At 07:24 AM 9/12/97 -0400, Pedro J Barrios wrote: >Hi: > >Would you please explain me what is being done in these instructions: > >> >> >> MOVLW 0100H - 060H <--------------------- ???? >> SUB2: ADDWF INDF,W >> SKPNC >> CLRF INDF >> >> RETLW 0100H - 024H <- ------------------- ???? Pedro, those are assembler expressions. So "0100H - 060H" assembles as "0A0H". The following are the same: MOVLW 0100H - 060H MOVLW 0A0H - Tom