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>>>>> "Jason" == Jason Thorpe <thorpej@nas.nasa.gov> writes:
    >> Since when could a 3c509 do shared interrupts?

    Jason> I didn't say the 3c509 could... however, your statement was
    Jason> misleading at best, false at worst.

  I presume that the critical things to do level-triggered interupts are:
	- wire-OR output
	- ability to hold the irq active until the interrupt is acked
	
  I'm not sure exactly how to do edge triggered sharing: I assume that
one just has to poll all the devices before exiting the interupt
service routine in case another device has caused an interrupt since
the first time entered? Or does the 8239 do something about this?

]    Stuck in Burlington, MA... does anyone ever walk anywhere? |  SSH IPsec  [
]   Michael Richardson, Sandelman Software Works, Ottawa, ON    |international[
] mcr@sandelman.ottawa.on.ca http://www.sandelman.ottawa.on.ca/ |strong crypto[
] panic("Just another NetBSD/notebook using, kernel hacking, security guy");  [

	
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