15 Dec 2019: There is now a fully working 64-bit version of Linux Poplog for AMD64/X86-64 machines, named Poplog Version 16, with new instructions for downloading and installing on several versions of linux, available here:
http://www.cs.bham.ac.uk/research/projects/poplog/V16/AREADME.html

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THIS IS THE LATEST VERSION OF 32-BIT POPLOG FOR LINUX ON PC (As of 19 Feb 2012)
(Unfortunately this file has not been regularly updated. So see the main 'latest-poplog' file for information about what is currently available.)

This file is http://www.cs.bham.ac.uk/research/poplog/latest-poplog/news-and-changes.html
For information about downloading and prerequisites see http://www.cs.bham.ac.uk/research/poplog/latest-poplog/

For information on other versions of poplog available see:
http://www.cs.bham.ac.uk/research/projects/poplog/freepoplog.html#contents

Further information on Poplog and its history is available:
http://www.cs.bham.ac.uk/research/projects/poplog/poplog.info.html

NEWS ABOUT CHANGES TO LINUX POPLOG
(Latest first.)

• 19 Feb 2012: Slight change to version 15.65. pop_internal_version 156500
  Default commands would not link motif on new version of Ubuntu. This turned out to be due to new linker default on Ubuntu but not included in Fedora.
  A fix was added to $usepop/pop/src/syscomp/asmout.p to produce a slightly different shell script to link a new poplog.

• 27 Dec 2011 Video tutorials on Poplog/Pop11/Ved available on Youtube

  For details see http://www.cs.bham.ac.uk/research/projects/poplog/cas-ai/video-tutorials.html
  The list is expected to grow.

• 27 Dec 2011: Version 15.65 now available. pop_internal_version 156500
  Reverted to old decimal format (v15.65, not v15.6.5, to avoid internal complications).
  A major change to Ved: the code for optimising screen refreshing during scrolling part of the screen has been disabled.
  It worked properly only in xterm windows. Various other console windows did not support the optimisation properly,
  e.g. urxvt (and its variants), and this caused corruption of the editor window.
  (Thanks to Will Price for pointing out the urgent need, and for help testing the changes.)
  Installation procedure unchanged.
  See http://www.cs.bham.ac.uk/research/projects/poplog/v15.65

  Latest instructions for DOWNLOADING linux poplog.
  http://www.cs.bham.ac.uk/research/projects/poplog/latest-poplog#installing

• CHANGES.txt
  Changes to the main poplog system.
  (In a separate text file: included as part of poplog.)

• CHANGES-PACKAGES.txt
  Changes to Package subsystems.
  (In a separate text file: included as part of poplog.)
  (E.g. Eliza can now speak her answers. Some extensions to poprulebase.)

• NEWS 12 Aug 2010: Version 15.63 out of date, replaced by V15.6.4
  pop_internal_version 156400
  http://www.cs.bham.ac.uk/research/projects/poplog/v15.6.4
  ALTERATIONS TO POPLOG COMMON LISP:
  Replaced some Poplog common lisp files with new files, provided by Waldek Hebisch, as described in
  http://www.cs.bham.ac.uk/research/projects/poplog/lisp-mods

• NEWS 5 Aug 2009: Version 15.6301 (pop_internal_version 156301)

      Installation scripts simplified ('bham' parameter no longer needed)
      Error handling in Ved improved (thanks to help from Steve Isard)
      see
          CHANGES.txt
  

• NEWS 29 Jun 2009: Version 15.63 (pop_internal_version 156300)

      Removed special Ved characters from all the documentation files to make
      things easy for people who don't wish to learn to use Ved or XVed.
  

  The main difference between this version (v15.63) and the previous version v15.62 is that in V15.63 version all the Poplog documentation files were converted so that they can now be read in any text editor or web browser. Previously the files included special graphical characters for use with the Poplog editor Ved/XVed. This was a disadvantage for users who did not wish to switch to a new editor, even though the poplog editor has many convenient built in links with the rest of poplog, including the compilers, the documentation directories and the library directories.

