> option > > What should I be using? I don't know about the 16F84A in particular, but the OPTION instruction is being obsoleted on many of the newer parts. The new way to do this is: movwf option_reg ******************************************************************** Olin Lathrop, embedded systems consultant in Littleton Massachusetts (978) 742-9014, olin@embedinc.com, http://www.embedinc.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