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• Running ITS (the Incompatible Timesharing System) on the KL-10
  <div style="text-align:center;">Running ITS (the Incompatible Timesharing System) on the KL-10</div> ...to allow us to run our [[time-sharing]] system [[Incompatible Timesharing System|ITS]]. We propose to implement this ITS [[Virtual memory#Implementation|pag
  23 KB (3,961 words) - 17:58, 5 January 2024
• ITS on-disk file system layout
  Description of [[Incompatible Timesharing System|ITS]] [[file system]]'s on-disk data structures. ...not cross a cylinder boundary. '''NBLKS''' is a symbolic constant in the system which is the number of (usable) blocks on a disk pack.
  2 KB (388 words) - 02:40, 16 January 2024

Page text matches

• Main Page
  ...email address to associate with it, and I'll try and get right to it. The system will send you an email with a temporary password; if you don't see it, and
  4 KB (643 words) - 19:13, 24 April 2024
• DECnet
  DECnet was built right into the DEC flagship operating system [[VMS|VAX/VMS]] since its inception. Digital also ported it to its own [[Ul Support limited to 2 PDP-11s running the [[RSX-11]] operating system only, with communication over point-to-point ([[DDCMP]]) links between node
  17 KB (2,405 words) - 17:43, 13 January 2024
• RSX-11
  '''RSX-11''' is a family of [[real-time system|real-time]] [[operating system]]s for [[PDP-11]] computers, created by [[Digital Equipment Corporation|DEC ...executive based on RSX-11C with support for [[disk]] I/O. To start up the system, first DOS-11 was booted, and then RSX-11B was started. RSX-11B programs u
  7 KB (1,188 words) - 22:11, 6 August 2023
• RSTS/E
  ...Extended''') was a [[multi-user]] [[time-sharing|time-shared]] [[operating system]] developed by [[Digital Equipment Corporation]] ("DEC") for the [[PDP-11]] ...st license to anyone for non-commercial hobby purpose use of the operating system software developed for the PDP-11, and as the result of the release (for no
  14 KB (2,134 words) - 16:06, 3 May 2023
• DECnet on VMS
  Note: Before setting up any system I recommend you read up on [[DECnet Phase IV basics]]. To invoke the interactive DECnet configuration script, run (as SYSTEM or as a user with sufficient privileges):
  3 KB (447 words) - 22:03, 17 August 2022
• PDP-11
  There were a number of well-known [[operating system]]s for the PDP-11. Many were produced by [[DEC]] themselves, but several we UNIX was not originally a PDP-11 system (it was born on the [[PDP-7]]), but it moved to the PDP-11 shortly after it
  10 KB (1,393 words) - 16:03, 23 April 2024
• PDP-11/05
  The earliest units came in a 5-1/4" box, which had room for only a double [[system unit]] [[backplane]]. (Additional memory was initially indicated to require ...e versions, with four different versions of the main backplane (the 9-slot system unit holding the two CPU cards). All have two [[DEC card form factor|single
  9 KB (1,350 words) - 19:18, 8 February 2024
• PDP-11/10
  | caption = A PDP-11/10 system
  2 KB (233 words) - 19:22, 8 February 2024
• QBUS
  ...LSI-11]]), was intended as a cheaper alternative to the [[UNIBUS]] general system [[bus]] from [[Digital Equipment Corporation|DEC]]. It was widely used in l ...(usually main memory) implements [[parity]] or some other error detection system (e.g. [[Error-correcting code|ECC]]). If BDAL16 is asserted, that indicates
  13 KB (2,043 words) - 23:27, 14 January 2024
• UNIBUS
  ...mized the amount of redundant logic required in the system. For example, a system always contained more slave devices than master devices, so most of the com
  13 KB (2,162 words) - 23:26, 14 January 2024
• PDP-11/34
  ...]]'s lower-cost replacement to the [[PDP-11/40]] as the low-end [[PDP-11]] system capable of running [[time-sharing]], using [[memory management]]; it had th ...oating point]] unit, and the [[KK11-A Cache Memory|KK11-A]] [[cache]] (the system could use either, or both).
  4 KB (536 words) - 19:28, 8 February 2024
• PDP-11/04
  ...front panel had only 'Boot/Init', 'Halt/Cont', and power switches, and the system came with an [[M9301 ROM]] card which included a console emulator, which co ...u/pdf/EK-11004-OP-001%20PDP-11-04%20System%20User's%20Manual.pdf PDP-11/04 system user's manual]
  3 KB (444 words) - 23:36, 29 February 2024
• PDP-11/20
  | operating system = [[DOS-11]], [[DOS/BATCH]], [[RSTS-11]], [[UNIX]], others The CPU consisted of two and a half quad [[system unit]] [[backplane]]s (the two otherwise-unused slots were [[Small Peripher
  6 KB (900 words) - 19:27, 31 December 2023
• PDP-11/24
  The '''PDP-11/24''' was the last low-end [[UNIBUS]] [[PDP-11]] system; it used the [[KDF11-U CPU]]. Like the earlier [[PDP-11/44]], the -11/24 su ==System bus structure==
  8 KB (1,395 words) - 23:37, 29 February 2024
• PDP-11/44
  The '''PDP-11/44''' was a high performance [[UNIBUS]] [[PDP-11]] system; in some senses a lower-cost successor to the [[PDP-11/70]], although witho ** [http://bitsavers.org/pdf/dec/pdp11/1144/1144_UsersGuide.pdf PDP-11/44 System User's Guide] (EK-11044-UG-003)
  4 KB (584 words) - 23:42, 29 February 2024
• PDP-11/40
  .../pdf/dec/pdp11/1140/DEC-11-H40SA-A-D_PDP-11_40_System_manual.pdf PDP-11/40 system manual] (DEC-11-H40SA-A-D) ...f/dec/pdp11/1140/1140_SystemManual.pdf PDP-11/40, -11/35 (21 inch chassis) system manual] (EK-11040-TM-002)
  4 KB (664 words) - 19:08, 8 February 2024
• PDP-11/45
  The '''PDP-11/45''' was the early fast [[UNIBUS]] [[PDP-11]] system, using the [[KB11-A CPU]] (early units, prior to 1976) or [[KB11-D CPU]] (l ...old pre-configured with the special high-speed [[MS11 Semiconductor Memory System]] (specific to the PDP-11/45), using 350 nsec [[Metal Oxide Semiconductor|M
  6 KB (895 words) - 23:52, 29 February 2024
• PDP-11/70
  The '''PDP-11/70''' was a very high performance [[UNIBUS]] [[PDP-11]] system; it basically took the high-performance [[Central Processing Unit|CPU]] of ...memory system]] (which used [[core memory]]), and the later [[MK11 memory system]] (which used [[dynamic RAM]]).
  5 KB (729 words) - 23:43, 29 February 2024
• PDP-11/84
  ...tallation%20And%20Technical%20Reference%20Manual.pdf Preliminary PDP-11/84 System Technical and Reference Manual] (EK-1184E-TM-PR1) ...//www.bitsavers.org/pdf/dec/pdp11/1184/EK-1184E-TM-001_Dec87.pdf PDP-11/84 System Technical and Reference Manual] (EK-1184E-TM-001)
  2 KB (315 words) - 23:23, 29 February 2024
• PDP-11/94
  ...p://bitsavers.org/pdf/dec/pdp11/1194/EK-PDP94-MG-001_Sep90.pdf PDP-11/94-E System User and Maintenance Guide] (EK-PDP94-MG-001)
  817 bytes (120 words) - 04:08, 20 February 2023
• PDP-11/53
  The '''PDP-11/53''' was an all in one [[QBUS]] system solution based on the [[KDJ11-D CPU]]. ...PDP11/AZ-GPTAA-MC_MicroPDP11_53_System_Supplement_Jun86.pdf MicroPDP-11/53 System Supplement Manual] (AZ-GPTAA-MC)
  1 KB (200 words) - 23:24, 29 February 2024
• PDP-11/93
  * [https://www.pdp-11.nl/pdp11-93startpage.html µPDP-11/93 System Overview]
  970 bytes (145 words) - 13:43, 20 February 2023
• PDP-11/23
  The '''PDP-11/23''' was the second [[QBUS]] [[PDP-11]] system; it used the [[KDF11-A CPU]] (M8189).
  2 KB (289 words) - 13:31, 15 May 2022
• Digital Equipment Corporation
  ...l mill in Maynard, Massachusetts. The original product line was modules, [[System Module]]s. Once those were established, they started producing computers us
  5 KB (624 words) - 19:19, 19 March 2024
• RK11 disk controller
  ...uad]] cards (M7254-7), which plugged into a custom-wired 4 slot hex-high [[system unit]] [[backplane]], for a [[BA11 mounting boxes|BA11]] slide-out mounting It was used with the [[UNICHANNEL 15 System|UC15 Unichannel]], which used a PDP-11 (usually a [[PDP-11/05]]) acting as
  14 KB (2,038 words) - 23:04, 13 September 2023
• RL01/02 disk drive
  ...rporation|DEC]]. They used an [[IBM 5440]] type pack, as used on the [[IBM System/3]]. Up to 4 drives may be attached to a single [[device controller|control To keep the [[head]]s properly aligned on the tracks, it used a servo system driven by servo data written on the pack (along with [[sector]] headers) at
  8 KB (1,357 words) - 16:33, 18 August 2023
• PDP-11 architecture
  A variety of other instructions (e.g. to trap to the [[operating system]], [[halt]] the CPU, etc) also exist.
  13 KB (1,949 words) - 17:37, 29 February 2024
• RK05 disk drive
  ...y 4 per bus with the earlier RK02/03 and [[RK11-C disk controller|RK11-C]] system. (The RK11-C has two different drive buses, each which can handle up to fou
  7 KB (1,170 words) - 00:30, 15 August 2023
• PDP-11/23-PLUS
  ...u/pdf/EK-1T23B-OP-001%20PDP11-23-PLUS%20System%20Manual.pdf PDP-11/23-PLUS System Manual]
  2 KB (223 words) - 16:36, 6 April 2024
• VAX-11/780
  ...ref_4|[4]]] The VAX-11/780 was given the codename "Star" and its operating system, VAX/VMS, was codenamed "Starlet".[[#ref_4|[4]]] VAX/[[VMS]] Version V1.0 s * the [[MS780 Memory System]] main memory;
  8 KB (1,030 words) - 21:30, 25 April 2024
• VAX-11/782
  ==VAX-11/782 Attached-processor System== ...ttached-processor system is a tightly coupled, asymmetrical multiprocessor system based on a MA780 multiport shared memory.
  3 KB (420 words) - 09:14, 15 July 2023
• VAX-11/750
  [[Image:VAX750block.jpg|left|thumb|450px|VAX-11/750 system block diagram, showing the major /750 functional units and how they connect * [[MS750 Memory System]]
  8 KB (1,063 words) - 14:49, 8 May 2024
• Atari 800XL
  | operating system = Built-in [[BASIC]], and Atari DOS
  1 KB (182 words) - 15:22, 17 September 2019
• UNIX
  ...IX' to 'Unix' as of [[Unix Seventh Edition|V7]]) is a computer [[operating system]] originally developed in the 1970s by a group of AT&T employees at Bell La ...Sharing System]] (on which Thompson worked), and [[Compatible Time-Sharing System|CTSS]] and [[Multics]] (on which all of them had worked, before [[Bell Labs
  9 KB (1,409 words) - 17:47, 10 March 2024
• MOS Technology 6502
  ...nia Micro Devices]], and Ricoh. Ricoh made a variant for the Nintendo game system, this version missed the BCD instructions - presumably never needed for Nin
  8 KB (1,369 words) - 17:59, 25 June 2021
• Commodore 64
  | operating system = In-ROM [[Microsoft BASIC]] v 2.0
  3 KB (354 words) - 14:20, 25 October 2018
• Applesoft BASIC
  ...he BASIC command interpreter was placed in a separate program called BASIC.SYSTEM. ...bytecode that was interpreted by a runtime module, much like the [[UCSD p-System]].
  8 KB (1,203 words) - 19:34, 20 June 2023
• VMS
  | caption = Logging into a 4.7 VMS system '''VMS ''' is a high-end, secure, [[multi-tasking]] [[operating system]] written by [[Digital Equipment Corporation]] and currently actively maint
  2 KB (335 words) - 10:03, 27 April 2024
• User notes for RSTS/E 9.x system generation
  Generating a system on version 9 of the [[RSTS/E]] [[operating system]] is much, MUCH easier than on the earlier releases. This is largely becau ...f this writing (May 2007) there are several methods of generating a RSTS/E system, depending on what hardware you have available.
  964 bytes (163 words) - 15:56, 3 May 2023
• VAX-11/730
  ...he [[main memory]] uses the same internal memory bus as the [[MS750 Memory System]] (and thus the same memory array modules, 1-5 of them).
  5 KB (708 words) - 12:22, 29 March 2023
• Timeline of Norsk Data
  * A virtual memory system for the NORD-1 is created. Seemingly the first minicomputer to do so. (IIRC * Development is started on the [[NORDIC]] system, [[NORDCOM]], and [[NORD-20]].
  7 KB (950 words) - 12:59, 23 August 2016
• NORD-10
  ...acting on each page and one on the mode of instructions. The [[interrupt]] system had 16 program levels in hardware, each with its own set of [[general-purpo ...a introducing the NORD-10. Some information, particularly about the memory system, may not be accurate for the later NORD-10/S.''
  8 KB (1,313 words) - 13:52, 11 July 2023
• MicroVAX I
  The MicroVAX I bootstrap [[ROM]] can only bootstrap a system disk attached to the first [[Mass Storage Control Protocol]] (MSCP) control (DABO) will be the new system disk:
  10 KB (1,543 words) - 02:27, 7 May 2024
• MicroVAX II
  The following [[operating system]]s can run on the MicroVAX II: In version 4 of the [[VMS]] operating system there were two different subversions:
  5 KB (716 words) - 13:37, 6 May 2024
• PDP-7
  | operating system = DECSYS-7 ...their [[FLIP CHIP|Flip-Chip®]] technology, but also included the older [[System Module]]s.
  3 KB (418 words) - 14:35, 11 July 2023
• PDP-10
  ...perating system]]s written for them (especially [[Incompatible Timesharing System|ITS]]). There are several good [[simulator]]s available, notably [[SIMH]] a * RC10 disk/drum system - RD10 [[fixed-head disk]], RM10B [[drum]]
  11 KB (1,640 words) - 20:59, 8 March 2024
• TOPS-20
  ...[PDP-10]], [[DECSYSTEM-20]]. It was descended from [[TENEX]], an operating system for a modified version of the earlier [[KA10]] PDP-10; hence its nickname o
  1 KB (182 words) - 18:11, 12 December 2023
• PDP-8 architecture
  ...ingle-bit "link register", L). The first model used a magnetic core memory system that operated at a cycle time of 1.5 microseconds, so that a typical two-cy ...s that affected the processor as a whole such as turning the [[interrupt]] system on (ION, opcode ''6001'') and off (IOFF, opcode ''6002''). The PDP-8 proces
  22 KB (3,497 words) - 19:34, 29 November 2022
• Bus
  In many microcontrollers and [[embedded system]]s, an I/O bus still does not exist. Communication is controlled by the CP ...r to talk to other devices in the computer. While acceptable in [[embedded system]]s, this problem was not tolerated for long in commercial computers.
