大家帮忙看一下这个分支程序啊~~~~~~~~~~~~~~~~~~~~~~~ - 编程论坛

程序的功能是想输入一个名字，然后判断，N就从头再来，Y就输出yes，问题是再次9号功能时乱码
具体如下

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DATAS SEGMENT
    ;此处输入数据段代码
    PRINT1 DB 'WHAT IS YOUR NAME?$'
    PRINT2 DB '(Y/N)?$'
    PRINT3 DB 'YES RIGHT$'
DATAS ENDS

STACKS SEGMENT
    ;此处输入堆栈段代码
STACKS ENDS

CODES SEGMENT
    ASSUME CS:CODES,DS:DATAS,SS:STACKS
START:
    MOV AX,DATAS
    MOV DS,AX
    MOV AH,9
    LEA DX,PRINT1
    INT 21H
    MOV AH,2
    MOV DL,13
    INT 21H
    MOV AH,2
    MOV DL,10
    INT 21H
    MOV AH,10
    BUFFER DB 10
    DB ?
    DB 10 DUP(?)
    INT 21H
    MOV AH,9
    LEA DX,PRINT2
    INT 21H
    mov dx,0
    MOV AH,2
    MOV DL,13
    INT 21H
    MOV AH,2
    MOV DL,10
    INT 21H
    MOV AH,1
    MOV DL,AL
    INT 21H
    let0:
    cmp al,'N'
    jGE out1
    jMP out2


    out1:
   MOV AH,9
    LEA DX,PRINT1
    INT 21H
    MOV AH,2
    MOV DL,13
    INT 21H
    MOV AH,2
    MOV DL,10
    INT 21H
    MOV AH,10
    INT 21H
    MOV AH,9
    LEA DX,PRINT2
    INT 21H
    mov dx,0
    MOV AH,2
    MOV DL,13
    INT 21H
    MOV AH,2
    MOV DL,10
    INT 21H
    MOV AH,1
    MOV DL,AL
    INT 21H

    out2:
    MOV AH,2
    MOV DL,13
    INT 21H
    MOV AH,2
    MOV DL,10
    INT 21H
    MOV AH,9
    LEA DX,PRINT3
    INT 21H
    ;此处输入代码段代码
    MOV AH,4CH
    INT 21H
CODES ENDS
    END START