算术运算指令

算术运算指令

例

例4.3

计算三个数的和

data segment
	NUM DB	0FFH,0FFH,0FFH
	SUM DW	'$$'
data ends

code segment
	assume cs:code,ds:data
start:
	
	mov ax,data
	mov ds,ax
	mov ah,0
	
	mov al,num
	add al,num+1
	adc ah,0
	clc
	add al,num+2
	adc ah,0
	
	mov sum,ax


	mov ah,4ch
	int 21h
code ends
	end start

结果