PCB Information

ROM Chip ID Region Known Man. Dates PCB Type CIC SRAM Decoder/ Logic Circuit Special Chips
SPAL-GB-0 (front) PAL 9323 SHVC-1A3B-20 D413A 64k SN74LS139N -
SNS-GB-0 (front) USA 9209 SHVC-1A3B-12 D411 64k HD74LS139P -

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