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Message from discussion S/360 architecture, was PDP-10 system calls
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Findlay William  
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 More options Aug 28 2012, 2:46 pm
Newsgroups: comp.lang.pl1, alt.folklore.computers
From: Findlay William <yaldni...@blueyonder.co.uk>
Date: Tue, 28 Aug 2012 19:46:52 +0100
Local: Tues, Aug 28 2012 2:46 pm
Subject: Re: S/360 architecture, was PDP-10 system calls
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On 28/08/2012 04:14, in article
eaa6f3ca-01e5-452f-a431-76a6f971f...@j9g2000pbg.googlegroups.com, "Robin

Vowels" <robin.vow...@gmail.com> wrote:
> On Aug 28, 4:09 am, glen herrmannsfeldt <g...@ugcs.caltech.edu> wrote:
>> In comp.lang.pl1 John Levine <jo...@iecc.com> wrote:
>> (snip, someone wrote)

>>>> If that were the case, IBM would have sued RCA and others
>>>> for copying the S/360.
>>> On what grounds?  There's no legal protection for computer
>>> architecture or instruction sets.

>> When S/370 was new, there were stories about IBM having bought
>> the patent for virtual storage.

> Seems unlikely, as IBM claimed [erroneously] to have invented it.

They bought the paging patents that originated with the Ferranti Atlas, from
the UK NRDC to which they had been assigned (IIRC).  The 370 VM (not VM/370)
ads did not actually claim that IBM invented paging, but they strongly
implied it.  They were the cause of much hilarity in the UK.

{NRDC = National Research Development Corporation, a quango}

--
Bill Findlay
with blueyonder.co.uk;
use  surname & forename;


 
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