> In my application speed is important. So I need to detect a keypress
> with a minimum amount of instructions.

Huh?  Isn't there going to be a human pressing the key?  If so, speed may
need to be "fast" in human time, but certainly not in instruction time.  I
routinely use 50mS debounce or delay time on buttons pressed by humans,
and the result still feels instantaneous.  50mS is *many* instructions.


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