From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with archive (Exim 4.43) id 1JhEf2-0002Ho-Oy for mharc-grub-devel@gnu.org; Wed, 02 Apr 2008 21:54:40 -0400 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1JhEf0-0002Fo-QH for grub-devel@gnu.org; Wed, 02 Apr 2008 21:54:38 -0400 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1JhEew-0002BU-3V for grub-devel@gnu.org; Wed, 02 Apr 2008 21:54:38 -0400 Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1JhEev-0002BI-IC for grub-devel@gnu.org; Wed, 02 Apr 2008 21:54:33 -0400 Received: from gateway05.websitewelcome.com ([67.18.55.14]) by monty-python.gnu.org with smtp (Exim 4.60) (envelope-from ) id 1JhEeu-0005KZ-Jp for grub-devel@gnu.org; Wed, 02 Apr 2008 21:54:33 -0400 Received: (qmail 4280 invoked from network); 3 Apr 2008 02:00:22 -0000 Received: from gator297.hostgator.com (74.53.228.114) by gateway05.websitewelcome.com with SMTP; 3 Apr 2008 02:00:22 -0000 Received: from c-67-185-142-228.hsd1.wa.comcast.net ([67.185.142.228]:42637 helo=[192.168.1.101]) by gator297.hostgator.com with esmtpsa (TLSv1:AES256-SHA:256) (Exim 4.68) (envelope-from ) id 1JhEeo-0004Ol-PD for grub-devel@gnu.org; Wed, 02 Apr 2008 20:54:26 -0500 Message-ID: <47F438D5.4030401@gibibit.com> Date: Wed, 02 Apr 2008 18:54:29 -0700 From: Colin D Bennett User-Agent: Thunderbird 2.0.0.12 (X11/20080228) MIME-Version: 1.0 To: The development of GRUB 2 References: <47F42817.6040303@gibibit.com> <1207184704.3063.1.camel@rd> In-Reply-To: <1207184704.3063.1.camel@rd> X-Enigmail-Version: 0.95.6 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - gator297.hostgator.com X-AntiAbuse: Original Domain - gnu.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - gibibit.com X-detected-kernel: by monty-python.gnu.org: Linux 2.6 (newer, 3) Subject: Re: Google SoC, Fancy Menus or USB keyboard X-BeenThere: grub-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: The development of GRUB 2 List-Id: The development of GRUB 2 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 03 Apr 2008 01:54:39 -0000 Pavel Roskin wrote: > On Wed, 2008-04-02 at 17:43 -0700, Colin D Bennett wrote: > > >> Does GRUB code run in real mode? I was thinking that double-buffering >> the graphics might be important for fancy graphics effects, and wondered >> whether is it difficult to allocate and deal with a megabyte or so block >> of memory? When I last programmed real mode programs in DOS, I know the >> limitations based on segment sizes, etc., but it's been a while. >> > > GRUB runs in protected mode, but it can switch to the real mode > temporarily to call BIOS. In any case, I believe that the menu > implementation should be portable rather than x86 PC specific. > Thanks for the info. Of course I also agree that the menu should be portable; my mention of real mode was, I guess, a question of whether we have a 32-bit linear address space, rather than specifics about the processor mode.