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  • VAX
    ...eXtension') for a family of computers from [[Digital Equipment Corporation|DEC]]. They were the successors to the [[PDP-11]] series of [[minicomputer]]s. * [[:Category:DEC VAX systems|DEC VAX systems]]
    3 KB (388 words) - 16:50, 22 April 2024
  • QBUS
    ...the [[UNIBUS]] general system [[bus]] from [[Digital Equipment Corporation|DEC]]. It was widely used in later [[PDP-11]]s and smaller [[VAX]]en. ...and address lines 0 through 12 to recognize their address(es). (Some QBUS CPUs do not even drive the high address lines during references to the I/O page.
    13 KB (2,043 words) - 23:27, 14 January 2024
  • PDP-11/34
    The '''PDP-11/34''' was [[Digital Equipment Corporation|DEC]]'s lower-cost replacement to the [[PDP-11/40]] as the low-end [[PDP-11]] s ...UNIBUS and QBUS termination|termination and pull-ups]] (unusual for PDP-11 CPUs); this is almost certainly the reason that the manual calls for the use of
    4 KB (536 words) - 19:28, 8 February 2024
  • PDP-11/45
    | manufacturer = [[Digital Equipment Corporation|DEC]] ...or [[KB11-D CPU]] (later units) high-performance [[Central Processing Unit|CPUs]], implemented in [[SSI]] [[Schottky TTL]] logic.
    6 KB (895 words) - 23:52, 29 February 2024
  • PDP-11 architecture
    ...f 16-[[bit]] [[minicomputer]]s designed by [[Digital Equipment Corporation|DEC]], in production from 1970-1990. Although the basic [[address space]] was 1 ...P-11/34]], [[PDP-11/44]] and [[PDP-11/23]]; it was standard in the [[KDJ11 CPUs]] (although in these machines an optional [[FPJ11 floating point accelerato
    13 KB (1,949 words) - 17:37, 29 February 2024
  • VAX-11/782
    ...cessor]] [[VAX]]; it had two [[KA780 CPU|KA780]] [[Central Processing Unit|CPUs]] connected to up to four [[MA780 Multiport Memory Option|MA780]] [[multi-p * [http://www.bitsavers.org/pdf/dec/vax/handbook/VAX_Hardware_Handbook_Volume_1_1986.pdf VAX Hardware Handbook
    3 KB (420 words) - 09:14, 15 July 2023
  • VMS
    ...and [[Windows]], VMS Software, Inc. (which is the current owner of most of DEC's assets) has a hobbyist program which allows licenses to be obtained for n ...vms-hw.html VAX/VMS Versions] - "which VMS versions are supported on which CPUs"
    2 KB (335 words) - 10:03, 27 April 2024
  • KD11
    ...[[Digital Equipment Corporation|DEC]] [[PDP-11]] [[Central Processing Unit|CPUs]]:
    658 bytes (116 words) - 02:18, 24 February 2019
  • MicroVAX I
    ...st of a number of [[MicroVAX]] models from [[Digital Equipment Corporation|DEC]]. It used the [[QBUS]] as its primary [[bus]] between the [[Central Proces Last interactive login on Saturday, 3-DEC-2022 17:59
    10 KB (1,525 words) - 21:20, 10 January 2024
  • PDP-10
    ...word]] [[mainframe]]-like systems built by [[Digital Equipment Corporation|DEC]]. They were basically a re-implementation of the earlier [[PDP-6]] [[instr ...ailable in [[multi-processor]] versions with two [[Central Processing Unit|CPUs]].
