;編程：在屏幕中間顯示當前的月份

assume cs:code
code segment
start:mov al,8
      out 70h,al
      in al,71h
      mov ah,al
      mov cl,4
      shr ah,cl
      and al,00001111b

      add ah,30h
      add al,30h

      mov bx,0b800h
      mov es,bx
      mov byte ptr es:[160*12+40*2],ah  ;顯示月份的十位數碼
      mov byte ptr es:[160*12+40*2+2],al;顯示月份的個位數碼

      mov ax,4c00h
      int 21h

code ends
end start