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Re: HA - Found a CP/M-86 image and C compiler for VBox

From Tauno Voipio <tauno.voipio@notused.fi.invalid>
Newsgroups comp.os.linux.misc
Subject Re: HA - Found a CP/M-86 image and C compiler for VBox
Date 2021-09-06 12:36 +0300
Organization A noiseless patient Spider
Message-ID <sh4nf2$2id$1@dont-email.me> (permalink)
References (14 earlier) <sm0lf4etehs.fsf@lakka.kapsi.fi> <uvydnTnAkP4o0qn8nZ2dnUU7-aXNnZ2d@earthlink.com> <sm0y28bryyv.fsf@lakka.kapsi.fi> <sh2r4n$il2$1@dont-email.me> <vvidnUqgWuAqA6j8nZ2dnUU7-U_NnZ2d@earthlink.com>

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On 6.9.2021 07:53 AM, SixOverFive wrote:
> 
> The Apollo computers used "rope memory" - HAND assembled.
> This was basically ferrite-core memory, but assembled
> on loose wires so you could pack it into a small space.
> There WERE better solutions in the late 60s ... so I
> suspect a pork-barrel project ... indeed I seem to
> remember they were made in Texas - LBJs state  :-)
> 

The rope memory was ROM. It used soft ferrite (transformer) cores.
A ferrite storage memory used square-loop (permanen magnet) cores.

There was as many cores as the memory bit width, each having a
secondary winding and a sense amplifier. The word lines were threaded
through a core for an one bit and around the core for a zero bit.
For reading, a word line was pulsed and the responses from the
bit lines stored to the data register. To save drivers, the word
lines were matrixed.

