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。

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Some key issues of this technique, including interrupt simulation, exception handling and the construction of multiprogramming environment, are also elaborated.

研究了在应用开发环境中调试内核的关键技术，包括中断模拟、常处理、道程序执行环境的建立等。

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