  14 KB (2,170 words) - 05:09, 5 September 2019
• Linux
  Linux is a computer [[operating system]] originally developed in the 1990s by a student Linus Torvalds. Today's Li ...], early [[Macintosh|Macs]], a partial port to the [[VAX]] and a port to [[System/390]] as well as various [[SGI]] and [[Sun Microsystems]] workstations and
  28 KB (4,805 words) - 18:01, 29 February 2024
• CP/M
  CP/M was an early [[operating system]] for [[microcomputer]]s. It was ported to several CPUs, the first and mos ...e first version of (PC-)DOS didn't either). CP/M was a portable operating system that was popularized because it was cheap, and was not resource intensive,
  3 KB (539 words) - 18:26, 6 April 2023
• Sun-2
  ...C tape drive could be connected through an Archive QIC/SCSI converter. The system also supported 1/2" tape drives connected to a Computer Products Corporatio
  4 KB (605 words) - 08:49, 27 February 2024
• Running NetBSD on a VAX
  Performing normal system tests.<br> root file system type: ffs<br>
  6 KB (970 words) - 18:48, 12 August 2010
• VAX-11/785
  <div id="ref_3">[3] VAXcluster Systems Guidelines for VAXcluster System Configurations". EK–VAXCT–CG–006</div>
  2 KB (193 words) - 04:26, 13 January 2024
• FLIP CHIP
  ...rs, and [[peripheral]]s for them. They were a successor to DEC's earlier [[System Module]]s. They were introduced as a replacement largely as a cost-reductio ...le, for cost reasons, to decrease the amount of connectors used in a (sub)-system, so the larger cards became the preferred direction.
  10 KB (1,460 words) - 15:50, 6 March 2024
• IBM System/360
  | name = System/360 <!-- | logic type = [[Standard Modular System|SMS]] cards using alloy-junction [[transistor]]s -->
  15 KB (2,167 words) - 14:58, 23 January 2024
• DIGITAL Command Language
  ...y [[RSX-11]], but took its most powerful form in the [[OpenVMS]] operating system. ...r|compiled language]] counterparts and allow scripts to get information on system state. DCL includes [[Conditional statement|IF-THEN-ELSE]], access to all t
  6 KB (913 words) - 18:07, 16 December 2018
• PDP-8/I
  | operating system = [[TSS/8]]. Disk Monitor System
  3 KB (416 words) - 14:10, 14 July 2023
• Atari
  ...al [[Commodore]] Atari quickly put together the Atari ST. The [[operating system]] was provided by [[Digital Research]], GEMDOS.
  1 KB (191 words) - 04:48, 13 January 2024
• VAX 9000 series
  ...Corporation|DEC]] as a '[[mainframe]] computer'. They were built around a System Control Unit (SCU), which allowed the configuration of tightly-coupled [[mu ...[front end]]; it was primarily tasked with overseeing the operation of the system, e.g. error detection and recovery.
  3 KB (417 words) - 00:45, 7 May 2024
• MicroVAX 3800/3900
  ...nly for [[input/output|I/O]]; [[main memory]] used the [[KA650 Main Memory System]], using a special [[bus]] carried on [[over the back]] connectors as well ...Xserver 3900'''. The difference between these and the MicroVAXen is in the system ROM on the [[Central Processing Unit|CPU]] board, which prevents multi-user
  3 KB (380 words) - 07:06, 31 January 2024
• 4.3 BSD
  | caption = Logging into a 4.3 BSD system ...ws [[4.2 BSD]], with more mature [[TCP/IP]] networking, an improved [[file system]], in -Tahoe, partial cross-platform capability, and in -Reno, a significan
  5 KB (649 words) - 15:08, 20 October 2023
• SunOS
  ...Unix system used by many. Unlike Solaris, which is based primarily upon [[System V]], SunOS is based extensively on [[BSD]], and by the 4.x releases, being |Bundled with [[Motorola 68000|68000]]-based Sun-1 system
  4 KB (484 words) - 08:09, 20 November 2023
• ULTRIX
  | caption = Logging into an Ultrix 4.0 system ...for the VAX was derived from [[4.2 BSD]] with some influences from [[UNIX System V|SYSV]] and included support for specific DEC technologies. The latest ver
  3 KB (370 words) - 03:59, 13 January 2024
• SIMH
  ...tems can network directly onto the [[Internet]], if the emulated operating system supports it, like BSD or [[VMS]]. ...ost versions of TOPS-10 and TOPS-20, as well as [[Incompatible Timesharing System|ITS]], [[WAITS]], and (soon) [[TENEX]].
  5 KB (845 words) - 22:53, 14 January 2024
• Macintosh
  The Macintosh II series all had a 68020 or better CPU and ran System 4 through 7.5 depending on model. [[A/UX]] was available as an additional ...computers of their eras), but for their operating system, MacOS, Macintosh System Software... it goes by a few names.
  6 KB (957 words) - 20:06, 4 October 2023
• MicroVAX 3500/3600
  They used the [[KA650 CPU]]; [[main memory]] used the [[KA650 Main Memory System]], using a special bus carried on [[over the back]] connectors as well as t ...es/c/c6/EK-VAXCT-CG-006.pdf VAXcluster Systems - Guidelines for VAXcluster System Configurations] (EK-VAXCT-CG-006)</div>
  3 KB (410 words) - 20:26, 10 March 2024
• 4.2 BSD
  | caption = Logging into a 4.2 BSD system ...s the basis for [[SunOS]]. Later [[Sun Microsystems|Sun]] licensed [[UNIX System V|SYSV]] from AT&T and started to incorporate the two versions, before swit
  4 KB (556 words) - 15:06, 20 October 2023
• Installing 4.2 BSD on SIMH
  -rw-r--r-- 1 Neozeed +SYSTEM 69943640 Feb 6 12:39 42.tap Build root file system
  13 KB (2,064 words) - 18:04, 5 August 2017
• Zork
  On-line information may be obtained with the commands HELP and INFO. Zork's [[Muddle]] source on [[Incompatible Timesharing System|ITS]] for the [[PDP-10]].
  21 KB (3,303 words) - 07:30, 6 September 2023
• PuTTY
  ...rt about putty is that it does not require any installation, nor any other system packages, you can just download and run the exe. Putty also can handle var
  2 KB (267 words) - 23:22, 19 December 2023
• Installing 4.3 BSD on SIMH
  Build root file system Check the file system
  14 KB (2,318 words) - 06:15, 1 September 2018
• UNIX First Edition
  ...nt. UNIX soon spread to other groups at Bell; the Switching Control Center System group also used UNIX on an -11/20 for their early work. ...a single [[RS11 disk drive]] (512KB) for both [[swapping]] and the [[file system]]. By the time of the version for which we have the [[source code]] (below)
  6 KB (926 words) - 19:13, 29 February 2024
• Installing 4.3 BSD Quasijarus on SIMH
  ...use a web browser to download them, to deal with the sourceforge download system. But that's the price of free hosting.<br><br> Performing normal system tests.
  16 KB (2,460 words) - 12:02, 6 September 2021
• Gzcompat
  ...easily be decompressed. This is for the [[4.3 BSD]] Quasijarus Operating System.
  4 KB (549 words) - 20:09, 27 June 2020
• Installing 4.3 BSD RENO on SIMH
  ...E that the tape does NOT boot under SIMH. Instead you also need a 4.3 BSD system to build the bootable disk to be used for RENO. starting system logger, time daemon.
  9 KB (1,433 words) - 15:40, 18 August 2009
• TK50 Tape Drive
  The '''TK50 Tape Drive''' was a [[magnetic tape]] [[backup]] system popular on [[VAX]]en and other [[Digital Equipment Corporation|DEC]] comput
  2 KB (283 words) - 14:08, 27 July 2023
• Unix Seventh Edition
  ...ixth Edition|V6]] (from the user's point of view) was that the [[UNIX file system]] had been modified to use 32-bit [[disk block]] numbers, to support the la ...ddition of the [[process]]' 'environment', and the addition of the exece() system call to pass it
  5 KB (776 words) - 19:30, 21 October 2023
• Mini vMac
  ...Mac.rom] you are almost ready to go! Now you need a copy of the operating system. Luckily Apple has made systems prior to 7.6 free, and you can download th ...QUExFJTVEJTIwTWFjJTIwSUl4LUlJY3gtU2UzMC56aXA= macII.rom]. I've found that System 7 works best, and is available below.
  2 KB (373 words) - 11:04, 15 April 2019
• SheepShaver
  ...Sheepshaver_system_755.png|300px|thumb|right|SheepShaver running Macintosh System 7.5.5]]
  1 KB (168 words) - 17:43, 29 June 2010
• A/UX
  After [[Steve Jobs]] left [[Apple]], they scrambled to put together a system that could compete with [[NeXT]]. Hearing that NeXT was going to enter the ...YSV filesystem, while later versions of A/UX used 4.2BSD's [[BSD Fast File System|FFS]].
  6 KB (846 words) - 15:40, 8 September 2021
• Unix/32V
  | caption = Logging into a 32v system ...e installation instructions [[Setting Up Version 1.0 of UNIX/32V Operating System]].
  4 KB (616 words) - 20:53, 14 January 2024
• 3BSD
  | caption = Logging into a 3 BSD/VM system ...r [[virtual memory]] system, that went from 32V's [[swapping]], to a paged system. Additionally all of the BSD tools from [[1BSD]] & [[2BSD]] on the [[PDP-1
  2 KB (340 words) - 14:44, 21 December 2023
• 4BSD
  | caption = Logging into a 4BSD system ...So this isn't very useful if you were hoping for some kind of multi-user system. The only 'good' thing is the 32v idle in simh-3.8-0 works well on this ve
  2 KB (299 words) - 15:18, 3 July 2022
• Power 6/32
  * TYPE SYSTEM NO REG REGS
  3 KB (361 words) - 17:01, 16 February 2024
• History of Zork
  .... ITS was designed to make software development easy. The designers of the system assumed that it would have a small, knowledgeable, friendly group of users, ...nd I maintained/hacked it; it was actually a legitimate test of a database system the group used for a research project.
  38 KB (6,681 words) - 16:32, 19 December 2018
• DEC indicator panel
  ...isk controller|RF11]], the [[RP11 disk controller|RP11]], and the [[DX11-B System 360/370 Channel to PDP-11 Unibus Interface|DX11]]; the [[RK11-C disk contro ...ge:DX11IndicatorPanel.jpg|thumb|left|300px|Indicator panel from a [[DX11-B System 360/370 Channel to PDP-11 Unibus Interface|DX11]]]]
  4 KB (612 words) - 20:33, 5 January 2024
• Apple Lisa
  While the Lisa's shipped with "[[Lisa Office System]]", they did have a few different OS's. *[[Lisa Office System]]
  2 KB (364 words) - 20:08, 4 October 2023
• XENIX
  ...[[Unix Seventh Edition|v7]], [[UNIX System III|SYSIII]], and later [[UNIX System V|SYSV]]. ...eloped on a DEC Virtual Address Extension (VAX) running the Virtual Memory System (VMS) and a PDP-11 running UNIX V7, albeit now using Microsoft's own in-hou
  12 KB (1,893 words) - 19:28, 21 October 2023
• OS/2
  ...es|IBM]] and [[Microsoft]] to put together the next generation [[operating system]] for the [[IBM AT]] and [[IBM PS/2|PS/2]] machines. ...king version of DOS. There was clearly a need for an 'advanced' operating system on the desktop, unfortunately in retrospect Microsoft had to get involved w
  22 KB (3,500 words) - 04:39, 13 January 2024
• NeXTSTEP
  NeXTSTEP was the [[operating system]] popularized by [[NeXT Computer, Inc|NeXT]], and is commonly thought of wi
  4 KB (609 words) - 13:05, 28 January 2023
• MacMiNT
  ...hat ran on top of [[Atari TOS|TOS]] (The Atari [[MS-DOS]] like [[operating system|OS]]) and provided basic Unix services. With the program aptly called JET (
  1 KB (233 words) - 13:59, 9 December 2022
• UNIX Sixth Edition
  | caption = Logging into a V6 UNIX system ...inicomputer OS's at the time. Many also still consider it to have been the system with the highest ratio of power to size, ever.
  7 KB (1,183 words) - 18:57, 29 February 2024
• Lions book
  ...umentation/Lions/book.pdf A Commentary on The Sixth Edition Unix Operating System] - PDF (not a scan)
  981 bytes (163 words) - 13:07, 8 April 2024
• MS-DOS
  ...s made popular by [[Microsoft]] for not only being the bundled [[operating system]] on the [[IBM-PC]] but also being available to the other clone [[OEM]]'s o DOS made use of the FAT [[file system]], and thus its popularity.
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• Gordon Letwin OS/2 usenet post
  IBM doomed OS/2 2.0, in terms of a successful desktop system, almost from system to some customers, even in it's infancy. The bad news is that
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• Running UNIX v6 in SIMH
  You want to verify the installation by running two file system checks, Now you are ready to mount(VII) the file system:
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• OS/8
  OS/8 was the primary [[operating system]] for the [[PDP-8 family|PDP-8]]. OS/8 is a [[single-user]] OS, used for su ...ripheral]] operations are handled without using [[interrupt]]s. The [[file system]] uses contiguous [[file]]s. [[Batch processing]] operation was supported b
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• MUSIC/SP
  ...SP is more popular for its inclusion of [[TCP/IP]] into the base operating system.
  519 bytes (80 words) - 03:21, 20 October 2018
• Running TOPS-20 V4.1 under SIMH
  DO YOU WANT TO REPLACE THE FILE SYSTEM ON THE PUBLIC STRUCTURE? DO YOU WANT THE DEFAULT SIZE FRONT END FILE SYSTEM? Y
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• Installing ITS on SIMH
  ...INSYS tape image. This is a DUMPER tape containing a minimal ITS bootstrap system. The contents of these may vary, however a usable one is available here: mi This tells the simulator that you are using a Y2K-aware operating system (which ITS is), so it can report the time correctly for the 21st century.
