Does anyone know of a site or a way to generate a report that shows what games use what controls?
ie which use a 4-way joystick, which use an 8 way joystick, trackball, spinner, etc....
thanks..
typing
mame -listinfo > filename will generate an okay output of what games use, with some errors: if the game used two different types of input (say a spinner and a 8way), only one is listed.
Another list near
top of this page, not quite what you're looking for, but it lists all inputs for all games. Doesn't say if the joystick is 4way or 8way, but gets around the problem of using -listinfo. However, it has the opposite problem: some games use a common driver that lists all the inputs, but only certain games use certain inputs. So it has too many inputs for some games. Take you pick.

BTW, I tried downloading the gamelist.zip, but looks like bandwidth has been exceeded for a couple hours. Sorry, but I'll try again later.