;8個(gè)led循環(huán)5次右移；然后5次左移。
	org 0000h
	ajmp START1
	org 0003h
	reti
	org 000bh
	reti
	org 0013h
	reti
	org 001bh
	reti
	org 0023h
	reti
	
	
        org 0030h
start1:MOV SP,#60H
       SETB P1.6
       SETB P3.5
       MOV R0,#00H
       MOV R1,#00H
       MOV R2,#02H
       CLR F0
       MOV A,#80H
       MOV TMOD,#01H
       MOV TL0,#00H
       MOV TH0,#00H
 LOOPM:SETB P1.6
       ACALL SOUT
       CLR P1.6
       SETB TR0
       INC R1
       CJNE R1,#08H,LOOPN
       INC R0
       MOV R1,#00H
 LOOPN:JNB TF0,$
       CLR TF0
       MOV TL0,#00H
       MOV TH0,#00H
       DJNZ R2,LOOPN
       MOV R2,#02H
       CJNE R0,#05H,LOOPO
       CPL F0
       MOV R0,#00H
 LOOPO:JB F0,LOOPA
       RR A
       SJMP LOOPM
 LOOPA:RL A
       SJMP LOOPM
 

       
  SOUT:MOV SBUF,A
       JNB TI,$
       CLR TI
       RET  

       END