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Topic: Incompatible Timesharing System


  
 Incompatible Timesharing System - Wikipedia, the free encyclopedia
ITS, the Incompatible Timesharing System, was an early, revolutionary, and influential MIT time-sharing operating system; it was developed principally by the Artificial Intelligence Laboratory at MIT, with some help from Project MAC.
Among other significant and influential software subsystems which were developed on ITS, the Macsyma symbolic algebra system is probably the most important; the GNU INFO help system, MacLisp (the precursor of EmacsLisp and CommonLisp), and EMACS was also started on ITS.
ITS was initially developed for the Digital Equipment Corporation PDP-6 computer, and later moved to the PDP-10 once it became available, where it saw the majority of its development and use.
http://en.wikipedia.org/wiki/Incompatible_Timesharing_System   (888 words)

  
 TeX - encyclopedia article about TeX.
system created Computer programming (often simply programming) is the craft of implementing one or more interrelated abstract algorithms using a particular programming language to produce a concrete computer program.
The first version of TeX was written in the SAIL programming language SAIL, the Stanford Artificial Intelligence Language, was developed by Dan Swinehart and Sproull of the Stanford AI Lab in 1970.
WAITS WAITS was a heavily modified variant of the Digital Equipment Corporation's TOPS-10 operating system for the PDP-10 mainframe computer, used at the Stanford Artificial Intelligence Laboratory (SAIL) up until 1990; the mainframe computer it ran on also went by the name of "SAIL".
http://encyclopedia.thefreedictionary.com/TeX   (4166 words)

  
 List of operating systems - Simple English Wikipedia
Incompatible_Timesharing_System (The Incompatible Timeshare System, developed at MIT for the DEC 10 / 20 mainframes)
CTSS (The Compatible TimeShare System, developed at MIT by Corbato, et al)
UCSD P-system (portable complete programming environment/operating system developed by a long running student project at the Univ Calif/San Diego; directed by Prof Ken Bowles; written Pascal)
http://simple.wikipedia.org/wiki/List_of_operating_systems   (915 words)

  
 CTSS: Information From Answers.com
Multics, infamously, was the operating system that led to the development of Unix in 1970.
Although CTSS was not an influential operating system in its technical detail, it was very influential in showing that time-sharing was viable, in the new applications for computers which were first instantiated there, and because of its successor, Multics, which all modern operating systems are intellectually descended from.
CTSS was compatible with the Fortran Monitor System, an older batch computing system that ran on the 7094 computer before CTSS was invented.
http://www.answers.com/main/ntq-tname-ctss-fts_start-   (684 words)

  
 Open Sources: Voices from the Open Source Revolution
The AI Lab used a time-sharing operating system called ITS (the Incompatible Timesharing System) that the Lab's staff hackers[1] had designed and written in assembler language for the Digital PDP-10, one of the large computers of the era.
The GNU system includes programs that are not GNU software, programs that were developed by other people and projects for their own purposes, but which we can use because they are free software.
The idea that the proprietary software social system--the system that says you are not allowed to share or change software--is antisocial, that it is unethical, that it is simply wrong, may come as a surprise to some readers.
http://www.oreilly.com/catalog/opensources/book/stallman.html   (7190 words)

  
 ITS - TunesWiki
ITS (Incompatible Timesharing System) was a famous OS developed by hackers at MIT's AI lab from 1967 to the early 1980's for the DEC PDP-6 and PDP-10 family.
It was famous for being the antithesis of MIT's security-obsessed CTSS (Compatible Time-Sharing System), by being very hackable and so user rights were a matter of social respect and ethics alone, rather than the dictates of the system, which often limited performance and capacity of the system.
Richard Stallman, founder of the GNU project, got the idea of free software from his work with ITS.
http://tunes.org/wiki/ITS?source   (223 words)

  
 Mark Crispin - Wikipedia, the free encyclopedia
He is the author or co-author of numerous RFCs; and is the principal author of UW IMAP, one of the reference implementations of the IMAP4rev1 protocol described in RFC 3501.
In the early 1980s, he became interested in electronic mail software and systems, and presently that became his primary focus.
At Stanford, he was the principal developer of the TOPS-20 mailsystem, and still runs TOPS-20 systems at his residence.
http://en.wikipedia.org/wiki/Mark_Crispin   (174 words)

