微程序控制器的设计与实现

摘要

This paper discusses the design of the micro-program controller in NCS CPU. We introduce the architecture of the controller and the features of the currents. In the design we use some techniques such as:multi-address entrance,the change between inner and outer micro-instruction,the lock mechanism. These methods can improve the performance of the controller greatly. We also determine the clock,date path and control path. At last we point out that the successful design of the micro-program controller is the key to design of high-performance CPU.%该文讨论了NCS处理器中微程序控制器的设计方法，介绍了微程序控制器的基本构成电路和工作特点；在设计中采用了诸如：多入口地址输入、内外码转换、封锁机制等提高控制器性能的方法，并确定了电路的工作时钟、数据通路和控制通路。最后指出成功的微程序控制器设计是设计高性能CPU的关键。