Andrew Warren <fastfwd@IX.NETCOM.COM> wrote:
>Dave Celsnak <x93celsnak@wmich.edu> wrote:

   <Snip context save and restore stuff>

Another possible source of misbehavior can occur if you have a
  "goto interrupt_service_routine"    at h'04'.

If you are executing background software in page 1 and generate an
interrupt, execution will go to h'04' but PCLATH will still point
to page 1.  The goto instruction will not take you where you want
to go if the ISR is in page 0.

Been there, did that.


--
Bob Fehrenbach    Wauwatosa, WI     bfehrenb@execpc.com