The following code changes are necessary to use software-generated irqs.
要使用软件生成的IRQ,需要对代码进行如下修改。
2
This feature is used by most interrupt handlers, because it allows them to process IRQs of the same type serially.
这样特性用在很多中断处理函数,因为它容许串行地处理同一类型的IRQ。
3
Allocating interrupt requests (IRQs) to devices may actually be a useful service, because it allows the OS to just grab a list of devices and start running, without having to program them.