Gorf runs on hardware similiar to Wizard of Wor. It has some extra boards that you need to be able to play it, though, the most important being the RGB video/interface board. The upright also has a display driver board (for working the ranking lights), and an audio board. The cocktail has a driver board (for coin counters, I assume) and an audio board.
JAMMA tips: You do not have to hook up RESET to anything. If you look at the schematics, -SENSE line needs to be connected to GND. The +V line that goes to the audio board needs +12VDC hooked up to it, and the -V lines should be hooked up to GND.