When the system is reset, All I/O ports go to a low impedence state (input mode). So, it won't be outputing 2A or 2B or anything untill programmed to do so after the reset.

What does the reset have to do with the timing and output values? If you are trying to time an event based on how much time expires after a reset, you will get mixed results. The time the system recovers after a reset isn't guaranteed to be consistent.


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