From: Rene Herman <rene.herman@keyaccess.nl>
To: Frantisek Rysanek <Frantisek.Rysanek@post.cz>
Cc: linux-kernel@vger.kernel.org
Subject: Re: What pokes the ISA IO port of 0x211 ?
Date: Mon, 21 Apr 2008 22:05:57 +0200 [thread overview]
Message-ID: <480CF3A5.8080104@keyaccess.nl> (raw)
In-Reply-To: <480C92C9.18283.A24BB91B@localhost>
On 21-04-08 13:12, Frantisek Rysanek wrote:
> Dear Everyone,
>
> I'm dealing with an embedded PC motherboard that contains some custom
> circuitry (GPIO), accessible via an ISA IO range between 0x200 and
> 0x218.
>
> There's an interesting issue with this in recent Linux (tried
> 2.6.22.6 and 2.6.24.2): something probes IO port 0x211 on boot, which
> happens to be an add-on buzzer control port - effectively the kernel
> boot launches an accoustic alarm :-)
>
> Any ideas what this could be?
ISAPnP default read data port is close at 0x213...
I haven't checked but this also reminds me of sensor chips. Do you have
sensor drivers builtin?
Rene.
next prev parent reply other threads:[~2008-04-21 20:06 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-21 11:12 What pokes the ISA IO port of 0x211 ? Frantisek Rysanek
2008-04-21 15:51 ` Bart Van Assche
2008-04-21 17:40 ` H. Peter Anvin
2008-04-21 20:05 ` Rene Herman [this message]
2008-04-21 20:34 ` Rene Herman
2008-04-23 12:19 ` Frantisek Rysanek
2008-04-23 13:56 ` Rene Herman
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