    11 KB (1,640 words) - 20:59, 8 March 2024
  • Bus
    Some time after this, some computers began to share memory between several CPUs. On these computers, access to the bus had to be prioritized, as well. [[Digital Equipment Corporation|DEC]] noted that having two buses seemed wasteful and expensive for small, mass
    14 KB (2,170 words) - 05:09, 5 September 2019
  • VAX-11/785
    ...upgraded version of the [[VAX-11/780|/780]]; its [[Central Processing Unit|CPUs]] used [[Advanced Schottky]] [[logic]]. A /780 could be upgraded to a /785 * [http://www.bitsavers.org/pdf/dec/vax/785/ 785] - documentation on [[BitSavers]]
    2 KB (193 words) - 04:26, 13 January 2024
  • FLIP CHIP
    ...to build computers, and [[peripheral]]s for them. They were a successor to DEC's earlier [[System Module]]s. They were introduced as a replacement largely ...(the so-called 'solder' side); the contact pads were 'numbered' from the [[DEC Alphabet]]. A FLIP CHIP plugged directly into a 144-pin connector block [[b
    10 KB (1,460 words) - 15:50, 6 March 2024
  • VAX 9000 series
    ...ightly-coupled [[multi-processor]]s with up to 4 [[Central Processing Unit|CPUs]]. [[Main memory]] was also connected to the SCU. The CPUs were heavily [[pipeline]]d, and were built from [[emitter-coupled logic|ECL
    3 KB (415 words) - 01:26, 2 January 2024
  • DEC indicator panel
    ...nal state of the machine, were provided by [[Digital Equipment Corporation|DEC]] for their earlier computers (such as the [[KA10]]), in common with the ot ...]], although the PDP-11 CPU light displays were modest compared to earlier CPUs. The earliest PDP-11 disk controllers were very much a match for the earlie
    4 KB (612 words) - 20:33, 5 January 2024
  • Qemu
    Qemu can emulate numerious CPUs and machine types. Most are geared towards running [[Linux]], the x86/x64 *[[DEC Alpha]] (really incomplete)
    15 KB (2,245 words) - 12:58, 27 February 2024
  • Windows NT
    | architecture = Originally [[MIPS]], then [[i386]], [[DEC Alpha]], [[PowerPC]], [[Itanium]], [[x64]] ...rsion of OS/2 that would be portable, and was targeted for the coming RISC CPUs. The goal was to design a micro kernel OS that could run 32 bit POSIX bina
    15 KB (2,465 words) - 20:47, 13 January 2024
  • J-11 chip set
    ...]] implementation of the [[PDP-11 architecture]], used in both the [[KDJ11 CPUs]], and a variety of peripherals. It was implemented in two [[integrated cir Most uses on DEC PDP-11 [[Central Processing Unit|CPU]] boards (all for the [[QBUS]]) contai
    2 KB (242 words) - 23:19, 29 February 2024
  • KDF11-A CPU
    ...the M8186. It uses the same 'Fonz' [[F-11 chip set]] as the other [[KDF11 CPUs]]. * [http://www.bitsavers.org/pdf/dec/pdp11/1123/EK-KDF11-UG-PR2_Mar79.pdf KDF11-AA User's Guide] (EK-KDF11-UG-PR
    3 KB (424 words) - 02:05, 10 July 2023
  • M782 Interrupt Control
    ...versions '''M7820''' and '''M7821''') is a [[Digital Equipment Corporation|DEC]] [[FLIP CHIP]] which implements the '[[interrupt]] control' function for t ...re was an un-lettered initial version, but that does not seem to have been DEC practise at the time), although examples of the C and D are not extant (it
    5 KB (820 words) - 04:04, 28 November 2023
  • Computer Emulation Framework
    Inherent in the CEF specification for CPUs is optional support for profiling, breakpoints/watchpoints, assembly and di The available CPU components are DEC PDP-11 (up to 11/34), Intel 8008, Intel 8080/8085, Zilog Z80, RCA CDP1802/1
    4 KB (620 words) - 21:10, 14 January 2024
  • NetBSD 0.9 announcement
    cpus for which there is a cpu declaration (see kernel Modified the SCSI disk startup so that DEC disks (for example)
