I don't know coinops using what PS1 emulator. But ahm.. may be using a PCSXBOX, I guess. Anyway, you know PCSXBOX has a lot of option to play games well. http://forums.xbox-scene.com/index.php?showtopic=69250 This site help how can I mix option to play games well. And the BIOS and HLE mean a part of start option of PCSXBOX. When I start to play games at first time, I can choose between BIOS mode and HLE mode. According to the site, "Super Robot Wars Alpha : Yes, Works in BIOS mode PERFECTLY. Freezes the controls in HLE mode. - deusprogrammer" Actually I have got a problem to play "Super Robot Wars Alpha(PS1)" with coinops. That was freeze when I clear 1 stage. So I try to found other games which use only BIOS mode. That was a Cool boders 3. "Cool Boarders 3 Works only in BIOS, Not in HLE, 100% in BIOS - Gonzo_PhD " If coinops can play Cool boarders 3, just using BIOS mode instead of HLE, I think. So I renamed Super Robot Wars to Cool boders 3, but it was same freeze when I clear 1 stage. It is difficult up to compatabilty of PS1 in short time. I just hope coinops add list Super Robot Wars Alpha at next time. Thank you very much BP.