Libretro Mednafen_SuperGrafx is a standalone port of Mednafen PCE Fast for Libretro.
¶ 
License
This core is under GPLv2 license.
¶ 
Compatibility
| RPI0/RPI1 | RPI3 | RPI4/RPI400 | RPI5 | ODROID XU4 | OGA/OGS/RG351 | PC | RG353 |
|---|---|---|---|---|---|---|---|
| ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |
¶ 
Features
| Features | Supported |
|---|---|
| Restart | ✔ |
| Saves | ✔ |
| States | ✔ |
| Rewind | ✔ |
| Netplay | ✔ |
| Core Options | ✔ |
| RetroAchievements | ✔ |
| RetroArch Cheats | ✔ |
| Controls | ✔ |
| Remapping | ✔ |
| Multi-Mouse | ✔ |
¶ 
BIOS
¶ List of optional bios
| Filename | Description | MD5 | Provided |
|---|---|---|---|
| gexpress.pce | Game Express CD Card | 6d2cb14fc3e1f65ceb135633d1694122 | ❌ |
¶ Location
Put the bios like this:
┣ 📁 recalbox
┃ ┣ 📁 share
┃ ┃ ┣ 📁 bios
┃ ┃ ┃ ┣ 📁 pcengine
┃ ┃ ┃ ┃ ┣ 🗒 gexpress.pce
¶ 
Roms
¶ Supported extensions
Roms must have the extension:
- .m3u
- .pce
- .zip
- .7z
This system supports compressed roms in .zip/.7z format. However, be careful, it is only an archive.
The files contained in the .zip/.7z must correspond to the extensions mentioned above.
Moreover, each .zip/.7z file must contain only one compressed rom.
¶ Location
Put the roms like this:
┣ 📁 recalbox
┃ ┣ 📁 share
┃ ┃ ┣ 📁 roms
┃ ┃ ┃ ┣ 📁 pcengine
┃ ┃ ┃ ┃ ┣ 🗒 game.zip
The roms using No-Intro format are highly recommended.
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 |
|---|---|---|---|
| Color Palette | RVB ✅ / Composite |
sgx_palette |
RGB / Composite |
| Aspect Ratio | Auto ✅ / 6:5 / 4:3 |
sgx_aspect_ratio |
auto / 6:5 / 4:3 |
| Horizontal Overscan (352 Width Mode Only) | 300 / 302 / 304 / 306 / 308 / 310 / 312 / 314 / 316 / 318 / 320 / 322 / 324 / 326 / 328 / 330 / 332 / 334 / 336 / 338 / 340 / 342 / 344 / 346 / 348 / 350 / 352 ✅ |
sgx_hoverscan |
300 / 302 / 304 / 306 / 308 / 310 / 312 / 314 / 316 / 318 / 320 / 322 / 324 / 326 / 328 / 330 / 332 / 334 / 336 / 338 / 340 / 342 / 344 / 346 / 348 / 350 / 352 |
| Initial scanline | 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 / 26 / 27 / 28 / 29 / 30 / 31 / 32 / 33 / 34 / 35 / 36 / 37 / 38 / 39 / 40 |
sgx_initial_scanline |
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 / 26 / 27 / 28 / 29 / 30 / 31 / 32 / 33 / 34 / 35 / 36 / 37 / 38 / 39 / 40 |
| Last scanline | 208 / 209 / 210 / 211 / 212 / 213 / 214 / 215 / 216 / 217 / 218 / 219 / 220 / 221 / 222 / 223 / 224 / 225 / 226 / 227 / 228 / 229 / 230 / 231 / 232 / 233 / 234 / 235 / 236 / 237 / 238 / 239 / 240 / 241 / 242 ✅ |
sgx_last_scanline |
208 / 209 / 210 / 211 / 212 / 213 / 214 / 215 / 216 / 217 / 218 / 219 / 220 / 221 / 222 / 223 / 224 / 225 / 226 / 227 / 228 / 229 / 230 / 231 / 232 / 233 / 234 / 235 / 236 / 237 / 238 / 239 / 240 / 241 / 242 |
| Mouse Sensitivity | 0.25 / 0.50 / 0.75 / 1.00 / 1.25 ✅ / 1.50 / 1.75 / 2.00 / 2.25 / 2.50 / 2.75 / 3.00 / 3.25 / 3.50 / 3.75 / 4.00 / 4.25 / 4.50 / 4.75 / 5.00 |
sgx_mouse_sensitivity |
0.25 / 0.50 / 0.75 / 1.00 / 1.25 / 1.50 / 1.75 / 2.00 / 2.25 / 2.50 / 2.75 / 3.00 / 3.25 / 3.50 / 3.75 / 4.00 / 4.25 / 4.50 / 4.75 / 5.00 |