    29 KB (4,794 words) - 18:15, 16 December 2018
  • KDF11-B CPU
    ...F11-BA M8189, using the same 'Fonz' [[F-11 chip set]] as the other [[KDF11 CPUs]]. ...tor]] headers on the top edge of the card, using the standard 10-[[pin]] [[DEC asynchronous serial line pinout]]. They both provided [[EIA RS-232 serial l
    3 KB (507 words) - 10:58, 29 March 2022
  • INTEL 80386 PROGRAMMER'S REFERENCE MANUAL
    DEC and flags that support a numerics coprocessor and multiple CPUs with shared
    890 KB (107,817 words) - 03:20, 3 January 2024
  • LSI-11
    ...BUS]], and using the [[LSI-11 chip set]]. It was the first of the [[LSI-11 CPUs]]; it had the same QBUS limitations, and use of [[QBUS CPU ODT|ODT]] for co The LSI-11 is a [[DEC card form factor|quad]] board (M7264) with additional functionality on-boar
    3 KB (411 words) - 22:06, 20 December 2023
  • LSI-11/2
    ...1/2''' (also known as the '''KD11-HA''') is the later type of the [[LSI-11 CPUs]], using the same [[LSI-11 chip set‎]]. It contains only the [[Central Pr It is a [[DEC card form factor|dual]] board (M7270); it supports all the same options as
    2 KB (336 words) - 18:34, 19 July 2023
  • UNIX* System V and 4.1C BSD
    Berkeley), based on experience with both systems on a DEC 10.3 DEC.......................................... 36
    113 KB (13,419 words) - 02:06, 17 December 2018
  • MM11-U core memory
    * G114 - [[DEC card form factor‎|hex-width]] sense/inhibit module The MM11-U/UP usually required a custom nine-slot [[backplane]] ([[DEC part number]] 54-10345 or 70-09295), although some [[Central Processing Uni
    6 KB (1,023 words) - 04:53, 22 October 2021
  • KB11
    ...[[Digital Equipment Corporation|DEC]] [[PDP-11]] [[Central Processing Unit|CPUs]]:
    679 bytes (112 words) - 05:57, 29 August 2018
  • Extended UNIBUS
    The '''Extended UNIBUS''' or '''EUB''' was [[Digital Equipment Corporation|DEC]]'s name for both an upgrade to their standard [[UNIBUS]] [[PDP-11]] bus, t ...their main backplanes (the ones which held their [[Central Processing Unit|CPUs]]).
    3 KB (556 words) - 16:00, 6 February 2024
  • PDP-11 Memory Management
    ...subset' machines, SSR1 and (usually) SSR3 are not implemented (the [[KDF11 CPUs]] are an exception to the latter; see below). ...[[PDP-11/70]], [[PDP-11/44]], and machines with the KDF11 CPUs and [[KDJ11 CPUs]].
    9 KB (1,311 words) - 18:10, 2 July 2023
  • KDF11 CPUs
    ...ingle-[[printed circuit board|board]] [[PDP-11]] [[Central Processing Unit|CPUs]] which all use the 'Fonz' [[F-11 chip set]]: * [[KDF11-A CPU]] - M8186 - [[QBUS]] [[DEC card form factor|dual]]-width CPU used in the [[PDP-11/23]]
    3 KB (394 words) - 13:49, 29 March 2022
  • KDF11-U CPU
    ...plugs into a custom slot in the likewise custom PDP-11/24 [[backplane]] ([[DEC part number]] 54-13817, assembly 70-16905). ...mplementing the [[PDP-11 Commercial Instruction Set]] (CIS) (not all KDF11 CPUs can hold this). In addition to the basic CPU functionality, the board also
    6 KB (1,087 words) - 16:16, 6 February 2024
  • KDJ11 CPUs
    There are several single-board [[PDP-11]] [[Central Processing Unit|CPUs]] which all use the 'Jaws' [[J-11 chipset]]: * [[KDJ11-A CPU]] - M8192 - [[QBUS]] [[DEC card form factor|dual]]-width CPU
    3 KB (457 words) - 14:32, 21 February 2023
  • F-11 chip set
    ...implementation of the [[PDP-11 architecture]]. It was used in the [[KDF11 CPUs]]. The main [[Central Processing Unit|CPU]] was implemented in two [[integr ...implements the [[PDP-11 Commercial Instruction Set]] (CIS); not all KDF11 CPUs can hold this, though.