  
 NodeWorks - Encyclopedia: IT: ITS
ITS can mean: the Incompatible Timesharing System: a revolutionary computer operating system; an Intelligent Transportation System, using technology to improve the efficiency of roads; the Institute of Technology,...
http://pedia.nodeworks.com/I/IT/ITS   (46 words)

  
 Re:[freenet-chat] DMCA/SSSCA/Software Patents from 1950
Further, current timesharing were sub-optimal beasts; hackers don't use sub-optimal software.
Still, they had to live with timesharing systems, so they did what any good hackers do: Write their own timesharing software.
Putting computers in a "locked box" as you describe would most certinaly make this a DMCA violation.
http://www.mail-archive.com/chat@freenetproject.org/msg01133.html   (532 words)

  
 Glossary
The operating system is also responsible for hiding the details of the computer hardware from the application programmers, e.g., letting a programmer say "I want to write ABC into a file named XYZ" without the programmer having to know how many disk drives the computer has or what company manufactured those drives.
The original system was built in the late 1970s and ran on one of the wide-area computer networks later subsumed into the Internet.
Computer systems typically incorporate capacious storage devices that are slow (e.g., disk drives) and smaller storage devices that are fast (e.g., memory chips, which are 100,000 times faster than disk).
http://philip.greenspun.com/panda/glossary.html   (4057 words)

  
 INSS 690 Term Paper - "Divergent Roads"
Although the software was not called open-source or free software, the source code was available to be modified and improved as necessary by anyone having the skills and gumption to do it.
Minix was an academic study of the popular Unix operating system but lacked much of the functionality.
The PDP-10 was one of the most powerful computers of the 1960's and 1970's, but as the 1980's started unfolding, it was unable to keep pace with the technology.
http://faculty.ed.umuc.edu/~meinkej/inss690/mackle/how-the-west.html   (1764 words)

  
 ITS - Incompatible Time Sharing
AI was the machine where all ITS development took place, so its file system contained everything needed to build and maintain working ITS systems.
Thus, we have prepared subsets of those final file systems that we believe are free of all private information.
There is also a complete listing of the MC file system.
http://www.its.os.org   (338 words)

  
 "Chapter 2"
The MIT's AI Lab was unique in that they ran their own operating system on their computers.
Stallman was a student at MIT and became a part of MIT's AI Labs in 1971.
In 1984, Stallman started the GNU project, which was to provide the world with a free usable system.
http://home.swbell.net/depsgp/chapter2b.htm   (511 words)

  
 Mob Software
Even though the designers of this system didn’t think of it this way, this is a clearly biological approach to the problem: a swarm of small repair agents fixing up code on the fly to make it work when the context of its operation has changed.
In general, the ITS system can be said to have been designer implemented and user designed.
Back in the 1960s and ’70s, PhD dissertations in computer science—and especially in artificial intelligence—contained the source code for the program described in the dissertation.
http://www.dreamsongs.com/MobSoftware.html   (11627 words)

  
 Incompatible Timesharing System bibliography - stsWiki
The Lab was trying to differentiate itself from Project MAC, where they were studying how to make a timesharing operating system; the AI Lab people wanted to USE a timesharing operating system and actually get some work done.
During the same period, there are dozens of reports and publications on the AI lab software the lab created.
I'm really surprised that there hasn't been more work done on the technology that was created by those legendary hackers at the AI Lab.
http://www.stswiki.org/wiki/Incompatible_Timesharing_System_bibliography   (343 words)

  
 Computers
I have dedicated a page to them and to one timesharing system that ran on the PDP-6 and PDP-10, the Incompatible Timesharing System (ITS), written at MIT and mostly used there.
One can definitely say that the PDP-1, -6, and most especially -10 have attained legendary status, in part because they were the machines favored by hackers of the MIT AI Lab.
http://www.eleves.ens.fr/home/zoghaib/comp/index.html.en   (488 words)

  
 XEmacs Internals Manual: A History of Emacs
It began as Lucid Emacs, which was in turn derived from GNU Emacs, a program written by Richard Stallman of the Free Software Foundation.
GNU Emacs dates back to the 1970's, and was modelled after a package called "Emacs", written in 1976, that was a set of macros on top of TECO, an old, old text editor written at MIT on the DEC PDP 10 under one of the earliest time-sharing operating systems, ITS (Incompatible Timesharing System).
(ITS dates back well before Unix.) ITS, TECO, and Emacs were products of a group of people at MIT who called themselves "hackers", who shared an idealistic belief system about the free exchange of information and were fanatical in their devotion to and time spent with computers.
http://www.la.utexas.edu/lab/software/user/gnu/xemacs-internals/internals_1.html   (191 words)

