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
Questions: