微处理器数据通路控制单元的研究与实现

在阐述精简指令集计算机数据通路基本结构的基础上,结合四种基本的指令类型及指令的执行步骤,分析了数据通路控制单元工作的基本原理,并介绍了设计与实现这种控制单元的方法,通过数字时序系统的通用方法即有限状态机的方法,将状态机的输出作为控制信号,而状态输入和指令段数据作为状态机的输入。结论证明这种设计方法能很方便地在硬件上得到实现。

Research and Implementation of Microprocessor Datapath Control

On the base of the analysis of the RISC datapath architecture, combining 4 basic instruction type and processing procedures, this paper analyses the basic working principle in datapath control unit. On the base of preceding analysis as well as the interpretation and classifying of the instruction set the idea of implementing the control of the datapath by a finite state machine is offered. The result proves that the design method can be realized conveniently in hardware.