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From email@example.com Wed Feb 9 10:30:01 2000
Received: from avalon.informatik.uni-freiburg.de (avalon.informatik.uni-freiburg.de [126.96.36.199]) by wesley.informatik.uni-freiburg.de (8.8.8/8.8.8) with ESMTP id KAA01906 for firstname.lastname@example.org; Wed, 9 Feb 2000 10:30:01 +0100 Received: from mailgateway1.uni-freiburg.de (mailgateway1.uni-freiburg.de [188.8.131.52]) by avalon.informatik.uni-freiburg.de (8.9.0/8.9.0) with SMTP id KAA20273 for email@example.com; Wed, 9 Feb 2000 10:29:58 +0100 (MET) Received: from cyclone.stortek.com [184.108.40.206] by mailgateway1.uni-freiburg.de with esmtp (Exim 1.82 #3) id 12ITRc-0007N1-00; Wed, 9 Feb 2000 10:29:56 +0100 Received: from cyclone.stortek.com (localhost [127.0.0.1]) by cyclone.stortek.com (8.9.3/8.9.3) with ESMTP id CAA20643 for firstname.lastname@example.org; Wed, 9 Feb 2000 02:24:56 -0700 (MST) Received: from vinson-atm6.stortek.com (email@example.com [220.127.116.11]) by cyclone.stortek.com (8.9.3/8.9.3) with ESMTP id CAA20639 for firstname.lastname@example.org; Wed, 9 Feb 2000 02:24:55 -0700 (MST) Received: from eur-bridge.europe.stortek.com (eur-bridge.stortek.com [18.104.22.168]) by vinson-atm6.stortek.com (8.9.3/8.9.3) with ESMTP id CAA12205 for email@example.com; Wed, 9 Feb 2000 02:25:08 -0700 (MST) Received: by eur-bridge.europe.stortek.com with Internet Mail Service (5.5.2650.21) id <1SB7DV5G>; Wed, 9 Feb 2000 09:24:24 -0000 Message-ID: 465C3B178FD4D21192B40008C79FD87E878699@ehqmsg01.europe.stortek.com From: "Jessen, Per" JesseP@europe.stortek.com To: "'openbios'" firstname.lastname@example.org Subject: flashing AMD EPROMs under Linux (possibly off-topic) Date: Wed, 9 Feb 2000 09:23:50 -0000 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2650.21) Content-Type: text/plain; charset="iso-8859-1"
this is probably off-topic on this list, so my apologies in advance. But considering the recent debate on the flashing of BIOS'es, I figured this might be the right place to ask -
I'm trying to flashwrite to an AMD29F010A - 128K flash EPROM. It's sitting at 0xC000 as a video-ROM. I've got a module (kernel 2.2.14) doing this, which initially caused some problems, but it's more or less working now. It's the "more or less" bit that's causing problems :-)
If I leave the 2 first bytes of the ROM-image as 0xFFFF (instead of 0xAA55) I can flash the EPROM with no problems. If I leave them in, the system appears to get stuck/hung. No way out, except reset. If I use 0xFFFF at first, then subsequently try to write 0xAA55, the system again appears to locks up. Prior to a new write, I erase the entire EPROM (not necessary, I know, but ...) So, what I don't understand is what is the importance of the 0xAA55 to Linux ? I can flash the EPROM using a DOS utility with absolutely no problems.
If this is the wrong place to ask, could someone point me in the right direction ?
MTIA regards, Per Jessen