NCDZPSP vs NeoCDRX

NCDZPSP is a Neo-Geo emulator within NJEmu, a collection covering CPS1, CPS2 and NEOGEO (CD) emulators for PSP. It is listed for PSP, PlayStation Vita and PPSSPP, with Neo Geo CD support and save states. The latest listed release is version 2.3.5, published May 11, 2018, with an NCDZPSP2.3.5.zip download. That release records a game-list limit of 512, cheat support, multilingual support and command hotkeys. Its ROM set uses MAME 0.152, with some hack and bootleg sets added. The README maps O to OK, X to Cancel and SELECT+START to the emulator menu. The 2.3.x series is described as experimental; its notes warn that added features reduce free memory, some games may require cache files and some may fail to start. AdHoc online play does not apply to NCDZPSP, so netplay is unavailable. The project is GPL-3.0 licensed, and source builds require PSPSDK 0.11.2, MSYS and Makefile edits.

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.