relay1.asm

来自「用89S52进行DS1820温度读取程序」· 汇编 代码 · 共 21 行

      output equ p0.7
      org 000h
      jmp start
      org 100h
start:clr output
      lcall delay
      setb  output
      lcall delay
      jmp start
  delay: mov r3,#0ffh
     
     d2: mov r6,#0ffh
     d1: mov r7,#0ffh
         djnz r7,$
         djnz r6,d1
         djnz r5,d2
         
         
         ret
      end