>  The problem is that when we change batteries, we want it to go into a
>  "speak to me" mode until a timer times off.  What we are finding is that
>  the POR bit (PCON.1) isn't changing state while we change batteries, so we
>  end up not being able to communicate to the device (we want to use PCON.1
>  to tell us that we've experienced a serious power outage).
>
>  Anybody else have comments on the POR bit?
>
>  Thanks.
>
>  Andy
>
Not having used this PIC ...
Is it possible that so little power is being consumed that the PIC continues
to run on filter capacitor charge when you swap batteries; it can probably
run down to 3V and the POR flag probably needs to see the voltage fall to
below 1V before it will trip.

Ian C.