问 买了个44B0开发板，能够跑起来，但一开中断，就跳到了HaltUndef，程序如下，请指点迷津。
void Isr_Init(void)
{   
    int i;
    pISR_UNDEF=(unsigned)HaltUndef;
    pISR_SWI  =(unsigned)HaltSwi;
    pISR_PABORT=(unsigned)HaltPabort;
    pISR_DABORT=(unsigned)HaltDabort;
    pISR_EINT4567=(unsigned)HaltEINT4567;
    //_RAM_STARTADDRESS=0X0C000000
    for(i=_RAM_STARTADDRESS;i<(_RAM_STARTADDRESS+0x20);i+=4)
    {
    *((volatile unsigned *)i)=0xEA000000+0x1FFE;//the ISR startaddress is 0x8000
    }
    rINTCON=0x1;      // Vectored Int. IRQ enable,FIQ disable    
    //rINTCON=0x5;      // Non-vectored,IRQ enable,FIQ disable    

    rINTMOD=0x0;      // All=IRQ mode
    rINTMSK=0x7ffffff;//All interrupt is masked.
    rINTMSK=rINTMSK&(~BIT_GLOBAL)&(~BIT_EINT4567);      //  enable enit4567
    EnableInterrupt();
}
void HaltEINT4567()
{ int32 i;
  rI_ISPC=BIT_EINT4567;
   //while(1);
/* while(1)
    { for(i=0;i<2660000;i++)
      rPDATC&=0xfff1;
      for(i=0;i<2660000;i++)
      rPDATC|=0xe;
    }*/
}
void HaltUndef(void)
{
    Uart_Printf("Undefined instruction exception!!!\n");
    while(1);
}
一触发外部4567中断，就跳到void HaltUndef(void)，但如我在中断加一个死循环，就没有问题，从中断跳出来，会有什么问题呢？请给指点一下。谢了 答 1: ...void __irq ISR_EINT4567 (void) 答 2: to sjnh这么做是NON-VECTOR还是VECTOR中断？