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Re: disARMed

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"Peter Flass" <peter_flass@yahoo.com> wrote in message 
news:99861372.471285495.469641.peter_flass-yahoo.com@news.eternal-september.org...
> Osmium <r124c4u102@comcast.net> wrote:
>> "Scott Lurndal" wrote:
>>
>>> RISC instructions are designed such that they may be executed in
>>> a single clock cycle (absent load latencies, which range in the
>>> 3-6 cycle range from level one cache memory).
>>
>> Well, *that* got my attention.  There go multiply, divide and floating
>> point.  But looking at the web a bit, ISTM that both IBM and HP (and, I
>> suppose, others) did a Clinton on this - redefining words to suit their
>> purpose.. I suppose if I had the patience I would find these are called
>> "co-processors" or this is "RISC Mark-II" or some such weaseling.  I 
>> think I
>> will just tentatively reach the conclusion, for my purposes, that RISC is 
>> no
>> longer a definitive collection of letters. In any serious discussion one
>> must ask "Which RISC are *you* talking about".
>>
>>
>
> Wasn't it one of the early Sun boxes that used two instructions to do
> division?  That's carrying the idea of RISC a bit too far.
>

ISTM that the Cray I supercomputer had *no* divide instruction.  It divided 
by doing a reciprocal instruction and then a multiply instrution.  Perhaps 
this is the kind of thing you are referring to.

-- 

numerist at aquaporin4 dot com

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disARMed "gareth" <no.spam@thank.you.invalid> - 2015-12-04 11:13 +0000
  Re: disARMed Bob Eager <news0005@eager.cx> - 2015-12-04 11:52 +0000
  Re: disARMed Ahem A Rivet's Shot <steveo@eircom.net> - 2015-12-04 12:11 +0000
  Re: disARMed scott@slp53.sl.home (Scott Lurndal) - 2015-12-04 14:07 +0000
  Re: disARMed Morten Reistad <first@last.name.invalid> - 2015-12-04 13:30 +0100
    Re: disARMed cb@elaine.df.lth.se (Christian Brunschen) - 2015-12-05 16:35 +0000
  Re: disARMed Andrew Swallow <am.swallow@btinternet.com> - 2015-12-04 17:03 +0000
  Re: disARMed Jon Elson <jmelson@wustl.edu> - 2015-12-04 14:00 -0600
    Re: disARMed "gareth" <no.spam@thank.you.invalid> - 2015-12-05 20:12 +0000
      Re: disARMed Jon Elson <jmelson@wustl.edu> - 2015-12-07 16:54 -0600
    Re: disARMed Stephen Sprunk <stephen@sprunk.org> - 2015-12-06 13:35 -0600
      Re: disARMed timcaffrey420@gmail.com - 2015-12-06 17:28 -0800
  Re: disARMed Howard S Shubs <howard@shubs.net> - 2015-12-05 10:53 +0000
    Re: disARMed "gareth" <no.spam@thank.you.invalid> - 2015-12-05 12:07 +0000
      Re: disARMed Howard S Shubs <howard@shubs.net> - 2015-12-07 06:17 +0000
        Re: disARMed "gareth" <no.spam@thank.you.invalid> - 2015-12-07 10:35 +0000
          Re: disARMed Andy Burns <usenet.feb2014@adslpipe.co.uk> - 2015-12-07 12:22 +0000
            Re: disARMed "gareth" <no.spam@thank.you.invalid> - 2015-12-07 12:32 +0000
              Re: disARMed Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2015-12-07 18:22 +0000
                Re: disARMed "gareth" <no.spam@thank.you.invalid> - 2015-12-07 18:30 +0000
    Re: disARMed Peter Flass <peter_flass@yahoo.com> - 2015-12-05 08:11 -0500
      Re: disARMed Ahem A Rivet's Shot <steveo@eircom.net> - 2015-12-05 14:21 +0000
        Re: disARMed Jon Elson <elson@pico-systems.com> - 2015-12-05 13:38 -0600
          Re: disARMed Michael Black <et472@ncf.ca> - 2015-12-05 16:45 -0500
            Re: disARMed "gareth" <no.spam@thank.you.invalid> - 2015-12-05 23:38 +0000
          Re: disARMed Ahem A Rivet's Shot <steveo@eircom.net> - 2015-12-05 21:49 +0000
          Re: disARMed Stan Barr <plan.b@bluesomatic.org> - 2015-12-06 08:01 +0000
            Re: disARMed hda <agent700@ay.invalid> - 2015-12-06 12:16 +0100
              Re: disARMed Stan Barr <plan.b@bluesomatic.org> - 2015-12-06 16:13 +0000
                Re: disARMed Morten Reistad <first@last.name.invalid> - 2015-12-06 20:51 +0100
          Re: disARMed scott@slp53.sl.home (Scott Lurndal) - 2015-12-07 14:52 +0000
          Re: disARMed Walter Banks <walter@bytecraft.com> - 2015-12-07 14:33 -0500
            Re: disARMed jmfbahciv <See.above@aol.com> - 2015-12-08 13:58 +0000
        Re: disARMed scott@slp53.sl.home (Scott Lurndal) - 2015-12-07 14:49 +0000
      Re: disARMed David Wade <dave.g4ugm@gmail.com> - 2015-12-05 15:14 +0000
        Re: disARMed Anne & Lynn Wheeler <lynn@garlic.com> - 2015-12-05 08:42 -0800
          Re: disARMed Quadibloc <jsavard@ecn.ab.ca> - 2015-12-05 17:20 -0800
      Re: disARMed Jon Elson <elson@pico-systems.com> - 2015-12-05 13:35 -0600
        Re: disARMed Quadibloc <jsavard@ecn.ab.ca> - 2015-12-06 03:09 -0800
        Re: disARMed Morten Reistad <first@last.name.invalid> - 2015-12-06 12:16 +0100
          Re: disARMed "gareth" <no.spam@thank.you.invalid> - 2015-12-06 13:09 +0000
      Re: disARMed scott@slp53.sl.home (Scott Lurndal) - 2015-12-07 14:47 +0000
        Re: disARMed "Osmium" <r124c4u102@comcast.net> - 2015-12-07 13:38 -0600
          Re: disARMed Jon Elson <jmelson@wustl.edu> - 2015-12-07 16:37 -0600
            Re: disARMed Stan Barr <plan.b@bluesomatic.org> - 2015-12-08 08:00 +0000
            Re: disARMed "Osmium" <r124c4u102@comcast.net> - 2015-12-08 07:33 -0600
          Re: disARMed scott@slp53.sl.home (Scott Lurndal) - 2015-12-08 14:23 +0000
          Re: disARMed Peter Flass <peter_flass@yahoo.com> - 2015-12-08 11:55 -0500
            Re: disARMed Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2015-12-08 20:21 +0000
            Re: disARMed "Charles Richmond" <numerist@aquaporin4.com> - 2015-12-08 16:48 -0600

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