PCB Information

ROM Chip ID Region Known Man. Dates PCB Type CIC SRAM Decoder/ Logic Circuit Special Chips
SPAL-AR-0 (front) PAL 9244 SHVC-1A3B-13 D413A 64k SN74LS139N -
SNS-AR-0 (front) USA 9133 SHVC-1A3B-11 D411 64k MB74LS139 -
SNS-AR-0 (front) USA 9136 SHVC-1A3B-11 D411 64k MB74LS139 -
SNS-AR-0 (front) (back) USA 9137 SHVC-1A3B-11 D411 64k MB74LS139 -

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