定时程序.asm

我学单片机89C51时编的大部分程序都在里面

        ORG 0000H
        LJMP MAIN
        ORG 000BH
        AJMP SERVE
        ORG 0030H
MAIN:   MOV SP,#60H
        MOV B,#0AH
        MOV TMOD,#01H
        MOV TL0,#0B0H
        MOV TH0,#3CH
        SETB TR0
        SETB ET0
        SETB EA
        SJMP $
SERVE:  MOV TL0,#0B0H
        MOV TH0,#3CH
        DJNZ B,LOOP
        CLR TR0
LOOP:   RETI
        END