请各位学长帮忙看看哪里错了

ytcx

#include <hidef.h>      /* common defines and macros */
#include "derivative.h"      /* derivative-specific definitions */
//#pragma LINK_INFO DERIVATIVE "mc9s12dg128b"
unsigned char Data1[8]={0xFE,0xFD,0xFB,0xF7,0xEF,0xDF,0xBF,0x7F};
void SetBusCLK_64M(void)
{   
    CLKSEL=0X00;                                //disengage PLL to system
    PLLCTL_PLLON=1;                        //turn on PLL
    SYNR =0xc0 | 0x07;                        
    REFDV=0x80 | 0x01;
    POSTDIV=0x00;       //pllclock=2*osc*(1+SYNR)/(1+REFDV)=128MHz;
    _asm(nop);          //BUS CLOCK=64M
    _asm(nop);
    while(!(CRGFLG_LOCK==1));          //when pll is steady ,then use it;
    CLKSEL_PLLSEL =1;                        //engage PLL to system;
}
void PIT_init(void)//定时中断初始化函数 5MS定时中断设置
{
    PITCFLMT_PITE=0; //定时中断通道0关
    PITCE_PCE0=1;//定时器通道0使能
    PITMTLD0=64-1;//8位定时器初值设定,64分频，在64MHzBusClock下，为1MHz。即1us
    PITLD0=1000-1;//16位定时器初值设定。PITTIME*0.125uS  即1ms中断一次
    PITINTE_PINTE0=1;//定时器中断通道0中断使能
    PITCFLMT_PITE=1;//定时器通道0使能
}
//void delay(int);

void main(void) {
unsigned char i;

i=0;  
SetBusCLK_64M();
PIT_init();

while(1) {

            DDRB=0xff;
            PORTB=Data1[i];
           }

}


void interrupt 66 PIT0(void){
int num,num2;
num++;
  if(num>1999){
  num=0;
  num2++;
  i++;
  if(num2>7){
  num2=0;
  PORTB=0xff;
  i=0;
  }
  }
}

音之夏萤

至少你要说明一下出现什么问题了吧