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CPU取指到发出控制、微程序控制原理详细过程
2022-06-23 22:18:00 【一夜奈良山若即若离】
微命令寄存器CMDR:用于保存从微程序中取出的每一条为命令
微地址寄存器CMAR:用于存放将综合IR中的操作码+状态码等生成的一个微程序的首地址
控制存储器:里面按顺序每行保存一条微命令，多条微命令组成了微程序
指令寄存器IR:用于存放从内存中取得的机器指令
PS:状态条件指的是9.1那条线，发出了控制信号，然后，执行完的部件反馈的状态通过某种方式送到了地址转移逻辑单元。
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