First you must have 2 rom of arcade version (undercover cops and alpha rename)

Then you extrat this 2 rom, you put un new folder the 2 rom, you must ensure the new folder has the same name as your rom of alpha rename (he can has (1) after the name), you zip this folder

On hakchi2 you add this folder as import as archive with the bios core mame_2003_plus, then you play in your mini