Multics 1112 pages
29 Jul 2020

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Home Page. Multics site home page 27K 04/22/20
Multics History. Narrative history of Multics. 113K 06/03/20
Features. Features of Multics 83K 11/28/19
DPS 8M Instruction Set. Meaning of instruction set mnemonics 46K 07/24/19
6180 opcodes - normal. Operation Code Map (bit 27 = 0) 3K 11/08/12
6180 opcodes - EIS. Operation Code Map (bit 27 = 1) 2K 11/08/12
AL39 Multics Processor Manual. 1.5MB PDF 1505K 11/08/12
Myths. Incorrect statements about Multics found on the web. 72K 05/04/20
Project MAC. History of MIT Project MAC. 79K 03/27/20
Dates. List of Multics related events in time order. 68K 12/06/19
Glossary Index. Dictionary of Multics terms, concepts, and jargon. 95K 07/29/20
Glossary - A 99K 07/29/20
Glossary - B 45K 07/29/20
Glossary - C 81K 07/29/20
Glossary - D 61K 07/29/20
Glossary - E 46K 07/29/20
Glossary - F 42K 07/29/20
Glossary - G 25K 07/29/20
Glossary - H 25K 07/29/20
Glossary - I 52K 07/29/20
Glossary - J 16K 07/29/20
Glossary - K 21K 07/29/20
Glossary - L 42K 07/29/20
Glossary - M 78K 07/29/20
Glossary - N 28K 07/29/20
Glossary - O 22K 07/29/20
Glossary - P 87K 07/29/20
Glossary - Q 21K 07/29/20
Glossary - R 54K 07/29/20
Glossary - S 81K 07/29/20
Glossary - T 53K 07/29/20
Glossary - U 31K 07/29/20
Glossary - V 29K 07/29/20
Glossary - W 20K 07/29/20
Glossary - X 18K 07/29/20
Glossary - Y 14K 07/29/20
Glossary - Z 18K 07/29/20
The Multics History Project. Project to preserve historical artifacts about the Multics operating system. 18K 03/24/19
History Project Wish List. Material we'd like to find for the Multics History Project. 17K 07/01/18
Letter From Corby. On the occasion of the shutdown of the last Multics system. 13K 01/24/13
Multicians. List of contributors to Multics. 593K 07/26/20
Multicians Registration. Signup form 19K 05/14/20 Information on mail addresses in the domain. 22K 10/30/19
Stories. Anecdotes and war stories about Multics. 66K 06/09/20
Pictures of the MIT 6180. Publicity pictures from 1973 15K 07/04/17
GE-645 Circuit Board. Actual board from the BTL GE-645. 14K 07/04/17
It Can Be Done. Writing bug-free software. 15K 06/10/17
Shangri-La and the Paris 645. The 1970 "merger" and an early software factory. 17K 07/31/19
ST. JOHN'S HOSTS MULTICS. Honeywell internal newsletter from 1981. 8K 04/22/20
Origin of the Cookie Monster. A legendary Multics hack. 16K 08/26/17
Corby. Homage to our leader, Fernando J. Corbató 38K 03/11/20
Memorial Gathering for Corby. MIT, November 4, 2019 47K 04/22/20
Memorial Gathering for Corby. Program, November 4, 2019 389K corby-memorial.pdf not found
The Spirit of Multics. Remark by Don Wagner. 12K 07/04/17
Installing the GE-645 in Paris. Story by Dave Vinograd. 17K 07/04/17
Teaching Multics in Tokyo. Story by Dave Vinograd. 19K 07/06/17
The Developer's Wail. Story by Dave Vinograd. 13K 10/06/16
MacLisp at ENWGS. Story by Robert Matern. 15K 06/08/17
Multics Humor at ENWGS. Jokes about ENWGS 18K 10/06/16
Organick's Book. How to order Organick's book from MIT Press 18K 11/12/19
Operational Statistics, 1969. Charts from the early days of Multics service at MIT. 14K 07/04/17
Honeywell Management. Inside story of Honeywell politics. 23K 09/16/19
Hodie Natus Est Radici Frater. A 1976 error message in Latin. 23K 07/06/17
How Many Users?. CTSS load and Multics performance in the 1960s. 17K 01/19/18
Summer 1977: I was a Multics Intern. Dream summer vacation in .. Phoenix. 8K 10/07/16
Project MAC 25th Anniversary. 1988 Project MAC reunion at MIT. 20K 07/24/19
Project MAC 35th Anniversary. 1999 Project MAC reunion 30K 06/26/20
CISL Farewell. Group photo of the CISL group taken in 1985. 15K 07/04/17