• NEWS 20 Feb 2009: Changes to Popvision http://www.cs.bham.ac.uk/research/projects/poplog/popvision/

      Two changes to the Sussex popvision library, described in
          $usepop/pop/packages/popvision/README.bham
  
          1. popvision/lib/Xcolour_to_rgb.p
              added directory '/usr/share/X11/rgb.txt'
              to  Xcolour_to_rgb_filelist
  
          2. popvision/lib/sunrasterfile.p
              Installed fix by Jack Hollingworth (Reading University) for
              updater of sunrasterfile for use on little-endian machines.
  

• NEWS 4 Dec 2008: Version 15.62

      This version makes it unnecessary to use 'setarch', thanks to
      code supported by Waldek Hebisch
      For more detailed changes see
      http://www.cs.bham.ac.uk/research/projects/poplog/v15.63/CHANGES.txt
  

• NEWS: 31st March 2008

      A problem in the editor that made it produce multiple copies of
      the same file (especially output.p) has been identified and removed.
  

• NEWS 25 Dec 2007

      Expanded the instructions for Ubuntu users, which turned out to
      be incomplete.
  
      Also modified several of the Poplog scripts to invoke 'bash' instead of 'sh',
      as it turns out that these two are not equivalent on all systems.
      (Ubuntu Gutsy links 'sh' to 'dash', not 'bash')
  

• NEWS 23 Nov 2007: New highlighting command for editor

      Added simple pop-11 syntax highlighting command for VED, in
          $usepop/pop/lib/ved/ved_highlight.p
  
      The command
          ENTER highlight
      will underline all syntax words, apart from those included in
      the list assigned to global variable
          highlight_exceptions
  
      To see what the exceptions are do
          ENTER showlib highlight_exceptions
  
      If you don't want to fetch a complete poplog system, the file
      can be downloaded on its own from
          http://www.cs.bham.ac.uk/research/projects/poplog/v15.62/v15.62/pop/lib/ved/ved_highlight.p
      Simply install it in the directory $usepop/pop/lib/ved/ in your
      current poplog system. It will then be autoloadable.
      Undo highlighting with ENTER strip
  

• NEWS 5 Oct 2007: New version of Poplog v15.61: pop_internal_version 156101

      The most important change is that the problem described in Bug 32
      in here (originally reported by Steve Leach):
  
      http://www.cs.bham.ac.uk/research/projects/poplog/bugfixes/BUGREPORTS
  
       -- 32. (18 Feb 2004) Bug in current_directory under Linux (and Unix?)
  
      has started causing serious problems with new releases of Linux
      installed with enhanced security settings. This was reported
      recently to the poplog-dev list by Stephen Isard.
  
      The problem was fixed by changing the pop-11 mechanism for
      getting at the current directory, provided by Waldek Hebisch
      and described in the BUGREPORTS file as item 66:
  
       -- 66. 29 Sep 2007 New version of unix_dir.p
  
      There are a few other minor improvements to the installation
      process. The easiest way to fetch and install 32 bit Linux
      Poplog remains the use of one of
      the get-and-install scripts described below.
  

• NEWS 11 Sep 2007: Poplog version 15.61

      New version of Poplog v15.61 available, with minor fixes and
      revamped scripts to overcome the problems caused by Linux
      security settings. Most easily installed by running one of
      the get-and-install scripts described below.
  
      There is a new file that gives an overview of what happens when
      the poplog installation script is run. It is available as
      http://www.cs.bham.ac.uk/research/projects/poplog/latest-poplog/INSTALLATION-OVERVIEW.txt
  

This file maintained by:
Aaron Sloman
http://www.cs.bham.ac.uk/~axs/
Last Updated: 5 Aug 2009;22 Jan 2010;12 Aug 2010; 27 Dec 2011; 8 Jan 2020