|<><><><><> Original message from Eric W. Biederman <><><><><>
|Ronald G Minnich <[EMAIL PROTECTED]> writes:
|
|> On 28 Aug 2001, Eric W. Biederman wrote:
|> > I'd be suprised if they don't get it. At least the basics. For
|> > things like the AMD760 the documentation spells out fairly clearly
|> > where everything should be coming from. And the SPD isn't magic just
|> > a label in silcon form that the manufacturers add to their DIMMS.
|> >
|>
|> What we did see on one bios is that they didn't do as good a job with SPD
|> as Ollie. I have also been told that BIOS programmers do a suboptimal job
|> since there are so many SDRAMs out there with SPD data that is wrong.
|
|Using SDRAMS with incorrect serial EEPROMS is a lame excuse, for not
|using the SPD data.
Ok, so what do you recommend the BIOS do in the case that the SPD data
is wrong for the SDRAM chips and configuration of the DIMM?
|I think what happens is that board manufactures license a BIOS kit
|from award, or ali. Customize it for their board. And then ship the
|board. But I don't think this gets much code reuse, between different
|board manufacturers. And because you have so many people doing it you
|have serious variations in quality.
I haven't looked at any of the x86 chipsets very carefully, but to
properly use SPD data on other boards I'm familiar with, requires knowing
information about board layout and signal propogation. How are your
factoring these parameters in to your x86 chipset support?
TJ Merritt
[EMAIL PROTECTED]
1-415-834-9111
