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Page title matches

  • Direct Access Storage Device
    ...'''DASD''', is [[International Business Machines|IBM]] jargon for [[random access]] [[secondary storage]] devices, such as [[floppy disk]]s, hard [[disk]]s,
    277 bytes (37 words) - 14:50, 25 August 2021
  • Random Access Memory
    '''Random Access Memory''' (often given as '''RAM''') is slang term for a computer's [[main ...disk]] [[secondary storage]] (although technically disks are also [[random access]] - unlike, say, [[magnetic tape]] secondary storage).
    457 bytes (64 words) - 13:25, 20 November 2023
  • Direct Memory Access
    '''Direct Memory Access''', usually abbreviated as '''DMA''', refers to a now-very-common technique ...e. In the second, the memory has multiple ports, and the device has direct access to the memory via one of the ports.
    751 bytes (125 words) - 23:08, 20 October 2021
  • Random access memory
    #Redirect [[Random Access Memory]]
    34 bytes (4 words) - 05:21, 12 November 2016
  • Carrier-Sense Multiple Access with Collision Detection
    ...ion''' (often given as the acronym, '''CSMA-CD''') is a way of controlling access to a [[Local area network|LAN]] using a [[broadcast]] bus (i.e. a shared br
    1 KB (181 words) - 16:10, 7 June 2022
  • Direct memory access
    #Redirect [[Direct Memory Access]]
    34 bytes (4 words) - 16:43, 14 May 2018
  • Access time
    ...etimes '''response time''') is the time period between the start of a read access cycle, and the point in time when the data is returned to the requestor. ...n the request arrives, that can delay the memory's response - and thus the access time for that particular cycle.
    690 bytes (113 words) - 02:11, 20 September 2022
  • Random access
    ...go to disparate [[address]]es without significant delays; in '''sequential access''' memories, only successive operations to following locations can be done
    834 bytes (110 words) - 01:56, 24 December 2018
  • Sequential access
    #Redirect [[Random access]]
    27 bytes (3 words) - 15:52, 10 October 2018
  • DRV11-B Direct Memory Access Interface
    ...[[bit]] parallel ports, one input, and one output; it uses [[Direct Memory Access|DMA]] to transfer data.
    3 KB (380 words) - 03:54, 10 June 2020
  • MSV11-L MOS Random-Access Memory
    [[Access time]] is 210-230 nsec for reads, and 90-120 nsec for writes; [[cycle time]
    6 KB (926 words) - 14:10, 22 September 2022
  • MSV11-P MOS Random-Access Memory
    4 KB (600 words) - 21:23, 2 July 2023
  • DR11-W Direct Memory Access Interface
    ...[[parallel interface]] for the [[UNIBUS]], one which used [[Direct Memory Access|DMA]] to transfer data to a user device. It was a single [[DEC card form fa .../www.bitsavers.org/pdf/dec/unibus/EK-DR11W-UG-004.pdf DR11-W Direct Memory Access Interface Module User's Guide] (EK-DR11W-UG-004)
    5 KB (746 words) - 17:48, 2 December 2021
  • Media Access Control Address
    '''Media Access Control Addresses''' (usually shortened to the acronymic form, '''MAC Addre
    1 KB (162 words) - 01:15, 11 July 2022
  • Media Access Control address
    #Redirect [[Media Access Control Address]]
    42 bytes (5 words) - 01:15, 11 July 2022
  • Minimum access coding
    33 bytes (3 words) - 22:14, 24 March 2024

Page text matches

  • DECnet
    ...int-to-point links only. Introduction of file transfer (FAL), remote file access (DAP), task-to-task programming interfaces and network management features. ...ntroduction of adaptive routing capability, downline loading (MOP), record access, a network management architecture, and gateways to other types of networks
    17 KB (2,405 words) - 17:43, 13 January 2024
  • RSTS/E
    ...ude [[DIGITAL Command Language|DCL]] as a choice for the CLI, giving users access to essentially the same command language used in [[RSX-11]] and, later, [[V
    14 KB (2,134 words) - 16:06, 3 May 2023
  • PDP-11/10
    ...memory|ROM]] (1 Kword) and a small amount of [[core memory|core]] [[Random Access Memory|RAM]] (128 words). It is not clear if any of these machines were eve
    2 KB (233 words) - 19:22, 8 February 2024
  • Nuclear Data
    | access-date=September 26, 2016
    2 KB (243 words) - 18:25, 13 January 2024
  • QBUS
    ...and [[peripheral controller]]s through read-write cycles, [[Direct Memory Access|DMA]], and [[interrupt]]s, as well as in much of the low-level detail, such
    13 KB (2,043 words) - 23:27, 14 January 2024
  • UNIBUS
    ...nd device [[register]]s; and the ability for devices to do [[Direct Memory Access|DMA]] transfers to memory, and to [[interrupt]] the CPU.
    13 KB (2,162 words) - 23:26, 14 January 2024
  • PDP-11/34
    ==Register access==
    4 KB (536 words) - 19:28, 8 February 2024
  • PDP-11/20
    | memory speed = [[MM11-E and MM1-F core memories|MM11-E]]: 500 nsec [[access time]]<br>&nbsp; &nbsp; &nbsp; 1.2 μsec [[cycle time]]
    6 KB (900 words) - 19:27, 31 December 2023
  • PDP-11/24
    ...UNIBUS and the EUB for access to all of memory for UNIBUS [[Direct Memory Access|DMA]] devices; without it, the UNIBUS [[address space]] was statically mapp ...ath for addressing information to flow from the UNIBUS to the EUB, for DMA access to main memory by devices.
    8 KB (1,395 words) - 23:37, 29 February 2024
  • PDP-11/44
    ...ut not [[address]] lines); [[Direct Memory Access|DMA]] devices could gain access to the memory via a [[UNIBUS map]] which connected the two, and mapped UNIB
    4 KB (584 words) - 23:42, 29 February 2024
  • PDP-11/45
    ...em), or the -11/45's main UNIBUS (the 'A' UNIBUS), so that [[Direct Memory Access|DMA]] devices on that UNIBUS could do [[input/output|I/O]] to the fast memo
    6 KB (895 words) - 23:52, 29 February 2024
  • PDP-11/70
    ...[[main memory]] via a new Main Memory Bus, and changes to the CPU to allow access to that much memory * A [[UNIBUS map]] to allow devices on the UNIBUS access to all of that memory
    5 KB (729 words) - 23:43, 29 February 2024
  • RK06/07 disk drive
    | average access time = 49 msec
    3 KB (492 words) - 00:27, 15 August 2023
  • RK11 disk controller
    The name of bit 6 has changed slightly from the RK11-C to the -D ("Access Ready" to "R/W/S Ready"), but it seems to be basically the same functionali
    14 KB (2,038 words) - 23:04, 13 September 2023
  • RK611 disk controller
    ...dge [[disk]] [[drive]]s. All data transfers are done using [[Direct Memory Access|DMA]]. Data is protected with a [[hardware]]-generated and checked [[error-
    4 KB (563 words) - 13:33, 26 February 2023
  • RS11 disk drive
    | minimum access time = 258 16 μsec | average access time = 16.9 msec (60 Hz [[alternating current|AC]] power)<br>20.3 msec (50
    1 KB (212 words) - 22:14, 14 August 2023
  • RL01/02 disk drive
    | average access time = 67.5 msec Some later drives have access panels which can be removed to gain to the solenoid. On older ones, one has
    8 KB (1,357 words) - 16:33, 18 August 2023
  • PDP-11 architecture
    ...ous later models added various instructions for Processor Status Word (PS) access, maintenance, etc.
