WG K4600 P307 or P317 (according to Menace's faq via Ken Layton).
The JAMMA board I'm using outputs R, G, B, ground, and "Vertical Sync" (no mention of positive or negative), but there are input pins on the yoke daughter card for R, G, B, ground, vert+, horiz+, vert-, and horiz-.
Will I be able to use this monitor with this board?