| Allow Opposite Directions | Disabled ✅ / Enabled |
sgx_up_down_allowed |
disabled / enabled |
| Disable Soft Reset (RUN+SELECT) | Disabled ✅ / Enabled |
sgx_disable_softreset |
disabled / enabled |
| Multitap 5-port Controller | Enabled ✅ / Disabled |
sgx_multitap |
enabled / disabled |
| P1 Default Joypad Type | 2 Buttons ✅ / 6 Buttons |
sgx_default_joypad_type_p1 |
2 Buttons / 6 Buttons |
| P2 Default Joypad Type | 2 Buttons ✅ / 6 Buttons |
sgx_default_joypad_type_p2 |
2 Buttons / 6 Buttons |
| P3 Default Joypad Type | 2 Buttons ✅ / 6 Buttons |
sgx_default_joypad_type_p3 |
2 Buttons / 6 Buttons |
| P4 Default Joypad Type | 2 Buttons ✅ / 6 Buttons |
sgx_default_joypad_type_p4 |
2 Buttons / 6 Buttons |
| P5 Default Joypad Type | 2 Buttons ✅ / 6 Buttons |
sgx_default_joypad_type_p5 |
2 Buttons / 6 Buttons |
| Turbo Hotkey Mode | Disabled ✅ / Toggle / Dedicated |
sgx_turbo_toggle |
disabled / switch / dedicated |
| Alternate Turbo Hotkey | Disabled ✅ / Enabled |
sgx_turbo_toggle_hotkey |
disabled / enabled |
| Turbo Delay | 1 / 2 / 3 ✅ / 4 / 5 / 6 / 7 / 8 / 9 / 10 / 11 / 12 / 13 / 14 / 15 |
sgx_turbo_delay |
1 / 2 / 3 / 4 / 5 / 6 / 7 / 8 / 9 / 10 / 11 / 12 / 13 / 14 / 15 |
| CD Image Cache (Restart) | Disabled ✅ / Enabled |
sgx_cdimagecache |
disabled / enabled |
| CD BIOS (Restart) | Games Express / System Card 1 / System Card 2 / System Card 3 ✅ |
sgx_cdbios |
Games Express / System Card 1 / System Card 2 / System Card 3 |
| Detect Games Express CD (Restart Required) | Enabled ✅ / Disabled |
sgx_detect_gexpress |
enabled / disabled |
| (CD) CD Speed | 1 ✅ / 2 / 4 / 8 |
sgx_cdspeed |
1 / 2 / 4 / 8 |
| (CD) ADPCM Volume % | 0 / 10 / 20 / 30 / 40 / 50 / 60 / 70 / 80 / 90 / 100 ✅ / 110 / 120 / 130 / 140 / 150 / 160 / 170 / 180 / 190 / 200 |
sgx_adpcmvolume |
0 / 10 / 20 / 30 / 40 / 50 / 60 / 70 / 80 / 90 / 100 / 110 / 120 / 130 / 140 / 150 / 160 / 170 / 180 / 190 / 200 |
| (CD) CDDA Volume % | 0 / 10 / 20 / 30 / 40 / 50 / 60 / 70 / 80 / 90 / 100 ✅ / 110 / 120 / 130 / 140 / 150 / 160 / 170 / 180 / 190 / 200 |
sgx_cddavolume |
0 / 10 / 20 / 30 / 40 / 50 / 60 / 70 / 80 / 90 / 100 / 110 / 120 / 130 / 140 / 150 / 160 / 170 / 180 / 190 / 200 |
| (CD) PSG Volume % | 0 / 10 / 20 / 30 / 40 / 50 / 60 / 70 / 80 / 90 / 100 ✅ / 110 / 120 / 130 / 140 / 150 / 160 / 170 / 180 / 190 / 200 |
sgx_cdpsgvolume |
0 / 10 / 20 / 30 / 40 / 50 / 60 / 70 / 80 / 90 / 100 / 110 / 120 / 130 / 140 / 150 / 160 / 170 / 180 / 190 / 200 |
| Force SuperGrafx Emulation (Restart Required) | Disabled ✅ / Enabled |
sgx_forcesgx |
disabled / enabled |
| No Sprite Limit | Disabled ✅ / Enabled |
sgx_nospritelimit |
disabled / enabled |
| CPU Overclock Multiplier (Restart) | 1 ✅ / 2 / 3 / 4 / 5 / 6 / 7 / 8 / 9 / 10 / 20 / 30 / 40 / 50 |
sgx_ocmultiplier |
1 / 2 / 3 / 4 / 5 / 6 / 7 / 8 / 9 / 10 / 20 / 30 / 40 / 50 |
¶ Core options
¶ 
External links
- Source code used: https://github.com/libretro/beetle-supergrafx-libretro/
- Libretro documentation: https://docs.libretro.com/library/beetle_sgx/