Hi all=2C I=27m trying to calculate a checksum on the entire memory (with the = formula in the prog spec)=2E How is the checksum in PICSTART+ calculated = for 18C (the unprotected checksum that can be placed in the ID words)=3F = Does anyone know=3F = Some info=2C pitfalls=2C notes and such regarding programming the memory = of = the 18C series=3F Anyone=3F Note that I=27m not looking for code or for = someone to do the job for me=2C just some info=2E Regards=2C Niklas Carl=E9n -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.