嵌入式微处理器中断控制单元的设计

The Interrupt Control Design of a 16－Bit－Embedded Microprocessor

文章详细分析了嵌入式微处理器中的中断控制机制。对于可以设置是沿有效或电平有效的中断请求的接收提出了三种方案并比较了它们的优缺点。然后根据该处理器的要求给出了产生到微程序控制器的中断请求的算法，最后给出了键保护模式下中断响应中硬件处理流程。

： This paper disdusses the interrupt control of NUA microprocessor in detail．For some interrupt requests，which can be defined either as eage effective or level effective，three kinds of receiving scenarios were propoesd and been evaluated．Then an alogrithm which aims at sending interrupt request to microcontoller was given out．At last the hardware processing flow of severing an interrupt which under the key protection is disdussed．