-- 

-TV

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Thread

HA - Found a CP/M-86 image and C compiler for VBox SixOverFive <hae274b.net> - 2021-08-26 00:34 -0400
  Re: HA - Found a CP/M-86 image and C compiler for VBox Eli the Bearded <*@eli.users.panix.com> - 2021-08-26 05:05 +0000
    Re: HA - Found a CP/M-86 image and C compiler for VBox SixOverFive <hae274b.net> - 2021-08-26 20:57 -0400
      Re: HA - Found a CP/M-86 image and C compiler for VBox The Natural Philosopher <tnp@invalid.invalid> - 2021-08-27 02:12 +0100
        Re: HA - Found a CP/M-86 image and C compiler for VBox SixOverFive <hae274c.net> - 2021-08-31 02:43 -0400
          Re: HA - Found a CP/M-86 image and C compiler for VBox The Natural Philosopher <tnp@invalid.invalid> - 2021-08-31 09:28 +0100
            Re: HA - Found a CP/M-86 image and C compiler for VBox SixOverFive <hae274c.net> - 2021-09-01 00:13 -0400
              Re: HA - Found a CP/M-86 image and C compiler for VBox The Natural Philosopher <tnp@invalid.invalid> - 2021-09-01 08:52 +0100
                Re: HA - Found a CP/M-86 image and C compiler for VBox SixOverFive <hae274c.net> - 2021-09-05 20:29 -0400
                Re: HA - Found a CP/M-86 image and C compiler for VBox The Natural Philosopher <tnp@invalid.invalid> - 2021-09-06 08:49 +0100
          Re: HA - Found a CP/M-86 image and C compiler for VBox Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2021-09-01 04:21 +0000
      Re: HA - Found a CP/M-86 image and C compiler for VBox jak <nospam@please.ty> - 2021-09-09 21:56 +0200
  Re: HA - Found a CP/M-86 image and C compiler for VBox The Natural Philosopher <tnp@invalid.invalid> - 2021-08-26 10:03 +0100
    Re: HA - Found a CP/M-86 image and C compiler for VBox SixOverFive <hae274b.net> - 2021-08-26 20:36 -0400
      Re: HA - Found a CP/M-86 image and C compiler for VBox The Natural Philosopher <tnp@invalid.invalid> - 2021-08-27 02:08 +0100
        Re: HA - Found a CP/M-86 image and C compiler for VBox SixOverFive <hae274c.net> - 2021-08-29 01:32 -0400
  Re: HA - Found a CP/M-86 image and C compiler for VBox Andreas Kohlbach <ank@spamfence.net> - 2021-08-26 12:26 -0400
    Re: HA - Found a CP/M-86 image and C compiler for VBox Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2021-08-26 19:49 +0300
      Re: HA - Found a CP/M-86 image and C compiler for VBox SixOverFive <hae274b.net> - 2021-08-26 21:06 -0400
        Re: HA - Found a CP/M-86 image and C compiler for VBox The Natural Philosopher <tnp@invalid.invalid> - 2021-08-27 02:58 +0100
          Re: HA - Found a CP/M-86 image and C compiler for VBox Andreas Kohlbach <ank@spamfence.net> - 2021-08-27 13:22 -0400
            Re: HA - Found a CP/M-86 image and C compiler for VBox Bobbie Sellers <bliss@mouse-potato.com> - 2021-08-27 11:26 -0700
              Re: HA - Found a CP/M-86 image and C compiler for VBox SixOverFive <hae274c.net> - 2021-08-28 01:22 -0400
                Re: HA - Found a CP/M-86 image and C compiler for VBox The Natural Philosopher <tnp@invalid.invalid> - 2021-08-28 09:53 +0100
                Re: HA - Found a CP/M-86 image and C compiler for VBox SixOverFive <hae274c.net> - 2021-08-29 02:08 -0400
                Re: HA - Found a CP/M-86 image and C compiler for VBox Andreas Kohlbach <ank@spamfence.net> - 2021-08-28 12:11 -0400
                Re: HA - Found a CP/M-86 image and C compiler for VBox SixOverFive <hae274c.net> - 2021-08-29 01:08 -0400
                Re: HA - Found a CP/M-86 image and C compiler for VBox Andreas Kohlbach <ank@spamfence.net> - 2021-08-29 04:01 -0400
                Re: HA - Found a CP/M-86 image and C compiler for VBox SixOverFive <hae274c.net> - 2021-08-29 23:32 -0400
                Re: HA - Found a CP/M-86 image and C compiler for VBox Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2021-08-30 00:51 +0000
                Re: HA - Found a CP/M-86 image and C compiler for VBox SixOverFive <hae274c.net> - 2021-08-30 00:06 -0400
                Re: HA - Found a CP/M-86 image and C compiler for VBox Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2021-08-30 14:03 +0000
                Re: HA - Found a CP/M-86 image and C compiler for VBox SixOverFive <hae274c.net> - 2021-08-31 01:25 -0400
                Re: HA - Found a CP/M-86 image and C compiler for VBox Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2021-09-01 04:21 +0000
                Re: HA - Found a CP/M-86 image and C compiler for VBox SixOverFive <hae274c.net> - 2021-09-04 01:37 -0400
            Re: HA - Found a CP/M-86 image and C compiler for VBox The Natural Philosopher <tnp@invalid.invalid> - 2021-08-28 09:40 +0100
              Re: HA - Found a CP/M-86 image and C compiler for VBox Andreas Kohlbach <ank@spamfence.net> - 2021-08-28 12:20 -0400
                Re: HA - Found a CP/M-86 image and C compiler for VBox Allodoxaphobia <trepidation@example.net> - 2021-08-29 00:55 +0000
                Re: HA - Found a CP/M-86 image and C compiler for VBox SixOverFive <hae274c.net> - 2021-08-31 01:58 -0400
