I'm trying to write a serial transfer host on a PIC16F877 that uses two =
interrupt sources: TMR0 and RB0/INT.  The code appears to work fine at =
first, but after a while, I get a change on a pin that is not only =
unexpected, but has moderately disatarous consequences (i.e. aborts a =
transfer and the rest never recovers)

What I'm wondering is if there is any way that I can extract the top =
value from the stack to read it, not return to it. =20

When I simulate the software, it looks like it should be fine, but when =
I actually come to running it, there's that problem.  I think the reason =
it simulates fine is that there is no reasonable way to simulate the =
remote device that the host is communicating with.

So, any ideas on how to determine whre in my code I am when I get this =
error?

--Brendan

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