21 Jun
2021
21 Jun
'21
8:20 p.m.
On 6/20/21 6:05 PM, Paul Ruizendaal via TUHS wrote:
I’ve read the MSc theses of Leffler and Shannon with
interest (https://www.tuhs.org/Archive/Documentation/Theses/) The thesis of Shannon has
an interesting discussion of a demand paged version of his Harris/6 Unix (Chapter 5). It
is based on the Tenex ideas, just as JFR mentioned for his version. The thesis of Leffler
contains a gant chart that shows that the demand paged version was written in the first
months of 1980 -- concurrently with or slightly after the 32V version.
Sam and Bill did their work at CWRU, which was getting to be a DEC shop at
the time, at least in the central computing center. When I got there a few
years later, we were running DEC-20s with TOPS-20, and we were doing some
kernel and EXEC customizations (we == Case, I was not involved). It's
likely that both of them, and Rob Gingell, were influenced by exposure to
Tenex and TOPS-20. Rob would know more.
Chet
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU chet(a)case.edu http://tiswww.cwru.edu/~chet/