                Re: HA - Found a CP/M-86 image and C compiler for VBox Andreas Kohlbach <ank@spamfence.net> - 2021-08-31 06:16 -0400
                Re: HA - Found a CP/M-86 image and C compiler for VBox SixOverFive <hae274c.net> - 2021-08-31 23:47 -0400
                Re: HA - Found a CP/M-86 image and C compiler for VBox Andreas Kohlbach <ank@spamfence.net> - 2021-09-01 07:52 -0400
                Re: HA - Found a CP/M-86 image and C compiler for VBox Roger Blake <rogblake@iname.invalid> - 2021-09-02 01:49 +0000
                Re: HA - Found a CP/M-86 image and C compiler for VBox pH <wNOSPAMp@gmail.org> - 2021-09-02 02:39 +0000
                Re: HA - Found a CP/M-86 image and C compiler for VBox SixOverFive <hae274c.net> - 2021-09-02 01:29 -0400
                Re: HA - Found a CP/M-86 image and C compiler for VBox SixOverFive <hae274c.net> - 2021-09-02 01:10 -0400
                Re: HA - Found a CP/M-86 image and C compiler for VBox Andreas Kohlbach <ank@spamfence.net> - 2021-09-02 14:51 -0400
                Re: HA - Found a CP/M-86 image and C compiler for VBox Bobbie Sellers <bliss@mouse-potato.com> - 2021-09-02 13:25 -0700
                Re: HA - Found a CP/M-86 image and C compiler for VBox Andreas Kohlbach <ank@spamfence.net> - 2021-09-02 21:24 -0400
                Re: HA - Found a CP/M-86 image and C compiler for VBox SixOverFive <hae274c.net> - 2021-09-03 03:38 -0400
                Re: HA - Found a CP/M-86 image and C compiler for VBox The Natural Philosopher <tnp@invalid.invalid> - 2021-09-03 09:14 +0100
                Re: HA - Found a CP/M-86 image and C compiler for VBox SixOverFive <hae274c.net> - 2021-09-04 01:01 -0400
                Re: HA - Found a CP/M-86 image and C compiler for VBox Andreas Kohlbach <ank@spamfence.net> - 2021-09-03 12:13 -0400
                Re: HA - Found a CP/M-86 image and C compiler for VBox SixOverFive <hae274c.net> - 2021-09-04 01:16 -0400
                Re: HA - Found a CP/M-86 image and C compiler for VBox SixOverFive <hae274c.net> - 2021-09-03 03:19 -0400
                Re: HA - Found a CP/M-86 image and C compiler for VBox scott@slp53.sl.home (Scott Lurndal) - 2021-09-03 14:00 +0000
                Re: HA - Found a CP/M-86 image and C compiler for VBox Ahem A Rivet's Shot <steveo@eircom.net> - 2021-09-03 17:44 +0100
                Re: HA - Found a CP/M-86 image and C compiler for VBox J. Clarke <jclarke.873638@gmail.com> - 2021-09-03 14:11 -0400
                Re: HA - Found a CP/M-86 image and C compiler for VBox Ahem A Rivet's Shot <steveo@eircom.net> - 2021-09-03 19:53 +0100
                Re: HA - Found a CP/M-86 image and C compiler for VBox Peter Flass <peter_flass@yahoo.com> - 2021-09-03 13:59 -0700
                Re: HA - Found a CP/M-86 image and C compiler for VBox J. Clarke <jclarke.873638@gmail.com> - 2021-09-03 20:18 -0400
                Re: HA - Found a CP/M-86 image and C compiler for VBox SixOverFive <hae274c.net> - 2021-09-05 02:14 -0400
                Re: HA - Found a CP/M-86 image and C compiler for VBox The Natural Philosopher <tnp@invalid.invalid> - 2021-09-05 09:47 +0100
                Re: HA - Found a CP/M-86 image and C compiler for VBox drb@ihatespam.msu.edu (Dennis Boone) - 2021-09-05 10:00 -0500
                Re: real programmers, was HA - Found a CP/M-86 image and C compiler for VBox John Levine <johnl@taugh.com> - 2021-09-05 22:16 +0000
                Re: HA - Found a CP/M-86 image and C compiler for VBox "David W. Hodgins" <dwhodgins@nomail.afraid.org> - 2021-09-05 12:05 -0400
                Re: fine old languages, HA - Found a CP/M-86 image and C compiler for VBox John Levine <johnl@taugh.com> - 2021-09-05 22:20 +0000
                Re: HA - Found a CP/M-86 image and C compiler for VBox SixOverFive <hae274c.net> - 2021-09-05 23:00 -0400
                Re: HA - Found a CP/M-86 image and C compiler for VBox Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2021-09-07 20:12 +0000
                Re: HA - Found a CP/M-86 image and C compiler for VBox Dan Espen <dan1espen@gmail.com> - 2021-09-07 16:27 -0400
                Re: HA - Found a CP/M-86 image and C compiler for VBox J. Clarke <jclarke.873638@gmail.com> - 2021-09-07 18:30 -0400
                Re: HA - Found a CP/M-86 image and C compiler for VBox Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2021-09-08 00:17 +0000
                Re: HA - Found a CP/M-86 image and C compiler for VBox The Natural Philosopher <tnp@invalid.invalid> - 2021-09-06 08:50 +0100
                Re: HA - Found a CP/M-86 image and C compiler for VBox "David W. Hodgins" <dwhodgins@nomail.afraid.org> - 2021-09-06 11:16 -0400
                Re: HA - Found a CP/M-86 image and C compiler for VBox Rich Alderson <news@alderson.users.panix.com> - 2021-09-06 15:04 -0400
                Re: HA - Found a CP/M-86 image and C compiler for VBox Jerry Peters <jerry@example.invalid> - 2021-09-09 02:04 +0000
