prog8_4.asm

汇编语言-王爽 源代码 加 卜艳萍版源代码

stack  segment stack
       dw  64 dup(?)
stack  ends
data  segment
buff  db  8 dup(?)
data  ends
code  segment
      assume  cs:code,ds:data,ss:stack
start:mov  ax,data
      mov  ds,ax
      mov  dl,10h
      mov  di,offset buff
      mov  cx,8
again:mov  al,dl
      and  al,0efh
      out  4,al
      ;call  delay
      mov  al,dl
      out  4,al
 wt:  in  al,2
      test  al,01h
      jz  wt
      in  al,3
      mov  [di],al
      inc  di
      inc  dl
      loop  again 
      mov  ah,4ch
      int  21h
code  ends
      end  start