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Re: the FORTH computer language

From Michael Black <et472@ncf.ca>
Newsgroups alt.folklore.computers
Subject Re: the FORTH computer language
Date 2015-10-26 17:41 -0400
Organization National Capital Freenet, Ottawa, Ontario, Canada
Message-ID <alpine.LNX.2.02.1510261738390.28044@darkstar.example.org> (permalink)
References (19 earlier) <n0j050$2n8$1@dont-email.me> <PM00052300F849B5FD@aca2d620.ipt.aol.com> <11ba64cd-50b8-4778-9c06-97e204309109@googlegroups.com> <f7b69272-8c9a-4a46-a0ae-6f5e9f5a41fb@googlegroups.com> <n0lv7v$g5t$1@dont-email.me>

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On Mon, 26 Oct 2015, Charles Richmond wrote:

> "Quadibloc" <jsavard@ecn.ab.ca> wrote in message 
> news:f7b69272-8c9a-4a46-a0ae-6f5e9f5a41fb@googlegroups.com...
>> On Monday, October 26, 2015 at 7:49:46 AM UTC-6, Quadibloc wrote:
>> 
>>> The PDP-9 was microcoded (which surprised me, given the nature of its
>>> instruction set) - Gordon Bell notes that in his book "Computer 
>>> Engineering".
>> 
>> Reviewing that book, I first saw a mention that the 11/20 was hardwired, 
>> and
>> the PDP-11 instruction set was simple enough not to make microcode 
>> compulsory.
>> Then it was noted that the PDP-11/60 used microcode, and even had a 
>> writable
>> control store, so that customers could add their own functionality; and 
>> that
>> the 11/40 made a more limited use of microcode. Later, it was noted that 
>> all
>> the PDP-11 models used microcoded control units with the sole exception of 
>> the
>> 11/20 (page 329) as someone noted in this thread.
>> 
>
> ISTM that the LSI-11 I worked on... had an extra IC socket for a floating 
> point microcode extention.  If you wanted the floating point instructions, 
> you paid extra and got the extra chip.
>
That sounds familiar.  The 68000 had a similar arrangement (so I assume it 
came from what you remember), so if a certain code was implemented, it 
caused an exception or something so you could run software.  I think 
specifically for floating point, but maybe for others.  So early versions 
of Linux had floating point in software, while later it wasn't needed 
because it had been added in hardware.  But there was an anticipation of 
the future, so when the hardware coprocessor came along, it was seemless.

   Michael

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the FORTH computer language hancock4@bbs.cpcn.com - 2015-10-19 11:57 -0700
  Re: the FORTH computer language mentificium@gmail.com - 2015-10-20 05:05 -0700
  Re: the FORTH computer language Michael Black <et472@ncf.ca> - 2015-10-20 13:57 -0400
    Re: the FORTH computer language Daiyu Hurst <daiyu.hurst@gmail.com> - 2015-10-24 21:26 -0700
      Re: the FORTH computer language "gareth" <no.spam@thank.you.invalid> - 2015-10-25 10:17 +0000
      Re: the FORTH computer language "Charles Richmond" <numerist@aquaporin4.com> - 2015-10-25 18:13 -0500
        Re: the FORTH computer language Michael Black <et472@ncf.ca> - 2015-10-25 21:35 -0400
          Re: the FORTH computer language "Charles Richmond" <numerist@aquaporin4.com> - 2015-10-26 14:28 -0500
            Re: the FORTH computer language Michael Black <et472@ncf.ca> - 2015-10-26 17:46 -0400
              Re: the FORTH computer language Peter Flass <peter_flass@yahoo.com> - 2015-10-26 17:49 -0400
                Re: the FORTH computer language "Charles Richmond" <numerist@aquaporin4.com> - 2015-10-27 15:29 -0500
              Re: the FORTH computer language Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2015-10-27 19:55 +0000
  Re: the FORTH computer language "gareth" <no.spam@thank.you.invalid> - 2015-10-21 11:45 +0100
    Re: the FORTH computer language Whiskers <catwheezel@operamail.com> - 2015-10-21 12:34 +0000
      Re: the FORTH computer language "gareth" <no.spam@thank.you.invalid> - 2015-10-21 14:36 +0100
    Re: the FORTH computer language David Hume <David.Hume@example.com> - 2015-10-22 09:38 +0100
      Re: the FORTH computer language "gareth" <no.spam@thank.you.invalid> - 2015-10-22 11:07 +0100