USGS-M Recollections. Using Multics in Menlo Park. 19K 06/10/12
Alan Sawyer's Multics Bio. Bell Canada applications conversion. 19K 09/08/11
Julie Jackson's Multics Bio. What Julie worked on. 21K 10/24/19
"You Had To Go To Radio Shack?". Demonstrating the Cray Station to Ford. 20K 09/01/14
Lee Scheffler's Multics Bio. What Lee worked on at Project MAC. 15K 09/01/14
Marketing Multics in the Midwest. Selling Multics in Iowa in a snowstorm. 15K 09/01/14
Short Operator. The true short operator story. 14K 03/14/11
The Magic Finger. Helping the University of Calgary tune its Multics. 16K 03/14/11
Low Bottle Pressure. Famous drum crashes in the 1960s. 21K 11/27/19
The 645 Chip. 1984 plan to put a 645 on a chip. 13K 10/06/16
Message Coordinator. Lessons from early development. 17K 07/04/17
Cryptic Messages from Antiquity. PL/I error messages remembered. 16K 03/13/11
Multics SNOBOL. Multics SNOBOL and the Missing END Statement. 16K 09/01/14
Multo ante natus eram. A date-related crash in 1995. 17K 09/01/14
INRIA Machine Room. The machine room at INRIA, Rocquencourt, France, in October 1991. 13K 07/04/17
Visiting Project MAC. Photo from Oda-san's 1973 visit to Cambridge. 12K 07/24/19
The Palyn Report. Marketing politics. 24K 09/08/19
Phase One. The first words of Multics. 22K 02/08/18
Picnics. Good times in the summer. 40K 06/10/20
An Obfuscated PL/I Program. Try to guess what this PL/I program does. 14K 07/24/19
Multics REDUCE. Symbolic algebra and particle physics by Rainer Schöpf. 16K 07/24/19
Multics Reunion and Dinner, June 2004. Events honoring Corby on 19 June 2004. 26K 08/07/19
2004 Multics Reunion Attendance 6K 11/08/12
Corbató Fellowship. Graduate Fellowship honoring Corby. 13K 07/24/19
2012 Multics Reunion . Informal gathering of Multicians in June 2012 18K 05/21/20
645 System: Artist's Conception. A painting of the future GE-645. 14K 07/04/17
Visiting CISL. Training the flying squad. 17K 10/24/19
Snow Joke. A message in the snow. 13K 05/11/20
Marketing Item. Teaching salesmen to consider Multics. 13K 07/04/17
Industrial Nucleonics and DCC. 1970s marketing successes. 14K 09/01/14
Marketing Successes. 1970s newsletter articles. 15K 08/07/18
Publicity Photos. More 1970s news articles. 14K 07/04/17
Honeywell User News. The first Multics sale in Europe and more. 13K 07/24/19
Installing USL. Crayfish and hurricanes. 14K 03/08/17
Flower. A never shipped Multics CPU. 17K 06/02/20
Using Ring 5. Protecting a source control database. 14K 05/11/20
Security. How the Air Force broke Multics security. 26K 12/02/17
The Origin of the Shell. RUNCOM and its progeny. 17K 06/27/17
Tech Square. Where we worked 29K 07/24/19
Telefunken TR440. Interesting German machine. 14K 02/15/17
Timing Channels. Covert channels and the star property. 19K 04/20/20
The Louisiana State Trooper Story. Another marketing legend. 16K 09/01/14
THVV Multics Bio. What Tom worked on. 27K 07/24/19
Unix and Multics. Our famous child. 26K 09/05/19
Benchmarks. Stories of benchmark tests done to sell Multics. 41K 07/24/19
The FJCC Papers. How the FJCC papers were written. 18K 07/24/17
The User Ring Newsletter. Newsletter for HLSUA Multics users, June 1986. 14K 04/22/20
Ring Zero and the Null Pointers. CNO Multicians who played rock and roll. 13K 07/24/19
Early days of Multics and Performance. Early days of Multics and rusty analysis on Performance Improvement. 24K 07/24/19
Project MAC 50th Anniversary. 2014 Project MAC and Multics reunion 36K 06/20/20
Project MAC Recollections. One graduate student's recollections. 26K 12/29/18
Multics Panel at ACSAC 30. Multics security Panel, December 2014 23K 10/03/19
Honeywell Brain Damage. SIPB response to iox_ 17K 07/24/19
