js03.asm

51单片机开发入门与典型实例

;程序:JS03.ASM
      START:   MOV   R0, #8        
               MOV   A,  #11111110B 
      LOOP:    MOV   P1, A         
               RL    A            
               DJNZ  R0, LOOP     
	       JMP   START       
               END