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Date:      Fri, 03 Jan 1997 16:22:51 -0600
From:      Randy DuCharme <randyd@nconnect.net>
To:        Steve Passe <smp@csn.net>
Cc:        Andreas Klemm <andreas@klemm.gtn.com>, smp@freebsd.org
Subject:   Re: APIC_IO fails with Tyan tomcat II board
Message-ID:  <32CD86BB.41C67EA6@nconnect.net>
References:  <199701031649.JAA11836@clem.systemsix.com>

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Steve Passe wrote:
> 
> Hi,
> 
> > I have a tyan tomcat II with 2 x 133 MHz CPU's, 512k burst cache
> > and 64 MB RAM. The SMP kernel runs fine, when I'm only defining
> >
> > options SMP
> > options NCPU=2
> >
> > If I'n enabling the option APIC_IO, then the machine boots until
> > the login prompt. Shortly before it starts up the 2nd CPU, but
> > after that hangs.
> >
> > The keaboard is dead. An rlogin to it worked, I got an login
> > prompt, could login and send one command, after that the session
> > was frozen and I wasn't able to start another remote login.
> >
> > Are you interested in more infos on this ? Or is this currently
> > expected ?
> 
> definately NOT expected.  Are there other tomcat II user's out there running
> with APIC_IO enabled???
> 
> try a kernel with these set:
> 
> options         SMP
> options         APIC_IO
> options         SMP_INVLTLB
> 


Greetings,

FWIW, I have a Tomcat III running with APIC_IO enabled.  Haven't had one
problem with it.  Memory timing is pretty aggressive too!  ( What's
SMP_INVLTLB ?)

Randy



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