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Date:      Mon, 24 Feb 2003 12:41:13 -0800
From:      Marcel Moolenaar <marcel@xcllnt.net>
To:        "M. Warner Losh" <imp@bsdimp.com>
Cc:        freebsd-arch@FreeBSD.ORG
Subject:   Re: [RFC] splitting of conf/NOTES
Message-ID:  <20030224204113.GC661@athlon.pn.xcllnt.net>
In-Reply-To: <20030224.060315.63039059.imp@bsdimp.com>
References:  <20030224064129.GA13290@dhcp53.pn.xcllnt.net> <20030224185033.H6037-100000@gamplex.bde.org> <20030224094856.GA21088@athlon.pn.xcllnt.net> <20030224.060315.63039059.imp@bsdimp.com>

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On Mon, Feb 24, 2003 at 06:03:15AM -0700, M. Warner Losh wrote:
> 
> The big problem is with the ISA bus.  The ISA bus has too many
> overloaded meanings right now.  It means those funky old cards that we
> know and love, as well as devices that look like they are on an ISA or
> ISA-like bus, but really are just a few gates in some bridge chip.

Maybe ACPI helps out here a bit. On i386 and ia64, where the ISA
legacy rears its ugly head the most (I think), ACPI can be used to
enumerate the legacy devices. In that sense I treat ACPI as a bus.
The tricky part still is that there's a lot of assumptions about
the BIOS and the BIOS data area that, if I understand correctly,
goes beyond plain ISA and is best described as PC specific. I think
this is more a driver issue than anything else.

I think if we can tackle ISA or PC legacy fairly decently, we should
have something that would work good in general.

> This whole discussion shows that our tree is still to x86 centric
> (with alpha hacks for extra lovin' goodness).

With non-i386 platforms the common case now, I think it's time to
bring the balance back. Anakin, bring me my lightsaber... and
coffee... no, the green one...

-- 
 Marcel Moolenaar	  USPA: A-39004		 marcel@xcllnt.net

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