While it is running, it records the address of the instruction that is being executed every time a system-clock interrupt occurs.
当它运行时，它会记录每次系统时钟中断发生时正在执行的指令的地址。
While it is running, it records the address of the instruction that is being executed every time a system-clock interrupt occurs.
当它运行时，它会记录每次系统时钟中断发生时正在执行的指令的地址。
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