>Pleae there is someone that can explain me the meaning of the expressions >like:,,,, or the corrisponding instructions in MPLAB >assembler? I have no idea what these actually are, but I can take a shot in the dark just judging the instructions based on their context: ifc = btfss (note that "if clear" = "skip if set") ifs = btfsc (same as above) c = bcf cc = clear carry sc = shift (left or right?) through carry I don't know what compiler uses those mnemonics. It's not MPASM, though. --Andrew _________________________________________________________________ Send and receive Hotmail on your mobile device: http://mobile.msn.com -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics