Search results

From Computer History Wiki
Jump to: navigation, search

Page title matches

  • == [[VAX 9000 series|VAX 9000]] Modules == == [[DEC 4000]] Modules ==
    51 KB (6,185 words) - 15:20, 15 January 2024

Page text matches

  • ...the [[UNIBUS]] general system [[bus]] from [[Digital Equipment Corporation|DEC]]. It was widely used in later [[PDP-11]]s and smaller [[VAX]]en. ...US added support for block transfers, to increase the transfer rate of the bus.
    13 KB (2,043 words) - 23:27, 14 January 2024
  • | bus arch= [[UNIBUS]]/[[MASSBUS]]/memory bus ...ability to support up to 4 Mbytes of [[main memory]] via a new Main Memory Bus, and changes to the CPU to allow access to that much memory
    5 KB (729 words) - 23:43, 29 February 2024
  • '''Digital Equipment Corporation''', or '''DEC''', was a large computer company (at one time, the second-largest in the wo ...an old wool mill in Maynard, Massachusetts. The original product line was modules, [[System Module]]s. Once those were established, they started producing co
    5 KB (624 words) - 19:19, 19 March 2024
  • | BUS-UNIBUS = 1 @ 1.5MB/s [[#ref_1|[1]]] ...ge architecture, the [[Central Processing Unit|CPU]] was shrunk to three [[DEC card form factor|hex]] boards. The machine seems to have been most popular
    5 KB (708 words) - 12:22, 29 March 2023
  • | BUS-Qbus = 1 @ 3.3MB/s ...Digital Equipment Corporation|DEC]]. It used the [[QBUS]] as its primary [[bus]] between the [[Central Processing Unit|CPU]] (the [[KD32 CPU]]) and [[main
    10 KB (1,543 words) - 02:27, 7 May 2024
  • ...versions '''M7820''' and '''M7821''') is a [[Digital Equipment Corporation|DEC]] [[FLIP CHIP]] which implements the '[[interrupt]] control' function for t ...ars that many of them were attempts to get rid of [[race]] issues in the [[bus grant|grant]]-passing [[arbiter|arbitration]] circuity, which is often quit
    5 KB (820 words) - 04:04, 28 November 2023
  • It uses a radial bus configuration instead of the conventional daisy-chain (serial) method; thus It consists of two [[DEC card form factor|hex]] (8.5” by 15.6”) cards, which a mounted in a UNIBUS [[backplane]] of a [[PDP-11]] o
    6 KB (980 words) - 10:55, 31 August 2023
  • (also via AFS by the path: by whether or not it has a file named FIXED in the
    29 KB (4,794 words) - 18:15, 16 December 2018
  • ...ve contains a fair amount of [[electronics]], in the form of [[FLIP CHIP]] modules in a 19" wide [[wire-wrap]] [[backplane]] (mounted fore and aft in the driv ...]); they also convert the Positive bus from the controller to the Negative bus native to the TU10. The Master and Slave variants use the same wire-wrap ba
    9 KB (1,330 words) - 01:11, 10 February 2024
  • 9.6.1.3 Flags Usage by Interrupt Procedure 14.8.1 Bus Lock
    890 KB (107,817 words) - 03:20, 3 January 2024
  • * G110 - [[DEC card form factor|hex-width]] memory control logic and data channels ...arity]] variant of the MM11-L, the '''MM11-LP'''; parity versions (denoted by a 'P' suffix) were available for all of the above. The MM11-LP added a dual
    5 KB (841 words) - 07:14, 25 March 2022
  • ...variant thereof) is the name given to the 'bus' which is present on the [[DEC edge connector contact identification|C and D connectors]] of a [[QBUS#Back It is not actually a full [[bus]] (i.e. a given pin is not connected to 'all' instances of that pin, in eve
    3 KB (524 words) - 16:15, 22 June 2023
  • ...tems Option, the [[KT11-B Paging Option|KT11-B]] does not have the usual [[DEC]] Technical Manual. This page attempts to provide at least the high-level p ...t, and low bits - i.e. addresses within a page - from the incoming address bus).
    31 KB (4,983 words) - 18:22, 2 July 2023
  • ...PDP-11/70]]. It was 32 bits wide, to interface to the -11/70's Main Memory Bus, and provided byte [[parity]] (4 bits/double-[[word]]). Read, Write, and Ex ...ck modules), and the '''MJ11-B''' (which used 64KB modules). Both kinds of modules had to be installed in pairs (since they were 16 bits wide, and the MJ11 de
    5 KB (865 words) - 03:22, 6 February 2024
  • ...11/70]]. It was 32 [[bit]]s wide, to interface to the -11/70's Main Memory Bus, and provided [[Error-correcting code|ECC]] (7 bits/double-[[word]]), which * the MK11-B (which used 32KB and 64KB [[MS11-K MOS memory]] array modules)
    8 KB (1,276 words) - 03:23, 6 February 2024
  • ...cles on the bus, perform read-modify-write bus cycles, or do block 'burst' bus transfers. ...''not'' buffered, and must be held valid for the duration of the resultant bus cycle.
    5 KB (766 words) - 03:15, 25 November 2022
  • ...[VAX Bus Interconnect|VAXBI]] buses, and 8 [[VME]] buses; at least one XMI bus was required. ...two 2GB memory boards, but in this case only 3.5GB would actually be used by [[OpenVMS]] (the remaining 0.5GB of physical address space being required f
    2 KB (297 words) - 00:42, 7 May 2024
  • ...l; it uses the M9724-YA card, which has an ECO modifying the operation of 'Bus Hog' mode (see below). ...e start of the bus can be configured to do [[Non-Processor Request|NPR]] [[bus grant]]s.
    6 KB (951 words) - 15:40, 25 February 2022
  • ...f the earlier [[PDP-6]] architecture) from [[Digital Equipment Corporation|DEC]]. It was intended as a small, low-cost entry model, not as a replacement f The KS10 is organized around a [[synchronous]] [[bus]] (carried only on the main [[backplane]]), to which are attached the [[mic
    8 KB (1,237 words) - 19:48, 14 July 2023
  • ...e [[UNIBUS]] (for [[interrupt]]s, and access to the device's [[register]]s by the [[Central Processing Unit|CPU]]). ...in memory (although the RH70's access to the main memory bus is controlled by the cache). A write to a main memory location which is stored in the cache
    2 KB (318 words) - 15:45, 25 February 2022
  • ...'''OMNIBUS''' was [[Digital Equipment Corporation|DEC]]'s [[peripheral]] [[bus]] for the later [[PDP-8 family|PDP-8]]'s; it was introduced with the [[PDP- ...ck of the count, and only the actual data transfer occurred; this had less bus overhead, but required a more complex controller.
    2 KB (325 words) - 04:52, 19 September 2021
  • ...d for the [[PDP-11/24]] in the BA11-L box) also provided +15V/-15V for use by its [[EIA RS-232 serial line interface|RS232]] [[asynchronous serial line]] A combination of up to 3 modules, composed of [[printed circuit board|boards]] with integral [[heat sink]]s,
    3 KB (519 words) - 15:41, 10 July 2023
  • ...width [[backplane]]s, each slot held four 'connectors', DEC's term for a [[DEC edge connector contact identification|group of edge connector pins]], denom ...[[DEC edge connector contact identification|CD connectors]] form a private bus, sometimes called the [[CD interconnect]], used to connect together board p
    4 KB (676 words) - 23:17, 6 April 2024
  • ...intended to be used with the KA650 CPU, as the name might suggest. These [[DEC card form factor|quad]]-width [[printed circuit board|cards]] contain 8MB a ====Memory Control Signals Provided by the CMCTL====
    42 KB (5,491 words) - 12:55, 7 May 2024
  • ...bits/second were supported by the EIA interface, and up to 1M bits/second by the current loop interface. The DQ11 has a set of 16 'shadow' registers, access to which is gained by placing the shadow register number in the appropriate bits in the DQRER, an
    8 KB (1,222 words) - 04:17, 18 February 2023
  • ...s, could hold up to 4MB in 1MB increments (composed of groups of 4 storage modules); later, the use of 64Kbx1 chips expanded the maximum to 16MB. An ML11 with | 004 ||   || MLBA || Bus Address
    5 KB (611 words) - 18:24, 14 August 2023
  • ...QBUS termination''' are very similar, since in [[analog]] terms the two [[bus]]es are very similar (e.g. their use of the same transceiver [[integrated c ...g termination of the otherwise un-terminated [[transmission line]]s of the bus (i.e. a [[resistor|resistance]] at the end of a transmission line that prev
    7 KB (1,202 words) - 14:32, 28 November 2023
