PIC Microcontoller Math Method

24 bit binary addition

From: Regulus Berdin

        movf    twofour0,w
        addwf   prod0,f

        movf    twofour1,w
        btfsc   STATUS,c
         incfsz twofour1,w
          addwf prod1,f

        movf    twofour2,w
        btfsc   STATUS,c
         incfsz twofour2,w
          addwf prod2,f

        movf    twofour3,w
        btfsc   STATUS,c
         incfsz twofour3,w
          addwf prod3,f