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• Incompatible Timesharing System
  ...ng System''' (usually '''ITS''') was an early [[time-sharing]] [[operating system]]; initially for the [[PDP-6]], and later for [[PDP-10]]'s. It was develope ...s one of the first OS's connected to the [[ARPANET]], and it was on an ITS system that the first versions of [[Emacs]], [[MACLISP]], [[Scheme]], and [[CLU]]
  12 KB (1,926 words) - 21:29, 8 February 2024
• ITS DDT Guide
  '''ITS DDT''' is the [[command processor]] for [[Incompatible Timesharing System|ITS]]; it is actually a [[debugger]]. DISOWN system call. Each bit controls a separate option.
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• Solaris
  ...m a [[BSD]]-based [[UNIX]] into a [[UNIX System V|SYSV]]-based [[operating system]]. However, when the change from [[SunOS]] to Solaris was announced, the ma Integrates Most Widely Used 32-bit System Software on a Single CD;
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• 386BSD
  | caption = Logging into a 386 BSD system The system (releases 0.0 and 0.1) was described in a series of 17 articles in [[Dr. D
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• Net/2
  ...is the common basis for all AT&T Unix ([[UNIX System III|SYSIII]], [[UNIX System V|SYSV]]), and all of the 32bit BSD releases. This release is intended for system developers and others who wish to
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• Top
  '''Top''' is a system [[process]] monitor. The cool thing about top is that it can display stats Top displays the top 15 processes on the system and periodi-
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• 4.3 BSD+NFS Wisconsin Unix
  | caption = Logging into a 4.3 BSD system For its age, a surprisingly lot runs on this 4.3BSD derived operating system. So far I've been able to build and run the following:
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• 4.3 BSD NFS Wisconsin Unix
  | caption = Logging into a 4.3 BSD Uwisc system
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• 4.3 BSD Tahoe
  | caption = Logging into a 4.3 BSD system ...ecific code, there by allowing 4.3 BSD to become a more portable operating system.
  7 KB (1,067 words) - 04:25, 10 December 2018
• 4.3 BSD Reno
  | caption = Logging into a 4.3 BSD system sites with UNIX/32V, System III, or System V source licenses
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• 4.3 BSD Quasijarus
  | caption = Logging into a 4.3 BSD system
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• TROPIX
  | caption = Logging into a TROPIX system ...sion 7]] [[Motorola 68000]] machine, they were able to clone out their own system. For a while the project seemed dead with the mainstream arrival of Linux,
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• TCP/IP
  .../IP is the most popular networking protocol suite of all time. [[Operating system|OSs]] and platforms that support TCP/IP are now basically ubiquitous, inclu ...- and configure the client's [[router]] - and will also add [[Domain Name System|DNS]] information. PPP also included VJ header compression support, while
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• Systems Network Architecture
  ...ed by IBM midrange [[AS/400]]'s and mainframe [[IBM System/370|370]]/[[IBM System/390|390]]'s to communicate over a [[LAN]] to [[FEP]]'s and other networked
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• 86-DOS
  | caption = Booting up the 86-DOS system ...or an [[Intel 8086|8086]] [[co-processor]] to execute the 86-DOS Operating System.
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• TROPIX Manual
  The TROPIX (pronounced "trópix") is an Operating System of 32 MOTOROLA 68010/20 processor. Since its beginning, the system was
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• Hercules
  ''Hercules is an open source software implementation of the mainframe System/370 and ESA/390 architectures, in addition to the new 64-bit z/Architecture That's right! Get a [[System/360]], [[System/370]] or [[System/390]] emulator on your home PC!
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• DECstation
  ...stems—the first released in 1978 as a [[word processor|word processing]] system, and the latter (more widely known) two both released in 1989. These compri
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• Multics
  ...discontinued = June, 1985 (discontinuation decision); October, 2000 (last system shut down) ...[[time-sharing]] [[operating system]] which has influenced every operating system created since; especially via [[UNIX]] (the name of which is a play on 'Mul
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• Qemu
  '''Qemu''' is a machine emulator & system virtualizer. ...d disk with qemu-img. Once your disk is ready then you can configure each system emulator with various flags.
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• Installing Windows 95 on Qemu
  I've found that you really need four key things for a good Qemu Windows 95 system: md system
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• Installing Ultrix 4.0 on SIMH
  Performing normal system tests. ULTRIX V4.0 (Rev. 160) System #3: Thu Apr 5 08:42:35 EDT 1990
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• Installing MS-DOS on Qemu
  qemu-system-i386 -hda msdos.disk -m 64 -L . -fda dos622_1.img -boot a qemu-system-i386 -hda msdos.disk -m 64 -L .
  2 KB (433 words) - 05:16, 3 May 2015
• Installing Windows NT 4.0 on Qemu(MIPS)
  ....com/install/WindowsNT4.0-MIPS/emulator/qemu-system-mips64el-12.3.zip qemu-system-mips64el-12.3.zip] <pre>qemu-system-mips64el.exe -hda nt4.disk -M magnum -L . -net nic -net user -cdrom winnt40
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• MIPS Magnum
  They were equipped with a NCR 53C94 fast/narrow [[Small Computer System Interface|SCSI]] [[chipset]]. ...ISC workstations that were supported by Windows NT all needed a [[FAT file system]] [[partition]], in which the bootstrap loader was stored.
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• Windows NT
  ...bit MS-DOS & Windows binaries with an improved 32bit OS/2 API & Windowing system. Microsoft hired Dave Cutler away from [[Digital]] to help with the implem ...ixes Rtl, Zw, and Nt. The Win32 API is considered it's primary API as the system services, security & console are all win32 applications.
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• Windows NT 3.1 HCL
  Windows NT[TM] operating system version 3.1 compatibility testing system. If your computer or device is not listed below, contact the
  144 KB (18,526 words) - 03:17, 17 December 2018
• Virtual PC
  ...Virtual PC was built for playing legacy video games under new [[operating system]]s, Hence the SoundBlaster 16 support. However once Microsoft realized that
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• Windows 95
  ...ows 95''' was [[Microsoft]]'s first consumer hybrid 32-[[bit]] [[operating system]]. While many of its internals were 16-bit, and a significant amount of it ...he time Windows 95 was first released, it was limited to the FAT 16 [[file system]], so [[partition]]s could not go beyond 2 gigabytes. OSR2 added support f
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• Win32s
  ...' version of [[Windows NT]], and there was no 'consumer' Win32 [[operating system]] at the time.
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• Mach
  Further work went into the [[OSKit]], a modular system to build kernels. Some of the [[operating system]]s that used Mach were [[NeXTSTEP]]/[[OPENSTEP]], [[Mach386]] & [[OSF/1]].
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• Doom
  Doom was written in [[C (language)|C]], on the [[NeXTSTEP]] Operating system, and ported to [[MS-DOS]] with the [[Watcom C]] compiler. It was built as
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• Operating system
  An '''operating system''' (often abbreviated to '''OS''') is a [[program]] (or set of programs) wh ...y did was to hide the low-level details of the [[device]]s attached to the system, so that users could use them by specifying higher-level operations (e.g. '
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• Amiga
  ...could allow accelerators, hard disks, scsi ports (etc) to be added to the system in a 'side car' like expansion. == The Operating System ==
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• VT100
  ...per second. Thus [[flow control]] was essential unless working with a slow system (e.g. an old [[minicomputer]]..). Xon/Xoff was the most common method for f
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• Virtual DOS Machine
  ...A complete virtual machine cosists of a 386 DX microprocessor hardware and system software. The emulation of an 8086 processor is the result of software usin ...not supported by the hardware and is not emulated, or write over operating system code).
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• Microsoft
  ...the lead to tell IBM that they had been working on a CP/M 'like' Operating system, and would sell it to IBM very cheaply on the condition that they could als
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• ProDOS
  ProDOS was an Operating System for the [[Apple II]] line of computers. The Apple IIe was already on the market when the new operating system (replacing DOS 3.3) was introduced. ProdDOS was up to eight times faster at
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• BASIC
  ...original system, was designated a 'GE-265'). The [[Dartmouth Time Sharing System]], where BASIC was greatly improved, ran on the later [[GE-635]].
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• BSD
  ...X]] version derived from [[Unix/32V]], including a real [[virtual memory]] system * [[4.1 BSD]] - These were mostly betas testing new [[file system]]s & the [[TCP/IP]] [[protocol]].
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• Microsoft Windows
  ..., beginning in the 1980s; the name was also given to the later [[operating system]]s (NT, etc).
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• Rogue
  ...given widespread release with the inclusion in the [[4.2 BSD]] [[operating system]].
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• Windows NT 3.5 HCL
  the Windows NT operating system, or that require a device driver supplied Austin Power System 60
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• Installing 32V on SIMH
  ...follow along from the guide [[Setting Up Version 1.0 of UNIX/32V Operating System]]
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• Setting Up Version 1.0 of UNIX/32V Operating System
  == Setting Up Version 1.0 of Unix/32V Operating System == The tape contains binary images of the system and all the user level programs, along with source and manual sections fo
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• A UNIX™ Operating System for the DEC VAX-11/780 Computer
  A UNIX™ Operating System for the [[Digital Equipment Corporation|DEC]] [[VAX-11/780]] Computer ...780 computer manufactured by Digital Equipment Corporation. The VAX-11/780 system provides 32-bit addresses and data. It uses the same input/output devices a
  49 KB (7,745 words) - 14:29, 6 May 2023
• Microsoft Windows-386 Being Delivered With Compaq 80386-Based PCs Through Dec. 31, 1987
  ...S-DOS applications a full 640 K of address space, depending upon the total system memory. ...Microsoft Windows 2.0 and the Presentation Manager in Microsoft Operating System/2 (MS OS/2)(Note).
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• UAE
  ...] programming language, and is available for a wide variety of [[operating system]]s.
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• Commodore A2090 Hard Disk Controller
  DH0: is an OFS (old file system) partition that has roughly 880K on it. Say you had a system like this:
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• Geos
  ...was dying, and it was time for Geos to transition to new platforms. A new system was written in assembler that used the Motif look & feel to give the [[IBM ...ll amount of time Geos was bundled with lower end systems, as it had a low system requirements. However their delays in giving out a developer SDK doomed th
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• Microport System V
  This was a port of System V r2 to the [[i286]] cpu. The material is dated 1987. The system was distributed in various sections.
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• Dell UNIX
  Dell UNIX System V Release 1.x (1988-1989) ...iprocessor and/or i860, some form of UNIX was the only realistic operating system. So Glenn started a UNIX development project, partly with some sharp “old
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• UNIX System III
  | caption = Logging into a SYSIII system | name = System III
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• Setting up the Third Berkeley Software Tape
  UNIBUS¹ disks, but such tapes are inherently rather system specific, and will not be discussed here. The tape consists The tape contains binary images of the system and all
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• Installing 3 BSD on SIMH
  file system: hp(0,0) Now we can go ahead and boot the system. Run the boot command from the = prompt, then you'll have to specify where
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• RT-11
  '''RT-11''' was an [[operating system]] for the [[PDP-11]]. Overall it has a very [[OS/8]] feel to it. The [[file system]] is like that of OS/8 in that [[file]]s are stored contiguously on the [[d
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• Installing FORTRAN v2 on RT-11
  *http://www.headcrashers.org/comp/rx01/fortran-iv/fortran-iv-v021-objecttime-system.img The FORTRAN compiler can compile system-specific OPEN and CLOSE
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• S-100
  ...and expansion of a system very easy. Most used [[CP/M]] as the [[operating system]] on them.
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• VM/370
  '''VM/370''' was the first [[operating system]] on the [[IBM System/370]] [[mainframe]] platform that supported [[virtual machine]]s. This was ...jones/proj/vm_reading/ibmrd2505M.pdf The Origin of the VM/370 Time-sharing System]
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• Installing VM/370 on Hercules
  06:20:41 AUTO LOGON *** OPERATOR USERS = 001 BY SYSTEM DMKCKP960I SYSTEM WARM START DATA SAVED
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• IBM AT
  ...along with the AT that it would support the next generation of [[operating system]]s, [[OS/2]]. The AT was also able to run [[Xenix]], along with a special
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• KWV11-C programmable real-time clock
  * [http://www.vaxhaven.com/images/0/01/EK-AXV11-UG-002.pdf LSI-11 Analog System User's Guide] (EK-AXV11-UG-002) - the KWV11-C is covered in Chapter 5
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• KDJ11-A CPU
  ...as used to upgrade [[PDP-11/23]] systems. (Confusingly, no DEC 'PDP-11/xx' system is specified as using the KDJ11-A.)
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• Logo
  ...OGO. In order to utilize the PDP-11/45 for other tasks, a new timesharing system called [[SITS]] was implemented, and 11LOGO was ported to that. After that
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• 32v 1m adb
  ...''' is a register name then the value of the register is obtained from the system header in '''corfil'''. The register names are those printed by the $r com On entry the following are set from the system header in the
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• 32v 1m clri
  system device. The i-node becomes allocatable.
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• 32v 1m cu
  '''Cu''' calls up another UNIX system, a terminal, or possibly a non-UNIX system. It manages an interactive conversation
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• 32v 1m df
  _f_i_l_e_s_y_s_t_e_m_s. If no file system is specified, the free space
  506 bytes (75 words) - 15:48, 26 October 2009
• 32v 1m dump
  dump - incremental file system dump default file system is dumped to the default tape.
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• 32v 1m icheck
  icheck - file system storage consistency check _I_c_h_e_c_k examines a file system, builds a bit map of used
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• 32v 1m iostat
  '''Iostat''' delves into the system and reports certain statistics system is executing in user mode, in `nice' (background)
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• 32v 1m mail
  a remote system, prefix '''person''' by the system name and exclamation mark (see '''uucp'''(1)).
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• 32v 1m mkfs
  mkfs - construct a file system _M_k_f_s constructs a file system by writing on the special file
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• 32v 1m mount
  mount, umount - mount and dismount file system _M_o_u_n_t announces to the system that a removable file system
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• 32v 1m ncheck
  A file system may be specified.
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• 32v 1m ps
  system process; 04: locked in memory (e.g. for physical in place of /_d_e_v/_k_m_e_m. This is used for postmortem system
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• 32v 1m pstat
  pstat - print system facts _P_s_t_a_t interprets the contents of certain system tables. If
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• 32v 1m restor
  restor - incremental file system restore The tape is read and loaded into the file system specified in _a_r_g_u_m_e_n_t. This should not be done lightly (see
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• 32v 1m sa
  sa, accton - system accounting on a large system /_u_s_r/_a_d_m/_a_c_c_t can grow by 100 blocks per
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• 32v 1m sh
  Print the accumulated user and system times for
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• 32v 1m time
  in the system, and the time spent in execution of the command. Times are reported in sec
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• 32v 1m tp
  system. The owner and mode are restored. If no
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• 32v 1m uucp
  system-name!pathname where `system-name' is taken from a list of system names
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• 32v 1m uudiff
  If a part of _r_e_m_o_t_e-_n_a_m_e is omitted (either the system or needed at the remote system, and at present is only
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• 32v 1m uux
  cute a command on a specified system and send standard out- put to a file on a specified system.
