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• Extended Memory Interconnect
  The '''Extended Memory Interconnect''' (usually given as the acronym: '''XMI''') was a [[bus]] int ...cessor]]. The bus has special capabilities to support the shared access to memory required by such a system.
  3 KB (491 words) - 01:43, 8 May 2024

Page text matches

• RSX-11
  ...i-user version that was an adaptation of the earlier RSX-11D for a smaller memory footprint, it was popular on all PDP-11s; [[Dave Cutler]] was the project l *RSX-11S -- a memory-resident version of RSX-11M used in embedded real-time applications.
  7 KB (1,188 words) - 22:11, 6 August 2023
• RSTS/E
  '''RSTS/E''' (an acronym for '''Resource Sharing Time Sharing Extended''') was a [[multi-user]] [[time-sharing|time-shared]] [[operating system]] ...duced in 1973, to take advantage of the memory mapping hardware and larger memory support introduced with the [[PDP-11/45]]. Starting with V5B, RSTS/E suppo
  14 KB (2,134 words) - 16:06, 3 May 2023
• UNIBUS
  ...nd the ability for devices to do [[Direct Memory Access|DMA]] transfers to memory, and to [[interrupt]] the CPU. ...he top 8 Kbytes of [[address space]] was reserved for the registers of the memory mapped I/O devices used in the [[PDP-11 architecture]]; this block is often
  13 KB (2,162 words) - 23:26, 14 January 2024
• PDP-11/20
  | memory speed = [[MM11-E and MM1-F core memories|MM11-E]]: 500 nsec [[access | memory mgmt = none standard
  6 KB (900 words) - 19:27, 31 December 2023
• PDP-11/60
  ...upported only the [[UNIBUS]], which normally limited it to 248KB of [[main memory]]. ...1KW of read-write microcode), an Extended Control Store (1.5KW [[Read-only memory|ROM]] microcode), or a Diagnostic Control Store.
  3 KB (461 words) - 16:34, 11 January 2022
• PDP-11/24
  ...of [[main memory]], using the [[Extended UNIBUS]] between the [[CPU]] and memory; all devices were attached to a semi-separate (see below) UNIBUS. ...ess space]] was statically mapped across to the low 248 Kbytes of EUB main memory, using a cross-connection path on the [[Central Processing Unit|CPU]] board
  8 KB (1,395 words) - 23:37, 29 February 2024
• PDP-11/44
  ...emory Bus and integrated [[MASSBUS]], relying instead on the UNIBUS, and [[Extended UNIBUS|EUB]]. Its [[Central Processing Unit|CPU]], the [[KD11-Z CPU|KD11-Z] ...[UNIBUS map]] which connected the two, and mapped UNIBUS addresses to main memory addresses.
  4 KB (584 words) - 23:42, 29 February 2024
• PDP-11/40
  ...]] platform, after the [[PDP-11/45]] (albeit with a subset of the [[PDP-11 Memory Management]] [[architecture]]). The [[Original Equipment Manufacturer|OEM]] * [[KT11-D Memory Management]]
  4 KB (664 words) - 19:08, 8 February 2024
• PDP-11/45
  ...-C Memory Management Unit]] (the first implementation of the full [[PDP-11 Memory Management]]). ..., using 350 nsec [[Metal Oxide Semiconductor|MOS]] or 300 nsec [[bipolar]] memory, respectively.
  6 KB (895 words) - 23:52, 29 February 2024
• RK11 disk controller
  ...through the [[MX15-B Memory Multiplexer]], directly to the PDP-15's [[main memory]]. ...hat it only supports [[Q16]] QBUS mode when writing data. The two extended memory bits in the CSR have no effect; they may be read and written, but are not c
  14 KB (2,038 words) - 23:04, 13 September 2023
• PDP-11 architecture
  ...he basic [[address space]] was 16 bits, most models could hold more [[main memory]] than that, although only a limited subset was visible to the [[program]] ...early life, when small and expensive [[core memory]] was the standard main memory; and in its later life, when the 16-bit address space became a severe limit
  13 KB (1,949 words) - 17:37, 29 February 2024
• PDP-8/E
  | memory speed = 1.2 μseconds | memory mgmt = [[bank switching|bank selection]], CPU mode
  4 KB (618 words) - 14:11, 14 July 2023
• Applesoft BASIC
  * In this era of carefully counting clock cycles and limited memory, it was inefficient to write speed-dependent programs that ran on a runtime ...] and [[Apple IIc]] models' BASIC interpreters for the new machines' extra memory and double-resolution graphics, or for the [[Apple IIgs|Apple II<small>GS</
  8 KB (1,203 words) - 19:34, 20 June 2023
• NORD-10
  ...iscellaneous improvements, including solid state memory (instead of [[core memory|core]]), thus the '/S'. ..., and [[hardware]] test [[program]]s, were implemented in a 1K [[Read-only memory|ROM]].