  • ...o error, and by 200 nsec if there is; [[cycle time]] on write is increased by 40 nsec. If an error occurs, an [[Light Emitting Diode|LED]] on the M7850 i ...the associated memory unit(s) are plugged. (Since all the relevant memory modules are hex-sized, the M7850 must go in another slot.) One M7850 can provide pa
    3 KB (434 words) - 00:07, 20 April 2024
  • ...G|300px|thumb|right|/750 backplane from behind, showing the slots occupied by the MS750 in the centre]] * one to eight memory array modules
    2 KB (342 words) - 12:04, 28 March 2023
  • | WILL BE NOTED BY AN " ** " IN THE LEFT MARGIN | the kernel and option modules, see sections 5.1 and 6.
    101 KB (10,182 words) - 14:04, 2 July 2022
  • DEC Standard 068. changed. This document is under ECO control and will be updated by
    118 KB (7,116 words) - 14:05, 2 July 2022
  • * Use at least two computers connected by [[LAN]]. You can either use multiple computers connected by a LAN to solve this, or do a special network setup.
    32 KB (4,724 words) - 22:56, 7 July 2022
  • ...m [[PAL]] [[integrated circuit|chips]] extensively, to fit it onto three [[DEC card form factor|hex]] boards: ...to the FPA. The internal memory bus runs from the MCT to the memory array modules.
    2 KB (234 words) - 00:54, 6 July 2022
  • ...ng|thumb|400px|rightt|A four-processor VAX 6200 system built around an XMI bus]] ...000 series]], and also used in other later [[Digital Equipment Corporation|DEC]] [[VAX]] computers, to cope with increased requirements, e.g bandwidth.
    3 KB (491 words) - 01:43, 8 May 2024
  • ...''' and '''HSC50 Mass Storage Server''' in [[Digital Equipment Corporation|DEC]]'s documentation) is an intelligent [[mass storage]] sub-system [[server]] ...is a [[magnetic tape]] formatter, the [[Standard Tape Interconnect]] (STI) bus is used.
    9 KB (1,370 words) - 23:47, 28 December 2023
  • ...scanning a large raster array memory in the VSV11, the image is specified by a [[display program]] held in [[main memory]]. The VSV11 used [[Direct Memo ...] was not performed by re-reading the display program; rather, it was done by repetitively scanning the raster memory in the VSV11. The VSV11 was capable
    3 KB (390 words) - 12:39, 27 February 2024
  • ...ect#SDI Family of DSA Products|SDI disks]] to a [[QBUS]]. It uses a radial bus configuration instead of the conventional daisy-chain (serial) method; thus ...eporting both to the host and through [[Light Emitting Diode|LEDs]] on the modules minimizes repair time.
    6 KB (888 words) - 10:56, 31 August 2023
  • ...000 series]], and also used in other later [[Digital Equipment Corporation|DEC]] computers. ...s has special capabilities to support the shared access to memory required by such a system, including support for [[cache coherency]].
    3 KB (396 words) - 01:44, 8 May 2024
  • ...n three different model designations VAX 85xx, VAX 8700, and VAX 8800, the DEC internal superordinate name was "VAX 8800 Family" from the beginning: ...ement a five-stage [[pipeline]]. A high-speed memory interconnect, the NMI bus, links CPUs to memory and the I/O subsystem, which connects to VAXBI buses.
    6 KB (844 words) - 22:15, 29 April 2024
  • ...| COVERED BY THIS | ...The unit revision control changes in this document will be controlled by the |-----------------|
    233 KB (10,381 words) - 20:20, 22 May 2023
  • Wed Dec 31 19:02:20 EST 1969 Wed Dec 31 19:32:43 EST 1969
    33 KB (4,919 words) - 12:31, 21 June 2023
  • ...abbreviated to VAX/DS) is a set of diagnostic software programs for the [[DEC]] [[VAX]] computers and peripheral devices. That's what they must have thought at DEC when they developed their diagnostic software.
    24 KB (3,367 words) - 08:59, 4 April 2024
  • ...PDP-11]]-based [[personal computer]]s from [[Digital Equipment Corporation|DEC]]. ...difference is the use of the [[CTI BUS]] (Computing Terminal Interconnect) bus, which is used solely on the PRO series.
    5 KB (681 words) - 16:37, 5 January 2024
  • ...| COVERED BY THIS | | BY THE REVISION MATRIX STANDARD EL-00068-00....
    198 KB (5,881 words) - 23:03, 28 March 2024