Hi Adam

Sorry for not replying sooner - our mail has been down and I'm wading through
thousands of messages.
I'm using a MAX 202 twixt PC and PIC and with the PIC circuit powered down
I can see 1.73V at the UART Rx pin of the PIC and 1.68V at the Tx pin.
According to the F87x datasheet, the voltage must rise from Vss to achieve a
clean reset
and I think this may be the problem.

Alan


The WDT doesn't turn power off to the PIC, so the power source that is
powering the pic should still be powering the pic when the WDT times
out.  The serial port shouldn't be powering it at all, especially since
you are likely to be using a rs-232 level shifter (such as the max232,
or a couple of transisters) and your pic pin shouldn't be seeing 12v.

How is your project powered?  What circuitry lies between your PC the
the PIC?

-Adam

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