Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sun-barr!ccut!wnoc-tyo-news!scslwide!wsgw!pcgw!samba
From: samba@sm.sony.co.jp (Masaaki Hoshino)
Newsgroups: comp.sys.novell
Subject: Re: i486 with Netware 386
Summary: Lost Interrupt problem on 486
Message-ID: <1294@pcgw.sm.sony.co.jp>
Date: 28 Feb 91 09:15:47 GMT
References: <91042.192216ALG106@psuvm.psu.edu> <1154@intelisc.isc.intel.com> <55206@bigtex.cactus.org>
Organization: Sony Corporation, Super Micro Group, PC Division, Tokyo, Japan
Lines: 37

In article <55206@bigtex.cactus.org>, james@bigtex.cactus.org (James Van Artsdalen) writes:
> > I asked Novell IMSP division about it. They said this problem is caused by
> > 486 CPU with Programmable Interrupt Controller(PIC), and the above messages
> > will occur with Netware 3.1 on all 486 systems regardless of bus type( ISA,
> > EISA, MCA) with varying frequency.
> 
> These should not happen with a C step 486 at all, I believe.  Even
> with a B step 486, I think Intel published an errata with suggested
> hardware fixes to put on the motherboard.  The bug is independent of
> bus type and CPU frequency.  It isn't Netware specific either - the
> system BIOS usually doesn't say anything when an interrupt is lost.
> 
> Even with a B step 486, some interrupt controllers will not confused
> by the behavior of the CPU, so just because you have B step doesn't
> mean you will get errors.
> 
> Have your engineers contact Intel about the tech note on this 486 bug.

     Yes. Our hardware engineers did.
     He sais that we use C step 486 and next release of 486 ( D step ?) will
     fix this problem.

     The 1st and 2nd problem I said before are not so serious problem for us, 
     because the server does not ABEND. :-> 

     Thank you.

     P.S.
        Sony PCX-700(486 33MHz EISA PC, SCSI HD) is domestic model in Japan.
        not available in U.S.A or another foreign country.
 
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						Masaaki Hoshino
						Sony corp.
						Tokyo Japan
						samba@sm.sony.co.jp
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