NeoCDRX vs NeoDS

NeoCDRX is a free homebrew emulator for Neo Geo CD and CDZ games on GameCube, Wii and Wii U through Virtual Wii. It supports region settings for USA, Europe and Japan, which provide different languages and can affect some game content. The listed processor cores are Z80 3.6 and M68000 3.3, and audio controls include a three-band equalizer for music and sound effects. Supported controllers include Wii Remote, Wii Remote Plus, Wii Remote with Nunchuk and GameCube controller. Media options include SD/SDHC, USB and DVD, plus GameCube options WKF and IDE-EXI V1. Virtual memory card saves can go to SD or USB, or to a physical GameCube memory card. Setup requires a Neo Geo CD/CDZ BIOS file named NeoCD.bin in NeoCDRX/bios. Each game goes in its own folder under NeoCDRX/games, with an mp3 subfolder for music. Wii and Wii U Virtual Wii installations are packaged for Homebrew Channel; using the Wii version requires a way to run unsigned code. The README describes the project as GPL open source, while GitHub lists LGPL-2.1.

NeoDS is a Nintendo DS emulator for NeoGeo AES and MVS games. It emulates the M68000 and Z80 CPUs, graphics, ADPCM and PSG audio, as well as NeoGeo protection and encryption. NeoDSConvert converts NeoGeo ROM sets into .neo files, and the emulator uses the same ROM sets as MAME. The documented setup requires a Nintendo DS Lite and a DLDI-compatible flash card. A Slot-2 flash card with RAM is optional and can improve the speed of some games. The emulator supports button remapping, normal or scaled video, CPU underclocking, and saving configuration and SRAM to the flash card; its graphical interface is operated with a stylus. It does not emulate FM audio, raster effects or multiplayer, and some timings are not very accurate. The repository describes the project as a fork of a 2008 NeoDS release being updated to 2026 MAME sets. The emulator is free to use for non-commercial purposes; save states appear in the README’s TODO list rather than as a supported feature.