Difference between revisions of "PDP-10"

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m (Software simulators: + KL10)
(Commercial clones: MAXC wasn't a product)
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* KD10
* KD10
==Commercial clones==
* [[Xerox PARC]]: [[MAXC]]
* [[Xerox PARC]]: [[MAXC]]
* [[Foonly]]: [[Foonly F-1|F-1]], F2, F3, F4, F5 (unfinished)
* [[Foonly]]: [[Foonly F-1|F-1]], F2, F3, F4, F5 (unfinished)
* Systems Concepts: SC-30M, SC-40
* Systems Concepts: SC-30M, SC-40

Latest revision as of 02:03, 10 December 2019

A PDP-10 1090

A series of large, 36-bit word mainframe-like systems built by DEC. They were basically a re-implementation of the earlier PDP-6 architecture, whose hardware engineering had been a failure. (The machines were so similar at the programming level that PDP-6 object code could run on a PDP-10.)

DEC sold 4 different generations of PDP-10 processors: the KA10, the KI10, the KL10, and the KS10. The first three were marketed as the DECsystem-10, running the TOPS-10 operating system; the third was also sold as the DECSYSTEM-20, running TOPS-20. (The varying capitalization was the result of a trademark infringment suit.)

Two other very important operating systems also ran on PDP-10's: MIT's ITS (a very advanced system, from whence came EMACS, and much more besides), and TENEX, which DEC later turned into TOPS-20.

PDP-10 ad

PDP-10s were very important machines on the early Internet, being one of the few (relatively!) cheaply available machines which could run a full NCP and later TCP/IP stack as a multi-user environment at the time.

They still have a large following today. There are several good simulators available, notably SIMH and KLH10.

Cancelled projects

The 36-bit line was cancelled many times. The PDP-6 was difficult to manufacture and maintain, and only 23 were sold; it was cancelled not long after its introduction. However, it made a comeback as the PDP-10, which was a success.

  • KXF10 "Dolphin", cancelled around 1978.
  • KT20 "Minnow", cancelled around 1979.
  • KC10 "Jupiter", cancelled 1983.
  • KD10



  • Foonly: F-1, F2, F3, F4, F5 (unfinished)
  • Systems Concepts: SC-30M, SC-40
  • Tymshare: System 26, System 26KL.
  • CompuServe: JRG-1 (unfinished)
  • XKL: TOAD-1, TOAD-2

Hobbyist recreations

Software simulators

See also

External links