  8 KB (1,313 words) - 13:52, 11 July 2023
• PDP-7
  | virtual address = 13 bits (direct), 15 bits (extended) | memory speed = 1.75 μsec
  3 KB (418 words) - 14:35, 11 July 2023
• PDP-10
  ...of a number of separate free-standing units of various types (CPUs, [[main memory]], etc), connected together with [[bus]]ses carried in point-point cables. ...ent busses: there are different types of bus for main memory (the [[PDP-10 Memory Bus]]), and [[peripheral]]s. On the KA10 and KI10 models, the [[PDP-10 I/O
  11 KB (1,640 words) - 20:59, 8 March 2024
• PDP-8 architecture
  The PDP-8's basic configuration had a [[main memory]] (all [[core memory]], in the early models) of 4,096 twelve-[[bit]] [[word]]s (that is, 4K word ...time of 1.5 microseconds, so that a typical two-cycle ([[Fetch]], Execute) memory-reference instruction ran at a speed of 0.333 MIPS.
  22 KB (3,497 words) - 19:34, 29 November 2022
• Bus
  ...after electrical buses, or busbars. Almost always, there was one bus for memory, and another for peripherals, and these were accessed by separate instructi Some time after this, some computers began to share memory between several CPUs. On these computers, access to the bus had to be prio
  14 KB (2,170 words) - 05:09, 5 September 2019
• NUSSE
  * [[Main memory]]: Rotating drum with 512 32-bit words ''(some sources say 36 bits, which c ...ut: 5-channel paper tape and a Teletype printer. This appears to have been extended somewhat later, see the "Faster than thought" reference above
  4 KB (647 words) - 20:59, 18 March 2024
• Running NetBSD on a VAX
  total memory = 16328 KB<br> avail memory = 12480 KB<br>
  6 KB (970 words) - 18:48, 12 August 2010
• FLIP CHIP
  ...C continued to use the name up into the period when [[DEC card form factor|extended-length quad-height]] cards started to appear, e.g. in the [[KA11 CPU]]. How ...lized modules that are part of a specific larger (sub)-system (e.g. [[core memory]] drivers).
  10 KB (1,460 words) - 15:50, 6 March 2024
• IBM System/360
  | memory speed = 2 μsec (Model 30)<br>780 nsec (Model 91) | memory mgmt = [[protection key]]s (most models)
  15 KB (2,167 words) - 14:58, 23 January 2024
• PDP-8
  | physical address = 32k words (requires optional Type 183 Memory Extension) | memory speed = 1.5 μseconds
  3 KB (365 words) - 18:28, 8 February 2024
• PDP-8/I
  | memory speed = 1.5 μseconds | memory mgmt = bank selection, CPU mode
  3 KB (416 words) - 14:10, 14 July 2023
• VAX 9000 series
  ...[[multi-processor]]s with up to 4 [[Central Processing Unit|CPUs]]. [[Main memory]] was also connected to the SCU. The VAX 9000 used the [[Extended Memory Interconnect|XMI]] as its [[input/output|I/O]] [[bus]]; up to 4 were possib
  3 KB (417 words) - 00:45, 7 May 2024
• UNIX First Edition
  ...searchers sharing a machine (dangerous, since the -11/20 had no hardware [[memory management]]) that a second -11/20 was purchased for the sole use of the pa ...g remained on the RF11. The version which we have also required a [[KE11-A Extended Arithmetic Element|KE11-A]] (use is made of it throughout the [[kernel]]).
  6 KB (926 words) - 19:13, 29 February 2024
• 3BSD
  ..., generally given as the acronym) was [[Unix/32V]] with a better [[virtual memory]] system, that went from 32V's [[swapping]], to a paged system. Additional ...vailable features of the UNIX/32V system, as extended to provide a virtual memory environment and other enhancements at U. C. Berkeley."
  2 KB (340 words) - 14:44, 21 December 2023
• OS/2
  ...le of the disk, and it allowed for larger file systems, long filenames and extended attributes. A later [[service pack]] allowed for 386 and above CPUs to use OS/2 1.2 from IBM included the 'standard' edition, along with the EE or extended edition. The EE edition included basic communications capability (x.25, rs
  22 KB (3,500 words) - 04:39, 13 January 2024
• MS-DOS
  ...o the point where people avoided MS-DOS 4.00 to run this version. It added extended partition and logical drives. MS-DOS 3.3 also included some support for the ...was made popular allowing 386's to simulate [[EMS memory]] with [[extended memory]], and loading device drivers & TSR's into the reserved hardware space.
  8 KB (1,327 words) - 07:03, 22 May 2023
• Incompatible Timesharing System
  | type = Multi-tasking, multi-user, virtual memory ...ran on [[KA10]]s which were modified with MIT-designed and built [[virtual memory|paging]] [[hardware]] (which that generation of PDP-10 [[Central Processing
  12 KB (1,926 words) - 21:29, 8 February 2024
• TROPIX Manual
  primitive to the "light" ( "threads"), memory 1: Support for USB disks (simulations in memory, "pen drive"),
  91 KB (12,020 words) - 17:55, 13 August 2019
• Installing Ultrix 4.0 on SIMH
  using 245 buffers containing 1672192 bytes of memory using 239 buffers containing 1672192 bytes of memory
  13 KB (1,865 words) - 18:41, 3 July 2022
• MIPS Magnum
  The Maximum amount of memory was 256MB. The Magnum also had an [[Extended Industry Standard Architecture|EISA]] bus for expansion.
