164-2.asm

当今单片机厂商琳琅满目

;        MOV     P0,#0
;        MOV     P2,#0
        MOV     A,P3
        MOV     P3,#0
        MOV     P3,#80H
        MOV     R7,#16
LOOP:   MOV     A,30H
        RLC     A
        MOV     30H,A
        MOV     A,31H
        RLC     A
        MOV     31H,A
        JC      ZHENG
        CLR     P3.0
        SETB    P3.1
        NOP
        NOP
        CLR     P3.1
        SJMP    LP1
ZHENG:  SETB    P3.0
        SETB    P3.1
        NOP
        NOP
        CLR     P3.1
LP1:    DJNZ    R7,LOOP
        MOV     A,P2
        MOV     P2,33H
        MOV     A,P3
        MOV     P3,#0
        MOV     P3,#80H
        SJMP    LOOP
        END