Date: Mon, 04 Jun 2001 19:00:28 -0700 From: Mike Smith <msmith@freebsd.org> To: Andrew Gallatin <gallatin@cs.duke.edu> Cc: John Polstra <jdp@polstra.com>, alpha@freebsd.org Subject: Re: SCSI devices settling and illegal request Message-ID: <200106050200.f5520SL06826@mass.dis.org> In-Reply-To: Your message of "Mon, 04 Jun 2001 21:07:54 EDT." <15132.12522.204808.968943@grasshopper.cs.duke.edu>
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> > > The only cards I've seen that give a hoot what hose they're on are
> > > NCR/Sym cards. I suppose video cards would need to be on the zeroth
> > > hose too..
> >
> > OK, I give up. What's a "hose"?
> >
> > John
>
> Modern server-class alphas (such as DS20, xp1000, AS4100, AS4000,
> AS1200, etc) may have totally separate PCI buses, with separate IO and
> memory spaces. Like a normal bus, each of these can have ppbs to
> child busses, etc. We call each collection of buses a hose. This
> terminology comes from the SRM console.
Just FWIW, you will see this in the PC world as well at some point; Intel
call them "channels" (personally, I think "hose" is a much cooler name).
--
... every activity meets with opposition, everyone who acts has his
rivals and unfortunately opponents also. But not because people want
to be opponents, rather because the tasks and relationships force
people to take different points of view. [Dr. Fritz Todt]
V I C T O R Y N O T V E N G E A N C E
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