        Re: the FORTH computer language David Hume <David.Hume@example.com> - 2015-10-22 11:35 +0100
          Re: the FORTH computer language "gareth" <no.spam@thank.you.invalid> - 2015-10-22 12:26 +0100
            Re: the FORTH computer language "gareth" <no.spam@thank.you.invalid> - 2015-10-23 21:52 +0100
              Re: the FORTH computer language David Hume <David.Hume@example.com> - 2015-10-23 23:16 +0100
                Re: the FORTH computer language "gareth" <no.spam@thank.you.invalid> - 2015-10-24 00:21 +0100
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-24 13:23 +0000
                Re: the FORTH computer language Stan Barr <plan.b@bluesomatic.org> - 2015-10-24 15:25 +0000
                Re: the FORTH computer language Morten Reistad <first@last.name.invalid> - 2015-10-24 22:37 +0200
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-25 13:30 +0000
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-25 13:30 +0000
                Re: the FORTH computer language Stan Barr <plan.b@bluesomatic.org> - 2015-10-25 15:53 +0000
                Re: the FORTH computer language Stan Barr <plan.b@bluesomatic.org> - 2015-10-25 16:08 +0000
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-26 12:08 +0000
                Re: the FORTH computer language Stan Barr <plan.b@bluesomatic.org> - 2015-10-26 16:24 +0000
                Re: the FORTH computer language "gareth" <no.spam@thank.you.invalid> - 2015-10-24 16:26 +0100
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-25 13:30 +0000
                Re: the FORTH computer language "gareth" <no.spam@thank.you.invalid> - 2015-10-25 16:33 +0000
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-26 12:03 +0000
                Re: the FORTH computer language Quadibloc <jsavard@ecn.ab.ca> - 2015-10-26 06:49 -0700
                Re: the FORTH computer language Quadibloc <jsavard@ecn.ab.ca> - 2015-10-26 07:02 -0700
                Re: the FORTH computer language Quadibloc <jsavard@ecn.ab.ca> - 2015-10-26 07:18 -0700
                Re: the FORTH computer language Quadibloc <jsavard@ecn.ab.ca> - 2015-10-26 07:28 -0700
                Re: the FORTH computer language Quadibloc <jsavard@ecn.ab.ca> - 2015-10-26 07:39 -0700
                Re: the FORTH computer language pechter@S20.pechter.dyndns.org (William Pechter) - 2015-10-26 16:25 +0000
                Re: the FORTH computer language "Charles Richmond" <numerist@aquaporin4.com> - 2015-10-26 14:36 -0500
                Re: the FORTH computer language Michael Black <et472@ncf.ca> - 2015-10-26 17:41 -0400
                Re: the FORTH computer language "Charles Richmond" <numerist@aquaporin4.com> - 2015-10-27 15:26 -0500
                Re: the FORTH computer language Michael Black <et472@ncf.ca> - 2015-10-27 22:47 -0400
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-27 12:22 +0000
                Re: the FORTH computer language Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2015-10-27 09:03 -0600
                Re: the FORTH computer language "Charles Richmond" <numerist@aquaporin4.com> - 2015-10-27 15:38 -0500
                Re: the FORTH computer language Quadibloc <jsavard@ecn.ab.ca> - 2015-10-27 08:43 -0700
                Re: the FORTH computer language "Charles Richmond" <numerist@aquaporin4.com> - 2015-10-27 15:43 -0500
                Re: the FORTH computer language hankvc@blackhole.lostwells.org (Hank) - 2015-10-28 19:05 +0000
                Re: the FORTH computer language "78lp" <78lp@nospam.com> - 2015-10-28 16:08 +1100
                Re: the FORTH computer language Quadibloc <jsavard@ecn.ab.ca> - 2015-10-28 05:43 -0700
                Re: the FORTH computer language "Charles Richmond" <numerist@aquaporin4.com> - 2015-10-27 15:37 -0500
                Re: the FORTH computer language Lawrence Statton <lawrence@senguio.mx> - 2015-10-27 18:48 -0600
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-28 12:58 +0000
                Re: the FORTH computer language Lawrence Statton <lawrence@senguio.mx> - 2015-10-28 08:15 -0600
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-29 13:55 +0000
