> What value should it read from the code memory of a brand new device ?
> I'm getting all zeros and I expected all ones.

I recall having a similar problem when I first started programming 18F's
but I can't remember exactly, nor what the cause or solution was. But I
strongly recommend that you get a known working programmer, program the
PIC with it, and then try to read it with your own
progger-in-development.

Wouter van Ooijen

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Van Ooijen Technische Informatica: www.voti.nl
consultancy, development, PICmicro products
docent Hogeschool van Utrecht: www.voti.nl/hvu
 

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