> Does anyone know when MameCE3 will support the Cassiopeia e-200? I tried
> installing it and all I got when I loaded a game was a short black screen and
> then the launch screen again.
I don't know if it works properly on the Casio but it should at least get to the OK screen.
Your syptoms sound like you have not added any Game ROMs to the Roms folder.
MameCE3 does not contain any.
Try some of the older ones first, such as pacman, crazy kong, and temepest.