5v,6v psu? May 26, 2004 11:50:23 GMT -5 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by darkschneider on May 26, 2004 11:50:23 GMT -5 Extra rom holds high score info / other arcade only info (perhaps dip switch info?) In which case I don't suppose it would be 'read only'