2.asm

当今单片机厂商琳琅满目

        MOV P0,#0
        MOV A,#11111110B
        MOV R7,#8
        SETB P3.6
LOOP:   MOV P2,A
        RL A
        JNB P3.6,LOOP1
        SJMP LOOP
LOOP1:  SJMP $
        END