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The SNK-9201 could have been misprinted, but I'm thinking the SNK-9201 *IS* a PRO-CT0 character multiplexer. The GAL acronym typically stands for "generic array logic", the SPLD. This would be either a "gate array", "uncommitted logic array" or "semi-custom ASIC --Kyuusaku 20:54, 15 March 2012 (CET)

Why is it printed "SNK-9201" on the PROG boards of fatfury2 and ssideki, then ? Would the chip have a mode select pin ? --Furrtek 17:50, 16 March 2012 (CET)

Wait, seeing your pinout of PRO-CT0... Would they have dared using the logic of a video-dedicated chip to make a challenge-response kind of thing ? Checking if it would match what fatfury2 sends/expects right now, if my schematic of PRO-CT0 is right. --Furrtek 17:54, 16 March 2012 (CET)