Well, that was fun! The 4 x SC-01's pay for the entire batch. Used on Q*bert and Bally/Midway Gorf type games. Good job. I didn't catch the whole part number to check but I think those 40-pin C0122xxx chips are Pokey's, GOLD MINE!
Finding more custom IC's. Lots of Atari stuff (Pokeys, Vector Generator). I'll probably make a list of the better finds and post here when I get some time.