Ben Hencke wrote :

> Unless I am losing my mind, I currently use IOC on a running 12f629 to
> detect pin changes. I constantly write to GPIO using MOVWF and have no
> problems.

The same.
I had a prototype running with 100 Hz "zerocrosing signal" on one GPIO pin,
and the output of a TSOP IR recevied on another and the gate of a TRIAC
on a third GPIO pin. The two first was both using IoC and served by
two ISR's. I could not "see" any trouble with this setup...
But, maybe I wasn't looking hard enough... :-) :-)

Regards,
Jan-Erik.

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