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• 32v 1m wait
  Because the _w_a_i_t(2) system call must be executed in the
  632 bytes (88 words) - 18:52, 26 October 2009
• 32v 1m who
  who - who is on the system indicative of when the system went down.
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• MSV11-J memory module
  On power-on, the system is frozen (via negation of the BPOK QBUS signal) while the entire memory is
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• Intel 80186
  ...struction of [[IBM-compatible PC|PCs]]. It was more popular for [[embedded system]]s due to its on-board hardware. However, the [http://en.wikipedia.org/wiki
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• MicroVAX 3100 series
  All models support [[Small Computer System Interface|SCSI]] for [[mass storage]], as well as [[Ethernet]] and several
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• Installing NetBSD ARC on Qemu
  === Install a Windows NT system partition === You'll need a Windows NT CD to now install a system partition. This is really simple. Just boot up Qemu like this:
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• Installing 4.3 BSD+NFS Wisconsin Unix
  Build root file system Check the file system
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• Installing 4.3 BSD NFS Wisconsin Unix
  Build root file system Check the file system
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• DEC Alpha
  [[Operating system]]s that supported Alpha included [[VMS|OpenVMS]] (previously known as OpenV .../system_reference/Alpha_System_Reference_Manual_Version_5_199205.pdf Alpha System Reference Manual - Version 5]
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• Installing 386BSD on BOCHS
  You will need the following to get a 386BSD system patched and installed: *A modern Linux system with iptables
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• Real Programmers Don't Use Pascal
  ...grammer? CP/M? God forbid -- CP/M, after all, is basically a toy operating system. Even little old ladies and grade school students can understand and use CP ...he system is through a keypunch. Some people claim there is a Time Sharing system that runs on OS/370, but after careful study I have come to the conclusion
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• Compiling Dungeon on RT-11
  ...ortran-iv/fortran-iv-v021-objecttime-system.img fortran-iv-v021-objecttime-system.img] system installation. LA36 DECwriter II and VT52 DECscope terminals
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• VAX 8650
  .../8600/EK-8600I-S1-001_VAX_8600_System_Upgrade_Procedure_May86.pdf VAX 8600 System Upgrade Procedure] (EK-8600I-S1-001)
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• TRS-80 Model II Family
  ...I/O and compatibility, it had a 16/32-bit Motorola MC68000 processor. This system wasn't very successful due to initial lack of 16-bit software. ...r the Model 16B and Tandy 6000 was Microsoft XENIX, a 16-bit Unix based on System III Unix.
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• 386BSD 0.1 announcement
  of a small yet powerful operating system. -- Thompson & Ritchie, "The UNIX Time-Sharing System", CACM 1974.
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• Installing Solaris 2.4 on Qemu SPARC
  ...-system-sparc-softmmu executable. At this point I'm assuming you are on a system that is capable of compiling Qemu. Otherwise, there is another tutorial av qemu-system-sparc -L . -M SS-5 -m 32 -bios ss5.bin -nographic -serial mon:telnet:127.0.
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• Computer Emulation Framework
  Available Bus/System Unit components are UNIBUS (with PDP-11 front panel), SOL-20, Altair 8800/I
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• BSD Daemon
  ...hirt artwork for O'Brien, who gave him some Polaroid snaps of a [[PDP-11]] system running [[UNIX]] along with some notions about visual puns having to do wit
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• DOS extender
  ...vironment to run under [[MS-DOS]]. MS-DOS is a '[[real mode]]' [[operating system]], but with some 'tricks' it's possible to run programs meant for [[OS/2]] ...ck in real mode. While this did work, it was far too slow for an operating system to use where you may need to switch several thousand times a second.
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• PC/370
  PC/370 is a simple [[System/370]] emulator that simulates a few mainframe environments, and provides th
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• AIX
  | caption = Logging into an AIX system | architecture = [[RT/PC]], [[RS/6000]], [[IBM 386]], [[System/370]]
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• Interdata 8/32
  ...struction set architecture|ISA]] was roughly modelled on that of the [[IBM System/360]] [[mainframe]]. It had higher performance than its very similar 'littl ...); the machine itself was delivered at the end of April 1977. By June, the system was working reasonably well.
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• Minix
  Minix is a small [[microkernel]] based [[operating system]] for teaching OS concepts in colleges. Over its life it has been ported t
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• Linux 0.00
  # The second is the code of the system # The third is the system of data
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• Linux 0.11
  ...x 0.11 also started the hooks for the i387 math emulator, while the [[file system]] was still restricted to only [[Minix]] file systems. fully System V compatible. LINUX has been written from scratch, and
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• Linux 0.12
  subset of System V and POSIX functionality. LINUX has been written of the functionality of a System V.3 kernel. For example, various
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• Linux 0.95a
  subset of System V and POSIX functionality. LINUX has been written of the functionality of a System V.3 kernel. For example, various
  6 KB (879 words) - 01:25, 20 December 2018
• Linux 0.01
  I downloaded a copy from [http://oldlinux.org/Linux.old/Linux-0.01/sources/system/linux-0.01.tar.Z here]. keyboard and serial lines), and some of the system calls are not yet
  13 KB (2,235 words) - 01:24, 20 December 2018
• Linux 0.02
  system is able to compile "as-is" and has been known to work. Heh. set it up if you want to run it, so it is not yet a standalone system
  4 KB (647 words) - 01:24, 20 December 2018
• Linux 0.99pl9
  ...y of 1994, with many new features like Ethernet, frame buffer and X Window System support arriving with 0.9pl5 later that year. Further efforts were made to
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• DZ11 asynchronous serial line interface
  ...istribution panel for the EIA version was part of DEC's modular back-panel system. The [[address]]es shown are for the first DZ11 in a system (provided that there are no other devices in the [[floating device address
  5 KB (730 words) - 02:26, 19 February 2023
• Installing v7 on SIMH
  file system: hp(0,0) ...rebuilding the kernel, logging in as root, and as dmr, sending and reading system mail, and enabling the V7 instance and SimH to allow multiple sessions from
  6 KB (911 words) - 01:10, 22 July 2020
• Setting Up Unix - Seventh Edition
  The system as distributed contains binary images of the system and all the user level programs, along with source
  27 KB (4,414 words) - 02:56, 17 January 2023
• UNIX Fifth Edition
  | caption = Logging into a v5 unix system ...ks, e.g. limiting the number of [[process]]es that can be in an 'exec()' [[system call]] at any time).
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• Installing UNIX v6 (PDP-11) on SIMH
  dep system sr 173030 sim> dep system sr 173030
  6 KB (1,109 words) - 19:03, 10 March 2021
• Setting up UNIX - Sixth Edition
  The UNIX Time-Sharing System The UNIX I/O System
  29 KB (3,738 words) - 02:56, 17 January 2023
• Programming in C - A Tutorial
  ing system you run on, and that you have programmed in some system programming and bit-manipulation, octal numbers are
  71 KB (8,839 words) - 02:18, 17 December 2018
• Zork hints
  Organization: Jett Unix System, Huntsville, AL
  23 KB (3,755 words) - 03:51, 17 December 2018
• A news
  A news relied on [[Unix System 7]]'s messaging functions and UUCP to create a global news network.
  576 bytes (92 words) - 21:46, 18 December 2018
• Installing NetBSD 1.2 on the SIMH MicroVAX II
  Performing normal system tests. Performing normal system tests.
  17 KB (2,338 words) - 21:14, 10 April 2012
• RA81 Disk Drive
  The RA81 is a self-contained disk drive with built-in cooling system and [[direct current|DC]] [[power supply]]. An RA81 disk drive subsystem is
  4 KB (542 words) - 03:16, 31 August 2023
• Installing NetBSD 5.0.2 on the SIMH MicroVAX II
  Performing normal system tests. c: System (/etc) No
  8 KB (1,125 words) - 02:02, 18 November 2010
• NetBSD 0.8 announcement
  NetBSD is a new system, based heavily on 386BSD 0.1, with surrounding what we consider a wonderful operating system,
  34 KB (5,687 words) - 18:11, 16 December 2018
• NetBSD 0.9 announcement
  cause "w" to panic the system (cgd) Just like the rest of the system. (brezak)
  29 KB (4,794 words) - 18:15, 16 December 2018
• FreeBSD
  <blockquote>FreeBSD is a UNIX-like operating system for the i386, amd64, IA-64, arm, MIPS, powerpc, ppc64, PC-98 and UltraSPARC
  2 KB (261 words) - 22:54, 3 January 2021
• FreeBSD 1.0 EPSILON announcement
  Substantial changes to the SCSI system from Julian Elischer.
  3 KB (486 words) - 15:58, 16 December 2018
• Darwin
  Darwin 0.x can be built using a Rhapsody/OS X Server 1.0 binary system as a starting point. However when it comes to emulation and physical hardw
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• Darwin 6.0.1 Release notes
  * Mac OS X v10.2 operating system improvements /System/Installation/apple_binary/ on the Install CD image.
  3 KB (409 words) - 17:57, 13 January 2024
• Darwin 1.4.1 Release notes
  * Mac OS X v10.1 operating system improvements /System/Installation/apple_binary/ on the Install CD image.
  3 KB (455 words) - 06:05, 16 December 2018
• Darwin 7.0.1 Release notes
  When preparing your system to install Darwin, it is a good idea If you have an OS X system with a CD burner, you can burn the CD
  12 KB (1,841 words) - 06:06, 16 December 2018
• Darwin 8.0.1 Release notes
  When preparing your system to install Darwin, it is a good idea If you have an OS X system with a CD burner, you can burn the CD
  12 KB (1,699 words) - 06:06, 16 December 2018
• 386BSD 0.0
  ...moment, 386BSD comes up single user, and requires manual starting of the system daemons, as well as filesystem checks. In use, one would minimally wis
  4 KB (629 words) - 17:48, 9 March 2021
• 386BSD 0.0 announcement
  providing a broadly accessible system, aberrations, such as require this system to teach, even though it might be to
  25 KB (3,920 words) - 05:43, 15 July 2019
• DLV11-E asynchronous serial line interface
  ...[[halt]] the [[Central Processing Unit|CPU]], or [[bootstrap|re-boot]] the system, when a '[[asynchronous serial line|break]]' is seen; it can also send a 'b
  3 KB (489 words) - 01:18, 17 February 2023
• DLV11-J asynchronous serial line interface
  ...[[halt]] the [[Central Processing Unit|CPU]], or [[bootstrap|re-boot]] the system, when a '[[asynchronous serial line|break]]' is seen. All lines can send a
  4 KB (684 words) - 01:20, 17 February 2023
• FreeBSD 1.0 GAMMA announcement
  supported operating system with *source code* is a pretty good deal!).
  10 KB (1,541 words) - 15:59, 16 December 2018
• Seagate ST1144A
  |Master in two drive system |CLOSED | CLOSED| |Slave in two drive system |OPEN | OPEN |
  25 KB (3,017 words) - 18:47, 13 January 2024
• UnixWare
  | caption = Logging into a UnixWare 7.1.3 system
  2 KB (280 words) - 22:15, 21 October 2018
• QNX
  ...in the early 1980s, it is now a commercial product, targeted at [[embedded system]] uses.
  2 KB (337 words) - 02:49, 21 February 2024
• DEMOS
  | caption = Logging into a DEMOS 3.0 unix system
  1 KB (216 words) - 22:52, 3 February 2024
• CM 1700
  ...unctional communication controller for controlling I / O devices through a system interface ORs were Firmware. As a system interface in a model CM 1700 was used interface OR, providing compatibility
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• 2.9BSD
  | caption = Logging into a 2.9BSD system ...t rely on a prior [[UNIX Sixth Edition|V6]] or [[Unix Seventh Edition|V7]] system installation.
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• KDF11-B CPU
  ...ng-edge.com/micropdp11-volume1_system_cpus-EK-245AA-MG-001.pdf KDF11-B CPU System Maintenance] (EK-245AA-MG-001)
  3 KB (507 words) - 10:58, 29 March 2022
• RD54
  spindle from powering up when system power is applied. This feature rotary voice coil actuator and a closed loop servo system utilizing a
  19 KB (2,330 words) - 14:58, 5 January 2024
• RX33 Flexible Disk Drive
  [[image:decmateIII.jpg|thumb|right|300px|[[DECmate III]] with RX33 in the system box underneath the monitor - the expansion box to the right contains an RX5 ''The RX33 drive can provide system mass storage, backup capability, and serve as a data interchange device. It
  4 KB (607 words) - 15:51, 15 September 2023
• TU10 DECmagtape
  % = Only at end of device bus, M903 cable otherwise; with a single drive system, may be in either slot<br> .../tu10/DEC-00-TU10M-D_TU10_Master.pdf DEC-00-TU10M-D TU10 DECmagtape Master System Manual] - covers the master functional unit in drives configured with it
  9 KB (1,330 words) - 01:11, 10 February 2024
• TU58 DECtape II
  * [[VT103]] (as system & data device) * [[PDP-11/03]] (as system & data device)
  3 KB (373 words) - 03:13, 23 August 2022
• DECtape II
  ...low-performance [[random access]] [[magnetic tape]] [[secondary storage]] system, proprietary to [[Digital Equipment Corporation|DEC]]. They were effectivel
  1 KB (166 words) - 16:04, 30 May 2022
• TU81 Streaming Tape Unit
  | interface = [[Low End System Interconnect]]
  3 KB (409 words) - 20:32, 23 April 2024
• Uuencoded
  * Encode a file so it can be mailed to a remote system.
  4 KB (650 words) - 01:34, 17 December 2018
• TPA-11/580
  ...procedures. Its operating system is the VAX/VMS virtual memory management system that can use up to 4 GBs of memory and can work with intrinsically infinite :* ''3 2-bit, high-speed, asynchronous system bus:
  4 KB (587 words) - 00:38, 2 January 2024
• Installing NetBSD 5.1 on the SIMH MicroVAX II
  Welcome to sysinst, the NetBSD-5.1 system installation tool. This upgrade an existing NetBSD system, with a minimum of work.
  3 KB (379 words) - 16:13, 13 March 2013
• Stacker
  ...e. The big limitation of stacker is that it only dealt with the [[FAT file system]], and the largest compressed volume thusly could be 2GB. Stacker was big ...s limited to FAT disks, and the installation required the OS/2 [[operating system]] be on a FAT disk.
  1 KB (168 words) - 15:18, 7 March 2021
• S390x-softmmu
  '''S390x-softmmu''' is a mode in [[Qemu]] to emulate an [[IBM System/390]].
