help for Radeon BIOS Editor, reversing the bios signature

Dario Napole darionapole at
Sun Jun 19 13:03:41 PDT 2011

hi, and sorry for asking here, i'm not sure this is the right place but 
it was the only one that i know that has highly experienced programers 
and that also reverse engineer drivers. (btw first time using a mailing 
list so sorry if i missed something)

I'm just going the ask if anyone has some free time and would like to 
give it a try and help BAGZZlash at Tech Power Up, because nor i nor him 
does know enought to do it.
The problem is that RBE is able to edit the bios, but AMD introduced 
some kind of signature check for the HD 6000 series bios and if it 
doesn't match it rolls back the configuration to the original ones. This 
is bothersome because you can't even change the fan curve if you dont 
like your 6950 working at 90ºC just to keep it quite (the VRM can even 
reach 110ºC) .
This can also be quite usefull if you use the gpu for extensive tasks 
with openGL, which as the fan curve is prepared for "gaming", could very 
much end up burning the card as would happen with furmark if you dont 
set the fan at 100%.

If anyone could reverse enginering the algoritm so he can add it to RBE, 
i would be very gratefull
sorry if this wasn't the  right place to ask for help

the topic in the forum is this one (i'm laharl2k)

thanks in advance for any help you could give him
Dario Napole

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