Difference between revisions of "SDS 940"

Latest revision as of 09:52, 21 July 2025

The SDS 940 (renamed to XDS 940 after SDS was purchased by Xerox and renamed 'XDS') was effectively an SDS 930 mainframe upgraded with memory management hardware (including virtual memory) to allow it to be used for time-sharing, using a derivative of the Berkeley Timesharing System.

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SDS 940 - documentation at Bitsavers
- SDS 940 Theory of Operation - technical manual
- SDS 9xx - programs
Modifications to the SDS 930 Computer for the Implementation of Time-Sharing
940 Introduction
SDS 940 - documents from Tymshare
- SDS 940 Lectures - Butler W. Lampson covers, along with much else, the modifications to the 930

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 ==External links==
-* [http://bitsavers.org/pdf/sds/9xx/940/ucbProjectGenie/mcjones/20.10.10.pdf Modifications to the SDS 930 Computer for the Implementation of Time-Sharing]
 * [http://www.bitsavers.org/pdf/sds/9xx/940/ SDS 940] - documentation at Bitsavers
 ** [http://www.bitsavers.org/pdf/sds/9xx/940/980126A_940_TheoryOfOperation_Mar67.pdf SDS 940 Theory of Operation] - technical manual
 ** [http://www.bitsavers.org/bits/SDS/9xx/ SDS 9xx] - programs
+* [http://bitsavers.org/pdf/sds/9xx/940/ucbProjectGenie/mcjones/20.10.10.pdf Modifications to the SDS 930 Computer for the Implementation of Time-Sharing]
 * [https://github.com/larsbrinkhoff/bcc-500/blob/master/text/SYSTEM-10%3A%20(DOCUMENTATION)/INTRO-940 940 Introduction]
 * [http://www.bitsavers.org/pdf/tymshare/SDS_940/ SDS 940] - documents from Tymshare