Alan B. Pearce email (remove spam text)
>1) PORTA is an unsigned char. Therefore, before we can take
>its complement, it must be promoted to signed int.
What a load of rubbish. There is no 'must be promoted' at all. There is no
reason to promote an unsigned char to signed int.
See also: www.piclist.com/techref/index.htm?key=code+packing
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