# Nintendo DS
## Code Example
```html
```
## ROM Type
Your **ROM** can have the following extensions:
- `nds`
- `bin` (desmume2015 core only)
### BIOS (melonds core only)
| File Name | Description | md5sum |
| ----------- | ------------- | ----------- |
| bios7.bin | NDS ARM7 BIOS - Required | df692a80a5b1bc90728bc3dfc76cd948 |
| bios9.bin | NDS ARM9 BIOS - Required | a392174eb3e572fed6447e956bde4b25 |
| firmware.bin | NDS Firmware - Required | 145eaef5bd3037cbc247c213bb3da1b3 |
| dsi_bios7.bin | DSi ARM7 BIOS - Optional | |
| dsi_bios9.bin | DSi ARM9 BIOS - Optional | |
| dsi_firmware.bin | DSi Firmware - Optional | |
| dsi_nand.bin | DSi NAND - Optional | |
| dsi_sd_card.bin | DSi SD Card - Optional | |
### CORES
The *nds* system supports 2 cores
- `melonds`
- `desmume2015`
If set to `nds`, emulator will use the `melonds` core.