为什么程序跳转后有条语句不执行？ - 编程论坛

程序代码：

DATA      SEGMENT
INFO1     DB 0DH,0AH,'welcome to this programe!$'
INFO2     DB 0DH,0AH,'please enjoy the music!$'
INFO6     DB 0DH,0AH,'music was stopped!$'
MUSLIST   DB 0DH,0AH,'press any key to stop the music!'
          db 0dh,0ah,'$'
;******************************************音乐两只老虎
MUS_FREG3 DW 262,294,330,262
          DW 262,294,330,262
          DW 330,349,392
          DW 330,349,392
          DW 392,440,392,349,330,262
          DW 392,440,392,349,330,262
          DW 294,196,262
          DW 294,196,262,-1
MUS_TIME3 DW 50,50,50,50
          DW 50,50,50,50
          DW 50,50,100
          DW 50,50,100
          DW 25,25,25,25,50,50
          DW 25,25,25,25,50,50
          DW 50,50,100
          DW 50,50,100
DATA      ENDS
;***********************************************************
STACK     SEGMENT
          DB 200 DUP ('STACK')
STACK     ENDS
CODE      SEGMENT
          ASSUME DS:DATA,SS:STACK,CS:CODE
START:    MOV AX,DATA
          MOV DS,AX
          MOV aH, 0
          MOV AL,00
          INT 10H
;********** 定义一个宏显示
DISPLAY   MACRO b
          LEA DX,b
          MOV AH,9
          INT 21H
          ENDM
;**********************音乐地址宏
ADDRESS   MACRO A,B
          LEA SI,A
          LEA BP,DS:B
          ENDM
;***********************
          DISPLAY INFO1
          DISPLAY INFO2
          DISPLAY MUSLIST
TIGER:    ADDRESS MUS_FREG3,MUS_TIME3
          CALL MUSIC
          JMP TIGER
;******************************************发声
GENSOUND PROC NEAR
          PUSH AX
          PUSH BX
          PUSH CX
          PUSH DX
          PUSH DI
          MOV AL,0B6H
          OUT 43H,AL
          MOV DX,12H
          MOV AX,3280H
          DIV DI
          OUT 42H,AL
          MOV AL,AH
          OUT 42H,AL
          IN AL,61H
          MOV AH,AL
          OR AL,3
          OUT 61H,AL
WAIT1:    MOV CX,3314
          call waitf
DELAY1:   DEC BX
          JNZ WAIT1
          MOV AL,AH
          OUT 61H,AL
          POP DI
          POP DX
          POP CX
          POP BX
          POP AX
          RET
GENSOUND ENDP
;********************************************
waitf proc near
      push ax
waitf1:
      in al,61h
      and al,10h
      cmp al,ah
      je waitf1
      mov ah,al
      loop waitf1
      pop ax
      ret
waitf endp
;********************************************* 音乐播放
MUSIC   PROC NEAR
          PUSH DS
          SUB AX,AX
          PUSH AX
FREG:     mov ah, 0bh                ;检测是否有任意键按下？
          int 21h
          cmp al,00
出现问题：JNE  RETU
          MOV DI,[SI]
          CMP DI,-1
          JE END_MUS
          MOV BX,DS:[BP]
          CALL GENSOUND
          INC SI
          INC SI
          INC BP
          INC BP
          JMP FREG
          JMP END_MUS
RETU:     DISPLAY INFO6
END_MUS: RET
MUSIC    ENDP
CODE      ENDS
          END START

代码见上。这个程序是自动播放一段音乐，然后按任意键结束。正常执行的时候，按任意键结束后，应该显示一条信息“music was stopped!”，也就是我数据段中的变量 INFO6。但是按任意键结束播放，音乐停止后，却没有显示。这是怎么回事啊？我是在音乐播放的循环体中写了一句跳转语句（红色的那行代码），然后跳转执行“RETU: DISPLAY INFO6”

[ 本帖最后由 paul_wing 于 2012-5-14 01:17 编辑 ]