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关于F2812中断优先级的问题



在刚才看中断的时候,想到一个问题,假如中断A的优先级高于中断B的优先级,那么当CPU在执行中断B的服务子程序时,中断A发出中断申请,CPU会立即打断中断B而去响应中断A,还是会等中断B的服务子程序执行完之后,再去响应中断A?求大神知道,不胜感激。。。。。。