The foobar bug. A GE-645 DoS hardware bug that was never fixed. 23K 07/24/19
Tapes for Phoenix. The GIOC bug that was never fixed. 30K 07/24/19
My Introduction to Multics. How I got started with Multics. 14K 03/30/16
NWGS Stories. Stories from the development of the NWGS code at Moorestown NJ. 24K 07/24/19
ASEA Stories. Personal stories from working at ASEA in Sweden. 15K 10/06/16
The CISL Wake. 28 photos from the CISL Wake held in May 1986. 20K 07/24/19
Paul Green Multics Collection. Multics PL/I demo programs by several authors, and writings by Paul Green. 15K 08/07/19
Barry Wolman Multics Collection. Multics PL/I demo programs by Barry Wolman. 15K 08/07/19
John Potts Multics Bio. Working at Bell Canada and DND-H. 13K 10/25/19
Multics in Phoenix. Development and support in Phoenix. 96K 04/18/20
Pictures of Multicians. Galleries of people. 61K 06/27/20
Humor. Jokes about Multics. 36K 08/07/18
Memorabilia. Trinkets, T-shirts, and Ties. 32K 07/24/19
Bibliography. Papers, books, memos, and manuals related to Multics 460K 07/26/20
Papers Online. Classic papers about Multics available on the Web. 31K 11/12/19
Introduction and Overview of the Multics System. Classic 1965 paper introducing Multics 59K 07/04/17
System Design of a Computer for Time Sharing Applications. Classic 1965 paper introducing Multics 30K 08/12/16
Structure of the Multics Supervisor. Classic 1965 paper introducing Multics supervisor design 49K 08/12/16
A General-Purpose File System For Secondary Storage. Classic 1965 paper introducing Multics file system 72K 07/04/17
Communications and Input/Output Switching in a Multiplex Computing System. Classic 1965 paper introducing Multics I/O system 44K 07/04/17
Some Thoughts About the Social Implications of Accessible Computing. Classic 1965 paper introducing Multics 24K 08/12/16
A brief description of privacy measures in the Multics operating system. Security in the Multics operating system. AFIPS SJCC, 1967 9K 08/31/08
Protection in an information processing utility. 1968 description of Multics protection mechanism. 434K 11/08/12
Virtual memory, processes, and sharing in Multics. 1968 paper on processes, linkage, stack, call 39K 07/04/17
Sensitive issues in the design of multi-use systems. 1968 paper on OS design 272K 12/06/16
Some Considerations of Supervisor Program Design for Multiplexed Computer Systems. 1968 paper on OS design 71K 11/08/12
A Paging Experiment with the Multics System. 1969 paper on paging 284K 01/24/16
The Multics Virtual Memory: Concepts and Design. 1969 paper on virtual memory 63K 07/24/19
The Role of Motherhood in the Pop Art of System Programming. 1969 paper on system programming 29K 07/24/19
The Multics PL/1 Compiler. 1969 paper on PL/I compiler implementation 54K 07/24/19
Program naming problems in a shared tree-structured hierarchy. 1969 paper on search rules. 233K 12/06/16
The Instrumentation of Multics. 1969 paper on Multics instrumentation 38K 02/18/14
Remote Terminal Character Stream Processing in Multics. 1970 paper on termimal I/O 93K 11/08/12
Technical and Human Engineering Problems in Connecting Terminals to a Time-Sharing System. 1970 paper on terminal I/O 829K 11/08/12
Some Observations about Decentralization of File Systems. 1971 paper on file system design 40K 11/08/12
A Hardware Architecture for Implementing Protection Rings. 1971 paper on rings 75K 09/08/11
The Multics Input/Output System. 1971 paper on I/O system 46K 07/24/19
Multics--The first seven years. 1972 78K 12/09/17
A simple linear model of demand paging performance. 1972 paper on working sets 338K 11/08/12
MOO in Multics. 1972 paper on games in Multics 53K 03/21/17
Protection and the Control of Information Sharing in Multics. 1974 paper on security 485K 01/24/16
