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Date: Fri, 01 Feb 2008 19:00:17 -0800
From: Peter Grehan <grehan@freebsd.org>
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Cc: cvs-src@FreeBSD.org, src-committers@FreeBSD.org, cvs-all@FreeBSD.org,
	John Baldwin <jhb@FreeBSD.org>
Subject: Re: cvs commit: src/sys/dev/pci pci.c
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> I'm sure there are fun, interesting, and highly obtuse ways to get a
> PCI-E device onto a system with no PCI-E root complex.

  Be afraid ...

    http://www.pericom.com/products/pci/

  "In “reverse” mode, the PI7C9X110 is configured with the PCI port on 
the primary and the PCI Express port on the downstream side. The 
“reverse” configuration will be mainly used to “bridge” new PCI Express 
products to legacy PCI systems."

later,

Peter.