AT90S8515单片机的跑马灯电路图和C程序

#include < reg51.h >
#include < intrins.h >

unsigned char code col_s[8]={1,2,4,8,16,32,64,128,};
unsigned char count = 0;
unsigned char timer1s_flag;

void main()
{
TMOD=0x01 ;
TH0=0xed ;
TL0=0xff ;
EA=1;
ET0=1;
TR0=1 ;

while(1)
{
if(timer1s_flag>=100){
timer1s_flag = 0;

P1 = col_s[count];
count++;
count %= 8;
}
}
}

// 定时器0中断服务程序.

void timer0() interrupt 1 using 2
{
TH0=0xed ;
TL0=0xff ;

timer1s_flag++;
}
11.0592MHz晶振，一秒种移动一次。p1端口输出