From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Mark Lord <liml@rtr.ca>
Cc: Daniel Drake <dsd@gentoo.org>,
Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>,
jgarzik@pobox.com, linux-kernel@vger.kernel.org,
linux-ide@vger.kernel.org, posting@blx4.net, vsu@altlinux.ru
Subject: Re: [PATCH] via82cxxx IDE: Support multiple controllers
Date: Thu, 13 Oct 2005 16:29:04 +0100 [thread overview]
Message-ID: <1129217344.18635.35.camel@localhost.localdomain> (raw)
In-Reply-To: <434E7237.1070508@rtr.ca>
On Iau, 2005-10-13 at 10:41 -0400, Mark Lord wrote:
> Alan Cox wrote:
> >
> > If the bus speed of your 486 is 25Mhz the chipset is at 25MHz as is your
> > IDE (ie 486/25, DX2/50, 3/75 - not sure about 4/100 etc). Now does
> > anyone know how you find out if the CPU is 25MHz bus clocked on a 486 8)
>
> Same method as /proc/cpuinfo, for an approximation? :)
Unfortunately cpuinfo doesn't know the difference between a 100Mhz
(4x25) and 100Mhz (3x33). Late 486s have cpuid which helps a bit but
many do not have that (it comes in with writeback cache) and they don't
have rdmsr to access the processor boot bus speed bits as the preventium
and later do.
Alan
prev parent reply other threads:[~2005-10-13 15:01 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-08-30 14:27 [PATCH] Add VIA VT6410 support Daniel Drake
2005-08-30 15:12 ` Bartlomiej Zolnierkiewicz
2005-09-02 0:28 ` [PATCH] via82cxxx IDE: Support multiple controllers Daniel Drake
2005-09-09 22:19 ` Daniel Drake
2005-09-27 13:20 ` Bartlomiej Zolnierkiewicz
2005-09-28 22:18 ` [PATCH] via82cxxx IDE: Remove /proc/via entry Daniel Drake
2005-09-28 22:37 ` Al Viro
2005-09-28 23:00 ` [PATCH] via82cxxx IDE: Remove /proc/ide/via entry Daniel Drake
2005-09-29 7:26 ` Bartlomiej Zolnierkiewicz
2005-09-28 22:48 ` [PATCH] via82cxxx IDE: Remove /proc/via entry Grzegorz Kulewski
2005-09-29 7:27 ` Bartlomiej Zolnierkiewicz
2005-10-09 15:18 ` Grzegorz Kulewski
2005-10-13 22:52 ` Daniel Drake
2005-11-18 20:39 ` Bartlomiej Zolnierkiewicz
2005-09-28 22:22 ` [PATCH] via82cxxx IDE: Support multiple controllers (v2) Daniel Drake
2005-11-04 10:52 ` Daniel Drake
2005-11-18 20:41 ` Bartlomiej Zolnierkiewicz
2005-10-12 15:38 ` [PATCH] via82cxxx IDE: Support multiple controllers Daniel Drake
2005-10-12 15:49 ` Jeff Garzik
2005-10-12 15:57 ` Daniel Drake
2005-10-12 17:52 ` Alan Cox
2005-10-13 11:45 ` Alan Cox
2005-10-13 14:41 ` Mark Lord
2005-10-13 15:29 ` Alan Cox [this message]
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