I did one a few years ago using an x-arcade, but trackball support isn't there. You can use a keyboard and mouse adapter, but it really doesn't work well for trackballs. Right now I'm building a new cab with a pc so I can have a trackball, pinball sims, and a spinner. Also mame is not updated very often on the xbox, so some games aren't totally emulated, sounds not working mostly. I'd recommend using a pc.
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