p1口输出.asm

WAVE6000编写的常用的程序 包括键盘 通信 数据转换

       org      0000h               ;晶振12M
       ajmp     main
       org      0040h
main:  mov      sp,    #60h
       mov      a,     #01h
rotate:mov      p1,    a
       rl       a
       acall    delay
       sjmp     rotate
delay: mov      r0,    #03h
d1:    mov      r1,    #0ffh
d2:    mov      r2,    #0ffh
       djnz     r2,    $
       djnz     r1,    d2
       djnz     r0,    d1
       ret