assume cs:code

code segment

    a dw 1,2,3,4,5,6,7,8
    b dd 0

start:	mov si, 0
		mov cx, 8
	s:	mov ax, a[si]
		add word ptr b[0], ax
		adc word ptr b[2], 0
		add si, 2
		loop s

		mov ax,4c00h
		int 21h

code ends

end start