Download a "1.0.0.3" (or later) FBNeo-compatible set. Check BIOS: Ensure neogeo.zip is in the folder. Use Non-Merged: Use non-merged sets for best compatibility. If you'd like, I can: Show you where to find the best ROM set resources Provide a guide on how to use ClrMamePro for rebuilding
By following these steps, you’ll turn that "unknown" status into a "loading" screen. Arcade emulation requires precision, but once your library is matched to the FBNeo database, it’s the most accurate way to play the classics. romset is unknown fbneo fixed