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一、概述计算机控制器最根本的任务是产生脉冲序列组,用来驱动数据处理系统中的静态数据通道和微功能部件。过去多用组合逻辑来完成此控制任务,其缺点是不便于维修和记忆,组合的方法杂乱而无一定规律可循。稍微修改一下指令系统,整个组合网络都要大变。所以出现了另一种控制方案——微程序控制器。它用的是存贮逻辑方法,即用存放在只读存贮器中的“存贮逻辑”来完成一条程序指令中的各个操作的控制,它所产生的控制信号线称控制位线,简称“位线”。
I. Overview The most fundamental task of a computer controller is to generate pulse train groups that drive static data channels and micro-features in a data processing system. The past, the use of combinational logic to complete this control task, the disadvantage is not easy to repair and memory, the combination of methods messy without certain laws to follow. Slightly change the command system, the entire portfolio network have changed dramatically. So there is another control scheme - micro-controller. It uses a storage logic that uses the “storage logic” stored in read-only memory to complete the control of each operation in a program instruction. The control signal line it generates is called a control bit line “Bit line.”