melonDS is a work-in-progress Nintendo DS emulator aiming for better performance than DeSmuME and to emulate Wi-Fi and local multiplayer capabilities. It's developed by StapleButter, a former contributor to DeSmuME, and has been available as a libretro core since version 1.6.
- Official builds (Windows, Linux)
The sole developer put the melonDS project on a hiatus on May 2018. He left this to-do list for anyone who would wish to contribute to improving that emulator, which is still open-source. On July 2018 he announced that he was going to continue developing the emulator.
From the README on GitHub:
- melonDS requires BIOS/firmware copies from a DS. Files required:
- bios7.bin, 16KB: ARM7 BIOS
- bios9.bin, 4KB: ARM9 BIOS
- firmware.bin, 128/256/512KB: firmware
- Firmware boot requires a firmware dump from an original DS or DS Lite. DS firmwares dumped from a DSi or 3DS aren't bootable and only contain configuration data, thus they are only suitable when booting games directly.
- DS BIOS dumps from a 3DS can be used with no compatibility issues. DSi BIOS dumps should be usable too, provided they were dumped properly.
These files can be found here, just rename the bios to match.