An 8-bit instruction register can only specify 256 different operations and variations on operations . 一个八位的指令寄存器也只能确定256种不同的操作以及对于这些操作的修改。
Command register circuit 指令寄存器电路
A design method based on the decomposition and multiplexing technique of complex instruction , combined the decoding arithmetic of instruction and a step counter together , sub - step realization method of multiclocks is proposed . the similarities and differences of architecture between fsm and multi - ? ocks are discussed from two aspects , timing and state space 提出了执行周期复用的指令分解、指令寄存器与步长计数器联合译码,以及多时钟同步的控制流设计方法;进而从时间和状态空间两个角度深入讨论了控制流设计中状态机和多时钟两种常见体系结构的异同。