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From: Nate Williams <nate@mt.sri.com>
To: Michael Smith <msmith@atrad.adelaide.edu.au>
Cc: nate@mt.sri.com (Nate Williams), mobile@freebsd.org
Subject: Re: What PCMCIA ethernet card supported/recommended?
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	<199701220104.LAA10230@genesis.atrad.adelaide.edu.au>
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> > > Avoid 'combo' modem/ether cards; they're not supported (and would be a 
> > > royal pain in the rear to support, in fact).
> > 
> > Actually, I've been looking at the code recently, and most of the code
> > is already sutup to have multiple-drivers/card, so it's less hard than I
> > originally thought.
> 
> Hmm; how does one go about demuxing the interrupt?   (With the price tag
> on the PCCARD spec, I'm really forced to guess and infer on stuff
> like this 8( )

That's the fun part.  Since the interrupt handler occurs in the pccard
code (pcintr()), one has to determine which 'device' generated it.  I
have the spec., but I haven't looked at it closely, but there's gotta be
a way.

[Digging out my spec.]

Hmm, nothing obvious jumps out at me, but I suspect that a 'device' sets
a big in one of the CIS-Tuples that said it generated the IRQ.

But, I could be completely out to lunch. :)


Nate