Ongoing Research and Development in Information Protection. 1974 paper on security 620K 01/24/16
Automated Merging of Software Modifications. 1977 paper on merge_ascii 30K 07/24/19
A Managerial View of the Multics System Development. 1977 paper on Multics project experience 60K 08/14/14
The Multics MACLISP Compiler: The Basic Hackery -- a Tutorial. 1977 paper on LISP compiler 142K 02/18/14
footnotes for The Multics MACLISP Compiler: The Basic Hackery. Footnotes 18K 10/27/18
The Multics System Programming Process. 1978 paper on Multics process 23K 07/24/19
Multics Emacs: The History, Design and Implementation. 1979 Mother of All Emacs Papers 155K 07/05/15
Experiences With an Interactive Electronic Meeting Facility. 1983 paper on forum 27K 03/14/11
Multics Through the Looking Glass. 1980 HLSUA paper on tuning Calgary 66K 10/27/18
footnotes for Multics Through the Looking Glass. Footnotes 4K 10/27/18
Implementing Forth for the Multics operating system. paper at the 1985 Rochester Forth Conference 1971K 08/11/15
The Multics Device Utility Package. BTL Repository doc B0100 97K 07/17/18
Project MAC Progress Report X. 1972-1973 6672K 07/25/18
Articles. Technical articles about Multics. 18K 03/27/16
Multics Data Security. Security controls in Multics. Published in Scientific Honeyweller (Vol. 2 No. 2) and as Honeywell doc GA01. 50K 07/24/19
Observations about Software Maintenance. A talk to the Ada SIG by Paul Stachour about the Multics Way. 35K 07/24/19
Multics History. PDF slides from John Gintell's lecture on Multics History to the ACM Greater Boston Chapter. Also available on YouTube. 94K 05/09/14
Multics Virtual Memory - Tutorial and Reflections. Summary of the Multics virtual memory design. 67K 08/26/17
The New Storage System. 1975 project to replace the file storage system. 32K 07/24/19
Printer Software. Printers, listings, and crash dumps. 28K 07/24/19
Home Terminals. Forty years of logging in from home. 31K 07/31/19
The who command. The Multics who command. 21K 07/05/17
Multics Leap Year Calculations. Y2K was anticipated as early as 1966. 14K 11/19/12
Priority Scheduling. HLSUA Presentation, Forum XXV. 173K 01/24/16
"And They Argued All Night...". The history of the Internet. An article for Matrix News. 39K 04/20/20
Multics Library Processes and Tools. How Multics source and object libraries were managed. 23K 02/14/13
Record Stocks and the Physical Volume Scavenger. Record Stocks in Multics. Pages are allocated to segments so crash recovery is safe and fast. 28K 09/01/14
Multics and Hyperchannel. A project at ASEA to connect Multics to Modcomp computers via Hyperchannel. 15K 09/01/14
Multics Bootstrap Loading. The evolution of Multics bootstrap loading and BOS. 49K 07/24/19
TMG. The language used to build EPL. 23K 03/14/11
Version I PL/I Timeline. Development history of Multics Version 1 PL/I compiler. 19K 07/24/19
TBL - Table Building Language. Internal details of the Multics PL/I compiler. 9K 03/14/11
Final Evaluation Report of Honeywell Multics MR 11.0. 36 MB PDF. 6204K 04/30/15
The B2 Final Evaluation Report. Report on NSA Evaluation of Multics security. 16K 08/07/18
The Multics Scheduler. Three generations of Multics scheduling algorithms. 37K 07/01/18
Trouble Report System. The system for handling Multics trouble reports. 25K 07/24/19
The Reduction Compiler. A tool we used to build tools in Multics. 28K 07/24/19
Debug Breakpoint Handling. The sequence of events in a debug breakpoint. 81K 08/07/19
Code Auditing. The informal code review process used in Multics. 33K 07/24/19
PL/I. The history of EPL, Version 1 and Version 2 PL/I, as well as related topics. 62K 07/24/19
Development Process History. History of the Multics development process. 35K 11/27/19
