Hi All
I have found it difficult to get the RB0 interrupt working, and I've
tried on many occasions, with F86 F876 and F877.
I do all the right things, as per various books and notes.  I save
status and w, I branch to the routine, I came back and restore status
and w, and retfie.
All this seems to work, but if I make options,intedg falling edge (or
rising)I still get an interrupt on the opposite edge.
I have a simple reed switch on the pin, held high (or low) with 1K, and
switched low (or high)  I get an interrupt when the switch closes, and I
get another when the switch opens.
Switch bounce is most likey a problem, but even a 1 mS delay in the
routine doesn't always cure it, and I still get the 2nd interrupt
occasionally.
Is an external interrupt a really reliable way to get external events?
Is there a trick to it that I can't find to read about?  Has anyone had
really good results with RB0 int?
        thanks and regards to all.
        Howard

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