Thread (6 messages) 6 messages, 3 authors, 1999-01-05

Re: irq cleanup

From: Dan Malek <hidden>
Date: 1999-01-05 05:33:15

Cort Dougan wrote:
Right, that's the plan.

}To support PCI or ISA devices that interrupt on the MBX
}you would need to modify irq.c to support a multilevel interrupt
}scheme.  The 8259 would interrupt on one of the 8xx interrupt
}controller levels, then you would have to process all 8259
}interrupts.

Are there other systems designed like this with a multilevel
interrupt controller?  It's not hard to imagine, although I have
never seen one before the MBX.  This is one reason I didn't
spend any effort when I did the iniitial port.  It seemed like
lots of work for a single board not likely to use them

    -- Dan



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