  
 [No title]
* ITS (Incompatible Timesharing System): A History of Emacs.
(On some systems, there is no need to record this, so the value is `-1'.) `tty_name' The name of the terminal that the subprocess is using, or `nil' if it is using pipes.
* temporary objects: The XEmacs Object System (Abstractly Speaking).
http://www.rpi.edu/AFS/home/41/bailem2/rt/campus/gnu/xemacs/19.14/rs_aix41/src/info/internals.info-7   (2347 words)

  
 NewsForge 20 years after the announcement of GNU
In addition I have implemented one crashproof file system and two window systems for Lisp machines.
Insteed I get a system which is far better than windoze and which has so many s/ws that every day I find a new and interesting one.
In particular, we plan to have longer filenames, file version numbers, a crashproof file system, filename completion perhaps, terminal-independent display support, and eventually a Lisp-based window system through which several Lisp programs and ordinary Unix programs can share a screen.
http://newsvac.newsforge.com/newsvac/03/09/29/1337205.shtml?tid=15   (1042 words)

  
 iqexpand.com
ITS: The Incompatible Time Sharing System When we turned off the last ITS machines at MIT (the AI and...
Look for Incompatible timesharing system in Wiktionary, our sister dictionary project.
RichardStallman explains how the MitAiLab kept an anarchic multiuser system and thus prevented destruction of their computer facilities.
http://incompatible_timesharing_system.iqexpand.com   (219 words)

  
 Richard Greenblatt - Art History Online Reference and Guide
Dreyfus was beaten by the program, and this marked the beginning of computer chess.
Later, he was the main designer of the MIT Lisp machine.
He also wrote, with Tom Knight and Stewart Nelson, the Incompatible Timesharing System, a highly influential timesharing operating system for the PDP-6 and PDP-10 used at MIT.
http://www.arthistoryclub.com/art_history/Richard_Greenblatt   (170 words)

  
 Phil's PDP10 Miscellany Page
Jack Dennis implemented hardware extensions to the PDP-1, and implemented a timesharing system for it.
I was also a tourist on the MIT ITS systems as BUDD (a typo that stuck).
DEC gave an early system to MIT, where it was installed in a room next to the TX-0.
http://www.ultimate.com/phil/pdp10   (3734 words)

  
 The IBM 7094
This machine is running MIT's Compatible Time Sharing System (CTSS), arguably the first timesharing system, which was later countered by MIT's PDP-10 based Incompatible Timesharing System (ITS).
An IBM Photo Archive shot of a large 7094 system.
Above: Views of the IBM 7094 at MIT about 1962 (found on the Web).
http://www.columbia.edu/acis/history/7094.html   (155 words)

  
 TOPS-20 - Wikipedia, the free encyclopedia
The first in-house code name for the operating system was VIROS (VIRtual memory Operating System); when customers started asking questions, the name was changed to SNARK so DEC could truthfully deny that there was any project called VIROS.
The hacker community, mindful of its origins, quickly dubbed it TWENEX (a contraction of "twenty TENEX"), even though by this point very little of the original TENEX code remained (analogously to the differences between ATandT V6 Unix and BSD).
The TOPS-20 operating system by DEC - the second proprietary OS for the PDP-10 - preferred by most PDP-10 hackers over TOPS-10 (that is, by those who were not ITS or WAITS partisans).
http://www.encyclopedia-online.info/TWENEX   (318 words)

  
 Luser - Wikipedia, the free encyclopedia
Under ITS, when you first walked up to a terminal at MIT and typed Control-Z to get the computer's attention, it printed out some status information, including how many people were already using the computer; it might print "14 users", for example.
Someone thought it would be a great joke to patch the system to print "14 losers" instead.
http://www.encyclopedia-online.info/Luser   (270 words)

  
 [ih] Origin of 'talk' command
We had stuff like this at MIT on nearly every timesharing system (including CTSS on the 7094, Multics, ITS).
I think I helped build such a talk program on Multics as part of the SIPB system that I worked on under Bob Frankston's direction in 19769-1970.
As I recall, the 940 system was quite different from CTSS's; it worked by linking the output channel of two (or more?) ttys so that anything sent to one of them was output to both.
http://www.postel.org/pipermail/internet-history/2002-December/000191.html   (855 words)