    13 KB (1,949 words) - 17:37, 29 February 2024
  • RK05 disk drive
    | average access time = 70 msec
    7 KB (1,170 words) - 00:30, 15 August 2023
  • RK8-E disk controller
    ...05 drives. It used the [[single cycle data break]] form of [[Direct Memory Access|DMA]] to transfer data directly to [[main memory]]. It uses blocks of 256 w
    712 bytes (111 words) - 18:25, 29 April 2021
  • Atari 400
    Memory: Includes 16K bytes of Random Access Memory (RAM)
    2 KB (326 words) - 03:10, 23 May 2023
  • Timeline of Norsk Data
    * [[ACCESS]], an on-line query system, allowing user-friendly access to a data-base via interactive terminals.
    7 KB (950 words) - 12:59, 23 August 2016
  • NORD-10
    ...had a priority from 0 to 3. A program on a lower ring was never allowed to access the pages on a higher ring. Programs which ran on rings 2 and 3 could use t ...rupt priority level|interrupt priority]] of the device. In [[Direct Memory Access|DMA]] transfers the device would send a "REQUEST". The CPU would answer wit
    8 KB (1,313 words) - 13:52, 11 July 2023
  • PDP-10
    For [[Direct Memory Access|DMA]], [[mass storage]] peripherals connected directly to memories (PDP-10 * [https://archive.computerhistory.org/resources/access/text/2023/07/102737607-05-19-acc.pdf DECsystem-10 Technical Summary/DECSYST
    11 KB (1,640 words) - 20:59, 8 March 2024
  • PDP-8 architecture
    ...s used. With this clever combination, a program running in one field could access data in the same field by direct addressing, or data in another field with All supported [[Direct Memory Access|DMA]], called "data break" in the PDP-8's. There were two types.
    22 KB (3,497 words) - 19:34, 29 November 2022
  • Bus
    ...computers began to share memory between several CPUs. On these computers, access to the bus had to be prioritized, as well. The classic, simple way to prioritize interrupts or bus access was with a [[daisy chain]].
    14 KB (2,170 words) - 05:09, 5 September 2019
  • Linux
    hackers interested in operating systems and 386's with access to minix. >happening. However, for the time being I am without FTP access so I don't
    28 KB (4,805 words) - 18:01, 29 February 2024
  • NUSSE
    ...the drum to fetch it. And another 16ms if a complete turn was necessary to access the data address, y-addr. From this it is clear how a dedicated programmer
    4 KB (647 words) - 20:59, 18 March 2024
  • DIGITAL Command Language
    ...tion on system state. DCL includes [[Conditional statement|IF-THEN-ELSE]], access to all the [[Record Management Services|RMS]] file types including stream,
    6 KB (913 words) - 18:07, 16 December 2018
  • Optimum programming
    ...chnique sometimes used on computers whose [[main memory]] was not [[random access]], but sequential (such as [[delay line]]- and [[drum]]-based memory).
    2 KB (229 words) - 22:13, 24 March 2024
  • Apple II Machine Language Monitor
    Otherwise, from BASIC, you access the monitor by running: === Single Address Memory Access ===
    2 KB (282 words) - 16:55, 16 December 2018
  • MicroVAX 3800/3900
    ...OM on the [[Central Processing Unit|CPU]] board, which prevents multi-user access to these computers.
    3 KB (380 words) - 07:06, 31 January 2024
  • MVS
    ...Level 8505 - Tur(n)key Level 4- Version 1.00, update 08 - Explains how to access the publicly available online demo system as well as a link to the download
    1 KB (209 words) - 13:43, 1 November 2021
  • Installing 4.2 BSD on SIMH
    ...direct download on sourceforge.net]. To use uudeocde to decode it, simply access the [[boot42|article]], and copy the contents of the quoted text (the begin
    13 KB (2,064 words) - 18:04, 5 August 2017
  • Zork
    /usr/chris/dungeon/dtext.dat Text file in random access-format
    21 KB (3,303 words) - 07:30, 6 September 2023
  • Installing 4.3 BSD on SIMH
    ...uploaded a copy onto this wiki in uuencoded format. To decode it, simply access the [[boot42|article]], and copy the contents of the quoted text (the begin
    14 KB (2,318 words) - 06:15, 1 September 2018
  • Aranym
    *Access to Host OS filesystems using BetaDOS or MiNT native XFS driver
    1 KB (155 words) - 10:09, 16 May 2013
  • History of Zork
    ...with each other, and to use each other's machines. In those halcyon days, access was unrestricted; you could get on from any machine connected to the net, o .... jargon) could somehow be brought to more people. But very few people had access to the large computers that could run Zork. More and more people were begin
    38 KB (6,681 words) - 16:32, 19 December 2018
  • OS/2
    ...] release. IBM had done their best to tune OS/2 to run in 4MB of [[Random Access Memory|RAM]] on a 386SX CPU. Warp also included the 'bonus pack' which inc These are the ones I currently have access to, or directly know about:
    22 KB (3,500 words) - 04:39, 13 January 2024
  • Direct Access Storage Device
    ...'''DASD''', is [[International Business Machines|IBM]] jargon for [[random access]] [[secondary storage]] devices, such as [[floppy disk]]s, hard [[disk]]s,
    277 bytes (37 words) - 14:50, 25 August 2021
  • Solaris
    are available immediately through SunSoft. An early access release of
    10 KB (1,426 words) - 17:55, 13 January 2024
  • Read-only memory
    Unlike [[Random Access Memory|RAM]], ROMs cannot be written to. At one point, ROMs are also typica
    1 KB (179 words) - 12:58, 26 April 2022
  • 386BSD
    They're not totally open access; you have to register with DDJ to get all of them. However, there is this:
    6 KB (725 words) - 17:44, 13 January 2024
  • TCP/IP
    The [[User Datagram Protocol]] is used to provide access to an un-reliable datagram service, for [[application]]s which don't need t
    5 KB (753 words) - 23:02, 29 January 2024
  • 86-DOS
    ...e [[S-100]] type machines, is that unlike the [[IBM PC]] the S-100's could access the full megabyte of RAM. According to Tim Patterson this feature was used
    2 KB (250 words) - 14:07, 22 May 2023
  • TROPIX Manual
    the program to access remote mailboxes "xpop3" and 4: Access to file systems FAT-32 for more than 4 GB.
    91 KB (12,020 words) - 17:55, 13 August 2019
  • Multics
    * Separate [[access control list]]s for each 'file'
    9 KB (1,331 words) - 17:05, 7 March 2024
  • Installing Windows NT 3.1 on Qemu
    With MS-DOS installed and able to access a CD-ROM, you will need a blank floppy image, in addition to either an ISO If you have access to [[Visual C++ 1.1]] or the [[Windows NT 3.1 SDK]] you'll be in luck as yo
    5 KB (947 words) - 11:21, 9 June 2023
  • Installing MS-DOS on Qemu
    ...ts (ones that use TCP/IP are better!), sound settings and of course CD-ROM access. I'll update these topics in the future.
