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melonDS DS - RetroBIOS
Type libretro
Classification community_fork
Source https://github.com/JesseTG/melonds-ds
Upstream https://github.com/melonDS-emu/melonDS
Version 1.2.0
Profiled 2026-03-24
Cores melonds_ds
Systems nintendo-ds, nintendo-dsi
Technical notes

Libretro-specific remake using melonDS as a statically-linked library. DS mode has FreeBIOS/generated firmware fallback; DSi mode requires all native files. Core searches "melonDS DS/" subfolder first, then system root. In DSi mode, NDS BIOS (bios7/bios9) are also required alongside DSi BIOS. Firmware and NAND filenames are user-selectable via core options.

7 files | 4 required, 3 optional | 7 in repo, 0 missing | 3 with HLE fallback

bios7.bin -optional, HLE available : ARM7 BIOS

bios9.bin -optional, HLE available : ARM9 BIOS

firmware.bin -optional, HLE available : NDS firmware image

dsi_bios7.bin -required : DSi ARM7 BIOS

  • System: nintendo-dsi
  • Size: 64.0 KB
  • CRC32: 0x4316CC42
  • Validation: size
  • Source: src/libretro/config/console.cpp:333, melonDS:src/MemConstants.h:32,44
  • Platforms: batocera, lakka, retroarch, retrobat, retropie
  • Contains eMMC key-Y at offset 0x8308 for NAND init

dsi_bios9.bin -required : DSi ARM9 BIOS

  • System: nintendo-dsi
  • Size: 64.0 KB
  • CRC32: 0xBAE84F6C
  • Validation: size
  • Source: src/libretro/config/console.cpp:338, melonDS:src/MemConstants.h:32,45
  • Platforms: batocera, lakka, retroarch, retrobat, retropie

dsi_firmware.bin -required : DSi firmware image

  • System: nintendo-dsi
  • Source: src/libretro/config/console.cpp:352-358
  • Platforms: batocera, lakka, retroarch, retrobat, retropie
  • Filename configurable via core options; must have DSi firmware header

dsi_nand.bin -required : DSi NAND dump

  • System: nintendo-dsi
  • Source: src/libretro/config/console.cpp:378
  • Platforms: batocera, lakka, retroarch, retropie
  • Filename configurable via core options; 240MB or 245.5MB with optional no$cash footer

Generated on 2026-03-25T14:56:43Z