> I recently migrated a design from a breadboard to a PCB.  I forgot to
> remove my "printf" statements (CCS compiler) that I had used during
> debugging.  After many hours of head-scratching, I figured out that the
> printf statements were making the pic go off into la-la land.  That in
> itself doesn't make sense, but to make matters worse, when the PIC was
> in this state, it would not reset.  It took many hours of debugging to
> connect these two events.  I eventually figured out that a big (.33 uF)
> cap was keeping everything running for a while.  When I discharged it, I
> could then reset the PIC properly.

The power doesn't have to go down to reset a PIC.  This can be done by
bringing MCLR low then high again.


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