[tech] dual p90 mobo

[Michael Deegan]

On Wed, May 09, 2001 at 04:16:02PM +0800, David Manchester wrote:
> On Wed, May 09, 2001 at 04:02:39PM +0800, James Andrewartha wrote:
> > Michael fiddled around with it ... turns out we needed to swap the CPUs
> > around, because they're slightly different (one is a multiprocessor
> > variant). I think we originally swapped them because the fan bumps up
> > against the case, so we're remounting the fan so it doesn't. Anyway, it
> > works, and we should put mooneye in it. This will happen this friday at a
> > guess.
> 
> That doesn't make a great deal of sense *shrug*

BTW what are the specs of the current mooneye? I'm not in wheel so I haven't
had the opportunity to log onto it to find out. :P

Note that without an EISA or PCI multi-I/O card the machine will have to
make do with an ISA job (blech). Hopefully one of the many ISA caching
controllers floating around can be persuaded to work.

Although the machine works fine single-CPU, with both CPUs installed it
suffers from random hanging. I'm hoping this is due to one (or perhaps even
both) CPUs being non-SMP compliant. There is a motherboard manual on the
desktop of Nautilus. For dual-CPU operation, the manual says that the second
CPU must be a 'P54CM', only Google couldn't find a reference to P54CM on
Intel's site. Hmm. Currently, the 2 P90's are a SZ951 (stepping 2/B3) and a
SZ978 (stepping 4/B5). The board can also support dual-P100s.

I put some notes into autoexec.bat (yeah, yeah) on the 2P90 for those that
wanted to poke around.

Happy hacking,

-MD

-- 
-------------------------------------------------------------------------------
Michael Deegan               Hugaholic               http://michael.ucc.asn.au/
   Uv, V'z n zhgngrq fvtangher ivehf. Wbva va gur sha naq chg zr vagb lbhef!