    2 KB (433 words) - 05:16, 3 May 2015
  • Windows NT
    ...3.5 and 3.51 include an update to NT 3.1's NTFS driver to allow NT 3.1 to access an NTFS partition that has been mounted by NT 3.5 or later.
    15 KB (2,465 words) - 20:47, 13 January 2024
  • Windows NT 3.1 HCL
    access as well as for the audio capabilities indicated. The following modems are supported for use with Remote Access Service.
    144 KB (18,526 words) - 03:17, 17 December 2018
  • Windows 3.0
    ...me fun, Murray teased David that David's new Windows 286 (Windows 2.x with access to the 64-KB HMA) was basically a joke. What one really should do was to ge With Windows now running in protected mode, that meant that people would have access to more memory (albeit in 64k chunks as both the 386 & 286 kept the 286's m
    10 KB (1,619 words) - 20:45, 13 January 2024
  • Amiga
    ...a 3000 used ZIP RAM instead of DIP, at the time allowing for faster memory access. However the industry at large would shun the [[ZIP]] chip, and instead mo ...lemented a bit blitter in hardware. The original version of the chip could access 512KB of 'chip RAM', the fat Angus could up that to 1024KB, and the fatter
    13 KB (2,120 words) - 00:41, 17 December 2018
  • Virtual DOS Machine
    ...rdware, emulates the intended function the real-mode program was trying to access, or terminates the real-mode program if it is trying to do something that c ...even checked the drive but simply will not permit the real-mode program to access it. Also, the V86 monitor can do things like map [[main memory]] [[virtual
    4 KB (680 words) - 18:10, 20 February 2024
  • BASIC
    ...Basic were known for needing line numbers, and it allowed direct hardware access via PEEK,POKE keywords. Many of these programs were NOT portable, as the h
    2 KB (358 words) - 04:39, 25 January 2023
  • Intel 80386
    ...lowing for a flat memory space where the entire 4GB of accessible [[Random Access Memory|RAM]] could be accessed without [[segment]]ation. The 386 was introd
    2 KB (372 words) - 01:23, 30 December 2021
  • Intel 80286
    ...it had a 24-bit [[address bus]] to allow access for up to 16MB of [[Random Access Memory|RAM]], and a [[virtual address|virtual]] [[address space]] of 1GB. T
    2 KB (320 words) - 13:35, 3 November 2018
  • Windows NT 3.5 HCL
    access as well as for the audio capabilities indicated. The following modems are supported for use with Remote Access Service, and
    279 KB (34,581 words) - 03:21, 17 December 2018
  • Setting Up Version 1.0 of UNIX/32V Operating System
    devices meant to be used for teletype access should (to should be taken to change the access modes (chmod(1)) on
    24 KB (3,883 words) - 10:33, 6 March 2023
  • A UNIX™ Operating System for the DEC VAX-11/780 Computer
    ...central processor is executing in the context of a process, there are four access privilege modes (user, supervisor, executive, kernel), each with its own st ...e-access port becomes the console. A terminal connected through the remote-access port can halt the central processor, boot it, diagnose it, etc.
    49 KB (7,745 words) - 14:29, 6 May 2023
  • Microsoft Windows-386 Being Delivered With Compaq 80386-Based PCs Through Dec. 31, 1987
    ...lso gives each DOS application up to 640 K random access memory (RAM) plus access to expanded memory through use of a built-in LIM software driver.
    5 KB (748 words) - 18:06, 13 January 2024
  • Commodore A2090 Hard Disk Controller
    with. As far as I know, both SCSI and ST506 access are integrated on the A2090a to J5. However, others have noted the SCSI access circuitry as
    136 KB (31,870 words) - 21:08, 14 January 2024
  • Commodore 128
    ...though effectively 2MHz there as well due to [[wait state]]s to give video access to system bus. In C64 compatibility mode the 8502 dropped down to 1MHz.
    2 KB (244 words) - 14:26, 25 October 2018
  • Setting up the Third Berkeley Software Tape
    ...system generation to the front of the system namelist for quicker access. devices meant to be used for teletype access should (to avoid confusion, no other reason) be named /dev/ttyX, where X
    42 KB (6,834 words) - 03:01, 17 January 2023
  • Intel 4004
    .... It could only [[execute]] code out of [[Read-only memory|ROM]], [[Random Access Memory|RAM]] was only used for storing data, and this complicated the life
    5 KB (796 words) - 16:01, 14 July 2023
  • Random Access Memory
    '''Random Access Memory''' (often given as '''RAM''') is slang term for a computer's [[main ...disk]] [[secondary storage]] (although technically disks are also [[random access]] - unlike, say, [[magnetic tape]] secondary storage).
    457 bytes (64 words) - 13:25, 20 November 2023
  • Dynamic RAM
    '''Dynamic RAM''' ('dynamic random-access memory'), usually abbreviated as '''DRAM''', is currently the ubiquitous [[ ...he idea which led to IBM's 1968 patent on single-transistor dynamic random access memory
    2 KB (240 words) - 02:30, 17 February 2024
  • KDJ11-A CPU
    ...rd), protected by [[parity]]; cache control logic inspects [[Direct Memory Access|DMA]] transfers on the QBUS and invalidates cache entries for [[main memory
    2 KB (355 words) - 21:05, 2 July 2023
  • M782 Interrupt Control
    ...terrupts, or either can be used to provide the device with [[Direct Memory Access|DMA]] capability.
    5 KB (820 words) - 04:04, 28 November 2023
  • 32v 1m lorder
    library suitable for one-pass access by _l_d(1).
    1 KB (152 words) - 16:40, 26 October 2009
  • 32v 1m ls
    -u Use time of last access instead of last modification
    4 KB (571 words) - 16:42, 26 October 2009
  • 32v 1m mount
    must be mounted read-only or errors will occur when access
    1 KB (224 words) - 16:57, 26 October 2009
  • 32v 1m newgrp
    access permissions to files are performed with respect to
    861 bytes (133 words) - 17:03, 26 October 2009
  • 32v 1m pstat
    A access time must be corrected
    6 KB (789 words) - 17:21, 26 October 2009
  • 32v 1m yacc
    ...lared `token names'. This allows source files other than '''y.tab.c''' to access the token codes.
    2 KB (309 words) - 21:34, 26 October 2009
  • TS11 controller
    ...Subsystem]], along with a [[TS04 Tape Transport]]. It used [[Direct Memory Access|DMA]] to transfer both data, and 'command packets', which are commands to t
    3 KB (369 words) - 20:54, 31 December 2023
  • TUK50 Host Adapter Module
    ...ntroller|SPC]] slot. Data is transferred to the host using [[Direct Memory Access|DMA]]; installation of a TUK50 thus requires removal of the [[Non-Processor
    2 KB (363 words) - 15:09, 24 April 2024
  • MSV11-J memory module
    ...ich automagically corrects single-[[bit]] errors (at a slight penalty in [[access time|response time]] when an error occurs), and detects double-bit errors.
    8 KB (1,374 words) - 00:43, 30 July 2023
  • TQK50 Tape Drive Controller
    ...]], the '''M7546'''; data is transferred to the host using [[Direct Memory Access|DMA]].
