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Re: Need to construct the logical reverse of a 7448 - perhaps using a GAL

Newsgroups sci.electronics.design
Subject Re: Need to construct the logical reverse of a 7448 - perhaps using a GAL
References <FpWdnYuq0ujJaSbGnZ2dnUU7-I_NnZ2d@giganews.com> <g23kuhFsmo5U1@mid.individual.net> <1484dca3-a816-4637-9a2d-c0944f7e18ae@googlegroups.com> <Z6adnSF0oIWjUSHGnZ2dnUU7-SfNnZ2d@giganews.com>
From dplatt@coop.radagast.org (Dave Platt)
Message-ID <eb6v8f-mh5.ln1@coop.radagast.org> (permalink)
Date 2018-10-09 10:50 -0700

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In article <Z6adnSF0oIWjUSHGnZ2dnUU7-SfNnZ2d@giganews.com>,
John Robertson  <spam@flippers.com> wrote:

>This is for very slow logic - a few hertz - so settling time is not an 
>issue.

At those speeds, and at that amount of capacity, any jellybean
microcontroller with enough I/O pins and an onboard oscillator ought
to do the job.  Read port A, mask off top bit, indexed read to a
table, write the resulting bits to port B.  Lather, rinse, repeat.

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Need to construct the logical reverse of a 7448 - perhaps using a GAL John Robertson <spam@flippers.com> - 2018-10-08 17:20 -0700
  Re: Need to construct the logical reverse of a 7448 - perhaps using a GAL Jeff Liebermann <jeffl@cruzio.com> - 2018-10-08 18:57 -0700
    Re: Need to construct the logical reverse of a 7448 - perhaps using a GAL John Robertson <spam@flippers.com> - 2018-10-08 19:08 -0700
    Re: Need to construct the logical reverse of a 7448 - perhaps using a GAL John Robertson <spam@flippers.com> - 2018-10-08 19:13 -0700
      Re: Need to construct the logical reverse of a 7448 - perhaps using a GAL John Robertson <spam@flippers.com> - 2018-10-08 19:27 -0700
        Re: Need to construct the logical reverse of a 7448 - perhaps using a GAL Jeff Liebermann <jeffl@cruzio.com> - 2018-10-08 21:06 -0700
          Re: Need to construct the logical reverse of a 7448 - perhaps using a GAL Jeff Liebermann <jeffl@cruzio.com> - 2018-10-08 21:36 -0700
    Re: Need to construct the logical reverse of a 7448 - perhaps using a GAL gnuarm.deletethisbit@gmail.com - 2018-10-08 20:27 -0700
      Re: Need to construct the logical reverse of a 7448 - perhaps using a GAL John Robertson <spam@flippers.com> - 2018-10-08 21:19 -0700
        Re: Need to construct the logical reverse of a 7448 - perhaps using a GAL Jeff Liebermann <jeffl@cruzio.com> - 2018-10-08 21:40 -0700
          Re: Need to construct the logical reverse of a 7448 - perhaps using a GAL John Robertson <spam@flippers.com> - 2018-10-09 00:20 -0700
            Re: Need to construct the logical reverse of a 7448 - perhaps using a GAL gnuarm.deletethisbit@gmail.com - 2018-10-10 15:43 -0700
              Re: Need to construct the logical reverse of a 7448 - perhaps using a GAL John Robertson <spam@flippers.com> - 2018-10-10 18:46 -0700
        Re: Need to construct the logical reverse of a 7448 - perhaps using a GAL gnuarm.deletethisbit@gmail.com - 2018-10-08 22:11 -0700
          Re: Need to construct the logical reverse of a 7448 - perhaps using a GAL John Robertson <spam@flippers.com> - 2018-10-09 00:27 -0700
    Re: Need to construct the logical reverse of a 7448 - perhaps using a GAL Rob <nomail@example.com> - 2018-10-09 17:08 +0000
  Re: Need to construct the logical reverse of a 7448 - perhaps using a GAL "tom" <tmiller11147@verizon.net> - 2018-10-09 00:15 -0400
    Re: Need to construct the logical reverse of a 7448 - perhaps using a GAL John Robertson <spam@flippers.com> - 2018-10-09 00:26 -0700
      Re: Need to construct the logical reverse of a 7448 - perhaps using a GAL Gerhard Hoffmann <ghf@hoffmann-hochfrequenz.de> - 2018-10-09 14:23 +0200
