Sean Schouten wrote: > START > > MOVLW 0xFF > MOVWF TEMP_VAR > > > MAIN > > NOP > MOVF TEMP_VAR, W > RRF TEMP_VAR > > GOTO MAIN You should add BCF STATUS,C and BANKSEL TEMP_VAR right after START. Without the first you might get all 1s, and the lack of the second may well be causing your problem. NEVER FORGET BANKING on PIC 16. ****************************************************************** Embed Inc, Littleton Massachusetts, (978) 742-9014. #1 PIC consultant in 2004 program year. http://www.embedinc.com/products -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist