Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752573AbXBSA1D (ORCPT ); Sun, 18 Feb 2007 19:27:03 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752575AbXBSA1D (ORCPT ); Sun, 18 Feb 2007 19:27:03 -0500 Received: from terminus.zytor.com ([192.83.249.54]:43257 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752573AbXBSA1B (ORCPT ); Sun, 18 Feb 2007 19:27:01 -0500 Message-ID: <45D8EEC1.4030203@zytor.com> Date: Sun, 18 Feb 2007 16:26:41 -0800 From: "H. Peter Anvin" User-Agent: Thunderbird 1.5.0.9 (X11/20061219) MIME-Version: 1.0 To: Randy Dunlap CC: Jean Delvare , Linus Torvalds , Dax Kelson , linux-kernel Subject: Re: Linus' laptop and Num lock status References: <1171479361.3706.48.camel@mentorng.gurulabs.com> <20070214202144.1ddb930f.khali@linux-fr.org> <45D46F7B.3060105@zytor.com> <20070218170401.286e0fc6.khali@linux-fr.org> <45D88D9F.7090705@zytor.com> <20070218100644.e7c40a88.randy.dunlap@oracle.com> In-Reply-To: <20070218100644.e7c40a88.randy.dunlap@oracle.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1127 Lines: 31 Randy Dunlap wrote: > On Sun, 18 Feb 2007 09:32:15 -0800 H. Peter Anvin wrote: > >> Jean Delvare wrote: >>> On Thu, 15 Feb 2007 06:34:35 -0800, H. Peter Anvin wrote: >>>> Jean Delvare wrote: >>>>> On x86, the BIOS led state can be read from byte 0x97 the BIOS RAM. The >>>>> BIOS RAM is mapped at 0x400 so all we need to do is to one byte from >>>>> RAM (offset 0x497). This is how Suse's hwinfo does. >>>> Perhaps that's what Suse does, but the proper address is 0x417. >>>> >>>> 0x497 is the rarely-used LPT2 timeout counter. >>> Still, the information printed by hwinfo is correct, I've tested it >>> myself. Is there some publicly available documentation about the x86 >>> BIOS RAM mapping? >>> >> Google for Ralf Brown's Interrupt List. > > (Ralph) > > I didn't find the BIOS data areas/tables in Ralph's web pages... > It's called memory.lst in the Interrupt List. -hpa - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/