Mame Neogeo Bios -
By default, MAME looks for ROMs in C:\MAME\roms\ (Windows) or ~/mame/roms/ (Linux/Mac). You can change this in mame.ini.
Open MAME, press F5 to refresh the ROM list, or use a frontend like LaunchBox or RetroArch. Launch a NeoGeo game. You should see the SNK logo. mame neogeo bios
Message: neogeo.zip: required files are missing.
Cause: You are missing the BIOS, or your BIOS version is incorrect for the MAME version.
Fix: Download a neogeo.zip explicitly labeled for your MAME version. Do not mix BIOS sets from different MAME releases. By default, MAME looks for ROMs in C:\MAME\roms\