linux-kernel - Re: Linus' laptop and Num lock status

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <45D46F7B.3060105@zytor.com>
Date:	Thu, 15 Feb 2007 06:34:35 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Jean Delvare <khali@...ux-fr.org>
CC:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Dax Kelson <dax@...ulabs.com>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: Linus' laptop and Num lock status

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 ocunter.

	-hpa



-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/