Concerning kof2003 on mame version of FBAXXX I think you should try this (quote from FBAXXX forum mod): If you want to play kof2003b or kof2k3ba in arcade mode: - Use UNIBIOS (not necesarilly autounibios since i'm not using it) - Load the game first time (with this damn 3min because of swap misses) - go to GENERAL BIOS SETTINGS - check "Disable BootUp HW Test" -Exit the game Now it will boot like any other game. I have not tested since my set is not complete but can you test and report if it is true?