I saw a post from someone saying that superfx games worked on a C3200 (or similar), but slowly.
Wouldn't hold your breat though, if you did get it working I doubt they would be playable.
How are you getting along with snes9x? works pretty good for me, and seems to run even better when X11 isn't running, although I can't find a way to run fullscreen as xrandr doesn't work without X (it's an X app)