> If anyone has any code fragments, PIC or high-level language, or ideas =
> that may help here, they would be greatly appreciated.

I saved the last discussion on CRC16 calculation and have put it on
my web page in the virtual note book along with a load of other bits.
Don't know if it's what you're looking for (maybe useful for other members
of the list) but try:

http://hobbes.kingston.acuk.uk/matt/pic

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