Re: [cobalt-users] Msg for Gerald Waugh - re fried BIOS on Raq4i

["Chris" <clathem@xxxxxxxxxxxxx>]

----- Original Message -----
From: "Gerald Waugh" <gwaugh@xxxxxxxxxxxxxxxxxxxxxxx>
To: <cobalt-users@xxxxxxxxxxxxxxx>
Sent: Monday, December 30, 2002 3:59 PM
Subject: Re: [cobalt-users] Msg for Gerald Waugh - re fried BIOS on Raq4i


> On Monday 30 December 2002 15:53, Bruce Timberlake wrote:
> > -----BEGIN PGP SIGNED MESSAGE-----
> > Hash: SHA1
> >
> > > BIOSes are written for very specific hardware.  A K6-powered
> > > RAQ3 or RAQ4 is very, very different from a PIII-powered RAQ550.
> > > Different CPU, bridge chipset, IO controller, et cetera.
> >
> > And the RaQ 550 OSRCD has correct ROM images for each type of
> > hardware...
> >
> > > If you did indeed successfully (though I use the term ironically)
> > > flash the BIOS, you'll need to pull the now-bad one and replace
> > > it with another.  I believe Bruce Timberlake and others gave
> > > details a few months ago, perhaps on -developers... check the
> > > archives.
> >
> > Wasn't me -- I think it was Gerald.  Also, "pulling" it is The Tricky
> > Part -- it's not a socketed chip, it's soldered in place.  And I
> > don't even know what type of chip it is, or where to get a
> > replacement, etc.  Or how you'd boot the box enough to get a
> > "Sun-issued" image into it provided you could replace the chip.  You
> > need a standalone ROM burner I think...
>
> Yes pulling the chip, is a little touchy.
> The EEPROM is AM29F080B-90EC.
> I need to get more anyone know where i can buy some.
>
> We install a socket on the ones we repaired so far.
>
> Gerald


I don't know of any US companies with that exact model number available...

I haven't confirmed this, but ST part number M29F080A90N1 is supposed to
work as a substitue/replacement for the AM29F080B-90EC.

If you want to try the ST chip you can order them here:
http://uk1.farnell.com/Search/search4-frame.jhtml?_DARGS=%2Fcommon%2Fprodsea
rchform.jhtml

1-9 pieces looks to be around $21 USD each.

Good luck!
Chris Lathem



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