PCB Information

ROM Chip ID Region Known Man. Dates PCB Type CIC SRAM Decoder/ Logic Circuit Special Chips
SPAL-4W-0 (front) PAL 9631 SHVC-1A0N-30 D413B - - -
Prototype (front) (back) USA - SHVC-4PV5B-01 D411A - SN74LS157N -
SNS-4W-0 (front) USA 9526 SHVC-1A0N-30 D411B - - -

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