> Well I don't know much about the system but there would be no reason for them to make > an alt rev of any game. That would contradict the whole point, having an exact arcade > game at home (except for credits).
there are a number of undumped games
while they're sometimes based off the same master revision of one of the arcade sets they contain various other changes which makes them unique pieces of code. Things like this menu aren't present in the arcade sets.
http://mamedev.emulab.it/haze/pics2018/sfzch.png
Warriors of Fate is a bit lazier and closer to just being the CPS1 version set to freeplay, but it's still a completely different compile of the code with different codepaths enabled etc.
they're far more significant 'alt revisions' than most of the clones in MAME.
I'm genuinely surprised they haven't all been tracked down and dumped at this point, especially as there are meant to be famous titles like SF2 for it.
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