I'm guessing this is a long shot, but this certainly looks like the place to ask

i have recently aquired an arcade cabinet that is sans-game board, and very generic. Rather than put a board in it, i'm looking at the options of fitting it with mame, of course. Rather the buy/build up a PC, I do have a G3 Powermac in the cupboard sitting idle. Since learning of MacMame, i had wondered if this was possible to drive my machine.
I'm guessing the biggest problem will be resolutions/refresh rates, i know on the PC it requires a dos level intercept driver to accomplish this, can anyone answer for me if the mac version is able to manipulate the video output signals in a similar fashion, or just no chance at all?
Thanks in advance!