# 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.