Difference between pages "Paper tape" and "KT11-C Memory Management Unit"

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'''Paper tape''' (also known as '''punched tape''') was an early form of [[secondary storage]], used primarily for input and output of data; it has been obsolete for many years.
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The '''KT11-C Memory Management Unit''' is the [[memory management]] option for the [[PDP-11/45]]. It implements the full [[PDP-11 Memory Management]] architecture; in fact, the KT11-C is the archetype for PDP-11 memory management units.
  
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It originated as a way of sending and receiving data via teletypes and teleprinters (effectively mechanical typewriters connected via [[serial line]]s). When early computers needed facilities for data input and output, existing punched tape machines were adapted for connection to them.
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The KT11-C consists of two [[DEC card form factor|hex]] cards:
  
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Early paper tapes had 5 rows of holes, but the final versions had 8 rows; the 5-bit versions were used with Baudot teleprinter codes, an early predecessor to [[ASCII]].
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* M8107 Segmentation Address Paths
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and either:
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* M8108 Segmentation Status Registers
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or:
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* M8108-YA Segmentation Status Registers
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The M8108 board is found in the [[KB11-A CPU]] variant of the -11/45, and the M8108-YA in [[KB11-D CPU]] variant.
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They both plug into pre-wired slots in the [[Central Processing Unit|CPU]] [[backplane]].
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When the KT11-C is not present, the CPU must have an M8116 Segmentation Jumper Board present instead.
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==See also==
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* [[KT11-D Memory Management Unit]]
  
 
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{{PDP-11}}
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[[Category: PDP-11 Processors]]

Revision as of 16:31, 11 April 2020

The KT11-C Memory Management Unit is the memory management option for the PDP-11/45. It implements the full PDP-11 Memory Management architecture; in fact, the KT11-C is the archetype for PDP-11 memory management units.

The KT11-C consists of two hex cards:

  • M8107 Segmentation Address Paths

and either:

  • M8108 Segmentation Status Registers

or:

  • M8108-YA Segmentation Status Registers

The M8108 board is found in the KB11-A CPU variant of the -11/45, and the M8108-YA in KB11-D CPU variant.

They both plug into pre-wired slots in the CPU backplane.

When the KT11-C is not present, the CPU must have an M8116 Segmentation Jumper Board present instead.

See also


v • d • e PDP-11 Computers and Peripherals
UNIBUS PDP-11s - PDP-11/20 • PDP-11/15 • PDP-11/35 • PDP-11/40 • PDP-11/45 • PDP-11/50 • PDP-11/55 • PDP-11/70
PDP-11/05 • PDP-11/10 • PDP-11/04 • PDP-11/34 • PDP-11/60 • PDP-11/44 • PDP-11/24 • PDP-11/84 • PDP-11/94

QBUS PDP-11s - PDP-11/03 • PDP-11/23 • PDP-11/23+ • MicroPDP-11/73 • MicroPDP-11/53 • MicroPDP-11/83 • MicroPDP-11/93

QBUS CPUs: LSI-11 • LSI-11/2 • KDF11-A • KDF11-B • KDJ11-A • KDJ11-B • KDJ11-D • KDJ11-E

Buses: UNIBUS • UNIBUS map • SPC • MUD • EUB • QBUS • CD interconnect • PMI

Also: PDP-11 architecture • PDP-11 Extended Instruction Set • FP11 floating point • PDP-11 Memory Management

UNIBUS CPUs: KA11 • KC11 • KB11-A • KB11-B • KB11-C • KB11-D • KD11-A • KD11-B • KD11-D • KD11-E • KD11-EA • KD11-K • KD11-Z • KDF11-U

Co-processors: FP11-A • FP11-B • FP11-C • FP11-E • FP11-F • KE44-A • FPF11

Chips: LSI-11 • KEV11-A • KEV11-B • KEV11-C • F-11 • KEF11-A • KTF11-A • T-11 • J-11 • FPJ11

CPU options: KE11-E • KE11-F • KJ11-A • KT11-C • KT11-D • KK11-A • KK11-B • KT24 • KTJ11-B

Rare CPU options: KS11 Memory Protection and Relocation option • KT11-B Paging Option • KUV11 Writeable Control Store

Front panels: KY11-A • KY11-D • KY11-J • KY11-LA • KY11-LB • KY11-P

More on buses: UNIBUS and QBUS termination • Bus Arbitration on the Unibus and QBUS • CTI BUS

PDT-11s - PDT-11/110 • PDT-11/130 • PDT-11/150   CTI PDP-11s - PRO-325 • PRO-350 • PRO-380

Clones: CM 1420 • SM 1420

Other: FIS floating point • PDP-11 Commercial Instruction Set • PDP-11 stacks • PDP-11 family differences

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