The 2764 has a label on it

For purposes of identifying chips:
A1 is a 20 pin DIP unmarked
B1 is a 14 pin DIP 74LS74
C1 is a 20 pin DIP unmarked
B2 is a 40 pin DIP unmarked
D3 is a 28 pin socketed DIP 2764 EPROM
A4 is a 20 pin DIP marked N32S153N, barely legible, may be wrong
B4 is a 14 pin DIP 7404

Our first whatsit is linked to Donkey Kong or Donkey Kong Jr. because it was in a pile of Jr. parts. It appears to plug into a 40 pin DIP and act as a daughterboard. High Score save kit?

Whatsit is the place where I ask, “What is it?” When I find an oddity I try to photograph it, document it and open it up for comments. I will assign each one a W number for easy aggregation.

This bLog style posting will allow the conversation to flow.