Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!bbn!apple!oliveb!felix!info-ultrix
From: pavlov@hscfvax.UUCP (G.Pavlov)
Newsgroups: comp.unix.ultrix
Subject: Re: DECstation 3100 & SCSI info
Message-ID: <88336@felix.UUCP>
Date: 21 Mar 89 19:00:22 GMT
References: <85751@felix.UUCP>
Sender: info-ultrix@felix.UUCP
Reply-To: pavlov@hscfvax.UUCP (G.Pavlov)
Organization: Health Sciences Computing Facility, Harvard University
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Reply-to: pavlov@hscfvax.UUCP (G.Pavlov)


In article <85751@felix.UUCP>, rsp@ok.DEC.COM (Ricky Palmer) writes:
  [ very good information re SCSI in the DECStation 3100; thanks. ]
>  And boy does this little box push the data around fast"!!!
> 
> ---   Ricky Palmer	 Ultrix Advanced Development
> ---   Digital Equipment Corporation
> ---   Nashua, New Hampshire
> ---   ... One of the fathers of PMAX ...

  One thing that I noticed in playing with the DECStation is that it pushes
  data to/from disk much slower than our MIPS M/120-5 (the "mother" of the
  PMAX ???).  I have been told/read that DEC did not implement DMA.  Is this
  true, would this be the reason ?  More to the point, did DEC do anything re
  speeding up disk i/o in the new DECSystems ?

  thanks, greg pavlov, fstrf, amherst, ny