    1 KB (160 words) - 23:13, 13 November 2022
  • CXY08 8-Line Asynchronous Multiplexer
    ...erface|RS-232]] [[asynchronous serial line]]s. Output used [[Direct Memory Access|DMA]] (with each line having its own [[buffer]] [[pointer]] and count); inp
    2 KB (238 words) - 12:05, 17 February 2023
  • Installing 4.3 BSD+NFS Wisconsin Unix
    ...uploaded a copy onto this wiki in uuencoded format. To decode it, simply access the [[boot42|article]], and copy the contents of the quoted text (the begin
    14 KB (2,267 words) - 16:59, 5 April 2010
  • Installing 4.3 BSD NFS Wisconsin Unix
    ...uploaded a copy onto this wiki in uuencoded format. To decode it, simply access the [[BootHP|article]], and copy the contents of the quoted text (the begin
    15 KB (2,380 words) - 18:46, 28 October 2020
  • TU80 Tape Transport
    ...ssor, a variant of the [[MC6800|6800]] with 128 bytes of internal [[Random Access Memory|RAM]] and an internal [[clock]] oscillator. There were also five [[6
    3 KB (355 words) - 14:55, 22 April 2024
  • Computer Emulation Framework
    ...ns, and watchpoints) instead of writing your own. And the UI provides GUI access to that memory, plus the ability to load/store/modify/examine the memory co
    4 KB (620 words) - 21:10, 14 January 2024
  • DOS extender
    ...3,741,824), and a 24bit memory bus (2^24 is 16,777,216), allowing users to access 16MB of RAM. ...build your applications, link with the DOS Extender and now you could have access to 16MB of RAM!
    5 KB (920 words) - 15:27, 1 January 2019
  • Floppy disk
    ...disks|drives]] were cheap to manufacture; unlike tapes, they are [[random access]]. The media isn't rigid, unlike the [[platter]]s in [[Disk#Recent developm
    5 KB (682 words) - 21:16, 17 July 2022
  • Linux 0.02
    hackers interested in operating systems and 386's with access to minix.
    4 KB (647 words) - 01:24, 20 December 2018
  • Setting Up Unix - Seventh Edition
    devices meant to be used for teletype access should (to should be taken to change the access modes (chmod(1)) on
    27 KB (4,414 words) - 02:56, 17 January 2023
  • Setting up UNIX - Sixth Edition
    teletype access should be named /dev/ttyX, where X is any should be taken to change the access modes (chmod-I) on
    29 KB (3,738 words) - 02:56, 17 January 2023
  • Zork hints
    granite is a verb! how to use it? should give access to thief's hideout from to remove it and provide access to the Volcano. Be sure
    23 KB (3,755 words) - 03:51, 17 December 2018
  • RA81 Disk Drive
    <!-- | average access time = xx msec --> It had two heads per surface; not rotationally opposed (to halve maximum access time), but two on each arm; there thus 2,516 usable tracks on each data sur
    4 KB (542 words) - 03:16, 31 August 2023
  • Installing NetBSD 5.0.2 on the SIMH MicroVAX II
    We recommend creating a non-root account and using su(1) for root access.
    8 KB (1,125 words) - 02:02, 18 November 2010
  • NetBSD 0.8 announcement
    one of the files is corrupt and have access to a
    34 KB (5,687 words) - 18:11, 16 December 2018
  • NetBSD 0.9 announcement
    io port access from user processes doesn't randomly work/fail. now must open /dev/mem to get access. (cgd)
    29 KB (4,794 words) - 18:15, 16 December 2018
  • Darwin 7.0.1 Release notes
    project and access to its works are open to everyone. The project is
    12 KB (1,841 words) - 06:06, 16 December 2018
  • Darwin 8.0.1 Release notes
    project and access to its works are open to everyone. The project is
    12 KB (1,699 words) - 06:06, 16 December 2018
  • Emu8080
    .../M]]! The [http://www.tramm.li/i8080/ project homepage is here], while to access it, just click [http://www.tramm.li/i8080/emu8080.html here].
    5 KB (150 words) - 14:40, 24 April 2024
  • 386BSD 0.0 announcement
    their inability to obtain access to 386BSD, whether licensed with, interested parties could have access to SUPPORTED ver-
    25 KB (3,920 words) - 05:43, 15 July 2019
  • FreeBSD 1.0 GAMMA announcement
    If you do not have access to the internet and electronic mail is your
    10 KB (1,541 words) - 15:59, 16 December 2018
  • Unix SYSVr2
    Someone gave me access to a SYSVr2 machine!..
    2 KB (225 words) - 04:17, 17 December 2018
  • Seagate ST1144A
    Seagate's 800 number allows toll-free access to automated self-help CompuServe. To access our technical support forum, type go seagate.
    25 KB (3,017 words) - 18:47, 13 January 2024
  • Installing Windows NT 3.1 on Qemu-legacy
    With MS-DOS installed and able to access a CD-ROM, you will need a blank floppy image, in addition to either an ISO If you have access to Visual C++ 1.0 32bit you'll be in luck as you can rebuild a few things.
    6 KB (997 words) - 11:22, 9 June 2023
  • Clipper Summer 1987
    ...of shipping [[database]] [[application]]s prior to the rise of [[Microsoft Access]]. Clipper applications ran under [[MS-DOS]]. As time went by there were e
    566 bytes (85 words) - 18:37, 18 December 2018
  • RP07 Disk Drive
    RP07: 516 MB HD, 1300 KB/s, 31.3 average access, 23 ms average seek, 5 ms track-to-track seek time, 3633 rpm
    787 bytes (114 words) - 03:21, 11 November 2023
  • RM02/03 disk drive
    | average access time = 42.5 msec (RM02)<br>38.3 msec (RM03)
    4 KB (533 words) - 17:08, 15 August 2023
  • RM05 Disk Drive
    ...6 MB [[MASSBUS]] [[removable-pack disk]] drive, 1200 KB/s, 31.3 ms average access time, 23 ms average seek time, 6 ms track-to-track seek, 3600 RPM. It was [
    1 KB (177 words) - 18:09, 15 August 2023
  • RP06 disk drive
    | average access time = 38.3 msec ...rives were supported per controller; drives could be dual-ported, to allow access from two different controllers.
    2 KB (297 words) - 00:39, 15 August 2023
  • RA60 Disk Drive
    | average access time = 50.3 msec
    4 KB (524 words) - 10:36, 31 August 2023
  • RA70 disk drive
    | average access time = 27 msec
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  • RA80 Disk Drive
    | average access time = 33 msec It had two heads per surface; not rotationally opposed (to halve maximum access time), but two on each arm; there thus 1,092 usable tracks on each surface.
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  • RM80 Disk Drive
    | average access time = 33.3 msec It had two heads per surface; not rotationally opposed (to halve maximum access time), but two on each arm; there were thus 1,122 usable tracks on each dat
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  • RA82 disk drive
    | average access time = 32.3 msec It had two heads per surface; not rotationally opposed (to halve maximum access time), but two on each arm; there thus 2,846 usable tracks on each data sur
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  • RD54
    random access storage devices utilizing nonremovable 5 -inch disks as storage media. Each disk surface employs one movable head to access
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  • RX50 dual-diskette drive
    | average access time = 164 msec
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  • TU58 DECtape II
    Average access time using [[random access]] was 9.3 seconds; maximum was 28. Data was verified by a [[checksum]] on e
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  • DECtape II
    '''DECtape II''' was a low-cost, low-performance [[random access]] [[magnetic tape]] [[secondary storage]] system, proprietary to [[Digital
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  • TU81 Streaming Tape Unit
    ...ssor, a variant of the [[MC6800|6800]] with 128 bytes of internal [[Random Access Memory|RAM]] and an internal clock oscillator. There was also a [[6821 PIA|
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  • TPA-11/580
    ...pment team didn't have a machine to examine, they used what they could get access to, so the process took rather long time.
