Myke, I have been referencing your book "Programming and Customizing the PIC
Microcontroller" for the past year, and have found it to be a valuable
reference.  I have a question regarding the "PIC execution hints" section,
page 295.  You suggest:

        "When developing an application, put in the hardware required to
allow in-circuit
        programming of the device.  This can give you a significant board
manufacturing
        cost reduction."

Sage advice to say the least.  Casually researching this topic, I have found
suggestions to clip a connector to all pins of the in-circuit PIC to be
programmed.  This will not be a practical or reliable option in my opinion.
Likewise, I would rather not include a header connected to every pin of the
device.  My goal is to expose the fewest extra pins of the device as
possible, and many pins are already brought out to headers anyway in my
design.  My question is where would I learn more about the absolute minimum
pins needed for in-circuit programming?  Would you be able to point me in
any direction?

I have also cc'd the PICList to gain advice from other engineers as well.

Thanks.


John Clark
Indianapolis, IN

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