111.asm

此代码可以实现单片机流水灯设计

         ORG	0000H
	 LJMP	MAIN
MAIN:
	 mov   dptr,#tab
         mov   0A0H,#07h
start:   mov   a,#0bh
again:   djnz  a,dodo
         sjmp  start
dodo:    mov   r0,a
         movc  a,@a+dptr
         mov   80H,a
         mov   a,r0
         lcall delay
         sjmp  again
tab:  db  00h,90h,80h,0f8h,82h,92h,99h,0b0h,0a4h,0f9h,0c0h
DELAY:					; 延时子程序
	MOV	R0,#0FFH
	MOV	R1,#0FFH
DLY_LP:
	NOP
	NOP
	DJNZ	R0,DLY_LP
	MOV	R0,#0FFH
	DJNZ	R1,DLY_LP 
	RET
	
	END