Date: Mon, 4 Jun 2001 18:56:30 -0700 (PDT) From: John Polstra <jdp@polstra.com> To: alpha@freebsd.org Cc: msmith@freebsd.org Subject: Re: SCSI devices settling and illegal request Message-ID: <200106050156.f551uUx40794@vashon.polstra.com> In-Reply-To: <200106050200.f5520SL06826@mass.dis.org> References: <200106050200.f5520SL06826@mass.dis.org>
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In article <200106050200.f5520SL06826@mass.dis.org>, Mike Smith <msmith@FreeBSD.ORG> wrote: > > > OK, I give up. What's a "hose"? > > > > 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). There's something I'm still not clear about. I've been working lately with an x86 motherboard that has two separate PCI buses -- one 66 MHz bus and one 33 MHz bus. What would be different if these were "hoses" or "channels"? Is it that they would have separate address spaces? John -- John Polstra jdp@polstra.com John D. Polstra & Co., Inc. Seattle, Washington USA "Disappointment is a good sign of basic intelligence." -- Chögyam Trungpa To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message
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