From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with archive (Exim 4.43) id 1N9GLw-0000Ui-UH for mharc-grub-devel@gnu.org; Sat, 14 Nov 2009 05:59:36 -0500 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1N9GLu-0000U0-Mp for grub-devel@gnu.org; Sat, 14 Nov 2009 05:59:34 -0500 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1N9GLp-0000S5-Mo for grub-devel@gnu.org; Sat, 14 Nov 2009 05:59:33 -0500 Received: from [199.232.76.173] (port=51476 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1N9GLp-0000Rn-CK for grub-devel@gnu.org; Sat, 14 Nov 2009 05:59:29 -0500 Received: from xvm-190-8.ghst.net ([217.70.190.8]:44179 helo=aybabtu.com) by monty-python.gnu.org with esmtps (TLS-1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1N9GLo-0003S8-Uq for grub-devel@gnu.org; Sat, 14 Nov 2009 05:59:29 -0500 Received: from rmh by aybabtu.com with local (Exim 4.69) (envelope-from ) id 1N9GLm-0002PV-Nc for grub-devel@gnu.org; Sat, 14 Nov 2009 11:59:26 +0100 Date: Sat, 14 Nov 2009 11:59:26 +0100 From: Robert Millan To: grub-devel@gnu.org Message-ID: <20091114105926.GA9262@aybabtu.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Organization: free as in freedom X-Message-Flag: Worried about Outlook viruses? Switch to Thunderbird! www.mozilla.com/thunderbird X-Debbugs-No-Ack: true User-Agent: Mutt/1.5.18 (2008-05-17) X-detected-operating-system: by monty-python.gnu.org: GNU/Linux 2.6 (newer, 3) Subject: gate A20 and i386-qemu port X-BeenThere: grub-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: The development of GNU GRUB List-Id: The development of GNU GRUB List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 14 Nov 2009 10:59:35 -0000 I'm wondering how come the i386-qemu port works if none of its initialization code takes into account gate A20. Does this mean it's supposed to be already disabled in initial CPU state, and only enabled by BIOS? Or maybe the code only works by chance and would break unexpectedly in specific situations? -- Robert Millan