B2 Security Evaluation. The history of Multics security features and the NCSC Orange Book security evaluation of Multics in the mid-80s. 146K 05/11/20
Communications and Networking. The evolution of Multics communication and networking facilities. 139K 07/24/20
Development Process. The Multics development process. 79K 06/18/20
Multics Failure Recovery. How Multics recovered from hardware and software failures. 63K 05/08/20
Execution Environment. The execution environment for Multics programs. Hardware architectural support and system conventions. 148K 05/10/20
The Computer Utility and the Community. 1967 paper describing the social imact of time-sharing and remote access. IEEE International Convention, 1967. 40K 07/04/17
Source Code. Index to source code modules on this site. 15K 07/24/19
source-index.pl1. Index to Multics source files by library and bound segment. 1850K 07/24/19
activate.pl1. PL/I source of File system module activate.pl1 30K 03/13/11
link_snap.pl1. PL/I source of dynamic linker. 43K 03/14/11
pxss.alm. ALM source of Multics scheduler. 176K 03/14/11
fim.alm. ALM source file for the Fault Interceptor Module. 115K 06/20/19
vtoc_man.pl1. PL/I source of the Multics storage system VTOC manager. 53K 03/14/11
dialup_.pl1. PL/I source of answering service module dialup_.pl1 177K 03/14/11
bound-info-rtns.s.archive. PL/I source of 12 Multics user ring programs. 391K 03/14/11
calendar.pl1. PL/I source of user command calendar.pl1 60K 03/14/11
bigletter_.pl1. PL/I source of utility module used in printer head page. 28K 03/14/11
mxload - Read Multics Backup Tapes. Description of mxload tools for reading Multics backup tapes. 17K 07/24/19
Development Documents. Internal documents produced during system development 29K 01/04/20
Multics Design Notebook, Section I: Introduction. Very early design documents. 17K 07/24/19
Multics System Programmer's Manual Table of Contents 187K 07/26/20
MSPM BA.1    MSPM - General Information. Early 1960s design for Multics. 9K 07/30/15
MSPM BA.2    Summary of Multics technical policy. Key early decisions. 11K 07/30/15
MSPM BA.3.00 Documentation Conventions. Rules for MSPM 12K 07/30/15
MSPM BB.2    System Module Interfaces (PL/I Subset for System Programming) 24K 04/20/20
MSPM BB.2.01 EPL Subset for System Programming. Definition of REPL. 11K 07/30/15
MSPM BB.3.01 Multics Standard Magnetic Tape Format 14K 07/30/15
MSPM BX.1.00 Multics Command Language. Language implemented by the shell. 24K 07/30/15
Index to MCBs. Multics Checkout Bulletins 39K 07/26/20
Index to MABs. Multics Administrative Bulletins 17K 07/26/20
Index to MTBs. Multics Technical Bulletins 241K 07/26/20
Index to MSBs. Multics Staff Bulletins 35K 07/26/20
Index to MCRs. Multics Change Requests 610K 07/26/20
AG91 TOC. Table of Contents of the Multics Programmer's manual: Reference Guide. 128K 07/24/19
AW17 Commands and Active Functions. List of Multics commands 101K 07/24/19
Segment Name Suffixes. List of legal segment name suffixes. 21K 07/24/19
Rules for the Multics Change Review Board. MAB-048 26K 03/08/17
Multics Simulator. About the SIMH based simulator for the Honeywell 6180 (DPS8M). 28K 06/27/20
Slides from VCF. Talk on DPS8M simulator, 11 Feb 2018. 860K 05/31/18
Notes pages from VCF. Talk on DPS8M simulator, 11 Feb 2018. 641K 06/01/18
Multics Simulator Instructions. Cookbook for downloading and setting up the simulator. 15K 07/24/19
Multics Simulator Instructions for Linux. Cookbook for downloading and setting up the simulator. 26K 11/22/19
Multics Simulator Instructions for macOS. Cookbook for downloading and setting up the simulator. 26K 06/27/20
Multics Simulator Instructions for Raspberry Pi. Cookbook for downloading and setting up the simulator. 26K 06/27/20
