From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jon Smirl Subject: Re: Reading the EDID block for x86 machines Date: Tue, 18 Mar 2003 09:07:49 -0800 (PST) Sender: linux-fbdev-devel-admin@lists.sourceforge.net Message-ID: <20030318170749.55622.qmail@web14904.mail.yahoo.com> References: <1047981547.3668.73.camel@localhost.localdomain> Mime-Version: 1.0 Return-path: Received: from web14904.mail.yahoo.com ([216.136.225.56]) by sc8-sf-list1.sourceforge.net with smtp (Exim 3.31-VA-mm2 #1 (Debian)) id 18vKZG-0006GN-00 for ; Tue, 18 Mar 2003 09:08:02 -0800 In-Reply-To: <1047981547.3668.73.camel@localhost.localdomain> Errors-To: linux-fbdev-devel-admin@lists.sourceforge.net List-Help: List-Post: List-Subscribe: , List-Id: List-Unsubscribe: , List-Archive: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Antonino Daplas Cc: Geert Uytterhoeven , James Simmons , Linux Fbdev development list Here is a description of how to control the shadow write protect for a SIS chipset. It is done by writing to PCI config space. There is a slim chance that this is a standard procedure. http://www.missl.cs.umd.edu/Projects/sebos/winint/index1.html When you copied to 8000 ot 9000, did you copy the ROM or the image at C000? I compared a dump of C000 to the ROM and they don't match. ATI may have overlaid some code during the init procedure. So I guess we are stuck with a user space daemon. Athlon-64 and IA64 will require the entire VM86 emulator. Last I checked the scitech emulator (ver8) han't implemented all of the instructions needed to run the ATI ROMs so it will need some work. How do the Transmeta tools work? Could we turn the ROMs into a C program and compile them again? Or use something like use an emulator to capture the reset sequence and then compile it for protected mode. I tried a couple of reverse engineering tools on the ROMs but I didn't get very far. I don't have access to the ATI Radeon documentation so it is hard for me to tell what is going on. ===== Jon Smirl jonsmirl@yahoo.com __________________________________________________ Do you Yahoo!? Yahoo! Platinum - Watch CBS' NCAA March Madness, live on your desktop! http://platinum.yahoo.com ------------------------------------------------------- This SF.net email is sponsored by: Does your code think in ink? You could win a Tablet PC. Get a free Tablet PC hat just for playing. What are you waiting for? http://ads.sourceforge.net/cgi-bin/redirect.pl?micr5043en