  
 [metapost] Dumping preloaded executables in the [g]?olden days
The original system cost was over $250K, and one served the College of Science at Utah for 12 years, and another the Department of Computer Science for about 10 years.
The KLH10 simulator, running on a Sun Blade 2500 with dual 1.28GHz CPUs, is about six times faster than our original DEC-20/60 was; that system was retired on 31-Oct-1990.
No special hacks or magic system calls were needed to do this, so even user programs on TOPS-20 made use of the feature to eliminate the overhead of reprocessing startup data on every run.
http://www.tug.org/mail-archives/metapost/2005-January/000064.html   (659 words)

  
 [No title]
You don't seem to understand that OZ exists so that new systems hackers can get some practice -- if OZ actually supported users in a useful way, there would be something wrong.
In other words, there should be enough programs that each lab member can do the same thing with a different program.
You just don't notice it because you're used to the Incompatible Timesharing System.
http://www.ibiblio.org/pub/docs/humor/fionavar/bugoz_reply   (402 words)

  
 OSS for DL: OSS Timeline
Artificial Intelligence Lab (AI) at MIT develops an operating system called Incompatible Timesharing System (ITS).
From the Manifesto: " GNU, which stands for Gnu's Not Unix, is the name for the complete Unix-compatible software system which I am writing so that I can give it away free to everyone who can use it.
Microsoft admits to using FreeBSD code to implement ICP/IP in Windows.
http://www.clayfox.com/library/oss/pages/timeline.html   (549 words)

  
 Incompatible Timesharing System (ITS)
Existing timesharing systems were slow, expensive, and not well suited for AI and robotics work.
From what I've seen, it was like Unix (perhaps ITS was an influence on Unix?), but simpler and more efficient.
The ITS graphics system was said to be very flexible and efficient, probably similar to GGI or SVGAlib.
http://people2.clarityconnect.com/webpages5/tcn/hack/its.html   (127 words)

  
 tcn's hacking projects
Before I started writing an operating system, I was building an easy to use Linux distribution.
First of all, I want something nice and simple, inexpensive and easy to program (unlike Intel machines).
There are other people working on the same thing; see www.linux.org.
http://people2.clarityconnect.com/webpages5/tcn/hack   (499 words)

  
 ITS - the Incompatible Timesharing System
New theory: the "host" device (idling the kn10 process in the null job).
If you run Linux, you may be interested in my patch for klh10 to support the Linux tun device (version for klh10-2.0g) (
These are some brief notes on setting up an ITS system based on klh10 and the PI (Public ITS) distribution.
http://www.victor.se/bjorn/its   (1051 words)

  
 Links
MIT had the Incompatible Timesharing System (ITS), Stanford had WAITS, etc. I have been gathering information mainly about ITS.
Jaap Weel's page : information about Lisp, Scheme and the Lisp Machines
Each university usually ran its own operating system on it.
http://www.eleves.ens.fr/home/zoghaib/links.html.en   (372 words)

  
 RCS DECsystem Information
ITS: The Incompatible Time Sharing System (Alan Bawden)
ITS - The Incompatible Timesharing System (Mirian Crzig Lennox)
http://starfish.rcsri.org/rcs/DECsystem/DECsystems.html   (77 words)

  
 ITS
the Incompatible Timesharing System was a revolutionary operating system
an Intelligent Transportation System, using technology to improve the efficiency of roads
If you followed a link here, you might want to go back and fix it.
http://www.teachersparadise.com/ency/en/wikipedia/i/it/its.html   (76 words)

  
 incompatible_timesharing_system - OneLook Dictionary Search
We found one dictionary with English definitions that includes the word incompatible timesharing system:
Tip: Click on the first link on a line below to go directly to a page where "incompatible timesharing system" is defined.
http://www.onelook.com/?w=incompatible_timesharing_system&loc=resrd   (74 words)

  
 Emulators (was: Classic Computers vs. Classic Computing
Previous message: Incompatible Timesharing System (ITS) Starter Kit Available
http://www.classiccmp.org/pipermail/cctalk/2001-September/181431.html   (175 words)

  
 Incompatible Timesharing System (ITS) Starter Kit Available
Thanks to the efforts of many people for preserving the ITS operating system, and to the more recent efforts by Mirian Crzig Lennox in creating an ITS starter kit, interested parties can now run ITS on Bob Supnik's SIMH PDP-10 sim.
http://www.classiccmp.org/pipermail/cctalk/2001-September/181384.html   (228 words)

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