汇编实现字符串翻转

DATA SEGMENT 
BUF1 DB 200
    DB ?
    DB 200 DUP(?)
BUF2 DB 200
    DB ?
    DB 200 DUP(?)
CTRL DB 0AH,0DH,'$'


DATA ENDS
STACK SEGMENT
   DB 200 DUP(?)
STACK ENDS


CODE SEGMENT
 ASSUME CS:CODE,DS:DATA,SS:STACK
 
START: 
MOV AX,DATA
MOV DS,AX


LEA DX,BUF1
MOV AH,10
INT 21H


LEA DX,CTRL
MOV AH,9
INT 21H


MOV CL,BUF1+1
LEA SI,BUF1+2


InStack:
 MOV DX,[SI]
 PUSH DX
 INC SI
 DEC CL
 JNZ InStack
 
MOV CL,BUF1+1 
LEA SI,BUF2


OutStack:
 pop DX
 MOV [SI],DL
 INC SI
 DEC CL
JNZ OutStack
 
LEA DX,CTRL
MOV AH,9
INT 21H


LEA DX,BUF2
MOV AH,9
INT 21H


MOV AH,4CH
INT 21H
CODE ENDS 
END START