Multics Simulator Instructions for windows. Cookbook for downloading and setting up the simulator. 27K 10/06/19
Performance of the Multics Simulator on Raspberry Pi. Vince Scarafino's performance test of the simulator on a Raspberry Pi. 14K 07/24/19
Software Development Procedures for the Multics Simulator. How software changes for the simulator are proposed, made, and built. 21K 10/06/19
Sites. Listing of all Multics sites. 63K 07/29/20
Site Timeline. Graphical display of site history. 63K 07/29/20
Site History: AFDSC. US Air Force Data Services Center, Pentagon 22K 07/24/20
Site History: ASEA. ASEA, Västerås, Sweden 20K 07/24/19
Site History: Avon. Avon Universities Computing Centre, Bristol, England 41K 07/04/17
Site History: Bell Canada. Bell Canada, 2 sites 34K 06/12/19
Site History: CISL. Honeywell Cambridge Information Systems Laboratory, Cambridge MA 19K 06/09/20
Site History: DND-H. Canadian Department of National Defence, Halifax NS 26K 06/12/19
Site History: DOCKMASTER. US National Security Agency, Linthicum MD 27K 06/20/18
Site History: Ford. Ford Motor Company, Detroit, MI 25K 07/24/19
More Pictures of the Ford Multics Decomissioning. Cake at the Wake. 13K 07/04/17
Site History: GM. General Motors Corporate, Detroit, MI 28K 07/24/19
Site history: MIT. Massachusetts Institute of Technology, Cambridge, MA 27K 08/15/19
MIT Photos. MIT Multics Contract Signing event, 1980s 7K 09/24/12
MIT and BTL Hardware (1967) 14K 09/24/12
Site History: NWGS. US Navy Naval War Games system, 4 sites. 26K 03/26/16
Development of an Expert System Environment for use with a War Gaming System. 1988 AI and Computer Simulation Conference paper 181K 03/21/17
User Considerations and their Impact on an Expert System Building Tool for War Gaming. 1988 Eastern Computer Simulation Conference paper 1245K 03/21/17
Site History: OU. Oakland University, Rochester MI 22K 09/24/12
Site History: PRHA. Puerto Rican Highway Authority, San Juan, PR 19K 07/24/19
Site History: RADC. Rome Air Development Center, Griffiss AFB, Rome NY 29K 07/24/19
Site History: RAE. Royal Aircraft Establishment, Farnborough, Hampshire, England 16K 07/24/19
Site History: STC. Standard Telephones and Cables, New Southgate, London, England 25K 05/17/20
Site History: System M. Honeywell System M, Phoenix AZ 18K 10/26/19
Site History: CNO. Honeywell Corporate Network Operations, Minneapolis MN 29K 06/06/20
Pictures of CNO Multicians. Thanks to Dave Jordan 19K 06/04/20
Site History: System X. Bull Systeme X, Louveciennes, France 17K 08/07/19
Site History: UC & ACTC. University of Calgary, Calgary, Alberta, Canada 21K 07/24/20
Site History: USGS. US Geological Survey, 3 sites 21K 10/26/19
Site History: USL. University of Southwestern Louisiana, Lafayette LA 22K 03/24/20
Site History: VPI. Virginia Tech, Blacksburg VA 18K 07/28/20
About the Website. Administrative information. 22K 04/23/20
Web Site Design. Site design principles. 70K 07/29/20
Maintenance task documentation. Site maintenance instructions. 53K 07/18/20
Build process for Build process for 66K 07/17/20
Dashboard File. Description of summary counts. 14K 03/20/20
Dashboard File. Summary counts. 1K 03/20/20
Changes. Reverse chronological list of website changes this year. 16K 07/29/20
Changes 1994-2019. Website changes in prior years. 343K 07/29/20
News. Current events involving Multics 24K 06/20/20
Links. Links to other sites on the Web relevant to Multics. 60K 07/29/20
Image Gallery. Thumbnails of images on the site. 241K 06/25/20
Site Map 0K 07/29/20

725 MTBs are not listed: see the MTB Index. 84 MSBs are not listed: see the MSB Index. 10 MABs are not listed: see the MAB Index.