Do you think it's something in the settings that's causing black screens for all the roms ?
Because the roms do seem to be fine. The ones I tested were, Mario party 1,2 and 3. US and E versions. Mario Golf US, Mario Tennis US and E , Mario 64 and Mario Kart.
By reading the compatibillity thread, they all play perfect exccept Mario Tennis I think ?
But for me , every time I load a rom up , you see it loading and goes past 100% and then it looks like the game is about to load up, but it's just a black screen.
And it just stays black for ever .