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From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: grisha@ispol.com ("Gregory (Grisha) Trubetskoy")
Cc: linux-kernel@vger.kernel.org
Subject: Re: reading/writing CMOS beyond 256 bytes?
Date: Fri, 6 Jul 2001 16:07:04 +0100 (BST)	[thread overview]
Message-ID: <E15IXCD-0004Uu-00@the-village.bc.nu> (raw)
In-Reply-To: <Pine.BSF.4.32.0107060829460.47924-100000@localhost> from "Gregory (Grisha) Trubetskoy" at Jul 06, 2001 08:38:12 AM

> Unfortunately, it seems that some settings are not in the 128 (or 256)
> bytes accessible this way, so they must be stored elsewhere.

Large numbers of BIOS settings are in the NVRAM ESCD area in modern systems
(EISA config, ISAPNP config, etc)

> Does anyone know where I should look for the remaining parts of CMOS
> (short of having to sign some NDA with Intel?)?

The PnPBIOS and ESCD specs are publically available if a little impenetrable


  parent reply	other threads:[~2001-07-06 15:07 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-07-06 12:38 Gregory (Grisha) Trubetskoy
2001-07-06 12:47 ` Peter Svensson
2001-07-06 14:30 ` Richard B. Johnson
2001-07-09 11:46   ` David Woodhouse
2001-07-09 14:24   ` Christer Weinigel
2001-07-06 15:07 ` Alan Cox [this message]
2001-07-08 18:28   ` ESCD Support for 2.4.6-ac1/PNPBIOS (was: reading/writing CMOS beyond 256 bytes?) Gunther Mayer
2001-07-08 18:35     ` Jeff Garzik

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