# NES / Famicom
## Code Example
```html
```
### BIOS
| File Name | Description | md5sum |
| ----------- | ------------- | ----------- |
| disksys.rom | Family Computer Disk System BIOS -
Required for Famicom Disk System emulation | `ca30b50f880eb660a320674ed365ef7a` |
| gamegenie.nes | Game Genie add-on cartridge -
Required for Game Genei Add-on emulation
(Only supported on the fceumm core) | `7f98d77d7a094ad7d069b74bd553ec98` |
### CORES
The *nes* system supports 2 cores
- `fceumm`
- `nestopia`
If set to `nes`, emulator will use the `fceumm` core.