算術運算指令
- 算術運算指令
- 例
- 例4.3
算術運算指令
例
例4.3
計算三個數的和
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