  2 KB (309 words) - 13:16, 27 February 2024
• Windows NT 3.1 HCL
  Corollary Extended C-bus 486DX2/66 Colorado Memory Systems Jumbo 250
  144 KB (18,526 words) - 03:17, 17 December 2018
• Windows 2.0
  ...wever, it furthered the development of the kernel so that it could use XMS memory, and it later introduced a 286-specific version that could do some limited ...64kb of RAM. Windows/286 was expected to run with MS-DOS 3.3, so the high memory area was not in use, nor was there a himem.sys at the time. DOS extenders
  5 KB (732 words) - 20:11, 13 January 2024
• Windows NT 3.5 HCL
  Memory and More PDS ELITRA PENT-90 VIP Memory and More PDS NETSTATION PENT-90 PCI
  279 KB (34,581 words) - 03:21, 17 December 2018
• A UNIX™ Operating System for the DEC VAX-11/780 Computer
  ...of small pages. Sufficient hardware exists to make demand paging a viable memory management strategy. All console functions are handled by an LSI-11 microco * 0.5 megabytes memory with battery backup
  49 KB (7,745 words) - 14:29, 6 May 2023
• Setting up the Third Berkeley Software Tape
  ...n of this paper appeared under the title ''Setting up the Berkeley Virtual Memory Extensions to the UNIX Operating System'' and, no doubt, references to this ...programs in bytes. For example, if your machine has only 512K bytes of memory, then xxx will be 524228, i.e. exactly 512K.
  42 KB (6,834 words) - 03:01, 17 January 2023
• KDF11-A CPU
  ...[[asynchronous serial line]]s, etc. It does support the optional [[KTF11-A memory management chip]] and the [[KEF11-A floating point chip]], but not the [[KE ...ce]] is limited to 256 Kbytes). In the later models, a bit in the [[PDP-11 Memory Management#Control|SSR3]] CPU [[register]] must be set to allow use of more
  3 KB (424 words) - 02:05, 10 July 2023
• TS11 controller
  ...are commands to the device to perform various functions, stored in [[main memory]]. * NXM - Nonexistent Memory
  3 KB (369 words) - 20:54, 31 December 2023
• TUK50 Host Adapter Module
  ...eral Controller|SPC]] slot. Data is transferred to the host using [[Direct Memory Access|DMA]]; installation of a TUK50 thus requires removal of the [[Non-Pr ...ut extension - With the jumper removed, the non-existent memory timeout is extended from 28 nanoseconds to 37 microseconds; the manufacturing configuration is
  2 KB (363 words) - 15:09, 24 April 2024
• MSV11-J memory module
  ...a [[QBUS]]/[[Private Memory Interconnect|PMI]] [[Dynamic RAM|DRAM]] [[main memory]] card. As a PMI card, it uses the [[CD interconnect]]; it can therefore '' ...s at even word locations, the other for those in odd; the banks are thus [[memory interleaving|interleaved]]. A read cycle from the bus will start a read of
  8 KB (1,374 words) - 00:43, 30 July 2023
• IBM XT
  The '''IBM XT''', formally the '''IBM 5160''' was an extended version of the first [[IBM PC]], the [[IBM 5150]]. It provided extra slots, Since the [[i8086|8088]] CPU could address 1MB of RAM, the memory map was split in a 640KB for OS & programs, and 384KB for hardware buffers
  1 KB (173 words) - 14:00, 19 October 2018
• Linux 0.11
  - Memory paging with copy-on-write - Support for extended memory up to 16M on 386 and above
  5 KB (803 words) - 01:20, 20 December 2018
• Linux 0.12
  makes extensive use of 386 memory management and task primitives. - Memory paging with copy-on-write
  5 KB (824 words) - 01:26, 20 December 2018
• Linux 0.95a
  extensive use of 386 memory management and task primitives. - Memory paging with copy-on-write
  6 KB (879 words) - 01:25, 20 December 2018
• RH750 Massbus Adapter
  ...''' was a [[MASSBUS]] [[device controller]] for the [[VAX-11/750]]'s [[CPU/Memory Interconnect]] (CMI). It was implemented on one [[DEC card form factor|extended hex]] card, which mounts in the VAX-11/750 [[backplane]] in one of the thre
  1 KB (165 words) - 17:02, 15 May 2024
• Installing NetBSD 5.0.2 on the SIMH MicroVAX II
  total memory = 16328 KB avail memory = 12480 KB
  8 KB (1,125 words) - 02:02, 18 November 2010
• Setting up (BSD 4.0) the Fourth Berkeley Software Tape
  The mem messages give the amount of real (physical) memory and the memory available to user programs in bytes. For
  57 KB (8,582 words) - 03:00, 17 January 2023
• INTEL 80386 PROGRAMMER'S REFERENCE MANUAL
  2.1 Memory Organization and Segmentation 2.5.3 Memory Operands
  890 KB (107,817 words) - 03:20, 3 January 2024

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