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  • UNIX V6 memory layout
    ...ter which process is running. The other special segment is set up to allow access to the [[UNIBUS]]'s so-called 'I/O Page', which holds [[peripheral]] and [[ ...swappable per-process data of each process, and the 8th is set up to allow access to the UNIBUS 'I/O Page'.
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  • Setting up (BSD 4.0) the Fourth Berkeley Software Tape
    the system namelist for quicker access. taken to change the access modes (chmod(8)) on these files
    57 KB (8,582 words) - 03:00, 17 January 2023
  • Bug fixes and changes in 4.1bsd
    ports concurrent read and write access to files (see mt Is a new command which provides easy access to
    39 KB (5,307 words) - 05:01, 11 December 2018
  • INTEL 80386 PROGRAMMER'S REFERENCE MANUAL
    6.3.2 Restricting Access to Data 3-17 Variable Access in Nested Procedures
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  • IBM OS2 1.0 announcement
    o 16MB Addressable Random Access Memory Support 16MB Addressable Random Access Memory Support
    50 KB (7,113 words) - 03:35, 17 December 2018
  • Inside OS/2
    2.1.7 Direct Device Access 8.2 Network Access
    627 KB (92,395 words) - 03:42, 17 December 2018
  • Suspended (game)
    ...ms, including the ones that are in the section that requires the wedge for access.
    5 KB (765 words) - 19:00, 26 December 2016
  • Installing Ultrix 4.5 on SIMH
    ==Enabling outside access== To enable root access for all telnet sessions, you will have to edit the /etc/ttys file and chang
    44 KB (6,192 words) - 09:30, 29 September 2023
  • LSI-11
    ...KD11-F version includes 4KW of [[Metal Oxide Semiconductor|MOS]] [[Random Access Memory|RAM]] on-board; the KD11-H version has the RAM deleted.
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  • KUV11 Writeable Control Store
    ...ead-only memory|ROM]] [[chip socket]] on the CPU card, and gives the KUV11 access to the micro-instruction [[bus]]. ...able, but has read-write access to it via the QBUS. That bus also provides access to a number of control [[register]]s on the KUV11.
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  • QBUS memories
    * [[MSV11-L MOS Random-Access Memory‎|MSV11-L]] - (M8059) * [[MSV11-P MOS Random-Access Memory‎|MSV11-P]] - (M8067)
    5 KB (835 words) - 02:21, 20 September 2022
  • Md5.c
    ** -- Access pattern: round 2 works mod 5, round 3 works mod 3 **
    19 KB (2,156 words) - 04:05, 17 December 2018
  • Installing 4.1c BSD on SIMH
    ...uploaded a copy onto this wiki in uuencoded format. To decode it, simply access the [[boot42|article]], and copy the contents of the quoted text (the begin
    13 KB (2,077 words) - 16:30, 7 August 2017
  • UNIX* System V and 4.1C BSD
    6.1.2 Faster access........................ 27 permits access to the O_NDELAY (non-blocking I/O)
    113 KB (13,419 words) - 02:06, 17 December 2018
  • MM11-L core memory
    ...s the components for the two parity bits.) Enabling parity increased the [[access time]] from 400 nsec to 525 nsec.
    5 KB (841 words) - 07:14, 25 March 2022
  • RK02/03 disk drive
    | average access time = 70 msec
    2 KB (259 words) - 00:29, 15 August 2023
  • Modified UNIBUS Device
    ...e C-F connectors (needed for signals for [[interrupt]]s or [[Direct Memory Access|DMA]], for devices which did those), with most UNIBUS signals present in bo
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  • KL10
    ...tachment of [[main memory]] units, while the C Bus allowed [[Direct Memory Access|DMA]] accesss to main memory.
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  • SS-50 bus
    ...ats the address and data buses and the R/W line. External devices can then access memory for DMA, for example
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  • KDJ11-B CPU
    ...ts of tag fields for each cache entry, so that the CPU and [[Direct Memory Access|DMA]] from the QBUS can interact with the cache simultaneously. Cache contr
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  • KTJ11-B UNIBUS adapter
    As a further feature, on most UNIBUS backplanes, the 'NPG' ([[Direct Memory Access|DMA]] grant line) signal is carried across unused slots by wire jumpers on
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  • Private Memory Interconnect
    ...a KTJ11-B, it provides means for UNIBUS devices to perform [[Direct Memory Access|DMA]] cycles (mapped to the full 22-bit address space via a [[UNIBUS map]]) | CD1 || PUBMEM || CPU access to UNIBUS
    4 KB (731 words) - 17:11, 6 February 2024
  • KT11-B Paging Option
    Individual pages may be marked 'Private', which means that only access from code running in Private pages is allowed; i.e. information in such pag ...p page has to contain 16 entries (8 Kbytes at 512 bytes per page) to allow access to the device registers (if they are to appear in the same place in the add
    15 KB (2,571 words) - 22:23, 11 October 2022
  • PDP-11 Memory Management
    ...PDR contains the segment's length, along with the direction of growth, the access control field (read/only, read/write, etc), a 'dirty' bit (maintained by th ...th || Trapped || Written || colspan=2 | Unused || Direction || colspan=3 | Access Control
    9 KB (1,311 words) - 18:10, 2 July 2023
  • UNIBUS map
    ...'UNIBUS map''' to allow [[Direct Memory Access|DMA]] devices on the UNIBUS access to all of main memory.
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  • Virtual memory
    ...ory, to perform the relocation function. The pager sometimes needed direct access to the internals of the CPU, to properly perform the demand loading functio
    5 KB (876 words) - 20:01, 22 January 2024
  • KA11 CPU
    ...ecture#Addressing modes|operand modes]] other than mode 0, direct register access (for which, as previously mentioned, the Source or Destination major state
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  • KT11-B Technical Manual
    ...1-B does not contain any internal registers to which the CPU does not have access, the term 'register' hereinafter refers to any of the registers in the KT11 * ENB SPOR(3) (6-1): Select scratchpad register for UNIBUS access
    31 KB (4,983 words) - 18:22, 2 July 2023
  • RX01/02 floppy drive
    | average access time = 262 ms The average access time of 262 ms is computed as follows:
    8 KB (1,195 words) - 20:09, 15 August 2023
  • DMA
    #Redirect [[Direct Memory Access]]
    34 bytes (4 words) - 02:37, 7 November 2016
  • Direct Memory Access
    '''Direct Memory Access''', usually abbreviated as '''DMA''', refers to a now-very-common technique ...e. In the second, the memory has multiple ports, and the device has direct access to the memory via one of the ports.
    751 bytes (125 words) - 23:08, 20 October 2021
  • MASSBUS
    The control section is used to allow the [[Central Processing Unit|CPU]] access to device registers implemented in the devices. The data section is 18 (opt
    5 KB (729 words) - 21:36, 2 December 2023
  • RK11-C disk controller
    ...er-run errors when there was considerable competing UNIBUS [[Direct Memory Access|DMA]] traffic.
