Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!uwm.edu!bionet!ames!ames.arc.nasa.gov!lamaster
From: lamaster@ames.arc.nasa.gov (Hugh LaMaster)
Newsgroups: comp.arch
Subject: Re: The Killer Micro From Hell [actually, reliability]
Keywords: Tandem Cyclone
Message-ID: <40694@ames.arc.nasa.gov>
Date: 16 Jan 90 23:15:42 GMT
References: <34030@mips.mips.COM> <4322@nttmhs.ntt.JP> <39807@ames.arc.nasa.gov> <3101@umn-d-ub.D.UMN.EDU> <28674@amdcad.AMD.COM> <7566@pt.cs.cmu.edu> <34469@mips.mips.COM>
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In article <34469@mips.mips.COM> mash@mips.COM (John Mashey) writes:
>		How about parity and ECC on busses?
>		How about parity on ALU operations?

Has anyone a good reference for error checking on ALU operations?  I
remember reading about error checking in the IBM 360/67.  The typical
pipelined machine of my youth, the CDC 7600, had no such checking.  It is
really fun to be in a central service bureau the day you discover that
your F.P. operations have been broken for the last three days  :-)


  Hugh LaMaster, m/s 233-9,  UUCP ames!lamaster
  NASA Ames Research Center  ARPA lamaster@ames.arc.nasa.gov
  Moffett Field, CA 94035     
  Phone:  (415)694-6117