Of course, Williams bought Midway, and so Midway was technically under Williams until the late 90s when they were spun-off. They always remained as Midway, though.
He actually said which ones use -5v, judging by the title. Dogousouken / Victory Road do. I believe Battlefield / Time Soldiers does as well. If you read Japanese (which you unfortunately don't) you can check the last column on the list below. http://www.tops-game.jp/list/all.htm That's just what they have in stock though.
Mmm, read the rest of the thread, too! Jamtex then said that none do as it's not part of the JAMMA spec. I was correcting Jamtex, as he asked which arcade boards used -12V, not which JAMMA boards ;-) I'd say go on a case-by-case basis. If you happen to buy a game which uses -5V (or -12V, which is unlikely), then you can change your PSU if you haven't already. :nod: