alan smith wrote:
> Does the format of the hex file give anything about the location to program?  In other words, I know there is some header info on the hex file such as....its this chip and whatever else but I want to program a single empty location AFTER the parts been programmed, using the PICKIT2. This is basically to identify the board being delivered to a specific customer, so part of the serial stream that comes out identifies the board by customer.  Make sense?  This location will be programmed as its being packaged for shipping, so they dont want to be programming them and then going thru testing again with them.
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Intel hex files have a format with a starting address, number of bytes 
of data, then the actual data, then a checksum. (or something very 
similar to this)

So it allows you to do what you want.  You must have a programmer that 
is happy programming only a partial amount of an already programmed 
chip.  These days, probably most do but in the past, I definitely had 
one that didn't allow that.

Finally, you need to have a bullet-proof setup such that production 
people can use this equipment, do the job and not screw anything up 
since you are trying to avoid further testing.
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