这个表格包含中断与中断服务程序之间的处理器的映射，必须由程序员进行初始化。

This table contains the processor's mapping between interrupts and interrupt service routines and must be initialized by the programmer.

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CPU上的每个处理器都拥有自己的CSA(当前保存区)指针，指向当线程或中断处理程序由于上下文切换而被中断或交换时使用的MST。

Each processor on the CPU has its own CSA (current save area) pointer that points to the MST that is to be used when a thread or interrupt handler is interrupted or swapped due to context switch.

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prev和intpri字段中的值帮助判断处理器是在运行线程还是在运行中断处理程序。

The values in the prev and intpri fields help in determining whether the processor is running a thread or an interrupt handler.

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