PCB Information

ROM Chip ID Region Known Man. Dates PCB Type CIC SRAM Decoder/ Logic Circuit Special Chips
SPAL-MK-0 (front) PAL 9239 SHVC-1K1B-01 D413A 16k SNS74LS139AN,SN74HCU04N DSP-1
SPAL-MK-0 (front) (back) PAL 9312 SHVC-1K1B-01 D413A 16k SNS74LS139N,SN74HCU04N DSP-1
SPAL-MK-0 (front) PAL 9349 SHVC-1K1X-01 D413A 16k MAD-2 DSP-1A
SPAL-MK-0 (front) (back) PAL 9741 SHVC-1K1X-10 D413B 16k MAD-2A DSP-1B
Prototype (front) (back) USA - SHVC-2QW5B-X1 D411 16k SN74LS157N DSP1
SNS-MK-0 (front) USA 9231 SHVC-1K1B-01 D411 16k SN74LS139AN,MC74NCU04N DSP-1
SNS-MK-0 (front) USA 9246 SHVC-1K1B-01 D411 16k SN74LS139P,MC74NCU04N DSP-1
SNS-MK-0 (front) USA 9652 SHVC-1K1X-10 D411B 16k MAD-2A DSP-1B

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