Only when a page fault is hit, for example, because the accessed page has been swapped out to disk, does the PPE receive an interrupt.

例如，只有在由于所访问的页面已经被交换到磁盘上而发生页面失效的情况时，PPE 才会接收到一个中断。

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The interrupt controller hardware needs to recognize the source of the interrupt and which partition should receive that interrupt.

中断控制器硬件需要确定中断源，以及应该接收该中断的分区。

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The program in single chip computer is C51 program, using the interrupt that UART receive end and the interrupt that UART send end.

单片机端通信程序采用C51编程，使用UART接收结束中断、UART发送结束中断。

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