Libretro Wasm4 is a fantasy console emulator using WebAssembly.
¶ 
License
This core is under ISC license.
¶ 
Compatibility
| RPI0/RPI1 | RPI3 | RPI4/RPI400 | RPI5 | ODROID XU4 | OGA/OGS/RG351 | PC | RG353 |
|---|---|---|---|---|---|---|---|
| ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |
¶ 
Features
| Feature | Supported |
|---|
¶ 
BIOS
No bios is required.
¶ 
Roms
¶ Supported extensions
Roms must have the extension:
- .wasm
¶ Location
Put the roms like this:
┣ 📁 recalbox
┃ ┣ 📁 share
┃ ┃ ┣ 📁 roms
┃ ┃ ┃ ┣ 📁 wasm4
┃ ┃ ┃ ┃ ┣ 🗒 jeu.wasm
¶ 
Advanced configuration of the emulator
In order to keep your customized configurations during an upgrade, we recommend you use our Configuration overrides feature.
¶ Accessing options
You can configure various options in two different ways.
- Via the RetroArch Menu:
┣ 📁 RetroArch Menu
┃ ┣ 📁 Core options
┃ ┃ ┣ 🧩 Name_option
- Via the
retroarch-core-options.cfgfile:
┣ 📁 recalbox
┃ ┣ 📁 share
┃ ┃ ┣ 📁 system
┃ ┃ ┣ 📁 configs
┃ ┃ ┃ ┣ 📁 retroarch
┃ ┃ ┃ ┃ ┣ 📁 cores
┃ ┃ ┃ ┃ ┃ ┣ 🧩 retroarch-core-options.cfg
¶ Core options
| Options | Option values | Variable (for override) | Variable values |
|---|---|---|---|
| Pixel type | xrgb8888 ✅ / rgb565 |
wasm4_pixel_type |
xrgb8888 / rgb565 |
| Audio type | callback ✅ / normal |
wasm4_audio_type |
callback / normal |
| Frames to hold touch value | 5 / 10 ✅ / 20 / 30 |
wasm4_touchscreen_hold_frames |
5 / 10 / 20 / 30 |
¶ 
External links
- Source code used: https://github.com/aduros/wasm4/