Barry Gershenfeld wrote:

> Makes me wonder if the two bits really change at the same time.  If I had 
> this hardware in front of me I would try a loop that polls and stores the 
> state of the bits (in RAM).  Then peek at the results to see what 
> happened.  Kind of like a graph, but very quick and dirty.  Have to adjust 
> some delay in between samples so the event fits in RAM.

If you make it a circular buffer and stop when either one is set and the
other not or both are set for the first time (depending on what you want to
see), you don't really need any delay.

Another way of doing this is to poll them and store the content of a
high-res timer when the changes happen.

Gerhard

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