Hi,
I dont know if this is the right place to ask this question.
I am confused by this explaination of fast and slow handlers.

"A fast handler runs with interrupt reporting disabled in the microprocessor, and the 
interrupt being serviced is disabled in the interrupt controller. The handler can 
nonetheless enable reporting in the processor by calling sti.

A slow handler runs with interrupt reporting enabled in the processor, and the 
interrupt being serviced is disabled in the interrupt controller."

Is the interrupt controller some special device for handling all interrupts? why is 
the interrupt being serviced being disabled in it?

Thanks,
Anshuman

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