两个线程（中断线程和轮询线程）

two threads (an interrupt and polling thread)

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而非一根奉献中断线，几根线能被分享提供更可能的中断。

Rather than a dedicated interrupt line, several lines can be Shared to provide more possible interrupts.

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这些计划可以被看作是一种类型的块多线程之间的用户程序线程和中断线程。

Such schemes can be considered a type of block multithreading among the user program thread and the interrupt threads.

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