At the beginning of an instruction execution cycle.
指令运行周期的开始发生。
In other words, SOFTWARE interrupts always occur at the beginning of an instruction execution cycle.
换句话说，软件中断常常在指令运行周期的开始发生。
In an SISD architecture there is a single instruction cycle; operands are fetched serially into a single processing unit before execution.
在单指令流单数据流结构中，有单一的指令周期，在执行前，单个处理机按序取操作数。
It is more efficient to design a simple instruction set that enable the execution of one instruction per clock cycle.
设计一个能够在一个时钟周期执行一条指令的简单指令系统才是更有效的。
It is more efficient to design a simple instruction set that enable the execution of one instruction per clock cycle.
设计一个能够在一个时钟周期执行一条指令的简单指令系统才是更有效的。
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