I don't know of a way to force them to a particular processor; if you want to force them to a single processor (with the proviso that they'll all run on the same processor) to e.g. avoid issues with ...

I was trying to figure out how APIC and IRQL are related, and I can't quite get it organized in my head. So far I have this, which I think is right: The PIC used to support up to 15 different hardware ...