                Re: the FORTH computer language Lawrence Statton <lawrence@senguio.mx> - 2015-10-29 08:37 -0600
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-30 13:54 +0000
                Re: the FORTH computer language "Rod Speed" <rod.speed.aaa@gmail.com> - 2015-10-30 04:58 +1100
                Re: the FORTH computer language Lawrence Statton <lawrence@senguio.mx> - 2015-10-29 12:19 -0600
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-28 12:58 +0000
                Re: the FORTH computer language Quadibloc <jsavard@ecn.ab.ca> - 2015-10-28 11:08 -0700
                Re: the FORTH computer language "gareth" <no.spam@thank.you.invalid> - 2015-10-28 18:46 +0000
                Re: the FORTH computer language Michael Black <et472@ncf.ca> - 2015-10-28 17:58 -0400
                Re: the FORTH computer language David Hume <David.Hume@example.com> - 2015-10-28 22:04 +0000
                Re: the FORTH computer language "Charles Richmond" <numerist@aquaporin4.com> - 2015-10-28 17:39 -0500
                Re: the FORTH computer language Michael Black <et472@ncf.ca> - 2015-10-29 00:13 -0400
                Re: the FORTH computer language Lawrence Statton <lawrence@senguio.mx> - 2015-10-28 22:52 -0600
                Re: the FORTH computer language "78lp" <78lp@nospam.com> - 2015-10-29 15:54 +1100
                Re: the FORTH computer language Lawrence Statton <lawrence@senguio.mx> - 2015-10-28 16:47 -0600
                Re: the FORTH computer language Walter Bushell <proto@panix.com> - 2015-11-04 12:04 -0500
                Re: the FORTH computer language "Rod Speed" <rod.speed.aaa@gmail.com> - 2015-10-29 05:54 +1100
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-29 13:55 +0000
                Re: the FORTH computer language Quadibloc <jsavard@ecn.ab.ca> - 2015-10-29 07:21 -0700
                Re: the FORTH computer language Andrew Swallow <am.swallow@btinternet.com> - 2015-10-29 16:48 +0000
                Re: the FORTH computer language JimP <solosam90@gmail.com> - 2015-10-29 14:47 -0500
                Re: the FORTH computer language Quadibloc <jsavard@ecn.ab.ca> - 2015-10-29 15:09 -0700
                Re: the FORTH computer language Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2015-10-29 17:19 +0000
                Re: the FORTH computer language Greymaus <mausg@mail.com> - 2015-10-29 18:18 +0000
                Re: the FORTH computer language Ahem A Rivet's Shot <steveo@eircom.net> - 2015-10-29 18:02 +0000
                Re: the FORTH computer language Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2015-10-29 19:37 +0000
                Re: the FORTH computer language Lawrence Statton <lawrence@senguio.mx> - 2015-10-29 11:28 -0600
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-30 13:54 +0000
                Re: the FORTH computer language Lawrence Statton <lawrence@senguio.mx> - 2015-10-29 08:42 -0600
                Re: the FORTH computer language "gareth" <no.spam@thank.you.invalid> - 2015-10-29 14:49 +0000
                Re: the FORTH computer language Lawrence Statton <lawrence@senguio.mx> - 2015-10-29 08:57 -0600
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-30 13:54 +0000
                Re: the FORTH computer language Lawrence Statton <lawrence@senguio.mx> - 2015-10-30 08:39 -0600
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-31 13:22 +0000
                Re: the FORTH computer language Lawrence Statton <lawrence@senguio.mx> - 2015-10-31 09:36 -0600
                Re: the FORTH computer language Quadibloc <jsavard@ecn.ab.ca> - 2015-10-31 09:47 -0700
                Re: the FORTH computer language "Rod Speed" <rod.speed.aaa@gmail.com> - 2015-11-01 15:14 +1100
                Re: the FORTH computer language David Wade <dave.g4ugm@gmail.com> - 2015-11-01 16:38 +0000
                Re: the FORTH computer language "Rod Speed" <rod.speed.aaa@gmail.com> - 2015-11-02 12:58 +1100
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-11-02 13:17 +0000
                Re: the FORTH computer language "Osmium" <r124c4u102@comcast.net> - 2015-11-02 10:05 -0600