                Re: HA - Found a CP/M-86 image and C compiler for VBox SixOverFive <hae274c.net> - 2021-09-05 01:40 -0400
                Re: HA - Found a CP/M-86 image and C compiler for VBox The Natural Philosopher <tnp@invalid.invalid> - 2021-09-05 09:38 +0100
                Re: HA - Found a CP/M-86 image and C compiler for VBox Ahem A Rivet's Shot <steveo@eircom.net> - 2021-09-05 10:49 +0100
                Re: HA - Found a CP/M-86 image and C compiler for VBox The Natural Philosopher <tnp@invalid.invalid> - 2021-09-05 11:22 +0100
                Re: HA - Found a CP/M-86 image and C compiler for VBox gareth evans <headstone255@yahoo.com> - 2021-09-05 11:31 +0100
                OT : Re: HA - Found a CP/M-86 image and C compiler for VBox gareth evans <headstone255@yahoo.com> - 2021-09-05 11:38 +0100
                Re: OT : Re: HA - Found a CP/M-86 image and C compiler for VBox The Natural Philosopher <tnp@invalid.invalid> - 2021-09-05 12:15 +0100
                Re: HA - Found a CP/M-86 image and C compiler for VBox Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2021-09-07 20:12 +0000
                Re: HA - Found a CP/M-86 image and C compiler for VBox Ahem A Rivet's Shot <steveo@eircom.net> - 2021-09-07 22:05 +0100
                Re: HA - Found a CP/M-86 image and C compiler for VBox Stéphane CARPENTIER <sc@fiat-linux.fr> - 2021-09-05 10:13 +0000
                Re: HA - Found a CP/M-86 image and C compiler for VBox J. Clarke <jclarke.873638@gmail.com> - 2021-09-05 09:50 -0400
                Re: HA - Found a CP/M-86 image and C compiler for VBox SixOverFive <hae274c.net> - 2021-09-05 20:18 -0400
                Re: HA - Found a CP/M-86 image and C compiler for VBox J. Clarke <jclarke.873638@gmail.com> - 2021-09-05 22:38 -0400
                Re: HA - Found a CP/M-86 image and C compiler for VBox Ahem A Rivet's Shot <steveo@eircom.net> - 2021-09-06 08:53 +0100
                Re: HA - Found a CP/M-86 image and C compiler for VBox Andreas Kohlbach <ank@spamfence.net> - 2021-09-05 12:22 -0400
                Re: HA - Found a CP/M-86 image and C compiler for VBox usenet@only.tnx (Questor) - 2021-09-03 19:34 +0000
                Re: HA - Found a CP/M-86 image and C compiler for VBox Andreas Kohlbach <ank@spamfence.net> - 2021-09-03 19:57 -0400
                Re: HA - Found a CP/M-86 image and C compiler for VBox Anssi Saari <as@sci.fi> - 2021-09-03 08:27 +0300
                Re: HA - Found a CP/M-86 image and C compiler for VBox SixOverFive <hae274c.net> - 2021-09-05 01:03 -0400
                Re: HA - Found a CP/M-86 image and C compiler for VBox Anssi Saari <as@sci.fi> - 2021-09-05 15:25 +0300
                Re: HA - Found a CP/M-86 image and C compiler for VBox The Natural Philosopher <tnp@invalid.invalid> - 2021-09-05 14:03 +0100
                Re: HA - Found a CP/M-86 image and C compiler for VBox Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2021-09-05 19:27 +0300
                Re: HA - Found a CP/M-86 image and C compiler for VBox SixOverFive <hae274c.net> - 2021-09-05 20:14 -0400
                Re: HA - Found a CP/M-86 image and C compiler for VBox SixOverFive <hae274c.net> - 2021-09-06 00:53 -0400
                Re: HA - Found a CP/M-86 image and C compiler for VBox The Natural Philosopher <tnp@invalid.invalid> - 2021-09-06 08:58 +0100
                Re: HA - Found a CP/M-86 image and C compiler for VBox Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2021-09-06 12:36 +0300
          Re: HA - Found a CP/M-86 image and C compiler for VBox SixOverFive <hae274c.net> - 2021-08-28 00:44 -0400
    Re: HA - Found a CP/M-86 image and C compiler for VBox The Natural Philosopher <tnp@invalid.invalid> - 2021-08-26 17:51 +0100
      Re: HA - Found a CP/M-86 image and C compiler for VBox SixOverFive <hae274c.net> - 2021-08-28 01:48 -0400
        Re: HA - Found a CP/M-86 image and C compiler for VBox The Natural Philosopher <tnp@invalid.invalid> - 2021-08-28 10:16 +0100
          Re: HA - Found a CP/M-86 image and C compiler for VBox SixOverFive <hae274c.net> - 2021-08-29 00:21 -0400
  Re: HA - Found a CP/M-86 image and C compiler for VBox Aragorn <thorongil@telenet.be> - 2021-08-26 19:53 +0200
    Re: HA - Found a CP/M-86 image and C compiler for VBox SixOverFive <hae274b.net> - 2021-08-26 20:33 -0400
  Re: HA - Found a CP/M-86 image and C compiler for VBox Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2021-08-27 02:01 +0000
    Re: HA - Found a CP/M-86 image and C compiler for VBox The Natural Philosopher <tnp@invalid.invalid> - 2021-08-27 04:40 +0100
    Re: HA - Found a CP/M-86 image and C compiler for VBox SixOverFive <hae274c.net> - 2021-09-02 00:15 -0400
      Re: HA - Found a CP/M-86 image and C compiler for VBox Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2021-09-02 06:02 +0000
        Re: HA - Found a CP/M-86 image and C compiler for VBox SixOverFive <hae274c.net> - 2021-09-03 02:37 -0400

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