You might notice that this is more of a hardware simulation and not just interrupt simulation.
您可能会注意到，这不仅是一个硬件模拟，也不仅仅是一个中断模拟。
Once the interrupts are generated, reset the interrupt simulation status flag and return success.
中断生成之后，就重新设置中断模拟状态标志，并返回成功。
This scenario arises when interrupt simulation is already in progress.
当中断模拟早已运行时，就会出现这种情况。
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