  403 bytes (62 words) - 23:00, 18 December 2018
• 4.1 BSD
  | caption = Logging into a 4.1 BSD system ...T the name was changed; AT&T feared confusion with [[Unix SYSV|AT&T's UNIX System V]].
  4 KB (538 words) - 18:23, 17 June 2018
• SIXBIT
  '''SIXBIT''' is a predecessor encoding system to [[ASCII]]; it too supported encoding various glyphs (written forms such
  1 KB (174 words) - 23:15, 24 April 2024
• OS/360
  ...created by [[International Business Machines|IBM]] for the then-new [[IBM System/360]] line. It is perhaps best known now for being the project that prompte * BOS/360 (Basic Operating System)
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• UNIX V6 memory layout
  ...agement]] of the host [[PDP-11]] system, is fairly simple. The [[operating system]]'s [[kernel]] (both [[instruction]]s and data) permanently occupies low ph The details of how the kernel of UNIX V6 uses the main memory of the system is fundamentally different between the two types of PDP-11 Memory Managemen
  7 KB (1,161 words) - 15:20, 8 July 2023
• Upgrading UNIX Sixth Edition
  ...stributed with [[binary]] (both [[user]] [[command]]s, and the [[operating system]]) for a [[PDP-11/40]]. Since the layout of addresses in the system is somewhat peculiar, and
  6 KB (1,002 words) - 13:02, 4 March 2023
• KD11-E/EA microcode
  | 003 || 17-LL || 000 || Initialize system for 150msec
  31 KB (3,760 words) - 05:02, 5 November 2022
• Installing 4.0 BSD on SIMH
  file system: hp(0,0) WARNING: preposterous time in file system -- CHECK AND RESET THE DATE!
  5 KB (848 words) - 07:12, 2 February 2016
• Setting up (BSD 4.0) the Fourth Berkeley Software Tape
  inherently rather system-specific, and will not be discussed The tape contains binary images of the system and all
  57 KB (8,582 words) - 03:00, 17 January 2023
• Bug fixes and changes in 4.1bsd
  in the Berkeley system for the VAX between the + Performance of the system under heavy paging load has
  39 KB (5,307 words) - 05:01, 11 December 2018
• Xv6 homework 6
  Chapter 5 of IA-32 Intel Architecture Software Developer's Manual, Volume 3: System programming guide; you can skip sections 5.7.1, 5.8.2, and 5.12.2. Be aware ...v6, set a breakpoint at the beginning of syscall() to catch the very first system call. What values are on the stack at this point? Turn in the output of pri
  1 KB (207 words) - 15:57, 30 December 2018
• INTEL 80386 PROGRAMMER'S REFERENCE MANUAL
  After a customer purchases any system hardware or software product, aspects of system design and implementation. In just three to ten days a
  890 KB (107,817 words) - 03:20, 3 January 2024
• Compiling KLH10
  ...perating system]], but there was an annoying bug: the reported time of the system looped endlessly over three hours, and did not seem to keep proper time. Wa ...n's tutorial [http://victor.se/bjorn/its/ 'Some notes on setting up an ITS system']
  7 KB (1,201 words) - 06:26, 16 December 2018
• Installing RT-11 5.3 on SIMH
  install your RT-11 system, then store it in a safe place. back up your distribution disk and build a working system disk which
  8 KB (1,219 words) - 00:21, 11 June 2012
• IBM OS2 1.0 announcement
  "IBM Operating System/2 Standard Edition","IBM Announce",04-2-1987 The IBM Operating System/2(TM) Standard Edition
  50 KB (7,113 words) - 03:35, 17 December 2018
• Inside OS/2
  1. MS OS/2 (Computer operating system) I. Title. Chapter 8. File System Name Space
  627 KB (92,395 words) - 03:42, 17 December 2018
• 386 DOS-Extender
  ...uld create a 32-bit [[program]] that would run on an unmodified [[MS-DOS]] system equipped with a [[Intel 80386|386]] [[CPU]]. It was significantly easier to
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• NORD-1
  | operating system = [[SINTRAN|SINTRAN I]] or [[NORD-TSS|Nord TSS]] In 1969 a NORD-1 was used in the world's first radar-based anti-collision system on the Wilh. Wilhelmsen ship M/S [http://www.faktaomfartyg.se/taimyr_1968.h
  1 KB (177 words) - 00:33, 3 May 2022
• Installing 2.9 BSD on SIMH
  A dump of the root file system file system: rl(0,0)
  6 KB (835 words) - 13:57, 29 May 2020
• Installing NetBSD 6.1.5 Sparc64 on Qemu
  qemu-system-sparc64.exe -cdrom NetBSD-6.1.5-sparc64.iso -net nic,model=ne2k_pci -net us ...disk intensive. It's best to wait for it to complete, then try to use the system. Lost interrupts appear as: "cmdide0:0:0: lost interrupt".
  2 KB (292 words) - 06:13, 15 January 2015
• Installing NetBSD 6.1.5 Sparc on Qemu
  qemu-system-sparc.exe -cdrom NetBSD-6.1.5-sparc.iso -net nic -net user -hda netbsd-615-
  1 KB (200 words) - 06:12, 15 January 2015
• Installing Ultrix 4.5 on SIMH
  ; Host System : DEC MicroVAX 3800 ; Operating System : DEC Ultrix v4.5
  44 KB (6,192 words) - 09:30, 29 September 2023
• Netbooting a VAXstation
  ...h is probably not required if you try to netboot an original DEC operating system like VMS or ULTRIX ...ers lower-case except the .SYS at the end, which must be upper case. On my system it looks like this:
  12 KB (1,853 words) - 20:06, 10 December 2015
• LSI-11
  ....bitsavers.org/pdf/dec/pdp11/1103/Titelbaum_LSI-11_1975.pdf The LSI-11 - A System Microcomputer]
  3 KB (411 words) - 22:06, 20 December 2023
• Installing 4.1 BSD on SIMH
  file system: hp(0,0) WARNING: preposterous time in file system -- CHECK AND RESET THE DATE!
  7 KB (1,100 words) - 07:32, 2 February 2016
• 4.2BSD driver for DEC Deuna Ethernet board
  X * record. System will initialize the interface when it is ready X#define FC_RDSYSID 0x12 /* Read system ID parameters */
  35 KB (6,389 words) - 02:51, 16 January 2024
• Installing 4.1c BSD on SIMH
  miniroot: Unix Fast File system (little-endian), last mounted on /mnt, fsck depends on them to recover this file system.
  13 KB (2,077 words) - 16:30, 7 August 2017
• UNIX* System V and 4.1C BSD
  UNIX* System V and 4.1C BSD This paper compares System V (the UNIX system which
  113 KB (13,419 words) - 02:06, 17 December 2018
• Clearpoint Q-RAM 11
  There does not seem to be any component location identification system on the card, so one has been created for use here. Looking at the card from
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• Camintonn CMV-504
  "''SMS 1000 Microcomputer System Models 40, 41 and 50 OEM Manual''", February 1987, Scientific Micro Systems
  4 KB (736 words) - 02:48, 14 December 2020
• MM11-L core memory
  ...C/DEC-11-HMELA-B-D_ME11-L_Core_Memory_System_Manual.pdf ME11-L core memory system manual] (DEC-11-HMELA-B-D) ...ls/dec-me-11-l-core-memory-system-engineering-drawings/ ME11-L core memory system engineering drawings]
  5 KB (841 words) - 07:14, 25 March 2022
• MM11-U core memory
  ...popular, and fairly common, 32 Kbyte [[core memory|core]] [[main memory]] system for the early [[PDP-11]] [[UNIBUS]] machines. An MM11-U was composed of a f ...board set of the MM11-U (less the M8293) is also used in the [[MJ11 memory system]], and (with the 19-bit wide H217-B variant of the core stack) in the [[MG1
  6 KB (1,023 words) - 04:53, 22 October 2021
• DEC alphabet
  It stops at 'V' because [[FLIP CHIP]]s, and later boards in that system, only had 18 contact pads on the edge fingers. With the later [[Berg connec
  720 bytes (132 words) - 15:42, 8 August 2023
• M9301 ROM
  If S1-2 is 'off', the system will power-up normally; if 'on', the CPU will obtain its new PC/PS pair fro
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• KL10
  | operating system = [[TOPS-10]], [[TOPS-20]], [[Incompatible Timesharing System|ITS]], [[WAITS]], [[TENEX]], [[TYMCOM-X]] | price = US$250K (CPU), US$600K-1.2M (system)
  11 KB (1,737 words) - 13:06, 2 April 2024
• KA10
  | caption = KA10-based PDP-10 system | physical address = 18 bits (normal), 19/20 ([[Incompatible Timesharing System|ITS]] paging box), ?? ([[TENEX]] paging box)
  2 KB (298 words) - 07:28, 6 September 2023
• KI10
  | operating system = [[TOPS-10]], [[TENEX]], [[TYMCOM-X]] | price = US$200K (CPU), US$500K-1M (system)
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• BM873 ROM
  ...can be removed to disable the 'default address' feature. This is that on a system configured to fetch the new PS/PC from ROM on power-on - a capability which
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• SS-50 bus
  ...the original. It was designed for the [[STWPC S/09]], a paged-memory 6809 system. ...essing a reset button, the one-shot pulses the Reset line which resets the system
  6 KB (1,084 words) - 16:55, 16 February 2024
• KDJ11-B CPU
  .../1173/EK-247AA-MG-001_KDJ11-B_CPU_System_Maintenance_Nov88.pdf KDJ11-B CPU System Maintenance] (EK-247AA-MG-001)
  2 KB (391 words) - 16:40, 6 February 2024
• KDJ11-E CPU
  * ''KDJ11-E CPU System Maintenance Manual'' (EK-403AA-MM-001) - not available online
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• KTJ11-B UNIBUS adapter
  ...//www.bitsavers.org/pdf/dec/pdp11/1184/EK-1184E-TM-001_Dec87.pdf PDP-11/84 System Technical and Reference Manual] (EK-1184E-TM-001) - the KTJ11-B is covered
  6 KB (1,060 words) - 16:35, 6 February 2024
• Private Memory Interconnect
  ...ies can co-exist on the same physical bus; for example, in a [[PDP-11/83]] system, the CPU will use PMI to talk to the main memory, but DMA devices on the QB
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• EIA RS-232 serial line interface
  ...‎]] at the electrical level, with an [[Non Return to Zero|NRZ]] encoding system; the closely related descendant [[EIA RS-422 serial line interface]] uses [
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• KT11-B Paging Option
  It also allows the system to use up to 248 Kbytes of memory (the maximum allowed by the [[UNIBUS]]), ...atures prevent any user from interfering with the overall operation of the system. It does this by providing two modes for the CPU, 'User' and 'Exec', with c
  15 KB (2,571 words) - 22:23, 11 October 2022
• PDP-11 Memory Management
  ...space''' capability; this increases the memory available to the operating system, and each user, to 128 Kbytes. Since immediate operands and absolute addres
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• UNIBUS map
  ...of DMA devices on the UNIBUS during the [[bootstrap]] process, and initial system startup.
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• Virtual memory
  ...age]], usually [[disk]]), the computation is stopped while the [[operating system]] arranges to have the missing memory contents made resident; once they are ...al memory, and missing items are automatically brought in by the operating system when they are needed. To do this, the user's memory has to be divided into
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• KA11 CPU
  .... They all plugged into a custom [[backplane]], formed from three 4-slot [[system unit]]s wired together into one monolithic unit. As previously mentioned, the CPU consisted of two and a half quad system unit backplanes (the two otherwise-unused slots were [[Small Peripheral Con
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• KT11-B Technical Manual
  ...refer to the UNIBUS '''from''' the KT11-B to the devices and memory of the system.
  31 KB (4,983 words) - 18:22, 2 July 2023
• TM11 magtape controller
  ...ntrol‎‎|M7821]]); all of which plug into a custom hex-high four-slot [[system unit]] [[backplane]] (for a [[BA11 mounting boxes|BA11]], etc box), [[DEC p ...p://www.bitsavers.org/pdf/dec/magtape/tm11/TM11_Manual.pdf TM11 DECmagtape system] (DEC-I1-HTMAA-D-D)
  10 KB (1,388 words) - 02:36, 10 February 2024
• KDF11-U CPU
  ...tected in memory]] - to which the response is apparently to power-fail the system! .../1124/EK-11024-TM-001_PDP11_24_System_Technical_Manual_Jun81.pdf PDP-11/24 System Technical Manual] (EK-11024-TM-001) - the KDF11-U is covered in Chapters 3-
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• TU16 Tape Transport
  ...pe_Drive_System_Maintenance_Manual.pdf EK-TU16-MM-002 TU16/TM02 tape drive system maintenance manual]
  3 KB (466 words) - 22:56, 8 February 2024
• TeleVideo TPC-1
  ...le-sided double-density [[floppy drive]]s. It ran the [[CP/M]] [[operating system]].
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• Installing UNIX Sixth Edition
  ...h contained a number of small stand-alone programs, followed by the [[file system]]s, but the similarity is purely superficial; the details of the process ar ...ed from block 0, or block 1, depending on the tape drive/controller on the system). That is then used to load an intermediate stage, a tape to disk copier (n
  6 KB (1,004 words) - 05:35, 27 March 2024
• Installing Unix Seventh Edition
  ...h contained a number of small stand-alone programs, followed by the [[file system]]s, but the similarity is purely superficial; the details of the process ar ...ed from block 0, or block 1, depending on the tape drive/controller on the system). That is used to load a stand-alone second-stage bootstrap program, which
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• Installing UNIX Sixth Edition on Ersatz-11
  ...ply wants to be able to say one has done it, or whether one wants a usable system.
  2 KB (280 words) - 03:45, 3 March 2019
• Running an LSI-11 from UNIX V6
  ...rface is currently in the serial line driver (dl.c), and not in the stty() system call code (since moving it there would mean adding entries in cdevsw[], and
  3 KB (471 words) - 18:25, 2 July 2023
• Ersatz-11
  *[http://www.dbit.com/ Ersatz-11 PDP-11 Emulation System]
  868 bytes (126 words) - 18:13, 9 January 2024
• RX01/02 floppy drive
  [[Image:rx01.jpg|250px|thumb|left|An RX01 floppy drive system]] [[Image:rx02.jpg|thumb|right|An RX02 floppy drive system]]
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• MASSBUS
  ...to things connected to the MASSBUS (other than the controller in the host system). A single MASSBUS can contain up to 8 devices. The [[PDP-15]] could also connect to MASSBUS devices via the [[UNICHANNEL 15 System|UC15 Unichannel]], but this used a [[PDP-11/05]] acting as a slave to the P
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• DECtape
  '''DECtape''' was a low-cost, low-capacity tape [[magnetic storage]] system intended for storage of small data entities (e.g. programs).
