PCB Information

ROM Chip ID Region Known Man. Dates PCB Type CIC SRAM Decoder/ Logic Circuit Special Chips
SPAL-SO-0 (front) PAL 9349 SHVC-1A3B-20 D413A 64k MB74LS139 -
SNS-SO-0 (front) USA 9228 SHVC-1A3B-13 D411 64k SN74LS139AN -

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