Colordreams Revision C
Max. 64K PRG ROM.
Max. 64K CHR RAM.
This board is different from the REV A and B boards in the way it handles the lockout
defeat. It's much more complicated than before, with a -5V charge pump and some other
things. There was no part number listed on the board, so I just called it REV C.
One thing to note is there's a place for another charge pump chip, just in case the one
couldn't supply enough power. I've never seen both stuffed at once.