there very few known for me non working games, mostly NBA/NHL/NFL 2Kx
the rest works, including 4 Wheel Thunder, both PAL and US, original games in GDI
perhaps Demul doesn't like your's pirated version(s) ?
and yes, definitely someone needed to make compatibility list for scene/pirated/hacked/etc releases, which known to work fine on real console but does not on emulator.