[LinuxBIOS] Intel 440bx

Shaddam Corrino IV shaddamcorrinoiv at gmail.com
Tue Nov 21 19:22:13 CET 2006


On 11/21/06, Stefan Reinauer <stepan at coresystems.de> wrote:
>
> * Shaddam Corrino IV <shaddamcorrinoiv at gmail.com> [061121 17:24]:
> > and for reference ,with -v option :
> >
> > # od -v -t x1 < W29C020-12.after.zeroing.bin| grep ff
> > 0744300 00 00 00 00 00 00 00 00 00 00 ff ff ff ff ff ff
> >
> > # od -v -t x1 < W29C020C-90B.after.zeroing.bin| grep ff
> > 0354420 00 00 ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> > 0745660 00 00 00 00 ff ff ff ff ff ff ff ff ff ff ff ff
>
> Yeah, timing problem of some kind. try increasing/decreasing the delays
> in the code.
>
> Also make sure your system is not loaded when you do your flashing.
>
> you can also try nice -20 for the flashing and see if that changes the
> results.



Ok, I have tired to change myusec_delay() by 0.01, 10 , 100, and 1000 times
longer/shorter. Only 10 times longer works. Then it is abble to write
zero.bin and pass verification reliably.

However, it still fails to write regular bios :(

crap, I have overwritten the original bios chip, so system will be live
until next reboot unless I figure out how to write the bios :-)





-- 
Thanks!
Shaddam IV
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