于指令执行周 期(Instruction Execution Cycle),CPU 由主记忆体抓取(Fetch)指令与资料(Data),执行完毕 后,将结果回存至主记忆体;使用 DMA 方法,I/O 装置跳过 CPU 直接于主...
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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。
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