Looks like a similar board to mine, although mine is running a bootleg Pac-Man (the Galaxian hardware one in MAME). The board itself has components in different places, but mine has it marked out for ones that aren't on it, but are on yours (the 2 big black caps at the top of the photo, for example). What kind of baord was that originally anyway? (either mine or his)...they don't look like a Galaxian board (or is that how an original Namco one looks?) Mine ended up matching a pinout called "Pac-Man on Pisces hardware" when I was making up the harness for it.