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Groups > alt.folklore.computers > #162769
| From | Bob Eager <news0006@eager.cx> |
|---|---|
| Newsgroups | alt.folklore.computers |
| Subject | Re: Updates and Corrections for 24-bit Computers |
| Date | 2016-04-20 20:29 +0000 |
| Message-ID | <dnq74dFgvtbU2@mid.individual.net> (permalink) |
| References | <5c0766ac-76f6-4a58-bb91-50e2fcf8f5e3@googlegroups.com> |
On Wed, 20 Apr 2016 12:33:37 -0700, Quadibloc wrote: > On my page at > > http://www.quadibloc.com/comp/cp0303.htm > > I expanded the diagram of instruction formats for 24-bit computers to > show the format of shift instructions for several of them, and several > other instruction formats for the Harris/Datacraft computers. > > Also, instead of just putting the 24-bit components of 48-bit and 72-bit > instructions slightly closer together, I've made it clearer which > instruction formats involve multi-word instructions by widening the > diagram. > > As well, I corrected an erroneous statement to the effect that the SEL > 840 used sign-magnitude notation; it was in fact a two's complement > machine. A small point or three: 1) It was "International Computers Limited" (not "Computing) 2) In any case, ICL was a government-mandated merger between British computer companies of the time. It would be more sensible to attribute the ICL 1900 to its designer (and marketer for most of its life). That was ICT (International Computers and Tabulators) 3) This omits the Elliott (later ICL!) 4100 series. I probably have that stuff somewhere. -- Using UNIX since v6 (1975)... Use the BIG mirror service in the UK: http://www.mirrorservice.org
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Updates and Corrections for 24-bit Computers Quadibloc <jsavard@ecn.ab.ca> - 2016-04-20 12:33 -0700
Re: Updates and Corrections for 24-bit Computers Jon Elson <jmelson@wustl.edu> - 2016-04-20 15:23 -0500
Re: Updates and Corrections for 24-bit Computers Quadibloc <jsavard@ecn.ab.ca> - 2016-04-20 13:44 -0700
Re: Updates and Corrections for 24-bit Computers Jon Elson <jmelson@wustl.edu> - 2016-04-20 17:22 -0500
Re: Updates and Corrections for 24-bit Computers Jon Elson <jmelson@wustl.edu> - 2016-04-21 14:06 -0500
Re: Updates and Corrections for 24-bit Computers tracymnelson@gmail.com - 2016-04-22 08:43 -0700
Re: Updates and Corrections for 24-bit Computers Jon Elson <elson@pico-systems.com> - 2016-04-22 11:01 -0500
Re: Updates and Corrections for 24-bit Computers tracymnelson@gmail.com - 2016-04-22 09:25 -0700
Re: Updates and Corrections for 24-bit Computers "J. Clarke" <j.clarke.873638@gmail.com> - 2016-04-22 23:19 -0400
Re: Updates and Corrections for 24-bit Computers Al Kossow <aek@bitsavers.org> - 2016-04-21 19:58 -0700
Re: Updates and Corrections for 24-bit Computers Jon Elson <elson@pico-systems.com> - 2016-04-22 11:11 -0500
Re: Updates and Corrections for 24-bit Computers Bob Eager <news0006@eager.cx> - 2016-04-20 20:29 +0000
Re: Updates and Corrections for 24-bit Computers Quadibloc <jsavard@ecn.ab.ca> - 2016-04-20 13:45 -0700
Re: Updates and Corrections for 24-bit Computers Quadibloc <jsavard@ecn.ab.ca> - 2016-04-20 16:16 -0700
Re: Updates and Corrections for 24-bit Computers Bob Eager <news0006@eager.cx> - 2016-04-21 07:40 +0000
Re: Updates and Corrections for 24-bit Computers Bob Eager <news0006@eager.cx> - 2016-04-21 07:48 +0000
Re: Updates and Corrections for 24-bit Computers Quadibloc <jsavard@ecn.ab.ca> - 2016-04-20 18:54 -0700
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