void main(void)

{

TMOD = 0×60;                       // 定时器1，模式2，8自动重装，软件门控

TH1 = Reload Value;                  //重载TH1的值

TL1 = Initial Value;                   //初始化TL1的值

ET1 = 1;                               //允许定时器1中断

EA = 1;                             //开放全局中断

TR1 = 1;                            //启动定时器1

while(1);

}

void int_test(void) interrupt 3

{

EA = 0;

TF1 = 0;                         //复位定时器0中断标志位

P0_3 = ~P0_3;                   //对P0_3取反

EA = 1;

}