ┃ ┃ ┣ 🗒 neogeo.zip
¶ 
Roms
¶ Supported extensions
Roms must have the extension:
- .neo
¶ Location
Put the roms like this:
┣ 📁 recalbox
┃ ┣ 📁 share
┃ ┃ ┣ 📁 roms
┃ ┃ ┃ ┣ 📁 neogeo
┃ ┃ ┃ ┃ ┣ 🗒 game.neo
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 |
|---|---|---|---|
| System Type (Restart) | Neo Geo AES (Home Console) ✅ / Neo Geo MVS (Arcade) / Universe BIOS (Community-enhanced BIOS) |
geolith_system_type |
aes / mvs / uni |
| Region (Restart) | USA ✅ / Japan / Asia / Europe |
geolith_region |
us / jp / as / eu |
| Setting Mode (Restart, DIP Switch) | Disabled ✅ / Enabled |
geolith_settingmode |
off / on |
| Four Player Mode (Restart, Asia/Japan MVS Only) | Disabled ✅ / Enabled |
geolith_4player |
off / on |
| Freeplay (DIP Switch) | Disabled ✅ / Enabled |
geolith_freeplay |
off / on |
| Mask Overscan (Top) | 16 / 12 / 8 ✅ / 4 / 0 |
geolith_overscan_t |
16 / 12 / 8 / 4 / 0 |
| Mask Overscan (Bottom) | 16 / 12 / 8 ✅ / 4 / 0 |
geolith_overscan_b |
16 / 12 / 8 / 4 / 0 |
| Mask Overscan (Left) | 16 / 12 / 8 ✅ / 4 / 0 |
geolith_overscan_l |
16 / 12 / 8 / 4 / 0 |
| Mask Overscan (Right) | 16 / 12 / 8 ✅ / 4 / 0 |
geolith_overscan_r |
16 / 12 / 8 / 4 / 0 |
| Aspect Ratio | Perfectly Square Pixels (1:1 PAR) ✅ / Ostensibly Accurate NTSC Aspect Ratio (45:44 PAR) / Very Traditional NTSC Aspect Ratio (4:3 PAR) |
geolith_aspect |
1:1 / 45:44 / 4:3 |
| Sprites-per-line limit (Hack) | Hardware Accurate (96) ✅ / Double (192) / Triple (288) / MAX 381 MEGA PRO-GEAR SPEC |
geolith_sprlimit |
96 / 192 / 288 / 381 |
| Overclocking (Hack) | Disabled ✅ / Enabled |
geolith_oc |
off / on |
¶ 
External links
- Source code used: https://github.com/libretro/geolith-libretro/
- Documentation Libretro :