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  • LINC tape
    LINC tape was random access, so the drive had the ability to move forward and backwards to the desired * Severo M. Ornstein, [https://archive.computerhistory.org/resources/access/text/2019/03/102785079-05-01-acc.pdf ''Computing in the Middle Ages: A View
    3 KB (519 words) - 02:13, 28 February 2024
  • LINC-8
    ...access to the PDP-8's [[main memory]] (the LINC acted as a [[Direct Memory Access|DMA]] peripheral to the PDP-8, using the PDP-8 [[data break]] mechanism). A ...code running in the LINC access to PDP-8 resources; the PDP-8 likewise had access to the resources of the LINC (e.g. the display). When the PDP-8 was in cont
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  • DECtape
    DECtape was [[random access]], so the [[magnetic tape drive|drive]] had the ability to move forward and
    5 KB (736 words) - 14:21, 30 May 2022
  • Core memory
    ...nd [[drum]]scould have slow [[access time]]s, since they were not [[random access]]). ...solved all these problems. It was reliable, relatively cheap, fast, random access, and compact (by the standards of the day) - everything that one could want
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  • Main memory
    Main memory is also used to store data for immediate access by the CPU. Computers which keep instructions and data in the same memory a
    2 KB (250 words) - 17:10, 11 September 2019
  • RAM
    #REDIRECT [[Random Access Memory]]
    34 bytes (4 words) - 05:21, 12 November 2016
  • Random access memory
    #Redirect [[Random Access Memory]]
    34 bytes (4 words) - 05:21, 12 November 2016
  • MK11 memory system
    ==CSR Access== ...them. That is to use the [[UNIBUS map]] (usually used for [[Direct Memory Access|DMA]] cycles from [[peripheral|device]]s to main memory); the [[memory mana
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  • Microcode
    ...was a [[diode]] matrix), some later computers included high-speed [[Random Access Memory|RAM]] for part of the control store, so that the instruction set cou
    6 KB (853 words) - 14:25, 22 January 2024
  • BSD Fast File System
    ...e 'super block'. So a particular FFS partition might be optimized for fast access, or for minimum wasted space.
    11 KB (1,759 words) - 19:20, 12 June 2023
  • MB20 core memory
    ...mum of 512KW; [[parity]] is provided to protect the memory contents. The [[access time]] is 1.04 µseconds, and the [[cycle time]] is 1.92 µseconds (both fo
    2 KB (256 words) - 04:17, 1 August 2023
  • DH11 asynchronous serial line interface
    ...ovides up to 16 [[asynchronous serial line]]s. Output used [[Direct Memory Access|DMA]] (with each line having its own [[buffer]] [[pointer]] and count); on
    10 KB (1,443 words) - 02:27, 19 February 2023
  • Non-Processor Request and Grant
    ...trol of the UNIBUS's data section so that it may perform a [[Direct Memory Access|DMA]] cycle.
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  • DR11 parallel interface
    ...s of [[parallel interface]]s for the [[UNIBUS]]. Some used [[Direct Memory Access|DMA]], others were [[programmed I/O]]. * [[DR11-W Direct Memory Access Interface|DR11-W]]: hex single-board replacement for the DR11-B
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  • Programmed I/O
    ...ction]]s performed by the CPU to move data - as opposed to [[Direct Memory Access|DMA]], in which the [[peripheral|device]] communicates directly with [[main * [[Direct Memory Access]]
    1 KB (192 words) - 23:12, 20 October 2021
  • DR11-B parallel interface
    ...[[parallel interface]] for the [[UNIBUS]], one which used [[Direct Memory Access|DMA]] to transfer data to a user device.
    5 KB (766 words) - 03:15, 25 November 2022
  • Cache
    ...artial copy of a larger collection of data, implemented in such a way that access to the data copy in the cache is faster than to that in the large, full sto
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  • MM11-D core memory
    ...ing|interleave]] a pair of MM11-D's to provide reduced effective average [[access time]]s.
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  • Bus grant
    ...o that the device can either start an [[interrupt]], or do [[Direct Memory Access|DMA]] transfer(s) to [[main memory]].
    1 KB (194 words) - 18:42, 11 November 2019
  • Bus grant line
    ...ce controller]]s that their request for [[interrupt]]s and [[Direct Memory Access|DMA]] have been [[bus grant|granted]] (hence the name).
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  • NORD-TSS
    * Has a general purpose [[file system]] with various types of access and protection modes * Has a Monitor Call System to provide user access to input / output functions, string functions, formatting routines and file
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  • NORDIC
    * two NCR Dual Disc units with capacity of 8 million 16 bit word, average access time 45 ms * one Vermont drum, capacity 256K 16 bit words, access time 10 ms average
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  • UNIX file system
    ...), the owner of the file, the file's protection, and last modification and access times, etc.
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  • FPJ11 floating point accelerator
    ...AB. DEC had a number of problems with 'corner cases' (e.g. [[Direct Memory Access|DMA]] during certain floating point instructions), and had to issue revised
    2 KB (276 words) - 21:06, 2 July 2023
  • Address Resolution Protocol
    With the advent of the 10 Mbit/second Ethernet, which had 48-bit [[Media Access Control Address|physical addresses]] (so that all Ethernet [[network interf
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  • Ethernet
    The 48-bit physical address of the DIX Ethernet is known as the [[Media Access Control Address]] (short form: 'MAC Address' or just: 'MAC'), sometimes 'Et Originally, Ethernet was a [[Carrier-Sense Multiple Access with Collision Detection]] (CSMA-CD) [[bus]] (i.e. a shared [[broadcast]] c
    8 KB (1,199 words) - 22:00, 5 October 2023
  • Register
    ...]]s usually include registers too. For the ones which are part of the CPU, access to them is very fast - usually faster than main memory.
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  • Single-level store
    ...h, information may be in [[main memory|primary storage]] (usually [[Random Access Memory|RAM]]) or in [[secondary storage]] (usually [[disk]]), and the [[ope
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  • Honeywell 6000 series
    ...[[multi-processor]], with all the [[Central Processing Unit|CPUs]] sharing access to a collection of [[multi-port memory]] units. All used 36-bit [[word]]s,
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  • Drum
    ...sters in each track, and using multiple heads on that track to give faster access to the contents of the registers.
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  • File
    ...ke an effort to keep the blocks of a file in close physical proximity, for access speed reasons.)
    906 bytes (151 words) - 23:06, 16 December 2018
  • RP04 disk drive
    | average access time = 36.3 msec
    2 KB (284 words) - 19:38, 23 December 2023
  • RP03 disk drive
    | average access time = 41.5 msec
    2 KB (233 words) - 20:45, 10 February 2024
  • RH11 MASSBUS controller
    ...rds.) The RH11 can be set under [[software]] control to do [[Direct Memory Access|DMA]] data transfers on either the first or second UNIBUS (UNIBUS 'B'). ...UNIBI together. (E.g. in the 'disk' RH11 in the KS10, where the CPU needs access to the device registers, interrupts, etc, which are on UNIBUS 'A', but also
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  • KS10
    ...upports [[interrupt]]s from the UNIBUS adapters, as well as [[diagnostic]] access from the mandatory 'console' subsystem, which is interfaced to the KS10 bus ...e UNIBUS [[address space]] into the KS10's main memory for [[Direct Memory Access|DMA]] operations.
