Trying to build a custom uC based controller adapter for the NES (American model). Though I'm surprised over the clock pulse I get from the NES. First, it looks to be active low in contrast to reference diagrams, but most strangely the clock pulse is very short. About 1 us.
Channel 1 is the latch and channel 2 is the clock pulse. What is this about? Should it be like this? When is the data read? On rising edge? I'm in trouble with this timing.
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Channel 1 is the latch and channel 2 is the clock pulse. What is this about? Should it be like this? When is the data read? On rising edge? I'm in trouble with this timing.