I did a ton of reading up on this and it looks like it’s a problem with the pi version of FBA. I have the unibios working but when you try to access the startup menu (A+B+C) it gives you a screen with Neo Geo at the top and nothing else. It should show a menu of options, including setting the game to MVS or AES mode.

Has anyone successfully run the unibios with menu options? My goal is to be able to play games in AES mode with unibios options.

The attached image is what should be showing, but all I see now is the Neo Geo logo at the top.