A few years ago I tried to find out the compression used. Sourcer for example allows the bios to be disassembled to source code so the compression must be a well-known type.
Message Edited by peterfelgate on 04-09-2005 01:01 PM
Yep, positive Sourcer can be used; I've done it! For example, I have looked at the Optiplex GX1 A08 bios and can even see the code where the "unsupported processor" message is generated when processors faster than 600 MHz are used - it's a timing loop which, if it executes too quickly, is detected and the bios prints the error message out and then encounters a sequential pair of halt op codes; these are jumped round for slower processors. If the halts werereplaced by a NO_OP, the bios limitation on bioses higher than 600MHz could be got round... Not that this woul be legal......
Message Edited by peterfelgate on 04-15-2005 03:33 PM
peterfelgate_ce40d3
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April 9th, 2005 17:00
peterfelgate_ce40d3
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April 9th, 2005 17:00
Message Edited by peterfelgate on 04-09-2005 01:01 PM
Borg Number One
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April 9th, 2005 17:00
I have to find it again at first.
Well, are you sure that VCOM sourcer is able to unpack the BIOS (modules) ?
Is there someone else who can help or who already knows DELL BIOS compression methods?
Message Edited by Borg Number One on 04-10-2005 07:53 PM
peterfelgate_ce40d3
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April 15th, 2005 19:00
Message Edited by peterfelgate on 04-15-2005 03:33 PM
Borg Number One
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May 11th, 2005 10:00
Now, another person and me reached to develop a small utility which is able to uncompress BIOS modules from
DELL's special modified Phoenix BIOS-es.
If you are interested in this utility then let me know.
PS:
The next step is to develop a tool which is able to do modifications.
squik
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April 21st, 2012 05:00
yes i'm interested in your small utility
shesagordie
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April 21st, 2012 10:00
squik
Do you know that the thread you posted in, is seven years old?
Bev.