IER |= M_INT9;
时间: 2023-10-20 09:27:17 浏览: 123
IER |= M_INT9; 表示使能CPU级别的第9个中断线路。具体来说,IER是一个寄存器,通过使用或运算(|=)将M_INT9的对应位设置为1,从而使得第9个中断线路被使能。[2<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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