NeoEMU v1534 was built during a specific era of ROM naming conventions. You use modern MAME 0.250 ROM sets. You need a "NeoEMU specific" or a "MAME 0.99" ROM set. Look for ROMs that are un-merged (each game has its own .zip containing all necessary files like sp-s2.sp1 , vs-bios.rom , etc.).
allow users to assign the app to specific processor cores, which can help save battery life during retro gaming sessions. Google Play Requirements and Compatibility neoemu v1534 neogeo arcade and home system
Recommended settings (general)