> Well I've achieved my next milestone. I keyed in a few lines of code
> today and had an LED flashing nicely at approximately 1Hz. However just
> as I hit the program button, I realised I may have done one thing
> wrong. I did not open the Program/Verify window of MPLAB. If I had, I
> would have noticed that "Calibration Memory" was checked.

Good programmers will follow the Microchip recommendation to read the
calibrated values, erase the chip, then write the calibrated values back.
A recent programmer I worked on does exactly that for the 12F628/675.
You'd have to check the documentation for the specific programmer, or how
MPLAB handles it if you are programming directly from MPLAB.


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Embed Inc, embedded system specialists in Littleton Massachusetts
(978) 742-9014, http://www.embedinc.com

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