                Re: the FORTH computer language "Rod Speed" <rod.speed.aaa@gmail.com> - 2015-10-31 15:23 +1100
                Re: the FORTH computer language Lawrence Statton <lawrence@senguio.mx> - 2015-10-29 08:44 -0600
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-30 13:54 +0000
                Re: the FORTH computer language hancock4@bbs.cpcn.com - 2015-10-30 12:25 -0700
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-31 13:22 +0000
                Re: the FORTH computer language David Wade <dave.g4ugm@gmail.com> - 2015-11-01 16:32 +0000
                Re: the FORTH computer language "Osmium" <r124c4u102@comcast.net> - 2015-11-01 11:03 -0600
                Re: the FORTH computer language Michael Black <et472@ncf.ca> - 2015-11-01 12:48 -0500
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-11-02 13:17 +0000
                Re: the FORTH computer language "Rod Speed" <rod.speed.aaa@gmail.com> - 2015-11-03 07:16 +1100
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-11-03 12:55 +0000
                Re: the FORTH computer language "Rod Speed" <rod.speed.aaa@gmail.com> - 2015-11-04 08:07 +1100
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-11-04 13:52 +0000
                Re: the FORTH computer language "Rod Speed" <rod.speed.aaa@gmail.com> - 2015-11-05 08:52 +1100
                Re: the FORTH computer language Morten Reistad <first@last.name.invalid> - 2015-11-05 07:48 +0100
                Re: the FORTH computer language "Rod Speed" <rod.speed.aaa@gmail.com> - 2015-11-06 06:31 +1100
                Re: the FORTH computer language hancock4@bbs.cpcn.com - 2015-11-02 07:34 -0800
                Re: the FORTH computer language Quadibloc <jsavard@ecn.ab.ca> - 2015-11-01 23:55 -0800
                Re: the FORTH computer language hancock4@bbs.cpcn.com - 2015-11-02 07:40 -0800
                Re: the FORTH computer language "Charles Richmond" <numerist@aquaporin4.com> - 2015-11-02 14:59 -0600
                Re: the FORTH computer language "Rod Speed" <rod.speed.aaa@gmail.com> - 2015-10-30 05:08 +1100
                Re: the FORTH computer language Lawrence Statton <lawrence@senguio.mx> - 2015-10-28 13:15 -0600
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-29 13:55 +0000
                Re: the FORTH computer language Andrew Swallow <am.swallow@btinternet.com> - 2015-10-29 16:47 +0000
                Re: the FORTH computer language Quadibloc <jsavard@ecn.ab.ca> - 2015-10-29 07:29 -0700
                Re: the FORTH computer language "gareth" <no.spam@thank.you.invalid> - 2015-10-29 14:47 +0000
                Re: the FORTH computer language Lawrence Statton <lawrence@senguio.mx> - 2015-10-29 08:53 -0600
                Re: the FORTH computer language "Charles Richmond" <numerist@aquaporin4.com> - 2015-10-29 15:24 -0500
                Re: the FORTH computer language scott@slp53.sl.home (Scott Lurndal) - 2015-10-28 13:20 +0000
                Re: the FORTH computer language hankvc@blackhole.lostwells.org (Hank) - 2015-10-28 18:54 +0000
                Re: the FORTH computer language Quadibloc <jsavard@ecn.ab.ca> - 2015-10-28 12:47 -0700
                Re: the FORTH computer language Rich Alderson <news@alderson.users.panix.com> - 2015-10-28 15:46 -0400
                Re: the FORTH computer language Quadibloc <jsavard@ecn.ab.ca> - 2015-10-28 12:50 -0700
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-29 13:55 +0000
                Re: the FORTH computer language Lawrence Statton <lawrence@senguio.mx> - 2015-10-29 08:33 -0600
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-30 13:54 +0000
                Re: the FORTH computer language "Rod Speed" <rod.speed.aaa@gmail.com> - 2015-10-30 04:55 +1100
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-30 13:54 +0000
                Re: the FORTH computer language "Rod Speed" <rod.speed.aaa@gmail.com> - 2015-10-31 15:18 +1100
                Re: the FORTH computer language pechter@S20.pechter.dyndns.org (William Pechter) - 2015-10-29 19:34 +0000