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• Core memory
  ...mplex, but it avoided the considerable engineering associated with the oil system, which acceptable perhaps in a [[mainframe]], but infeasible for a [[minico ...rson W. Pugh, ''Memories That Shaped an Industry: Decisions Leading to IBM System/360'', MIT Press, Cambridge, 1984
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• 2.10BSD
  * Conversion of the entire system to a 4.3BSD structure, including ** 4.3BSD system calls
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• Over the back
  In a few cases (e.g. [[MM8-E Memory System]] [[main memory]]), instead of headers, the back edge of the boards ''also'
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• MJ11 memory system
  The '''MJ11 memory system''' was a [[core memory|core]] [[main memory]] system for the [[PDP-11/70]]. It was 32 bits wide, to interface to the -11/70's Ma * [[MK11 memory system]]
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• MK11 memory system
  The '''MK11 memory system''' was a [[Dynamic RAM|DRAM]] [[main memory]] system for the [[PDP-11/70]]. It was 32 [[bit]]s wide, to interface to the -11/70' An MK11 system contained six [[DEC card form factor|hex]] control modules (of four differe
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• Time-sharing
  ...e [[user]]s at the same time - as opposed to the earlier [[batch operating system]]s, in which users submitted '[[job]]s', which were run, after which the re ...dern sense). This eventually led to MIT building [[Compatible Time-Sharing System|CTSS]], the first time-sharing OS to go into production service.
  3 KB (491 words) - 02:53, 23 January 2023
• Mainframe
  ...rocessor]]s), physical size became a disadvantage, since it put a limit on system speeds, due to speed of light delays. Mainframes continued to exist, but be ...ntinue to exist, their place is being taken by large groups of [[commodity system]]s networked together; typically [[personal computer]]s.
  1 KB (171 words) - 01:38, 16 December 2018
• Personal computer
  ...on at a time (even though it may be running a [[time-sharing]] [[operating system]] for technical reasons).
  2 KB (338 words) - 19:13, 12 June 2023
• Disk
  '''Disk''' storage was, until recently, the primary form of high-speed on-line [[secondary storage]] for computers. Disks replaced an earlier form of rota ...led or removed in a drive, in a process called '''mounting''' a pack. So a system could have multiple packs (for backup purposes, or for infrequently needed
  4 KB (699 words) - 14:20, 16 July 2023
• Microcode
  ...n set. This was originally, and most influentially, displayed by the [[IBM System/360]] line of computers. This too is now not common, since it is not usual ...ing was done in [[assembly language]], this allowed people to upgrade to a System/360 machine without discarding their investment in software for the earlier
  6 KB (853 words) - 14:25, 22 January 2024
• Virtual address
  When running a [[time-sharing]] [[operating system]], the [[memory management]] [[hardware]] provides mapping of memory addres
  963 bytes (147 words) - 21:35, 15 December 2018
• Gray code
  A '''Gray code''' (named after their inventor) is a coding system in which 'neighbour' codes only differ in one bit. In a classic binary code
  2 KB (245 words) - 21:29, 22 June 2019
• BSD Fast File System
  ...these, so successfully that the FFS and its descendants are still the file system of most Unix descendants today. The original Unix file system was too simple to be able to get good performance out of the disks of the B
  11 KB (1,759 words) - 19:20, 12 June 2023
• Unix Eighth Edition
  ...load. It is not a complete distribution tape, just a tar file of a running system, made by Dan Cross. Boot messages of a v8 system running in SimH:
  4 KB (578 words) - 18:00, 12 December 2023
• Unix Ninth Edition
  .... It is not a complete distribution tape, just a [[tar]] file of a running system, made by Norman Wilson.
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• MB20 core memory
  The '''MB20''' was a [[core memory|core]] [[main memory]] system for the later [[PDP-10]]s, principally the mid-period [[KL10]]. An MB20 con
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• DH11 asynchronous serial line interface
  |System Control Register || DHSCR || 760020 The [[address]]es shown are for the first DH11 in a system; additional ones are normally set to be at 760040, 760060.
  10 KB (1,443 words) - 02:27, 19 February 2023
• System unit
  A '''system unit''' is a standard modular [[backplane]] from [[Digital Equipment Corpor The initial system units were [[DEC card form factor|hex]] height, four-slot assemblies. (Some
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• DR11 parallel interface
  * [[DR11-B parallel interface|DR11-B]]: DMA, 4-slot [[system unit]]
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• DR11-B parallel interface
  The [[address]]es shown are for the first DR11-B in a system; additional ones are normally set to be at 772430, 772450, 772470, etc. ...a number of smaller [[FLIP CHIP]]s which were installed in custom 4-slot [[system unit]] [[backplane]].
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• KD11-E CPU
  ...point]] unit or the [[KK11-A Cache Memory|KK11-A]] [[cache]]; a PDP-11/34 system needed the upgraded [[KD11-EA CPU]] for that.
  5 KB (791 words) - 02:23, 6 December 2022
• KY11-LA Operator's Console
  * [http://bitsavers.org/pdf/dec/pdp11/1134/1134_UsersManual.pdf PDP-11/34 system user's manual] - the KY11-LA is covered in Chapter 2
  2 KB (358 words) - 18:29, 3 April 2022
• Bus grant
  ...e which device will get the bus first. There are many ways to do this; the system might use [[bus grant line]]s, or there might be some sort of distributed a
  1 KB (194 words) - 18:42, 11 November 2019
• Bus grant line
  In other words, when there are conflicting requests for the bus, this kind of system prioritizes the requests based on the devices' location on the bus; the one
  2 KB (281 words) - 01:01, 14 February 2023
• PDP-6
  | operating system = [[TOPS-10|Monitor]], [[Incompatible Timesharing System|ITS]], [[WAITS]], [[JOSS|JOSS II]] | price = US$120K (CPU), US$300K (system)
  3 KB (510 words) - 07:28, 6 September 2023
• VAX CPUs, Modules, Part Numbers and Firmware
  ! System name | [[KA410 MicroVAX 2000/VAXstation 2000 System Module|KA410-A]]
  9 KB (877 words) - 22:15, 25 August 2023
• MicroVAX 2000
  The MicroVAX 2000 system has a DEC423 converter attached to the back of the system box and is mounted over the video and printer ports. ...nnected to a [[KA410 MicroVAX 2000/VAXstation 2000 System Module|KA410-A]] system module, which has 2MB on-board memory.
  5 KB (595 words) - 17:41, 13 January 2024
• MicroVAX 3300/3400
  ...es/c/c6/EK-VAXCT-CG-006.pdf VAXcluster Systems - Guidelines for VAXcluster System Configurations] (EK-VAXCT-CG-006)
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• SIMH/Draft
  ...tems can network directly onto the [[Internet]], if the emulated operating system supports it, like BSD or [[VMS]].
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• VAX 8200
  The '''VAX 8200''' is a mid-range [[VAX]] uni-processor system built around the [[VAX Bus Interconnect|VAXBI]] [[bus]]; it can support an
  2 KB (208 words) - 23:08, 28 March 2024
• VAX 8300
  ...mid-range [[VAX]] dual-[[Central Processing Unit|CPU]] [[multi-processor]] system built around the [[VAX Bus Interconnect|VAXBI]] [[bus]]; it can support an
  2 KB (210 words) - 23:10, 28 March 2024
• VAXstation 2000
  <div id="ref_1">[1] VAXstation 2000 System Guide. EK-V2000-SG-001</div> * [https://manx-docs.org/collections/antonio/dec/v2000sg1.pdf VAXstation 2000 System Guide] (EK-V2000-SG-001)
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• VAXstation 3100 Model 30/40
  <div id="ref_2">[2] VAXstation 3100 Model 30 Desktop-VMS Basic System Guide. EK-259AA-UG-001</div>
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• VAXstation 4000 Model 60
  The '''VAXstation 4000 Model 60''' system is a compact desktop [[workstation]] using a [[microprocessor]] [[VAX]] [[m ...ons/mds-199909/cd1/vax/pmarioma.pdf VAXstation 4000 Model 60 Owner’s and System Installation Guide] (EK–PMARI–OM.A02)
  2 KB (171 words) - 16:34, 15 January 2024
• VAXstation 4000 VLC
  ...station 4000 VLC''' ('Very Low Cost'; reputedly also named the 'Model 30') system is a single-[[printed circuit board|board]] [[microprocessor]] [[VAX]] [[wo
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• System Module
  [[Image:PDP-6 mod end.jpg|thumb|right|250px|A System Module used in a [[PDP-6]]; this example has had its [[transistor]]s salvag '''System Modules''' (originally named '''System Building Blocks'''; the name was changed about 1961) were a [[Digital Equip
  3 KB (411 words) - 15:51, 6 March 2024
• VAX 6000 series
  ...ssor System Block Diagram.png|thumb|400px|rightt|A four-processor VAX 6200 system]] ...ries were announced in April 1988, as the 'VAX 6200'. The single processor system was the [[VAX 6210]]. Up to four processors could be installed to produce a
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• SINTRAN III
  ...eal-time system|real-time]], [[multi-tasking]], [[multi-user]] [[operating system]] used with Norsk Data computers from 1974. Unlike its predecessors [[SINTR Sintran III core and [[file system]] was written in [[NORD PL]], intermediate language for Norsk Data computer
  2 KB (321 words) - 22:47, 5 November 2018
• NORD PL
  ...from [[Norsk Data]]. It shipped as a standard component of the [[operating system]] [[SINTRAN III]]; the language was also used to implement SINTRAN III. It
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• NORD-50
  ...10/S and NORD-50 CPUs. The [[I/O]] system, [[file system]] and [[operating system]] are common to both processors. ...tches. The [[NORD-10]] acts as a system supervisor running the [[operating system]] [[SINTRAN III/VS]] and the [[NORD-50 monitor]].
  3 KB (496 words) - 03:51, 20 October 2018
• NORD-42
  The '''NORD-42''' is an [[OEM]] version of the [[NORD-12]] system. It was manufactured for Noratom-Norcontrol A/S. ...ontrol used the NORD-42 as the central processor in their '''DATABRIDGE''' system. It was also used in simulators on a number of maritime schools both in Nor
  645 bytes (85 words) - 03:52, 20 October 2018
• NORDCOM
  ...e computer. A [[NORD-20]] with 4k memory is used as the controller for the system. NORDCOM is connected to a computer ("main machine") via a data channel tha The NORDCOM software system is module-based, with a maximum size of about 3K. It was created from Septe
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• QED (text editor)
  .... Peter Deutsch]] (of [[Ghostscript]] fame) for the [[Berkeley Timesharing System]] running on the [[Scientific Data Systems|SDS]] [[SDS 940|940]]. It was im
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• File system
  A '''file system''' is an abstraction provided by an [[operating system]] to users for them to store data aggregates of all sorts ([[program]] [[so The file system takes the actual storage blocks (normally identified with a block number) o
  2 KB (341 words) - 09:48, 26 March 2023
• Directory
  ...tion of a [[mass storage]] system or (more recently) a [[data network]]ing system. In the former, they record which [[file]]s are stored in that system, along with some information about them (such as where they are stored). In
  3 KB (431 words) - 04:37, 5 May 2024
• UNIX file system
  The '''UNIX file system''' was one of the first [[file system]]s to internally completely separate [[directory|directories]] (the catalog ...es (visible to users) to inode numbers (used internally by the [[operating system]], and generally not visible to users).
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• Reduced Instruction Set Computer
  ...fastest possible [[instruction]] [[execution time]], as part of a overall system architecture which maximizes the performance at minimum cost.
  2 KB (330 words) - 02:01, 16 December 2018
• Architecture
  ...formation systems refers to the high-level organization and structure of a system. The term is applied to both [[hardware]] and [[software]]. ...ters); the [[data path]]s which connect them all together; and the control system (usually [[microcode]]) which runs the whole ensemble.
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• NORD-2B
  | operating system = ...a data channel (ACM) and are connected to the process through a common I/O system. This makes it possible to run PAC functions on both computers."
  1 KB (189 words) - 03:43, 20 October 2018
• Unix SYSVr4
  ...was released on x86 in multiple varieties. It was the most successful Unix System V version.
  675 bytes (106 words) - 04:19, 17 December 2018
• BCPL
  ...ichards, its designer, mostly for systems programming (such as [[operating system]]s, [[compiler]]s, etc), for which the type limitation was not severe. (The It was first implemented on the [[CTSS]] operating system, while Richards was visiting MIT. A number of the early [[UNIX]] personnel
  3 KB (542 words) - 07:42, 20 June 2023
• Cross-compiler
  ...inging up an [[operating system]] on a new machine, or creating code for a system (e.g. an [[embedded processor]]) on which it is not intended to host a soft
  927 bytes (137 words) - 13:51, 13 April 2022
• Single-level store
  ...RAM]]) or in [[secondary storage]] (usually [[disk]]), and the [[operating system]] automatically moves information between them, as needed, without the acti ...physical location of a page is unimportant to a [[process]]; the operating system automagically arranges to bring pages into primary storage from secondary s
  3 KB (536 words) - 02:10, 16 December 2018
• Honeywell 6000 series
  Most 6000 series machines ran [[GCOS]] (General Comprehensive Operating System), an evolution of the earlier GECOS (General Electric Comprehensive Operati ==System organization==
  12 KB (1,837 words) - 19:24, 3 January 2024
• Process
  ...e most common computational abstraction in a [[multi-tasking]] [[operating system]]. It is effectively a 'virtual computer' (but not in the sense of a [[virt ...the OS (e.g. I/O to a [[file system]], as well as devices attached to the system).
  1 KB (201 words) - 23:13, 16 December 2018
• Virtual machine
  [[Operating system]]s which provide the capability are called 'virtual machine' (VM) OSs; if t ...esigned so that any and all operations which are reserved to the operating system are not only preventing from happening when a [[user]] tries to perform the
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• Page fault
  A '''page fault''' is an event in a [[virtual memory]] system when the [[Central Processing Unit|CPU]] makes a reference to a [[page]] in
  452 bytes (73 words) - 20:03, 18 December 2018
• Base and bounds
  ...s of the hardware implementation, and was only relevant to the [[operating system]].)
