基于ARM9芯片S3C2410异常中断程序设计。验证的代码详细分析了基于ARM嵌入式系统的异常处理流程。然后阐明关键字“-irq”的作用，设计出中断处理函数。最后，通过设置中断控制寄存器，设计外部中断EINT3的初始化程序，并给出主程序流程图。实践证明程序运行稳定可靠。-S3C2410 ARM9-based chip exception interrupt programming. Detailed analysis of the code verification of embedded systems based on ARM exception handling process. Then clarify keyword " -irq"　role, designed interrupt handler. Finally, by setting the interrupt control registers, external interrupt EINT3 design initialization procedure, and gives the main program flow chart. Proved to run stable and reliable.