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Date:      Wed, 07 Jun 2000 18:31:58 -0700
From:      Mike Smith <msmith@freebsd.org>
To:        Kevin Day <toasty@dragondata.com>
Cc:        freebsd-smp@freebsd.org
Subject:   Re: Tyan Thunder 2400/i840 SMP no good 
Message-ID:  <200006080131.SAA03748@mass.cdrom.com>
In-Reply-To: Your message of "Wed, 07 Jun 2000 20:21:09 CDT." <200006080121.UAA03661@celery.dragondata.com> 

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> > 
> > > 
> > > I'm trying to get SMP working on my Tyan Thunder 2400 motherboard. When I
> > > recompile the kernel with SMP support and reboot I get as far as 'Testing
> > > 8254 interrupt delivery' and it hangs. The console is still responsive,
> > > though.
> > > 
> > > Any ideas?
> > 
> > You need -stable or -current to run on the i840.
> > 
> 
> It wasn't until after I posted that I realized that I wasn't running
> -current. I am now, and I've gotten past the boot problems.
> 
> However, I'm now seeing weird data corruption in RAM, spurious SIGBUS or
> SIGSEGV's, etc... I've replaced the RAM and CPUs and am still seeing it. I'm
> going to try a new ram vendor, as well as swapping motherboards next.
> 
> Has anyone else experienced this on a similar system? I know the i840 is
> highly picky when it comes to SDRAM....

Yes.  I've even see this with "high quality" SDRAM; the i840 board I'm 
currently using has some cheap and nasty 64MB DIMMs which work fine, but 
most of the "high quality" parts I've tried have failed miserably.

-- 
\\ Give a man a fish, and you feed him for a day. \\  Mike Smith
\\ Tell him he should learn how to fish himself,  \\  msmith@freebsd.org
\\ and he'll hate you for a lifetime.             \\  msmith@cdrom.com




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