  995 bytes (161 words) - 21:34, 15 December 2018
• File
  ...imes [[object code]] - saved on [[secondary storage]], usually in a [[file system]]. Depending on the [[operating system]], a file may be presented to the user as a simple array of bytes or words
  906 bytes (151 words) - 23:06, 16 December 2018
• Transistor
  ...ch), and also possibly [[amplifier|amplify]], signals in an [[electronic]] system. It replaced an earlier generation of technology which performed the same f
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• TOPS-10
  '''TOPS-10''' was [[DEC]]'s [[operating system]] for the early [[PDP-10]] computers. It was descended from the 'Monitor' O
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• RH11 MASSBUS controller
  The RH11 consisted of a double [[system unit]] [[backplane]] (below) into which plugged a number of cards: ...ead_disk_system_maintenance_manual_Aug1974.pdf RJS04/RJS03 fixed-head disk system maintenance manual] (DEC-11-HRJSA-B-D) - contains detailed RH11 information
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• TENEX
  ...stor of the later [[Digital Equipment Corporation|DEC]]-supplied operating system for the [[DECSYSTEM-20]], [[TOPS-20]]. The [[Berkeley Time-Sharing System]] for the [[SDS 940]] was an important source of concepts for TENEX, along
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• Batch operating system
  ...job]] - a [[program]], along with all its input data - is handed in to the system; when there is an opportunity, it is run; and any resultant output is provi ...le a job was waiting for [[input/output|I/O]] to complete, the rest of the system was idle.
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• Intel 8085
  ...ons to handle the added features of the 8085 (a more complex [[interrupt]] system, and a built in [[asynchronous serial line]] interface); it is otherwise [[
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• Windows 1.0 Premiere Edition
  According to Trower, the memory management code of the operating system needed to be rewritten at a later point in development:
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• KS10
  | operating system = [[TOPS-10]], [[TOPS-20]], [[Incompatible Timesharing System|ITS]], [[TYMCOM-XX]] <!-- | price = US$200K (CPU), US$500K-1M (system) -->
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• Condition handler
  ...exits. When looking for a handler for a signalled condition, the condition system starts at the bottom of the call stack, and works its way upwards, looking ...a particular signalled condition is found in the call stack, the condition system may respond by signalling an 'unhandled condition' condition. Usually a han
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• Simulator
  ...ran [[Multics]]) and the [[PDP-10]] (which ran [[Incompatible Timesharing System|ITS]]) is either gone completely, or extremely rare. So, for people who wis
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• PDP-15
  ...d/Background System, DOS-15, XVM/DOS, XVM/RSX, XVM/MUMPS, Advanced Monitor System <!-- | price = US$150K (CPU), US$300-700K (system) -->
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• BA11-K mounting box
  ...e [[BA11 mounting boxes]]. It could contain up to 5 standard size (4-slot) system units. The system units were mounted longitudinally, facing upward (unlike the [[BA11 mountin
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• BA11-L mounting box
  ...unting box''' was for many years a standard [[DEC card form factor|hex]] [[system unit]] [[backplane]] mounting box for the [[H960 rack|H960]] series of 19"- ...esigned for these spaces, and could contain up to 2 standard size (4-slot) system units.
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• Bootstrap
  ...'' (the term can also be used as a noun) means to start a computer-related system from nothing. It has two main meanings: ...torage]] into [[main memory]], which then loads and starts the [[operating system]]. Earlier methods for entering the bootstrap code into a blank memory, wa
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• IBM 709
  | operating system = SOS, IBSYS, IBJOB ...ioneered on the 709 was [[time-sharing]]; the first time-sharing operating system, [[CTSS]], was first experimentally operated on a 709.
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• IBM 7090
  | logic type = [[Standard Modular System|SMS]] cards using alloy-junction [[transistor]]s | operating system = SOS, IBSYS, IBJOB, FMS, [[CTSS]]
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• Compatible Time-Sharing System
  ...ystem''' (usually '''CTSS''', for short) was a ground-breaking [[operating system]], the first [[time-sharing]] OS to be used in service. ...at it could simulate the [[Fortran Monitor System]], the [[batch operating system]] previously run on the [[IBM 7090]] and [[IBM 7094]] [[mainframe]] compute
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• Command processor
  ...[[time-sharing]] systems (such as [[TENEX]] and [[Incompatible Timesharing System|ITS]]) followed this example.
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• Magnetic tape drive
  ...pment Corporation|DEC]] [[TU10 magtape drive]]/[[TM11 magtape controller]] system, not only is the [[magnetic tape controller]] separate from the drive, but
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• BDV11 Bus Terminator/ROM
  So if you start some [[operating system]] which enables the KW11-L (e.g. [[UNIX]]), and then try and re-boot it by ...out error on the BDV11 which can cause damage if a BDV11 is plugged into a system with the optional -12V on pin AB2. The trace which is supposed to connect b
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• Internet
  ...u/Saltzer/www/publications/endtoend/endtoend.pdf ''End-To-End Arguments in System Design''], ACM Transactions in Computer Systems, Volume 2, Number 4, Novemb
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• UNICHANNEL 15 System
  The '''UNICHANNEL 15 System''' ('''UC15''') is an group of hardware sub-systems which allows a [[PDP-15 ...s.org/pdf/dec/pdp15/XVM/DEC-15-HUCMA-B-D_UC15_Nov73.pdf UC15 unichannel-15 system maintenance manual] (DEC-15-HUCMA-B-D)
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• MX15-B Memory Multiplexer
  The '''MX15-B Memory Multiplexer''' was part of the [[UNICHANNEL 15 System]], which allowed a [[PDP-11]] (usually a [[PDP-11/05]]) to act as a [[front ...type UNIBUS cycles (which have no exact equivalents in the PDP-15's memory system) to PDP-15 memory operations with the same effect.
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• Emacs editors
  ...CO]] [[macro]]s on the [[Incompatible Timesharing System|ITS]] [[operating system]] at [[MIT]]. Since TECO itself was written in [[assembly language]] for th ...ll sold and supported. [[SINE]] was created for the [[MagicSix]] operating system. A version was done in [[LISP]] for [[Multics]] by [[Bernie Greenberg]]. T
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• Memory management
  ...rdware is needed for two reasons. First, in a [[time-sharing]] [[operating system]]s, to prevent one user's erroneous (or hostile) program from interfering w Early [[International Business Machines|IBM]] [[System/360]] machines exposed the actual physical memory addresses to users (hence
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• Amstrad
  ...nal PC construction: the power supply moved from the monitor to inside the system unit's sturdy metal case. Later series included i486 models, small form-fa
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• M9312 ROM
  If S1-2 is 'off', the system will power-up normally; if 'on', the CPU will obtain its new PC/PS pair fro
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• KD11-A CPU
  ...of them plugged into a [[wire-wrap]]ped custom 9-slot [[backplane]] dual [[system unit]]. The optional KE11-E Extended Instruction Set, KE11-F Floating Instr ...pdf/dec/pdp11/1140/PDP-1140_System_Engr_Drawings_Rev_P_Jun74.pdf PDP-11/40 system engineering drawings] (pp. 9-108 of the PDF)
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• WAITS
  ...e unofficially means "West-coast Alternative to [[Incompatible Timesharing System|ITS]]", or "West-coast Artificial Intelligence Time-Sharing" (although thes ...-10 4S72 and was initially just called the "Stanford monitor" or "Stanford system" until receiving the name WAITS. In 1976, a KL10 became the primary, makin
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• MACLISP
  ...DP-6]] LISP'' at [[Project MAC]], then moved to [[Incompatible Timesharing System|ITS]] and renamed ''MACLISP'' somewhere along the way. Later ported to [[T
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• Comart
  ...urer of single- and [[multi-user]] [[microcomputer]]s that ran [[operating system]]s from the Digital Research [[CP/M]] family.
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• DEC edge connector contact identification
  ...for a unique, fixed slot in a single type of backplane; the board-centric system is better for cards like early FLIP CHIPs, which were generic, and appeared
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• Chaosnet
  ...N was a [[Carrier-Sense Multiple Access with Collision Detection|CSMA-CD]] system modeled on the [[Xerox PARC]] 3 megabit/second Experimental [[Ethernet]], r | [[Incompatible Timesharing System|ITS]] || Yes || Yes || Yes
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• Byte stream
  The ''[[pipe]]'' mechanism used in a number of [[operating system]]s, such as [[Unix]] and [[MS-DOS]], is a uni-directional byte stream. One
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• Able ENABLE
  ...ical in function to the PAR's of the standard [[PDP-11 Memory Management]] system, but had different addresses from the ones built into the CPU. (The ENABLE ...ve the native PARs untouched, using only the ABLE PARs, as the [[operating system]] ran.
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• Foonly
  They made their own operating system, [[FOONEX]], for their machines. It was based on [[TENEX]]. ...esign. It was built at [[III]] for use in a optical character recognition system. It was bought by Omnibus for generating computer graphics.
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• FOONEX
  '''FOONEX''' was an [[operating system]] for [[Foonly]]'s [[PDP-10]] clones. It was based on [[TENEX]].
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• Maxc
  They ran the [[TENEX]] [[operating system]]; to do this, Maxc implemented [[virtual memory]] mechanisms comparable to ...llections/parts/maxc-board/ Original boards from a Xerox MAXC Time Sharing System]
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• TYMCOM-X
  [[PDP-10]] operating system at Tymshare. Similar in appearance to [[TYMCOM-IX]] for their [[SDS 940]]
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• DL10 PDP-11 Data Link
  ...e controlled by both processors in a multi-[[Central Processing Unit|CPU]] system). So, it could be connected to [[KA10]]s and [[KI10]]s, but only to [[KL10] ...-10-XSRMA-A-D%20DECsystem10%20System%20Reference%20Manual.pdf DECsystem-10 System Reference Manual] - documents the PDP-10's DL10 control instructions in App
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• Big-endian
  'Big-endian' refers to machines (like the [[IBM System/360]]) which number the bits and bytes from the most significant (high-orde
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• TM10 Magnetic Tape Control
  ...-10-XSRMA-A-D%20DECsystem10%20System%20Reference%20Manual.pdf DECsystem-10 System Reference Manual] - documents the TM10 in sections 6-6&ndash;6-9 (pp. 210-2
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• Rubin 10-11 interface
  ...55 [[page]]s of 1K [[word]]s each (the standard [[Incompatible Timesharing System|ITS]] page size). (The 256th page contained the mapping registers, below; u ...master/files/ten11 TEN11;] - ''probably'' the [[Stanford University Design System|SUDS]] drawings for it
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• Magnetic tape controller
  ...]] system (which also uses the master/slave approach); the DEC [[MASSBUS]] system of a MASSBUS interface, [[TM02 magtape controller|TM02]] formatter, and tap
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• Hierarchy
  ...are now hierarchies, an approach started by [[Multics]]. The [[Domain Name System]] of the [[Internet]] is also structured as a hierarchy, with nodes 'com', ...ere it is used to refer the the relationships between the sub-systems in a system.
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• TX-2
  ...ral other TX-2 alumni, where he helped create the descendant [[LINC tape]] system; he then moved to [[DEC]], where he helped create [[DECtape]], very similar Beginning in 1964 a [[time-sharing]] system called [[APEX]] was put together on the TX-2 computer at Lincoln Lab under
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• August
  '''August''' was a [[PDP-10]] [[operating system]] based on [[TENEX]]. It was created by [[Douglas Englebart]]'s [[Augment]]
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• PDP-5
  | logic type = [[transistor]] [[System Module]]s
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• VT52
  ...terminal emulator was used in the [[Atari]] [[Atari TOS|TOS]] [[operating system]].
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• Atari TOS
  Operating system for [[Atari]]'s [[Atari ST|ST]] and [[Atari TT|TT]] series. Based on GEMDO
  192 bytes (26 words) - 23:21, 14 January 2024
• Technology Square
  Originally, the 9th floor held MIT's second [[Compatible Time-Sharing System|CTSS]] machine, and the [[GE-635]] and [[GE-645]] of the [[Multics]] projec ...that space was used to hold the MIT-MC [[KL10]] [[Incompatible Timesharing System|ITS]] machine.
  7 KB (1,012 words) - 06:46, 20 February 2024
• Berkeley Time-Sharing System
  ...could interfere with another process, or with the operation of the overall system). ...X (e.g. the split between ''fork()'' and ''exec()'') copy how the Berkeley system operated. It was also one of the influences on [[TENEX]].
  4 KB (603 words) - 14:51, 11 June 2023
• Running UNIX V6 on an -11/23
  ...re fairly simple to deal with, but they require minor modifications to the system, so you will need a running V6 to do these; bringing it up under a [[simula ...ooting, as a clock [[interrupt]] before UNIX is ready for it can trash the system (and has been observed to trash the disk, if you are really unlucky).
  6 KB (1,028 words) - 16:56, 2 June 2022
• TECO
  ...4; it was for a long time the primary editor on [[Incompatible Timesharing System|ITS]]. [[EMACS]] was implemented using TECO's programming facilities.
  2 KB (256 words) - 12:51, 23 April 2024
• KD11-B CPU
  ...ited to 2400 baud), allowing use of a more capable serial interface as the system console. The other (W2), when installed, disables the CPU from acting as a ...ts are all the same parts as the previous revision, but the chip numbering system for the board has been completely revised.
  11 KB (1,726 words) - 21:07, 2 July 2023
• MM11-K core memory
  '''MM11-K core memory''' is a rare [[UNIBUS]] [[main memory]] system which is effectively an earlier, smaller version of the common [[MM11-L cor
  2 KB (326 words) - 10:41, 26 January 2022
• Fuzzball
  [[PDP-11]] operating system by [https://www.eecis.udel.edu/~mills/ David Mills]; although it was origin == Operating System ==
  2 KB (242 words) - 00:34, 3 June 2023
• Camexec
  An [[Incompatible Timesharing System|ITS]]-style [[PDP-11]] operating system. ...tware-generated interrupts of various sorts. A process could intercept the system calls of its children or let the OS handle the calls. We used this feature
  3 KB (544 words) - 01:12, 1 April 2024
• XT/370
  [[IBM]] product to emulate a [[System/370]] mainframe on an [[IBM PC]]/XT, using a [[68000]] with custom microcod
  157 bytes (21 words) - 19:26, 18 December 2018
• Intel
  * [http://www.bitsavers.org/pdf/intel/ Intel] - system documentation at [[Bitsavers]]
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• IMP interface
  * MIT DM IMP, used by [[Incompatible Timesharing System|MIT-DM]]. Made by Bob Metcalfe * MIT KA IMP, used by [[Incompatible Timesharing System|MIT-AI, -ML, and -MC]]
  2 KB (258 words) - 20:39, 17 December 2023
• Interface Message Processor
  ** [https://walden-family.com/impcode/imp-hardware.pdf Intermodem Processor System] - Honeywell manual covering much of the custom IMP hardware
  3 KB (407 words) - 20:49, 17 December 2023
• MOS operating system
  ...ional|SRI]]) was a cooperative [[real-time]] [[multi-tasking]] [[operating system]], originally for the [[PDP-11]], used for a number of [[packet switch]]es ...onous I/O, and allocation and freeing of [[main memory]]; it had no [[file system]] or other support for [[secondary storage]].
