主题:字符串翻转
字符翻转存到新缓存区中,下面的代码哪里错了?帮忙看看吧,谢啦
.386
STACK SEGMENT USE16 STACK
DB 200 DUP(0)
STACK ENDS
DATA SEGMENT USE16
BUF DB 'This is a test program'
N = $-BUF
NEW_BUF DB N DUP(0)
DATA ENDS
CODE SEGMENT USE16
ASSUME CS:CODE,DS:DATA,SS:STACK
START: MOV AX,DATA
MOV DS,AX
MOV SI,OFFSET BUF
MOV DI,OFFSET NEW_BUF
MOV CX,N
LOPA: ADD DI,(N-1)
MOV AL,[SI]
MOV [DI],AL
INC SI
DEC DI
DEC CX
JNZ LOPA
MOV AH,4CH
INT 21H
CODE ENDS
END START
.386
STACK SEGMENT USE16 STACK
DB 200 DUP(0)
STACK ENDS
DATA SEGMENT USE16
BUF DB 'This is a test program'
N = $-BUF
NEW_BUF DB N DUP(0)
DATA ENDS
CODE SEGMENT USE16
ASSUME CS:CODE,DS:DATA,SS:STACK
START: MOV AX,DATA
MOV DS,AX
MOV SI,OFFSET BUF
MOV DI,OFFSET NEW_BUF
MOV CX,N
LOPA: ADD DI,(N-1)
MOV AL,[SI]
MOV [DI],AL
INC SI
DEC DI
DEC CX
JNZ LOPA
MOV AH,4CH
INT 21H
CODE ENDS
END START