这个程序 不能运行结束  loop循环的中途 ip的地址忽然变了  然后程序就变成无限循环了   但是我不知道为什么loop循环中ip的地址忽然变了   因为开始的几次循环ip的地址都很正常   请哪位大神给我看看 为什么   

assume cs:codesg,ss:stack,es:table,ds:data

   data segment
    db '1975','1976','1977','1978','1979','1980','1981','1982','1983','1984','1985','1986','1987','1988','1989','1990','1991','1992','1993','1994','1995'
        dd 16,22,382,1356,2390,8000,16000,24486,50065,97479,140417,197514,345980,590827,803530,1183000,1843000,2759000,3753000,4649000,5937000
        dw 3,7,9,13,28,38,130,220,476,778,1001,1442,2258,2793,4037,5635,8226,11542,14430,15257,17800
   data ends
  
   table segment
   
   
   db 21 dup ('year summ ne ?? ')

    table ends
   
    stack segment
    dw 8 dup (0)
    stack ends
   
    codesg segment
start: mov ax,data
       mov ds,ax
       mov ax,table
       mov es,ax
       mov ax,stack
       mov ss,ax
       mov sp,16
       mov bx,0
       mov si,0
       mov di,0
       mov cx,21
 s0:   push cx
         
       mov cx,2
  s:   mov ax,[bx+si]
       mov es:[di],ax
       add si,2
       add di,2

       loop s
      
       add di,1
       mov ax,[bx+84]
       mov es:[di],ax
       mov ax,[bx+86]
       mov es:[di+2],ax
       mov ax,[bx+84]
       mov dx,[bx+86]
       push ax
       push dx

       add di,5
       mov ax,[bx+168]
       mov es:[di],ax
       mov cx,[bx+168]
      
       add di,3
       pop dx
       pop ax
      
       div cx
       mov es:[di],ax
       add di,3
       add bx,4
       mov si,0
       pop cx

       loop s0
      
      
    mov ax,4c00h
    int 21h
   
    codesg ends

end start