实验.asm

TCP_USB试验平台下的几个常见的实验的相应要求与代码

code segment 
assume cs:code

delay proc near
            mov   cx,60H
      L1:   push  cx 
            mov   cx,0F000H
      L3:   loop  L3
            pop   cx
            loop  L1
            ret
delay endp
         
start:      nop
      L0:   mov   dx,2A0H
            out   dx,al
            call  delay
            mov   dx,2A8H
            out   dx,al
            call  delay
            mov   ah,0BH
            int   21H
            cmp   al,00H
            jz    L0
      exit: mov   ah,4CH
            int   21H
code ends
end start