Re: PR1ME C compiler sources

From	"Derek M. Jones" <derek@_NOSPAM_knosof.co.uk>
Newsgroups	comp.compilers
Subject	Re: PR1ME C compiler sources
Date	2019-09-26 11:53 +0100
Organization	virginmedia.com
Message-ID	<19-09-009@comp.compilers> (permalink)
References	<19-09-003@comp.compilers> <19-09-004@comp.compilers> <19-09-006@comp.compilers> <19-09-007@comp.compilers>

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John,

> [The Prime machines suffered from having too many versions of
> everything.  Page 41 of that quick reference card has a 48 bit pointer
> format with a bit number in the low 16 bits.  It seems unlikely that a
> C compiler would use that as a general pointer format since it doesn't
> fit in any sort of normal int, and it's not what you'd want to point
> at an int or a function or anything bigger than a char. -John]

Some Cray machines and DSP chips have a similar problem with using
word addressing.

Several solve the problem by defining the word to be the smallest
addressable unit, making chars 48-bits in the case of some DSPs.

There seems to be a general dearth of PR1ME C compiler reference
manuals (which wold contain the details).

--
Derek M. Jones
blog:shape-of-code.coding-guidelines.com
[C had issues on any word addressed machine.  Some of the hacks people
tried on the PDP-10 were pretty ugly, too. -John]

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PR1ME C compiler sources "Derek M. Jones" <derek@_NOSPAM_knosof.co.uk> - 2019-09-25 15:27 +0100
  Re: PR1ME C compiler sources arnold@skeeve.com (Aharon Robbins) - 2019-09-25 18:32 +0000
    Re: PR1ME C compiler sources drb@ihatespam.msu.edu (Dennis Boone) - 2019-09-25 20:02 -0500
      Re: PR1ME C compiler sources arnold@skeeve.com (Aharon Robbins) - 2019-09-26 10:57 +0000
    Re: PR1ME C compiler sources drb@ihatespam.msu.edu (Dennis Boone) - 2019-09-25 20:04 -0500
      Re: PR1ME C compiler sources drb@ihatespam.msu.edu (Dennis Boone) - 2019-09-25 20:28 -0500
        Re: PR1ME C compiler sources "Derek M. Jones" <derek@_NOSPAM_knosof.co.uk> - 2019-09-26 11:53 +0100
          Re: PR1ME C compiler sources drb@ihatespam.msu.edu (Dennis Boone) - 2019-09-27 10:19 -0500
            Re: PR1ME C compiler sources "Derek M. Jones" <derek@_NOSPAM_knosof.co.uk> - 2019-09-28 00:48 +0100
              Re: PR1ME C compiler pointer management drb@ihatespam.msu.edu (Dennis Boone) - 2019-09-28 11:08 -0500
                Re: PR1ME C compiler sources and pointer formats Christopher F Clark <christopher.f.clark@compiler-resources.com> - 2019-09-29 07:48 -0400
                Re: PR1ME C compiler sources and pointer formats drb@ihatespam.msu.edu (Dennis Boone) - 2019-09-30 22:10 -0500
          Re: PR1ME C compiler sources George Neuner <gneuner2@comcast.net> - 2019-09-27 20:56 -0400
            Re: C compiler pointer management on DSPs "Derek M. Jones" <derek@_NOSPAM_knosof.co.uk> - 2019-09-28 19:19 +0100
              Re: C compiler pointer management on DSPs David Brown <david.brown@hesbynett.no> - 2019-09-29 10:53 +0200
                Re: C compiler pointer management on DSPs Kaz Kylheku <847-115-0292@kylheku.com> - 2019-09-30 23:50 +0000
                Re: C compiler pointer management on DSPs George Neuner <gneuner2@comcast.net> - 2019-10-03 01:34 -0400
                Re: C compiler pointer management on DSPs gah4@u.washington.edu - 2020-02-27 14:23 -0800
                Re: C compiler pointer management on DSPs robin51@dodo.com.au - 2020-02-28 10:26 +1100
                Re: C compiler pointer management on DSPs gah4@u.washington.edu - 2020-02-28 02:33 -0800

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