>     For example(in picbasic): "PORTA = PORTA >> 1 & %00001111  'PORTA
>     moving 1 to the right whereas bit 4 to 7 are hidden." Totally
>     useless. I am asking WHY this is done exactly there to get a clue
>     what to delete or expand and not what it does.

I can symphathize.. I try hard not to comment WHAT I'm doing, so much
as WHY I'm doing it.. If you can't read AVR asm code, you should put
my code down and get someone who can :)  The more important thing is
to document why we are doing what we are doing, and in some rare
cases, why I didn't use the ovbious route or did use some special
"evil hack".

Good luck!
-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist