) 关键词：ARM微处理器；嵌入式系统；异常中断；中断向量 [gap=546]Key words：ARM ；Embedded system；Exception interrupt；Interrupt vector ...
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program exception interrupt 程序异常中断
processor exception interrupt error 处理器异常中断出错
arithmetic exception interrupt 运算例外中断
Exception &Interrupt Controller 异常控制器和中断控制器
exception interrupt return 异常中断返回
exception or interrupt 异常或中断
Exception and Interrupt handling 异常和中断处理
return form exception or interrupt 从异常或中断返回
Software Interrupt exception 软件中断异常
But there is a key difference between interrupt handling and process switching: the code executed by an interrupt or by an exception handler is not a process.
然而在中断处理和进程切换之间有一个关键的区别：由中断或异常处理执行的代码不在进程中。
Before dealing with that instruction, the control unit checks whether an interrupt or an exception occurred while the control unit executed the previous instruction.
在执行这个指令之前，控制单元检查在它执行前一条指令时，是否有中断或异常产生。
The last step performed by the control unit is equivalent to a jump to the interrupt or exception handler.
控制单元进行的最后一步等同于跳到中断或异常处理函数。
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