Dash (12) motherboards came with a tiny blue "Dash" sticker on them near the Jamma connector. They can fall off, but if you see one on there you can save yourself the trouble of asking. Usually what I've seen is the games that should use Dash boards had their Dash go bad and get replaced incorrectly with a 10 mhz, not the opposite.
Index 
Flat 
Re: Questions about CPS1 A boards
Reply
