蓝桥单片机用汇编点灯

ORG 00H
START:
      mov P2,#80H
      MOV A,#0FFH  
      CLR C
      MOV R2,#8
      
LOOP1:RRC A            
     MOV P0,A
     CALL DELAY
     DJNZ R2,LOOP1
     MOV R2,#7
     
LOOP2:RLC A          
      MOV P0,A
      CALL DELAY
      DJNZ R2,LOOP2
      JMP START
      
DELAY:MOV R3,#20     
D1:   MOV R4,#20
D2:   MOV R5,#248
      DJNZ R5,$
      DJNZ R4,D2
      DJNZ R3,D1
      RET
      
END

附效果图