Difference between revisions of "PDP-10"
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Revision as of 16:41, 12 June 2018
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-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.
Contents
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
Commercial clones
- Xerox PARC: MAXC
- 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
- David Conroy: PDP-10/X
- Neil Franklin: (unfinished)
- Rob Doyle: KS10 FPGA
- David Bridgham: KV10 (in progress)
- Angelo Papenhoff: FPDPGA-6
Software simulators
- S W Galley: virtual machine PDP-10
- Megan Gentry: sim10
- Stu Grossman: kx10
- Ken Harrenstien: KLH10
- Eric Smith: (unfinished)
- Daniel Seagraves: e10
- Tim Stark: ts10, MSE
- Bob Supnik: KS10 simulator for SIMH.
- Richard Cornwell: KA10 and KI10 simulators for SIMH
- Angelo Papenhoff: PDP-6 simulator
- Bruce Baumgart: WAITS reenactment
- Jeff Parsons: PCjs
- Mark Garrett: TITAN
