Re: [OpenBIOS] l440gx+ nvram writing ... the BUD

[Steve and Sue]

Ron,

this may be veering in the wrong direction, but I've been thinking this one
over and I can't help thinking there must be some way to bypass the BUD
logic (after all, it's only there to stop rogue software updating the flash,
not determined hardware hackers).

Is it possible to lift a pin (pins) on the BUD that is driven by the PIIX4
and connect this through to the appropriate, lifted pin (pins) on the Flash?

Sorry but I'm not up on the hardware side and you seem to have some
technical docs. that may help with this (I don't have the chipset data with
me). I have to update Flash memory through the PIIX4 as a day-to-day
activity and for my board the process is not as involved as on your
motherboard - hence the bypass idea.

Steve

----- Original Message -----
From: Ronald G. Minnich 
To: '[e-mail]' 
Sent: 08 February 2000 23:33
Subject: RE: [OpenBIOS] l440gx+ nvram writing ... the BUD
> Thanks for the info. I'm wondering ... you can enable flash writing in the
> PIIX4e. It's just one lousy bit. So is the sum total of the work involved
> getting the BUD to NOT interrupt when you write? that would be
> interesting.
>
> Another data point. I am trying to run Intel's own IFLASH utility. Guess
> what ... it can't write flash either!
>
> This is a mess!
>
> ron
>
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