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Re: Solving the Floating-Point Goldilocks Problem!

From Patrick Scheible <kkt@zipcon.net>
Newsgroups comp.arch, alt.folklore.computers
Subject Re: Solving the Floating-Point Goldilocks Problem!
References (13 earlier) <4E5FA249.7040604@SPAM.comp-arch.net> <PM0004ABF5A32D0B6C@ac8120a2.ipt.aol.com> <4E610639.1060200@SPAM.comp-arch.net> <PM0004AC0AC5FEAC96@aca221f7.ipt.aol.com> <j3tn7c$3si$1@dont-email.me>
Date 2011-09-05 22:48 -0700
Message-ID <86vct68blk.fsf@zipcon.net> (permalink)
Organization The Zip Connection (zipcon.net)

Cross-posted to 2 groups.

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Peter Flass <Peter_Flass@Yahoo.com> writes:

> On 9/3/2011 10:57 AM, jmfbahciv wrote:
>> <snort>   I don't consider our byte instructions CISCy.  My opinion,
>> which has to be taken as an uneducated opinion in c.a, is that
>> the PDP-10 had the RISC philosophy underneath.
>
> I'd not say they were CISCy.  As I recall there was ILDB and IDPB for
> byte loads and stores that were register-storage; no storage to
> storage stuff.  The comp.arch people know a lot more about the details
> than I do, but a barrel-shifter and a few gates for masking would be
> all you'd need.

Yeah, but the PDP-10 also featured arbitrary levels of indirection on
memory accesses.  It made possible a lot of interesting data structures,
but also made it very difficult to tell which pieces of memory any given
instruction were going to access in advance.

-- Patrick

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Thread

Re: Solving the Floating-Point Goldilocks Problem! jmfbahciv <See.above@aol.com> - 2011-09-01 13:39 +0000
  Re: Solving the Floating-Point Goldilocks Problem! "Andy \"Krazy\" Glew" <andy@SPAM.comp-arch.net> - 2011-09-01 08:18 -0700
    Re: Solving the Floating-Point Goldilocks Problem! jmfbahciv <See.above@aol.com> - 2011-09-02 13:44 +0000
      Re: Solving the Floating-Point Goldilocks Problem! "Andy \"Krazy\" Glew" <andy@SPAM.comp-arch.net> - 2011-09-02 09:37 -0700
        Re: Solving the Floating-Point Goldilocks Problem! Patrick Scheible <kkt@zipcon.net> - 2011-09-02 10:21 -0700
          Re: Solving the Floating-Point Goldilocks Problem! rpw3@rpw3.org (Rob Warnock) - 2011-09-05 06:11 -0500
        Re: Solving the Floating-Point Goldilocks Problem! jmfbahciv <See.above@aol.com> - 2011-09-03 14:57 +0000
          Re: Solving the Floating-Point Goldilocks Problem! Peter Flass <Peter_Flass@Yahoo.com> - 2011-09-03 13:13 -0400
            Re: Solving the Floating-Point Goldilocks Problem! rpw3@rpw3.org (Rob Warnock) - 2011-09-05 06:41 -0500
              Re: Solving the Floating-Point Goldilocks Problem! Peter Flass <Peter_Flass@Yahoo.com> - 2011-09-05 08:21 -0400
              Re: Solving the Floating-Point Goldilocks Problem! jmfbahciv <See.above@aol.com> - 2011-09-05 13:26 +0000
            Re: Solving the Floating-Point Goldilocks Problem! Patrick Scheible <kkt@zipcon.net> - 2011-09-05 22:48 -0700
              Re: Solving the Floating-Point Goldilocks Problem! Quadibloc <jsavard@ecn.ab.ca> - 2011-09-06 16:51 -0700
                Re: Solving the Floating-Point Goldilocks Problem! Morten Reistad <first@last.name> - 2011-09-07 14:14 +0200
                Re: Solving the Floating-Point Goldilocks Problem! Patrick Scheible <kkt@zipcon.net> - 2011-09-07 09:45 -0700
                Re: Solving the Floating-Point Goldilocks Problem! Rob Doyle <radioengr@gmail.com> - 2011-09-07 18:54 -0700
                Re: Solving the Floating-Point Goldilocks Problem! Quadibloc <jsavard@ecn.ab.ca> - 2011-09-08 00:53 -0700
                Re: Solving the Floating-Point Goldilocks Problem! MitchAlsup <MitchAlsup@aol.com> - 2011-09-08 08:00 -0700

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