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• Asynchronous
  Thus, elements in asynchronous [[logic]] system respond to events 'upstream' in the logic network, not to an external contr
  923 bytes (147 words) - 19:43, 29 March 2024
• RX11 floppy disk controller
  .../classiccmp/RX%20info/RX11%20Disk%20Option%20Bulletin.tif RX11 Floppy Disk System Option Bulletin] ...org/pdf/dec/disc/rx01/EK-RX01-OP-001_RX11UM_Nov76.pdf RX8/RX11 floppy disk system user's manual] (EK-RX01-0P-001)
  4 KB (516 words) - 14:50, 6 November 2022
• RX211 floppy disk controller
  ...-001%20RX02%20Floppy%20Disk%20System%20User's%20Guide.pdf RX02 Floppy Disk System User's Guide] (EK-RX02-UG-001) - the RX211 and RXV21 are covered in Chapter
  4 KB (536 words) - 15:06, 6 November 2022
• User
  ...one. On a [[time-sharing]] system, it would be the person logged in to the system over a [[terminal]] (real or virtual). On a [[personal computer]], it would ...ration for other users are prohibited, and only allowed to the [[operating system]], which runs in the latter mode.
  804 bytes (131 words) - 16:00, 18 December 2018
• Emitter-coupled logic
  ...ransistor]]s, with both their emitters connected to the low voltage in the system (often ground) - hence the name ECL. The collectors on both, which are the
  2 KB (273 words) - 18:04, 16 May 2023
• RTS-8
  ...t is permanently resident in [[main memory]]; it does not include a [[file system]].
  1 KB (166 words) - 00:32, 23 June 2020
• TSS/8
  ...up to 16 users (24 in certain applications) a comprehensive [[library]] of system programs. ...ompiling, debugging, loading, saving, calling, and executing user programs on-line. Two conversational, interactive [[interpreter]] systems, [[FOCAL-8]] and [
  1 KB (118 words) - 22:57, 22 November 2019
• Parity
  '''Parity''' is a very early error-detectiion system (now mostly replaced by [[Cyclic redundancy check|CRCs]]). It can detect al
  607 bytes (98 words) - 16:31, 6 December 2020
• IBM 704
  <!-- | operating system = SOS, IBSYS, IBJOB --> ...om/ibm/history/exhibits/mainframe/mainframe_PP704.html 704 Data Processing System] - IBM Archive page
  2 KB (278 words) - 02:11, 9 August 2022
• TS03 DECmagtape Transport
  ...TMB11-OP-001_Nov76.pdf TMB11/TS03 DECmagtape system user's manual (TMB11-M system)] (EK-TMB11-OP-001) ...TM8-E_DECmagtape_System_Maintenance_Manual_Apr76.pdf TS03/TM8-E DECmagtape system maintenance manual] (EK-T3TM8-MM-001)
  2 KB (322 words) - 04:07, 9 January 2024
• Xerox PARC
  * the unification of the above into the network-centric information-handling system, with [[server]]s and workstations (the Alto). ...://xeroxparcarchive.computerhistory.org/index.html Xerox PARC Interim File System (IFS) archive]
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• Synchronous
  Thus, elements in a synchronous [[logic]] system respond to an external control which imposes synchronizing timing; an exter
  748 bytes (113 words) - 19:49, 29 March 2024
• NORD-OPS
  ...s for NORD-OPS has been to make a modular, flexible and reliable operating system, which then should make it easy to use and utilize the NORD computers in th ...al reasons natural to base the operating system on the [[SINTRAN]] Monitor System:
  1 KB (171 words) - 15:06, 9 September 2022
• Task
  Tasks are more common on [[real-time system|real-time]] [[operating system]]s, but they are not restricted to such systems.
  423 bytes (68 words) - 23:14, 16 December 2018
• Xerox Alto
  ...n the [[RK02/03 disk drive|RK02 disk drive]]); the Alto-based Interim File System (IFS) [[file server]]s used [[Trident]] disk drives. ...o/memos_1974/Alto_A_Personal_Computer_Dec74.pdf Alto - A Personal Computer System] December, 1974 - a [http://gordonbell.azurewebsites.net/Computer_Structure
  6 KB (863 words) - 22:39, 3 October 2023
• UNIVAC I
  | price = US$1250-1500K (system)
  2 KB (319 words) - 01:12, 12 July 2023
• KB11-A CPU
  ...e KB11-A could also use the special high-speed [[MS11 Semiconductor Memory System]], specific to the PDP-11/45, which plugged into a special [[bus]], the Fas
  3 KB (395 words) - 21:08, 2 July 2023
• KB11-D CPU
  ...e KB11-A could also use the special high-speed [[MS11 Semiconductor Memory System]], specific to the PDP-11/45, which plugged into a special [[bus]], the Fas
  2 KB (307 words) - 12:32, 11 October 2022
• KD11-Z CPU
  * [http://bitsavers.org/pdf/dec/pdp11/1144/1144_SystemTechMan.pdf PDP-11/44 System Technical Manual] - the KD11-Z is covered in Chapters 2 and 6
  4 KB (668 words) - 15:59, 6 February 2024
• Array
  Given the naming system normally used for [[main memory]] (itself usually a large array), single-di
  681 bytes (105 words) - 16:21, 15 December 2018
• Address
  ...[[byte]] in most contemporary machines (following the example of the [[IBM System/360]], or a [[word]] (typical, on older machines). Main memory cells are ar
  1 KB (185 words) - 19:44, 14 December 2018
• KB11-B CPU
  * M8137 System Address Paths * M8138 System Status Registers
  3 KB (456 words) - 21:08, 2 July 2023
• SITS
  ...l Incompatible Timesharing System". It was a [[time-sharing]] [[operating system]] for a [[PDP-11/45]], created in the mid-1970s at [[MIT]] for running [[Lo ...ty and the concept of spheres. It has a hierarchical tree-structured file system inspired by [[Multics]]. SITS supported [[raster]] [[display]]s similar to
  7 KB (1,015 words) - 22:43, 15 March 2024
• Video terminal
  ...etype]]s, but instead of the output being printed on paper by a mechanical system, it was displayed on the screen. Like the earlier printing terminals, they
  2 KB (302 words) - 02:25, 21 February 2024
• Bit-mapped display
  ...as [[main memory]]. Due to the intimate relationship with the rest of the system, they are usually found on [[personal computer]]s. | 1973 || [[Knight TV system|Knight TV]] || [[MIT Artificial Intelligence Laboratory|MIT AI Lab]] || Tom
  3 KB (448 words) - 12:21, 27 February 2024
• MM11-E and MM1-F core memories
  ...EC card form factor|extended-length]]), plugged into a custom-wired quad [[system unit]] [[backplane]]. The MM11-F and MM11-FP used the same backplane; only
  4 KB (667 words) - 19:53, 30 July 2023
• Term-Mite ST Smart Terminal/TermMite.asm
  rstvec jmp reset ;start of prog from system reset mov scr,a ;set system control reg
  24 KB (5,539 words) - 03:05, 27 December 2018
• Firmware
  ...binary]] form, in a [[read-only memory|ROM]] of some sort in/on the device/system.
  428 bytes (65 words) - 05:07, 13 December 2018
• PARC Universal Packet
  ...was used as both the [[routing protocol]] (the router information-exchange system), and for hosts to discover routers.
  6 KB (926 words) - 16:27, 11 May 2023
• Multi-user
  ...on at the same time. The classic form is the [[time-sharing]] [[operating system]], but it also includes special-purpose systems which can provide specific, ...e settings of [[access control]] parameters (for OS's which have them),the system might prevent one user from examining or changing another user's [[file]]s.
  686 bytes (108 words) - 01:36, 16 December 2018
• Portable
  ..., or is designed to be, run on different kinds of computers or [[operating system]]s (or both). For the former, it cannot be written in [[assembly language]] ...l-labs.com/usr/dmr/www/portpap.html Portability of C Programs and the UNIX System]
  1 KB (185 words) - 04:32, 30 January 2023
• Telnet
  ...g system) as if they were using a terminal attached directly to the remote system. ...s, and a [[server]] (along with the necessary support from the [[operating system]]) on the remote computer.
  827 bytes (124 words) - 23:20, 9 June 2023
• User interface
  A '''user interface''' is the way in which some system interacts with a [[user]]. Exactly how will depend on i) the [[hardware]] w
  945 bytes (130 words) - 18:21, 5 October 2023
• Cursor
  ...linking, in able to allow the eye to locate them more easily. When using a system with a [[mouse]], the mouse usually controls the location of the cursor.
  462 bytes (70 words) - 17:19, 13 December 2018
• H742 Power Supply
  ...r Supply''', and later revision '''H7420''', is a modular [[power supply]] system from [[Digital Equipment Corporation|DEC]], used with the [[BA11-F Mounting * [[H765 Power System]]
  3 KB (451 words) - 14:59, 10 July 2023
• DEC standard modular regulators
  ...[[H742 Power Supply]] of the [[BA11-F Mounting Box]] and the [[H765 Power System]] of the [[BA11-K mounting box]]. (They are also occasionally found in othe ...nt|AC]] input), in that they take as input 30V AC supplied by the 'mother' system using a large (and heavy!) isolation/step-down transformer.
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• BA11-F Mounting Box
  ...unit]] [[backplane]]s, and could contain up to nine standard size (4-slot) system units, although typically the backplane used to hold the CPU was a 9-slot ( The system units were mounted vertically, facing sideways (unlike the later [[BA11-K m
  2 KB (327 words) - 03:15, 11 July 2023
• MS11-P MOS memory
  ...] when an error occurs)--> and detects double-bit errors. On power-on, the system is frozen (via negation of the ACLO UNIBUS signal) while the entire memory
  2 KB (345 words) - 17:10, 18 August 2023
• Old C Changes
  compilation) were actually available in the 6th Edition system, dence on system-specific naming conventions. The standard prefix
  15 KB (2,398 words) - 14:52, 16 January 2023
• PDP-8/S
  | operating system =
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• Java
  ...; e.g. to restrict the ability to read and write [[file]]s on the [[host]] system.
  865 bytes (145 words) - 14:43, 19 October 2018
• World Wide Web
  ...the '''WWW''' or '''Web''' for short) is an extremely large [[hypertext]] system which is the most-popular [[application]] on the [[Internet]] (to the point
  825 bytes (126 words) - 22:57, 29 January 2024
• Baud rate
  ...[bit]]s), then the baud rate and the bit rate are identical. However, some system use more complex signalling, and each symbol might have, for example, 4 pot
  680 bytes (108 words) - 20:55, 13 December 2018
• Graphical user interface
  The user interacts with the [[operating system]] and [[application]]s with a pointing input device, which is the main inpu The first GUI was associated with the [[SAGE]] air defense system; its precursor, [[Whirlwind]], hosted the genesis of the [[light pen]] (the
  2 KB (242 words) - 04:19, 4 October 2023
• Whirlwind
  ...t simulator, but wound up being used to prototype the [[SAGE]] air defence system. ...e reader was also added later, as was a [[line printer]].) Eventually, the system was enhanced with a [[magnetic tape drive]] and a [[drum]]. A [[vector grap
  4 KB (603 words) - 19:28, 19 March 2024
• CADR
  ...px|The Knight keyboard was used with the MIT-AI [[Incompatible Timesharing System|ITS]] machine and CADRs; this is a rendition of the layout]] ** [https://tumbleweed.nu/lm-3/history.html Lisp Machine System Release History]
  2 KB (249 words) - 17:14, 6 January 2024
• H765 Power System
  The '''H765 Power System''' is a modular [[power supply]] system from [[Digital Equipment Corporation|DEC]], used in the [[BA11-K mounting b ...her sub-systems (such as the [[MJ11 memory system|MJ11]] and [[MK11 memory system]]s), other regulator configurations may be used (e.g. the MJ11 calls for tw
  2 KB (391 words) - 15:39, 10 July 2023
• DEC power distribution connectors
  ...t Corporation|DEC]] [[PDP-11]] [[backplane]] [[system unit]]s use a common system of connectors to the [[power harness]] which leads from the [[power supply]
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• H744 +5V Regulator
  ...f/dec/pdp11/1140/1140_SystemManual.pdf PDP-11/40, -11/35 (21 inch chassis) system manual] (EK-11040-TM-002)- the H744 is covered in Section 6.4.3 (pp. 112-11 ...pdf/dec/pdp11/1140/PDP-1140_System_Engr_Drawings_Rev_P_Jun74.pdf PDP-11/40 system engineering drawings] - the H744 is covered on pp. 205-208 of the scanned v
  2 KB (324 words) - 17:24, 10 July 2023
• H745 -15V Regulator
  ...f/dec/pdp11/1140/1140_SystemManual.pdf PDP-11/40, -11/35 (21 inch chassis) system manual] (EK-11040-TM-002)- the H745 is covered in Section 6.4.4 (pp. 114-11 ...pdf/dec/pdp11/1140/PDP-1140_System_Engr_Drawings_Rev_P_Jun74.pdf PDP-11/40 system engineering drawings] - the H745 is covered on pp. 209-208 of the scanned v
  1 KB (236 words) - 17:29, 10 July 2023
• H754 +20V, -5V Regulator
  ...f/dec/pdp11/1140/1140_SystemManual.pdf PDP-11/40, -11/35 (21 inch chassis) system manual] (EK-11040-TM-002)- the H754 is covered in Section 6.4.4a (pg. 115 o
  2 KB (278 words) - 17:38, 10 July 2023
• BA11-D Mounting Box
  ...A11-D mounting box''' was an early standard [[DEC card form factor|hex]] [[system unit]] [[backplane]] [[mounting box]]. One of the [[BA11 mounting boxes]], ...esigned for these spaces, and could contain up to 5 standard size (4-slot) system units.
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• Job
  ...[application]] together with its input data, often for a [[batch operating system]]. ...|CPU]] time, [[main memory]] usage, [[printer]] output, etc. An accounting system measured all the resources used in running a job, added up all the costs, a
  1 KB (235 words) - 02:25, 11 September 2022
• Computer operator
  ...magnetic tape]]s and [[disk]] packs, and [[bootstrap]]ping the [[operating system]] after the machine crashed, or was powered on. ...ey had to know a fair amount - e.g. how to deal with a [[multi-processor]] system which had had one of the [[Central Processing Unit|CPU's]] fail, which woul
  875 bytes (140 words) - 01:35, 16 December 2018
• Flow control
  ...to communicate), flow control is fairly simple to peform; the [[operating system]] monitors the amount of data in the stream, and blocks the sender when the
  2 KB (283 words) - 14:47, 18 October 2021
• Database
  ...he data, and mediate access to it, is usually called a database management system, usually given as a 'DBMS'.
  376 bytes (61 words) - 14:07, 24 April 2024
• End to end
  ...rms) to implement things such as reliabilty in a [[communication network]] system.
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