I just played this yesterday. Found a thread about it on the Arcade Controls forums.
Which, by the way are teh weird. The people there all seem to have a phobia of soldering. Cabs are either specific to very few games or have a ridiculous amount of controls to play everything. People run DOS on better rigs than the P3 I have WinXP on. And this one guy wanted to put a Dreamcast in his MAME cocktail instead of upgrading the computer slightly and running a modern OS.