Hey all, I have a IPAC 4 card from Ultimarc. Players 1, 2, and 3 work but player 4 does not work at all. I used a keyboard tester program and all buttons do work on it. Is there something I have to do in the MAME program?? I have heard of controller mapping, but I have searched around and found it in the properties menu but nothing there for buttons and joysticks. I have MAME 32 version 104 installed. Thanks, Curt.