LIU Zhiwei 於 2021年4月9日 週五 下午3:55寫道：
> When a vectored interrupt is selected and serviced, the hardware will
> automatically clear the corresponding pending bit in edge-triggered mode.
> This may lead to a lower priviledge interrupt pending forever.
>
> Therefore when interrupts return, pull a pen
LIU Zhiwei 於 2021年4月9日 週五 下午3:55寫道：
> When a vectored interrupt is selected and serviced, the hardware will
> automatically clear the corresponding pending bit in edge-triggered mode.
> This may lead to a lower priviledge interrupt pending forever.
>
> Therefore when interrupts return, pull a pen
