MVSPSP vs NEO.emu

MVSPSP is a free, self-hosted emulator for Neo-Geo MVS and AES systems, with PSP as its supported platform. The repository is public under the GPL-3.0 license. Before playing, you must create a game cache; afterward, some files used to create that cache can be removed from the ZIP archive. The project describes modified builds compatible with HBL and identifies those versions as based on emulator releases 2.2.1 and 2.3.1. Version 2.2.0 added ROM sets supported through MAME 0.119 and bootleg sets supported by MAME Plus!. Build options include save and load states, AdHoc multiplayer, a command list, Japanese UI, and 32-bit UI drawing. AdHoc requires KERNEL_MODE, and the readme recommends disabling 32-bit drawing outside NCDZPSP to reduce memory use. PSP-2000 expanded memory is available when compiled with PSP_SLIM, while a cache remains required. The listed build environment is Cygwin with PSPSDK revision 2318.

NEO.emu has no write-up on Specifiction yet; its figures are above.