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• UNIX* System V and 4.1C BSD
  Berkeley), based on experience with both systems on a DEC 8.2.2 Variety of hardware and protocols
  113 KB (13,419 words) - 02:06, 17 December 2018
• DEC card form factor
  Many different [[Digital Equipment Corporation|DEC]] computers (e.g. [[PDP-8 family|PDP-8]], [[PDP-10]], [[PDP-11]]) used a st ...eared in the [[VAX-11/780]], and were called '''super hex''' boards within DEC.
  2 KB (372 words) - 12:02, 24 May 2022
• DEC alphabet
  ...ification|contact fingers]] on the edge of [[DEC card form factor|standard DEC cards]] (the first use). It runs: [[Category: DEC Hardware]]
  720 bytes (132 words) - 15:42, 8 August 2023
• KL10
  ...P-10]] processors. It was built out of [[Emitter-coupled logic|ECL]], on [[DEC card form factor|hex]] cards. It was the first [[microcode|micro-programmed * CPU hardware variants (-PA, -PV and -PW);
  11 KB (1,737 words) - 13:06, 2 April 2024
• KA10
  | design type = asynchronous with hardware subroutines ...[PDP-6]] architecture). It was built out of discrete [[transistor]]s, on [[DEC card form factor|short single]] [[FLIP CHIP]] cards, plugged into large cus
  2 KB (298 words) - 07:28, 6 September 2023
• DL11 asynchronous serial line interface
  ...computers which provided a single [[asynchronous serial line]]. It was a [[DEC card form factor|quad]] format card, and used an [[Small Peripheral Control ...[Berg connector]] header on the top edge of the card, using the standard [[DEC asynchronous serial line pinout]].
  7 KB (1,055 words) - 17:22, 6 February 2024
• KT11-B Paging Option
  ...option for the [[PDP-11/20]], produced by [[Digital Equipment Corporation|DEC]]'s Computer Special Systems group; it can provide a "[[multi-user]], machi Finally, hardware features prevent any user from interfering with the overall operation of th
  15 KB (2,571 words) - 22:23, 11 October 2022
• PDP-11 Memory Management
  ...ntrol field (read/only, read/write, etc), a 'dirty' bit (maintained by the hardware), etc. The layout of the PDR is: * [[KT11-B Paging Option]] - DEC experiment with paging
  9 KB (1,311 words) - 18:10, 2 July 2023
• KDF11-U CPU
  ...plugs into a custom slot in the likewise custom PDP-11/24 [[backplane]] ([[DEC part number]] 54-13817, assembly 70-16905). ==Hardware details==
  6 KB (1,087 words) - 16:16, 6 February 2024
• FP11 floating point
  ...oint]] data types and instructions supported by most [[PDP-11]]s which had hardware support for floating point. (Some supported a simpler, less capable floatin ...ng mode for each, and whether floating results were rounded, or 'chopped' (DEC's term for truncated, to avoid confusion with series truncation).
  3 KB (406 words) - 20:42, 13 June 2023
• RX01/02 floppy drive
  The '''RX01''' and '''RX02''' floppy drives were [[DEC]]'s first floppy drives, and were used on a number of computers, such as th ...'not''' the same as the 'normal' double-density 8" floppy, but a unique-to-DEC format. Single-density recording uses a double frequency ([[Frequency Modul
  8 KB (1,195 words) - 20:09, 15 August 2023
• LINC
  ...]). It was a 12-bit computer, built out of [[Digital Equipment Corporation|DEC]] [[System Module|System Building Blocks]]. The initial version had only 10 It became a product for DEC, which sold both the original, and several descendants: the [[LINC-8]], and
  3 KB (487 words) - 01:35, 28 February 2024
• Core memory
  ...M|DRAM]]-era perspective, seems quaintly dinosaurian. Individual pieces of hardware one can actually ''see'' with the naked eye, for ''each'' bit? [[Digital Equipment Corporation|DEC]] design practise was to include temperature sensors in the core planes, an
  8 KB (1,299 words) - 02:33, 4 March 2024
• Vonada's Engineering Maxims
  ...ing compiled by Don Vonada, an engineer at [[Digital Equipment Corporation|DEC]], and reproduced in: ...J. Craig Mudge, John. E. McNamara, "''Computer Engineering: A DEC View of Hardware Systems Design''" (Digital Press, Bedford, 1978)
  2 KB (299 words) - 12:36, 3 December 2023
• FIS floating point
  ...point]] [[instruction]]s supported by a few of the [[PDP-11]]s which had [[hardware]] support for floating point. ...between the two, the FIS was useful since [[Digital Equipment Corporation|DEC]]'s [[FORTRAN]] [[compiler]] (the main 'target' for the FIS) for the PDP-11
  2 KB (355 words) - 17:49, 7 December 2021
• PDP-11 Extended Instruction Set
  ...he basic [[PDP-11]] [[PDP-11 architecture|instruction set]]; it includes [[hardware]] multiply and divide, and also multi-bit shifts. The exact [[instruction]] ...1-E was US$1200. This almost certainly why [[Digital Equipment Corporation|DEC]] didn't just include the KE11-E functionality in the 'standard' -11/40, bu
  2 KB (266 words) - 17:20, 28 October 2022
• BSD Fast File System
  ...tion of most meta-data, and all data, it was still somewhat susceptible to hardware failures such as [[head crash]]es). ...nformation too was not all on a single platter, and vulnerable to a single hardware failure.
  11 KB (1,759 words) - 19:20, 12 June 2023
• 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
• PDP-6
  | design type = asynchronous with hardware subroutines ...tly) [[object code]] compatible. It was built out of [[System Module]]s, [[DEC]]'s predecessor to the [[FLIP CHIP]] module series (out of which the first
  3 KB (510 words) - 07:28, 6 September 2023
• VAX 8200
  <div id="ref_1">[1] VAX Systems Hardware Handbook -- VAXBI Systems. EB-31692-46</div> <div id="ref_3">[3] VAX Hardware Handbook. Volume 2-1986. </div>
  2 KB (317 words) - 04:02, 19 May 2024

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