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  • Condition handler
    ...ntage that if a handler is inside a procedure, the handler can easily have access to that procedure's [[automatic variable]]s. (It is hard to do both of thes
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  • PDP-15
    ...er PDP-11-native peripherals could be supported, including [[Direct Memory Access|DMA]] directly into the PDP-15's memory through the [[MX15-B Memory Multipl
    4 KB (591 words) - 13:40, 11 July 2023
  • RP02 disk drive
    | average access time = 62.5 msec
    2 KB (299 words) - 20:41, 10 February 2024
  • RH70 MASSBUS controller
    ...es from the device), as well as to the [[UNIBUS]] (for [[interrupt]]s, and access to the device's [[register]]s by the [[Central Processing Unit|CPU]]). ...eads and writes go directly to the actual main memory (although the RH70's access to the main memory bus is controlled by the cache). A write to a main memor
    2 KB (318 words) - 15:45, 25 February 2022
  • BA11-C Mounting Box
    ...e backplane wiring for [[debug]]ging. The unit could rotate to give easier access to the boards.
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  • FP11-A Floating-Point Processor
    ...nect to the M8267 card. (This is all necessitated because the FP11-A needs access to signals carried over the maintenance cables.) ...M8267 card is normally placed on a hex [[extender card]] to allow physical access to internal signals, a special W9042 Extender Board exists, to be used in p
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  • PDP-9
    ...cess]] Channel Multiplexor Adapter provided high-speed devices with direct access to main memory for data transfers.
    6 KB (801 words) - 22:14, 9 February 2024
  • Compatible Time-Sharing System
    CTSS provided access to users on terminals connected to [[asynchronous serial line]]s, both loca
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  • Semiconductor
    ...l [[main memory]] was [[core memory]], so the term 'semiconductor [[Random Access Memory|RAM]]' was used to indicate the use of ICs to actually hold data.
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  • Modem
    ...er [[telephone]] lines were the most common. With the rise of [[Internet]] access over [[cable TV]], cable TV modems became common.
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  • UNICHANNEL 15 System
    ...PDP-15's [[Central Processing Unit|CPU]], but also to allow PDP-15 systems access to devices which did not have native PDP-15 support, such as the [[RK05 dis ...CPU, and [[Direct Memory Access|DMA]] devices on the PDP-11's [[UNIBUS]]) access to the PDP-15's [[main memory]].
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  • MX15-B Memory Multiplexer
    ...15 [[main memory]] attached to the MX15-B, and also allowed the PDP-15 CPU access to both the PDP-11's memory, and that PDP-15 memory - i.e. it turned both m
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  • Chaosnet
    The LAN was a [[Carrier-Sense Multiple Access with Collision Detection|CSMA-CD]] system modeled on the [[Xerox PARC]] 3 m ...to provide [[mapping]]s from 16-[[bit]] Chaos [[address]]es to the [[Media Access Control Address‎|48-bit addresses]] used by Ethernet.)
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  • ARPANET
    ...hich could be attached [[terminal]]s, which allowed users at the terminals access to the hosts attached to the ARPANET.
    4 KB (659 words) - 15:40, 17 March 2024
  • Able ENABLE
    ...nt, containing the [[Central Processing Unit|CPU]] and all [[Direct Memory Access|DMA]] [[peripheral controller|devices]], and ran all read-write cycles from The ENABLE, being a UNIBUS device, had access to none of the information about CPU mode, fetch type, etc. Instead, the EN
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  • Maxc
    ...'''Maxc2''' (originally capitalized '''MAXC''' - an acronym for 'Multiple Access Xerox Computer') were a pair of [[PDP-10]] clones made at [[Xerox PARC]], a
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  • DL10 PDP-11 Data Link
    ! Access
    5 KB (664 words) - 17:27, 7 November 2023
  • Rubin 10-11 interface
    ...the connected UNIBI. As far as is known, the other machine(s) did not have access to the KA10's memory (unlike with the [[DL10 PDP-11 Data Link|DL10]] and [[ ...age contained the mapping registers, below; unusually for a PDP-10 device, access to its [[register]]s was via the PDP-10 memory bus.) Each Rubin interface p
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  • VT52
    ...crocode]]. The [[data path]] is 7 bits wide, as is the 2048-word [[Random Access Memory|RAM]]. The predecessor VT50 is almost identical, except there is on
    4 KB (577 words) - 12:26, 16 January 2024
  • UNIBUS Experimental Ethernet interface
    ...l Ethernet]]s. It was a [[full-duplex]] device, which used [[Direct Memory Access|DMA]] to transfer [[packet]]s directly to and from [[main memory]]. ...today's standards) was that the back-off after a [[Carrier-Sense Multiple Access with Collision Detection‎|collision]] was implemented by [[software]], in
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  • Carrier-Sense Multiple Access with Collision Detection
    ...ion''' (often given as the acronym, '''CSMA-CD''') is a way of controlling access to a [[Local area network|LAN]] using a [[broadcast]] bus (i.e. a shared br
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  • Berkeley Time-Sharing System
    ...located]] to any location in [[main memory]] (either for normal read/write access, or read-only).
    4 KB (603 words) - 14:51, 11 June 2023
  • DRV11 parallel interface
    ...ies of [[parallel interface]]s for the [[QBUS]]. Some used [[Direct Memory Access|DMA]], others were [[programmed I/O]]. * [[DRV11-B Direct Memory Access Interface|DRV11-B]]: DMA, quad card, 18-bit DMA addresses
    888 bytes (136 words) - 13:56, 9 June 2020
  • Mass storage
    ...always has a high-speed [[channel]] or some other form of [[Direct Memory Access]] to transfer data quickly to the computer to which it is attached.
