Hi all, I've just been playing with the TMR0 on a 16F84, and found that he OPTION command does not work. It was my understanding that the TRIS, and OPTION instructions, although obsoleted by uChip were still supported on the 'F84. The TRIS instructions still work. Is it my understanding that is in error, or has uChip started to remove support for these instructions from their chips ? Heinz