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• MSV11-P MOS Random-Access Memory
  ...[[DEC card form factor|quad]]-height [[QBUS]] [[Dynamic RAM|DRAM]] [[main memory]] card. The MSV11-PL (M8067-Lx) holds 512 KBytes when fully populated with The memory is arranged as 2 banks, each 16 data bits (1 [[PDP-11]] [[word]]) wide, wit
  4 KB (600 words) - 21:23, 2 July 2023
• DRV11-WA General Purpose DMA Interface
  ...of 16-[[bit]] parallel ports, one input, and one output. It uses [[Direct Memory Access|DMA]] to transfer data; it is a [[QBUS#Variable address size|Q22]] d * NEX - Nonexistent Memory; also write-to-zero
  4 KB (529 words) - 19:12, 2 December 2021
• DEC Modules by bus
  | style="padding: 0 1em 0;" | DEC 4000 memory 16MB [[#ref_6|[6]]] | style="padding: 0 1em 0;" | DEC 4000 memory 32MB [[#ref_5|[5]]]
  51 KB (6,185 words) - 15:20, 15 January 2024
• DHV11 asynchronous serial line interface
  ...trol, depending on the cabling option chosen (below). Output used [[Direct Memory Access|DMA]] (with each line having its own [[buffer]] [[pointer]] and coun * the DHV11 includes several [[microprocessor]]s, and has extended capabilities, including a [[diagnostic]] self-test, and [[hardware]] in-ban
  6 KB (894 words) - 11:33, 17 February 2023
• MINI-UNIX
  ...on models of the [[PDP-11]] such as the [[PDP-11/05]] which did not have [[memory management]] (which was required for early Unix versions from [[UNIX Fourth ..., with the kernel in low memory, and the processes (one at a time) in high memory.
  8 KB (1,243 words) - 21:16, 21 June 2023
• LSX
  ...also included. It was targeted to systems with a minimal amount of [[main memory]], as little as 40KB (a real concern for LSX, on early LSI-11s, which usual ..., with the kernel in low memory, and the processes (one at a time) in high memory.
  7 KB (1,142 words) - 08:14, 8 November 2022
• DHU11 asynchronous serial line interface
  ...l line interface|RS-232]] [[asynchronous serial line]]s, and used [[Direct Memory Access|DMA]] on the output side. * the DHU11 includes several [[microprocessor]]s, and has extended capabilities, including a [[diagnostic]] self-test, and [[flow control]] su
  5 KB (710 words) - 02:28, 19 February 2023
• PDP-4
  | physical address = 15 bits (32K words - requires Type 16 Memory Extension Control) | memory speed = 2 μsec ([[access time]])<br>8 μsec (read/write [[cycle time]])
  6 KB (775 words) - 20:00, 7 February 2024
• PDP-8 Memory Extension units
  ...switching]] to allow more than one PDP-8 [[address space]] worth of [[main memory]] to be installed and used. Although the implementation of the various unit ...ory. The Memory Extension units allow the use of multiple 'fields' of main memory, the exact number depending on the model:
  4 KB (614 words) - 21:02, 7 August 2022
• RL8-A disk controller
  | 6602 || RLMA || Load memory address register |Memory Address Register || MA
  7 KB (982 words) - 21:30, 26 May 2021
• DQ11 NPR Synchronous Line Interface
  The ''' DQ11''' is the earliest [[Direct Memory Access|DMA]] [[synchronous serial line]] [[peripheral|interface]] for the [ * MXEET - Memory Extension or Enter/Exit T
  8 KB (1,222 words) - 04:17, 18 February 2023
• MM8-E Memory System
  ...MM8-E was the first [[PDP-8 family]] core memory system to use the [[core memory#Technical details|shared sense/inhibit line]] technical innovation. The ini * Memory Stack Assembly H211/H220 (4K); H212 (8K)
  3 KB (446 words) - 15:57, 11 May 2023
• KK11-B Cache Memory
  The '''KK11-B Cache Memory''' was a standard part of the [[KD11-Z CPU]] of the [[PDP-11/44]], a high-s ...there was only one possible cache entry in which any given word of [[main memory]] could be found), with write-through, and a block size of one [[word]].
  3 KB (501 words) - 16:27, 6 February 2024
• UNIX Third Edition
  ...]] model of the PDP-11: "it depends on what hardware is present ([[KE11-A Extended Arithmetic Element|EAE]], [[FP11-B Floating-Point Processor|floating-point ...nknown; as late as V3, there were apparently still UNIX machines without [[memory management]] hardware: "The purpose of this command is to simplify the prep
  4 KB (674 words) - 03:58, 20 October 2023
• UNIX Second Edition
  ...rotect & Relocate" [[memory management]] option for the -11/20, the [[KS11 Memory Protection and Relocation option|KS11]]. Some of the -11/20's running V2 UN ...at a higher address (since on the PDP-11, [[interrupt vector]]s are in low memory), as on [[MINI-UNIX#Implementation_details|MINI-UNIX]]; but again, neither
  5 KB (926 words) - 03:54, 20 October 2023
• KDF11-U CPU pinout
  ...ended UNIBUS]] used between the [[Central Processing Unit|CPU]] and [[main memory]]; others are part of the connection between the CPU and the optional [[UNI [[Category: Extended UNIBUS]]
  8 KB (1,587 words) - 16:14, 6 February 2024
• Computer Interconnect
  * [[CIXCD]] - [[Extended Memory Interconnect|XMI]] CI Interface
  3 KB (483 words) - 18:11, 3 June 2024
• Installing MicroVMS V4.6 on SIMH
  * [[MS630]] 16 MB Memory %SYSGEN-I-EXTENDED, DISK$MICROVMS:[SYS0.SYSEXE]PAGEFILE.SYS;1 extended
  65 KB (7,949 words) - 21:58, 19 August 2023
• Harris H series
  ..., the '''H-100''', was released in 1978. In the early 1980s, the H series extended into the [[supermini]] segment. One of the last models was the '''H-1600'' ...S'''&mdash;''Disc Monitor System''. The Harris machines ran the [[virtual memory]] [[operating system]] '''VULCAN'''&mdash;''Virtual Core Management Operati
  2 KB (263 words) - 18:22, 22 December 2023
• VAX-11/780 & VAX-11/782 Revision Control
  5.3 MS780A - MOS Memory (4KB Array) 5.4 MS780C - MOS Memory (16KB Array)
  70 KB (7,782 words) - 14:04, 2 July 2022

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