MelonDS

melonDS

Developer(s)	Arisotura Repository contributors
Latest version	1.1 [+] (Desktop) Beta 1.10.0 [+](Android)
Active	Yes
Platform(s)	Windows Linux macOS BSD Android (Unofficial) Nintendo Switch (Unofficial) PlayStation Vita (Unofficial)
Emulates	Nintendo DS Nintendo DSi
Accuracy	Medium-Accurate
Website	melonds.kuribo64.net
Support ($)	Patreon PayPal
Programmed in	C, C++
License	GPLv3
Source code	GitHub
Issue tracker	GitHub
BIOS/Keys	Required for DSi

melonDS is a free and open-source Nintendo DS/DSi emulator aiming for better performance than DeSmuME and to emulate Wi-Fi and local multiplayer capabilities. Its developer is Arisotura (formerly known as StapleButter/Luigi__), a former contributor to DeSmuME, and it is available as a libretro core since version 0.6. Its first commit on GitHub was on May 15, 2016.

Downloads

	Official Builds Also available on Github
	Dev Builds
	melonDS X432R+ fork — melonDS with upscaled 2D graphics and textures.
	WideMelon — Experimental widescreen build of melonDS that expands DS 3D viewports while keeping 2D layers and the touchscreen at native proportions.
	Source Play Store Unofficial melonDS Android port
	WatermelonDS Unofficial fork of melonDS-Android with dual-screen/external display support
	Release 6 GBATemp Thread Ported by Hydr8gon, and currently maintained by Generic (aka RSDuck), who added an ARM64 JIT and other improvements. (Unofficial)
	Vita port No longer maintained

Overview

As of 0.9.5, melonDS offers:

• Nearly complete core (CPU, video, audio...)
• JIT recompiler for fast emulation
• OpenGL renderer, 3D upscaling
• RTC, microphone, lid close/open
• Joystick support
• Savestates
• Many display position/sizing/rotation modes
• Wi-Fi: local wireless and online networking
• DSi emulation
• Camera support (DSi only)
• DLDI
• (WIP) GBA slot add-ons

...and more are planned.

Though it is not as mature as DeSmuME in some areas, it is a relatively simple emulator to use and has potential.

Cheats/BIOS/Tutorials

• Cheats Database
• DSi NAND/BIOS + Firmware
• DSi Tutorials

Issues

Like most emulators, development has been rocky with at one point the sole developer putting the project on a hiatus in May of 2018 leaving this to-do list for anyone who wished to contribute improving the emulator, which is still open-source. On July 2018 it was announced that development was going to continue for melonDS and has since shown potential.

There is very little to tweak in terms of improving performance (which can be a good or bad thing). This is mainly due to the developer's goal of accurate emulation rather than providing game-specific hacks.

The OpenGL renderer is still being worked on, meaning that there is a small chance some models/textures may not render correctly.

melonDSi

On October 15, 2019, Arisotura released the beta version of an emulator called melonDSi, an experimental melonDS branch for DSi emulation. It used to require a lot of files to be dumped to work (most of which were console-unique), but it has been reworked to require less files (namely, the DSi ARM7 and ARM9 BIOS, the DSi Firmware and a NAND dump). It has since been merged into the master branch and is available on melonDS 0.9.

Getting started

From the README on GitHub:

Firmware boot (not direct boot) requires a BIOS/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.

Possible firmware sizes

• 128KB: DSi/3DS DS-mode firmware (reduced size due to lacking bootcode)
• 256KB: regular DS firmware
• 512KB: iQue DS firmware

DS BIOS dumps from a DSi or 3DS can be used with no compatibility issues. DSi BIOS dumps (in DSi mode) are not compatible. Or maybe they are. I don't know.

As for the rest, the interface should be pretty straightforward. If you have a question, don't hesitate to ask, though!

These files can be found here. If you do choose to look elsewhere online for system files, be warned that there are old hacked dumps floating around that breaks if the WFC configurations are altered.

To use the OpenGL renderer, you must have at least OpenGL 3.1. More information can be found in this FAQ.

To use melonDS in DSi mode, you need extra files which can be found on this page.

System requirements

Main article: Computer specifications#Recommended Specifications

Gallery

• 
  Top: 2x the native resolution without OpenGL.
  Bottom: 2x the native resolution with OpenGL
• 
  Top: Native software render.
  Bottom: 4x the native resolution with OpenGL

External links

• The One That Flourished: A Look at melonDS 0.8 (By Dolphin tester JMC47, aka Justin M. Chadwick. 6 June 2019.)
• Official Discord server
• Official forums
• IRC

Nintendo DS emulators(edit)

• Windows: BizHawk • DeSmuME • melonDS • No$GBA
• Linux: BizHawk • DeSmuME • melonDS
• macOS: DeSmuME • melonDS
• BSD: melonDS
• Android: DraStic • DeSmuME_libretro • melonDS DS
• iOS: Delta • melonDS DS
• Web Browsers: DeSmuME
• DragonBox Pyra: DraStic
• Pandora: DraStic
• Wii: DeSmuME Wii
• Wii U: Virtual Console
• Switch: DeSmuME_libretro
• PSP: DeSmuME PSP
• PS Vita: DeSmuME_libretro
• PS4: DeSmuME_libretro
• Xbox: DesmumeX