Note: the DS-mode firmware in the 3DS isn't bootable. I intend to release a BIOS dumper to make this easier. melonDS requires BIOS/firmware copies from a DS. melonDS requires BIOS/firmware copies from a DS. The files must be placed in the same directory as the melonDS executable, as follows: * bios7.bin -- ARM7 BIOS, 16KB * bios9.bin -- ARM9 BIOS, 4KB * firmware.bin -- firmware, 256KB or 512KB . 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. Finding and downloading a bios off of the internet may be copyright infringement, and is not encouraged. Once you have your bios(es) dumped, they will be .bin and .rom files that look like this: Simply drop your bios(es) into the folder of your melonDS installation, found in the Emuloader folder and melonDS … If you try to dump the original DS firmware from a DSi you'll end up with a file that's useless for a DS … NAND, BIOS and firmware files go into /switch/melonds as well; ROM files can be placed anywhere on the sd card; For DS mode the following files are necessary (in parantheses is how they should be named for melonDS to recognises them): ARM9 BIOS (bios9.bin) ARM7 BIOS (bios7.bin) DS mode firmware (firmware.bin) But also to, you know, have a fun challenge :) The source code is provided under the GPLv3 license. melonDS requires BIOS/firmware dumps 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. Not everything is running yet, either, but we're getting there. I have made one attempt which can be found in the arm9timinghacks branch and it fixes a few games, though it's far from perfect. The DSi doesn't use a firmware like the one on the DS, instead all that is stored in the NAND. For one, direct boot will not work under DSi mode. The goal is to do things right and fast, akin to blargSNES (but hopefully better). MelonDS an open source Nintendo DS emulator has been released. melonDS requires BIOS/firmware copies from a DS. Note that this is still experimental. there are quite a few of games which depend on proper cache timings so we can't get around atleast approximating the right timing. melonDS does not yet emulate some hardware like the DSi cameras (but on the other hand, emulates DSi wifi). But I'm not sure where to place the files, and I put it in switch:/melonds but when I try run the … Binaries are available for Windows and Linux. 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. The files must be placed in the same directory as the melonDS executable, as follows: * bios7.bin -- ARM7 BIOS, 16KB * bios9.bin -- ARM9 BIOS, 4KB * firmware.bin -- firmware, 256KB or 512KB Note: the DS-mode firmware in the 3DS isn't bootable. So lately, I got the three files I need for the melonDS for my nintendo Switch; bios7.bin, 16KB: ARM7 BIOS bios9.bin, 4KB: ARM9 BIOS firmware.bin, 128/256/512KB: firmware.