On a typical PIC, such as the 16C54, does changing the T0CKI edge select
bit in the option register cause the  prescaler or TMR0 to clear or
otherwise 'glitch' an extra count, etc.?

  I have a situation where I want to change the edge select after seeing
an edge.  e.g., sense a falling edge, immediately set to count on next
rising edge; sense a rising edge, immediately set to count on the next
falling edge.  I would like TMR0 to not be affected adversely, hence my
question.  (The prescaler does not matter--I'm not using it).

  --Scott

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