汇编语言（8086）最简单加减乘除：定义A,B 使C=A+B D=A-B E=A*B F=A/B 符号有DB MOV A
1个回答

DATA SEGMENT

A DB 0AH

B DB 0BH

C DW

D DW

E DW

F DW

DATA ENDS

CODE SEGMENT

ASSUM CS:CODE,DS:DATA

BEGIN:

LDS SI,A

LES DI,C

LODSB

;+

MOV CL,AL

CBW

MOV BX,AX

MOV AL,[SI]

CBW

ADD AX,BX

STOSW

;-

MOV AL,CL

CBW

MOV BX,AX

MOV AL,[SI]

CBW

XCHG AX,BX

SUB AX,BX

STOSW

;*

MOV AL,CL

MOV BL,[SI]

IMUL BL

STOSW

;/

MOV AL,CL

CBW

MOV BL,[SI]

IDIV BL

STOSW

;EXIT

MOV AX,4C00H

INT 21H

CODE ENDS

END BEGIN

相关问题