        Re: Need to construct the logical reverse of a 7448 - perhaps using a GAL jrwalliker@gmail.com - 2018-10-09 06:43 -0700
          Re: Need to construct the logical reverse of a 7448 - perhaps using a GAL John Robertson <spam@flippers.com> - 2018-10-09 08:41 -0700
            Re: Need to construct the logical reverse of a 7448 - perhaps using a GAL dplatt@coop.radagast.org (Dave Platt) - 2018-10-09 10:50 -0700
      Re: Need to construct the logical reverse of a 7448 - perhaps using a GAL Jeff Liebermann <jeffl@cruzio.com> - 2018-10-09 09:15 -0700
        Re: Need to construct the logical reverse of a 7448 - perhaps using a GAL John Robertson <spam@flippers.com> - 2018-10-09 10:01 -0700
          Re: Need to construct the logical reverse of a 7448 - perhaps using a GAL Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2018-10-09 21:01 +0300
            Re: Need to construct the logical reverse of a 7448 - perhaps using a GAL John Robertson <spam@flippers.com> - 2018-10-09 11:13 -0700
              Re: Need to construct the logical reverse of a 7448 - perhaps using a GAL bitrex <user@example.net> - 2018-10-09 18:35 -0400
                Re: Need to construct the logical reverse of a 7448 - perhaps using a GAL TTman <kraken.sankey@gmail.com> - 2018-10-09 23:43 +0100
                Re: Need to construct the logical reverse of a 7448 - perhaps using a GAL bitrex <user@example.net> - 2018-10-09 19:49 -0400
                Re: Need to construct the logical reverse of a 7448 - perhaps using a GAL bitrex <user@example.net> - 2018-10-09 19:50 -0400
          Re: Need to construct the logical reverse of a 7448 - perhaps using a GAL Jeff Liebermann <jeffl@cruzio.com> - 2018-10-09 17:25 -0700
            Re: Need to construct the logical reverse of a 7448 - perhaps using a GAL John Robertson <spam@flippers.com> - 2018-10-09 19:15 -0700
          Re: Need to construct the logical reverse of a 7448 - perhaps using a GAL gnuarm.deletethisbit@gmail.com - 2018-10-10 16:46 -0700
            Re: Need to construct the logical reverse of a 7448 - perhaps using a GAL Gerhard Hoffmann <ghf@hoffmann-hochfrequenz.de> - 2018-10-11 02:08 +0200
              Re: Need to construct the logical reverse of a 7448 - perhaps using a GAL gnuarm.deletethisbit@gmail.com - 2018-10-10 18:37 -0700
                Re: Need to construct the logical reverse of a 7448 - perhaps using a GAL Gerhard Hoffmann <ghf@hoffmann-hochfrequenz.de> - 2018-10-11 13:35 +0200
      Re: Need to construct the logical reverse of a 7448 - perhaps using a GAL gnuarm.deletethisbit@gmail.com - 2018-10-10 15:45 -0700
        Re: Need to construct the logical reverse of a 7448 - perhaps using a GAL John Robertson <spam@flippers.com> - 2018-10-10 18:50 -0700
          Re: Need to construct the logical reverse of a 7448 - perhaps using a GAL Jasen Betts <jasen@xnet.co.nz> - 2018-10-11 05:39 +0000
  Re: Need to construct the logical reverse of a 7448 - perhaps using a GAL bitrex <user@example.net> - 2018-10-09 02:18 -0400
  Re: Need to construct the logical reverse of a 7448 - perhaps using a GAL TTman <kraken.sankey@gmail.com> - 2018-10-09 17:51 +0100
    Re: Need to construct the logical reverse of a 7448 - perhaps using a GAL bitrex <user@example.net> - 2018-10-09 17:38 -0400
  Re: Need to construct the logical reverse of a 7448 - perhaps using a GAL John Larkin <jjlarkin@highland_snip_technology.com> - 2018-10-09 17:52 -0700
    Re: Need to construct the logical reverse of a 7448 - perhaps using a GAL John Robertson <spam@flippers.com> - 2018-10-09 19:16 -0700
    Re: Need to construct the logical reverse of a 7448 - perhaps using a GAL bitrex <user@example.net> - 2018-10-09 22:48 -0400

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