paoma.asm

单片机实验：跑马灯

   ;跑马灯位寻址
 C_addr equ 0000h
 org  C_addr
  ajmp  start
  org  C_addr+0030h
start:  setb p1.0
        call  delay
	clr  p1.0

		setb  p1.1
		call  delay
		clr   p1.1

		setb  p1.2
		call   delay
		clr   p1.2
		ajmp   start                            
 delay:	mov  r5,#10
del0:  mov  r6,#200
del1:  mov  r7,#126
del2:  djnz  r7,del2
       djnz   r6,del1
       djnz   r5,del0
	ret
	end