    2 KB (384 words) - 23:50, 28 March 2022
  • FP11 floating point
    ...ng mode for each, and whether floating results were rounded, or 'chopped' (DEC's term for truncated, to avoid confusion with series truncation). * [[KEF11-A floating point chip|KEF11-A]], used in the [[KDF11 CPUs]]
    3 KB (406 words) - 20:42, 13 June 2023
  • LINC-8
    ...ata break]] mechanism). A combined [[front panel]] allowed control of both CPUs. ...ed of discrete [[transistor]] [[FLIP CHIP]]s, mostly R- and S-series, in [[DEC card form factor|standard-length single-height]] (width) format, with a few
    2 KB (328 words) - 13:46, 11 July 2023
  • KEF11-A floating point chip
    ...chip''' is an optional [[integrated circuit|chip]] for [[KDF11 CPUs|PDP-11 CPUs]] which use the [[F-11 chip set]]. It contains [[microcode]] to implement t ...03C7-AA (only the A revision of both has been seen). The entire carrier is DEC part # 57-00001-01-A1 (although 57-00001-00 is occasionally seen - but with
    899 bytes (153 words) - 17:43, 12 March 2021
  • KTF11-A memory management chip
    ...11-A memory management chip''' is an optional chip for [[KDF11 CPUs|PDP-11 CPUs]] which use the [[F-11 chip set]]. It implemented the standard [[PDP-11 Mem The KTF11-A chip was the DC304, [[DEC part number]] 21-15542-0n (where n is a digit giving the revision; 0 and 1
    762 bytes (124 words) - 13:41, 12 August 2022
  • System unit
    ...' is a standard modular [[backplane]] from [[Digital Equipment Corporation|DEC]], used mostly in [[UNIBUS]] [[PDP-11]]s. The initial system units were [[DEC card form factor|hex]] height, four-slot assemblies. (Sometimes a number of
    1 KB (178 words) - 15:45, 23 December 2023
  • UniBone/QBone
    '''UniBone''' and '''QBone''' are [[Digital Equipment Corporation|DEC]]-compatible [[FLIP CHIP]] cards which can be [[simulator]]s for a variety They emulate [[Central Processing Unit|CPUs]], [[main memory]], several [[disk]] subsystems and other peripherals in re
    645 bytes (87 words) - 22:33, 14 January 2024
  • VAX 88x0
    ...the difference between them being the number of [[Central Processing Unit|CPUs]] installed in the basic cabinet: * '''VAX 8820''' - 2 CPUs
    2 KB (204 words) - 04:31, 13 January 2024
  • VAX 7000 series
    ...[[Laser System Bus|LSB Bus]] system [[bus]]; the [[Central Processing Unit|CPUs]] (up to 6), [[main memory]] units, and an 'I/O port' (IOP) module attached They shared much of their cabinetry and components with the [[DEC Alpha|Alpha]]-based [[7000 AXP series]] systems, and also with the [[VAX 10
    2 KB (297 words) - 01:21, 2 January 2024
  • FPJ11 floating point accelerator
    ...a single chip which is plugged into a [[chip socket|socket]] on a [[KDJ11 CPUs|KDJ11 CPU]] card. Two versions of the FPJ11 exist; the FPJ11-AA and the FPJ11-AB. DEC had a number of problems with 'corner cases' (e.g. [[Direct Memory Access|D
    2 KB (276 words) - 21:06, 2 July 2023
  • BA11 mounting boxes
    ...960]] series of 19"-wide racks produced by [[Digital Equipment Corporation|DEC]]. Although they were intended to principally be rack-mounted, many were av ...BA11-K mounting box|BA11-K]] - used to hold both [[Central Processing Unit|CPUs]] as well as [[device controller]]s for UNIBUS -11's
    2 KB (341 words) - 03:06, 11 July 2023
  • UNICHANNEL 15 System
    * A data channel between the two CPUs, which allows them to interrupt each other; this channel is implemented wit ...15-HUCMA-B-D_UC15_Nov73.pdf UC15 unichannel-15 system maintenance manual] (DEC-15-HUCMA-B-D)
    1 KB (180 words) - 14:48, 28 November 2022
  • KD11-A CPU
    ...Time Clock]] (the latter being a standard option across a number of PDP-11 CPUs). The basic KD11-A was contained on four [[DEC card form factor|hex]] cards:
    4 KB (588 words) - 05:52, 8 April 2024
  • KB11-A CPU
    The KB11-A was the first of a [[KB11|series of PDP-11 CPUs]] which were modified versions of this design. ...1/1145/KB11-A_Maint.pdf KB11-A central processor unit maintenance manual] (DEC-11-HKBB-D)
    3 KB (395 words) - 21:08, 2 July 2023
  • PDP-11/74
    ...orporation|DEC]]; it could hold from two to four [[Central Processing Unit|CPUs]]. ...[[disk]]s and [[magnetic tape drive]]s, could be shared between two of the CPUs, using the multi-port capabilities of many [[MASSBUS]] devices; other devic
    2 KB (257 words) - 22:57, 21 August 2021
  • BC11A UNIBUS cable
    ...nnect together [[UNIBUS]] elements (such as [[:Category: UNIBUS Processors|CPUs]], [[system unit]]s, and free-standing [[peripheral|devices]] such as the [ Note that correct [[Digital Equipment Corporation|DEC]] nomenclature does not include a hyphen before the 'A'; an added hyphen, f
    1 KB (176 words) - 12:47, 16 October 2021

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