Fetch-Decode-Execute Cyclefetchdecodeexecutecyclefetch将pc指向的内存地址中的指令拷贝到指令寄存器中然后pc加4指令长度为4个字节就是说数据线是32bitsdecode从指令寄存器中提取操作数如果有的话和操作码execute如果需要将操作数从指令中指定的地址拷贝到寄存器中dataabort就是发生在这一步的
The Fetch-Execute Cycle的中文翻译 The Fetch-Execute Cycle 获取执行周期
该取，执行周期
A computer program consists of a collection of instructions encoded in the binary numbering system. The stages of the fetch execution cycle are the sequence of steps followed by the Central Processing Unit (CPU) as it executes instructions and functions.
Fetch Execute Cycle Travis Griffiths
The functional block diagram or architecture of a microprocessor chip is shown in figure 3.1 (based on the Intel 8085 CPU). The CPU has an internal 8-bit bus (described here as a data bus although it is sometimes used for other purposes) along which information internal to the CPU flows,...
The execute instruction definition for the instruction cycle lays the basis for every processor. The cycle has three stages, Fetch, Decode and Execute.
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Thus, when the first instruction is, for example, fetched from the memory prior to the second instruction, the second instruction is fetched from the memory in the machine cycle before the execution of the first instruction has been completed. In other words, the execution of the second ...