SuperPET Parts Location Part Number Description U29-U60 4116 (32) 16K x 1 dynamic RAM U22-U29 4164 (8) 64K x 1 dynamic RAM 6502 CPU 6551 ACIA 901889-01 6702 encoder 6809E CPU UB3 901640-01 2332-221 ROM character U17 901898-01 2532 EPROM Waterloo A000-AFFF U18 901898-02 2532 EPROM Waterloo B000-BFFF U19 901898-03 2532 EPROM Waterloo C000-CFFF U20 901898-04 2532 EPROM Waterloo D000-DFFF U21 901897-01 2516 EPROM Waterloo E000-E7FF U22 901898-05 2532 EPROM Waterloo F000-FFFF U47 970018-12 2764 EPROM Waterloo A000-BFFF U48 970019-12 2764 EPROM Waterloo C000-DFFF U49 970020-12 2764 EPROM Waterloo E000-FFFF