> Actually, now that I look into this carefully, the
> same doc tells me that calls and retfie's will
> save/retrieve at least all 11 bits on a 2048-byte
> device, so for the 16F872, I won't actually need
> to save/restore PCLATH in the ISR.

That is a good strategy, unless of course you use (change) PCLATH inside
your interrupt routine. So to be totally safe just save & restore.

Wouter van Ooijen
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Van Ooijen Technische Informatica: http://www.voti.nl
Jal compiler, Wisp programmer, WLoader bootloader, PICs kopen

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