    514 bytes (80 words) - 16:42, 3 May 2023
  • RX11 floppy disk controller
    | 0040 || Tried to access a track greater than 77
    4 KB (516 words) - 14:50, 6 November 2022
  • RX211 floppy disk controller
    They have an identical programming interface; both use [[Direct Memory Access|DMA]] to transfer information between [[main memory]] and the floppy. | 0040 || Tried to access a track greater than 76
    4 KB (536 words) - 15:06, 6 November 2022
  • Peripheral
    ...y, their controllers) may use either [[programmed I/O]] or [[Direct Memory Access|DMA]] to get data in and out of the [[Central Processing Unit|CPU]] and/or
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  • Front end
    ...can communicate with the main CPU in a number of ways. It may have direct access to the [[main memory]] used by the main CPU, a technique used in the PPUs o
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  • Xerox PARC
    ...t-mapped display]] to which the [[Central Processing Unit|CPU]] had direct access, and deployed a group of them in a network/server environment; having so mu
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  • Xerox Alto
    ...de words were 32 bits wide), and eventually also 1KW of writeable [[Random Access Memory|RAM]] microcode memory. (The basic ROM microcode more or less emulat ...s, allowing their [[register]]s to appear in the memory address space, for access by [[programmed I/O]]; the last two 'pages' (nothing to do with [[virtual m
    6 KB (863 words) - 22:39, 3 October 2023
  • Multi-port memory
    ...(typically [[Central Processing Unit|CPUs]], [[channel]]s, [[Direct Memory Access|DMA]] [[device controller]]s, etc). If there are multiple banks in the memory, then as long as access requests are spread out fairly evenly across them, it may be possible to pe
    1 KB (192 words) - 16:36, 15 December 2018
  • UNIVAC I
    | instruction speed = 120 μsec (add, excluding memory access) <!-- 525 μsec max --> ...]], with 1000 [[word]]s organized as 100 lines of 10 words each (to reduce access times over fewer, larger lines). The [[Central Processing Unit|CPU]] operat
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  • Multi-processor
    ...re a tremendous range of designs, from 'tightly-coupled' (where they share access to some [[main memory]], which usually has to be [[multi-port memory]]), on
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  • KD11-Z CPU
    ...s, but not address lines); [[Direct Memory Access|DMA]] devices could gain access to the memory via a [[UNIBUS map]] which connected the two, and mapped UNIB
    4 KB (668 words) - 15:59, 6 February 2024
  • KB11-B CPU
    ...to a separate [[UNIBUS]]; [[Direct Memory Access|DMA]] devices could gain access to the memory via a [[UNIBUS map]] which connected the two, and also mapped
    3 KB (456 words) - 21:08, 2 July 2023
  • Direct memory access
    #Redirect [[Direct Memory Access]]
    34 bytes (4 words) - 16:43, 14 May 2018
  • SITS
    ...[[Multics]]-like tree structured file system including (potentially) full access control. It also provides unique capabilities for running programs as multi
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  • MS11 32KB MOS memory
    The [[access time]] is 550 nsec (1250 nsec maximum on [[memory refresh]] conflict), and
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  • MS11-L MOS memory
    The [[access time]] is 385 nsec (typical; 1025 nsec maximum on [[memory refresh]] confli
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  • Video terminal
    Once [[semiconductor]] [[Random Access Memory|RAM]] prices fell low enough, they were replaced with [[bit-mapped d
    2 KB (302 words) - 02:25, 21 February 2024
  • Bit-mapped display
    Originally, before [[semiconductor]] [[Random Access Memory|RAM]] prices fell, bit-mapped dislays provided fewer bits per pixel;
    3 KB (448 words) - 12:21, 27 February 2024
  • MM11-E and MM1-F core memories
    ...ss time]] of 500 nsec and a [[cycle time]] of 1.2 μsec; the MM11-F had an access time of 400 nsec and a cycle time of 980 nsec.
    4 KB (667 words) - 19:53, 30 July 2023
  • National Semiconductor NS405 and NS455 Terminal Management Processor
    ...line interface#Electrical|EIA]] signal levels are required, as is [[Random Access Memory|RAM]] to hold the screen contents, though.
    1 KB (164 words) - 04:42, 27 February 2023
  • VT11 Graphic Display Processor
    ...Corporation|DEC]]. It was a [[UNIBUS]] device, which used [[Direct Memory Access|DMA]] to retrieve [[display program]]s from [[main memory]]. It was intende
    2 KB (233 words) - 12:42, 27 February 2024
  • PARC Universal Packet
    ...ding protocols for printer spooling, copying disk packs, page-level remote access to file servers, name lookup, remote management, etc (although some of thes
    6 KB (926 words) - 16:27, 11 May 2023
  • Cycle time
    ...'''cycle time''' of the memory is the time period between the start of one access cycle, and the point in time when the memory is ready to accept another one * [[Access time]]
    1 KB (230 words) - 02:11, 20 September 2022
  • Access time
    ...etimes '''response time''') is the time period between the start of a read access cycle, and the point in time when the data is returned to the requestor. ...n the request arrives, that can delay the memory's response - and thus the access time for that particular cycle.
    690 bytes (113 words) - 02:11, 20 September 2022
  • Kernel
    ...kernel might be 'paged'. Generally, even the higher layers will still have access to operations which ordinary user code is not allowed to use.
    1 KB (230 words) - 14:11, 29 January 2022
  • Multi-user
    ...ot all at the same time. Depending on the OS in use, and the settings of [[access control]] parameters (for OS's which have them),the system might prevent on
    686 bytes (108 words) - 01:36, 16 December 2018
  • Response time
    #Redirect [[Access time]]
    25 bytes (3 words) - 13:39, 6 July 2018
  • MS11-P MOS memory
    ...utomagically corrects single-[[bit]] errors, <!--(at a slight penalty in [[access time|response time]] when an error occurs)--> and detects double-bit errors The [[access time]] is 490-535 nsec (read, typical/max; 215-230 nsec extra on error), 10
    2 KB (345 words) - 17:10, 18 August 2023
  • Memory interleaving
    ...ies which have a [[cycle time]] which is significantly longer than their [[access time]]. (The classic example is [[core memory]], which inherently has a muc ...A+1 goes to the other. It was not unknown for interleaving to decrease the access time for a second word by up to 50%, a very significant savings. This is ca
    2 KB (349 words) - 23:12, 29 July 2023
  • MMV11-A QBUS core memory
    An MMV11-A holds 8K [[byte]]s; it has an [[access time]] of 425 nsec, and a [[cycle time]] of 1.15 μsec.
    2 KB (372 words) - 19:26, 13 July 2023
  • C Changes
    use `u.i'. It is undefined to store into u.d and then to access
    9 KB (1,418 words) - 14:55, 16 January 2023
  • OMNIBUS
    * '''''Data break transfers''''', the PDP-8 term for [[Direct Memory Access|DMA]].
    2 KB (325 words) - 04:52, 19 September 2021
  • FPP8/A Floating Point Processor
    ...not part of the [[Central Processing Unit|CPU]], but used [[Direct Memory Access|DMA]] for its [[instruction]]s and data.
    680 bytes (114 words) - 22:25, 22 November 2019
  • Database
    ...he [[software]] which is used to handle and organize the data, and mediate access to it, is usually called a database management system, usually given as a '
    376 bytes (61 words) - 14:07, 24 April 2024
  • CDC 6600
    ...that was left to a set of ten 'Peripheral Processing Units', which shared access to the [[main memory]] (which had a 32-way [[memory interleaving|interleave
    6 KB (789 words) - 17:26, 22 January 2024
  • IBM 650
    ...nd ran at 12,500 RPM; with a complete rotation time of 4.8 msec, average [[access time]] was thus 2.4 msec (although [[optimum programming]] would reduce tha ...g/pdf/ibm/650/22-6270-1_RAM.pdf 650 Data-processing System with 355 Random Access Memory - Manual of Operation] - system with disk drive(s)
    4 KB (620 words) - 21:08, 18 March 2024
  • Williams tube
    ...age over the other two was that it was [[random access]]; the time to gain access to any particular bit was constant.
    2 KB (354 words) - 15:57, 14 March 2024
  • Delay line
    ...were cheap and simple, they had one large drawback; they were not [[random access]]. If the computer needed a value that had just been sent into the delay li
    2 KB (290 words) - 20:29, 18 March 2024
  • IBM 7070
    ...cluding a 'next [[address]]' field, which was not needed with the [[random access]] [[core memory]] of the 7070. The incompatability with the 705 was harder ...the same two data channels. Each disk had three sets of heads, to minimize access time.
    3 KB (478 words) - 14:49, 9 April 2024
  • Random access
    ...go to disparate [[address]]es without significant delays; in '''sequential access''' memories, only successive operations to following locations can be done
    834 bytes (110 words) - 01:56, 24 December 2018
  • Sequential access
    #Redirect [[Random access]]
    27 bytes (3 words) - 15:52, 10 October 2018

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