                Re: the FORTH computer language Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2015-10-29 19:43 +0000
                Re: the FORTH computer language pechter@S20.pechter.dyndns.org (William Pechter) - 2015-10-29 20:04 +0000
                Re: the FORTH computer language hancock4@bbs.cpcn.com - 2015-10-29 13:28 -0700
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-30 13:54 +0000
                Re: the FORTH computer language pechter@S20.pechter.dyndns.org (William Pechter) - 2015-10-30 16:43 +0000
                Re: the FORTH computer language Rich Alderson <news@alderson.users.panix.com> - 2015-10-29 15:37 -0400
                Re: the FORTH computer language rpw3@rpw3.org (Rob Warnock) - 2015-11-03 06:56 +0000
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-29 13:55 +0000
                Re: the FORTH computer language Rich Alderson <news@alderson.users.panix.com> - 2015-10-29 15:47 -0400
                Re: the FORTH computer language Lawrence Statton <lawrence@senguio.mx> - 2015-10-29 14:14 -0600
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-30 13:54 +0000
                Re: the FORTH computer language Rich Alderson <news@alderson.users.panix.com> - 2015-10-30 20:50 -0400
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-30 13:54 +0000
                Re: the FORTH computer language "Rod Speed" <rod.speed.aaa@gmail.com> - 2015-10-28 16:05 +1100
                Re: the FORTH computer language Rich Alderson <news@alderson.users.panix.com> - 2015-10-28 15:52 -0400
                Re: the FORTH computer language "Rod Speed" <rod.speed.aaa@gmail.com> - 2015-10-29 12:29 +1100
                Re: the FORTH computer language Rich Alderson <news@alderson.users.panix.com> - 2015-10-29 15:51 -0400
                Re: the FORTH computer language Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2015-10-26 09:05 -0600
                Re: the FORTH computer language "Charles Richmond" <numerist@aquaporin4.com> - 2015-10-26 14:44 -0500
                Re: the FORTH computer language hancock4@bbs.cpcn.com - 2015-10-27 10:28 -0700
                Re: PDP-11, was the FORTH computer language John Levine <johnl@iecc.com> - 2015-10-26 17:19 +0000
                Re: PDP-11, was the FORTH computer language Rich Alderson <news@alderson.users.panix.com> - 2015-10-26 17:02 -0400
                Re: PDP-11, was the FORTH computer language pechter@S20.pechter.dyndns.org (William Pechter) - 2015-10-29 19:40 +0000
                Re: the FORTH computer language "Charles Richmond" <numerist@aquaporin4.com> - 2015-10-26 14:34 -0500
                Re: the FORTH computer language Huge <Huge@nowhere.much.invalid> - 2015-10-26 21:22 +0000
                Re: the FORTH computer language Morten Reistad <first@last.name.invalid> - 2015-10-27 07:00 +0100
                Re: the FORTH computer language timcaffrey420@gmail.com - 2015-10-27 10:15 -0700
                Re: the FORTH computer language scott@slp53.sl.home (Scott Lurndal) - 2015-10-27 20:09 +0000
                Re: the FORTH computer language "Rod Speed" <rod.speed.aaa@gmail.com> - 2015-10-27 06:42 +1100
                Re: the FORTH computer language Quadibloc <jsavard@ecn.ab.ca> - 2015-10-26 15:22 -0700
                Re: the FORTH computer language Quadibloc <jsavard@ecn.ab.ca> - 2015-10-26 15:23 -0700
                Re: the FORTH computer language Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2015-10-27 19:55 +0000
                Re: the FORTH computer language Michael Black <et472@ncf.ca> - 2015-10-27 16:09 -0400
                Re: the FORTH computer language Elliott Roper <nospam@yrl.co.uk> - 2015-10-25 19:31 +0000
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-26 12:03 +0000
                Re: the FORTH computer language scott@slp53.sl.home (Scott Lurndal) - 2015-10-26 13:10 +0000
                Re: the FORTH computer language "Rod Speed" <rod.speed.aaa@gmail.com> - 2015-10-27 06:45 +1100
                Re: the FORTH computer language Stan Barr <plan.b@bluesomatic.org> - 2015-10-24 07:03 +0000

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