OK, I'm confused now. Aren't you the same Renegade who owns this page? Using MAME and its extinct derivative MESS should be trivial by now unless you're referring to something else.
Or maybe you mean which sets do you need. That would be "psx_cd", "psj", "psa", "pse" and of course "psu". Then load for example "mame64.exe psu" on command line and go to File Manager and create your memory card nor load a CHD/CD image (MAME supports cue/bin files and I think .iso too). You can also use parameters -mc1 and -cdrom to load an specific game through command line or use the softlist if you have access to that large set.
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Re: ok, using mame then I have another question
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