PDP-7: Difference between revisions
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| name = PDP-7 | | name = PDP-7 | ||
| manufacturer = [[Digital Equipment Corporation]] | | manufacturer = [[Digital Equipment Corporation]] | ||
| year introduced = 1965 | | year introduced = 1965 | ||
| form factor = [[minicomputer]] | |||
| word size = 18 bits | |||
| physical address = 15 bits (32K words) | |||
| virtual address = 13 bits (direct), 15 bits (extended) | |||
| logic type = PNP [[Transistor]] [[FLIP CHIP]]s | |||
<!--| design type = --> | |||
<!-- | clock speed = μsec (basic instructions) --> | |||
| memory speed = 1.75 μsec | |||
<!-- | memory mgmt = bounds register --> | |||
| operating system = DECSYS-7 | |||
| predecessor = [[PDP-4]] | |||
| successor = [[PDP-9]] | |||
| price = US$72K | |||
| image = Pdp7-oslo-2005.jpeg | | image = Pdp7-oslo-2005.jpeg | ||
| caption = A PDP-7 in Oslo, Norway | | caption = A PDP-7 in Oslo, Norway | ||
}} | }} | ||
The | The '''PDP-7''' is a [[minicomputer]] produced by [[Digital Equipment Corporation|DEC]]. Introduced in 1965, the first to use their [[FLIP CHIP|Flip-Chip®]] technology, with a low cost, it was cheap but powerful. The PDP-7 was the third of Digital's 18-bit machines, with essentially the same [[instruction set]] and [[architecture]] as the predecessor [[PDP-4]] and successor [[PDP-9]]. It was the first [[wire-wrap]]ped PDP. | ||
In | In 1969, Ken Thompson wrote the first [[UNIX]] system in assembly language on a PDP-7, then named Unics as a somewhat treacherous pun on [[Multics]], as the operating system for [http://cm.bell-labs.com/cm/cs/who/dmr/spacetravel.html Space Travel], a game which required graphics to depict the motion of the planets. A PDP-7 was also the development system used during the development of [[MUMPS]] at [[MGH]] in [[Boston]] a few years earlier. | ||
There are a few remaining PDP-7 still in operable condition, along with one under restoration in Oslo, Norway. | There are a few remaining PDP-7's still in operable condition, along with one under restoration in Oslo, Norway. | ||
== Emulation == | == Emulation == | ||
The PDP-7 can be emulated with [[SIMH]]. | The PDP-7 can be emulated with [[SIMH]]. DECSys and some other software is available and can run on the emulator. | ||
==External links== | ==External links== | ||
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* http://heim.ifi.uio.no/~toresbe/dec PDP-7 restoration project located in Oslo, Norway | * http://heim.ifi.uio.no/~toresbe/dec PDP-7 restoration project located in Oslo, Norway | ||
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[[Category:DEC Computer Systems]][[Category:Computers]] | [[Category:DEC Computer Systems]] | ||
[[Category:Computers]] | |||
Revision as of 14:11, 7 November 2017
| PDP-7 | |
 A PDP-7 in Oslo, Norway | |
| Manufacturer: | Digital Equipment Corporation |
|---|---|
| Year Introduced: | 1965 |
| Form Factor: | minicomputer |
| Word Size: | 18 bits |
| Logic Type: | PNP Transistor FLIP CHIPs |
| Memory Speed: | 1.75 μsec |
| Physical Address Size: | 15 bits (32K words) |
| Virtual Address Size: | 13 bits (direct), 15 bits (extended) |
| Operating System: | DECSYS-7 |
| Predecessor(s): | PDP-4 |
| Successor(s): | PDP-9 |
| Price: | US$72K |
The PDP-7 is a minicomputer produced by DEC. Introduced in 1965, the first to use their Flip-Chip® technology, with a low cost, it was cheap but powerful. The PDP-7 was the third of Digital's 18-bit machines, with essentially the same instruction set and architecture as the predecessor PDP-4 and successor PDP-9. It was the first wire-wrapped PDP.
In 1969, Ken Thompson wrote the first UNIX system in assembly language on a PDP-7, then named Unics as a somewhat treacherous pun on Multics, as the operating system for Space Travel, a game which required graphics to depict the motion of the planets. A PDP-7 was also the development system used during the development of MUMPS at MGH in Boston a few years earlier.
There are a few remaining PDP-7's still in operable condition, along with one under restoration in Oslo, Norway.
Emulation
The PDP-7 can be emulated with SIMH. DECSys and some other software is available and can run on the emulator.
External links
- "The famous PDP-7 comes to the rescue" (Bell Labs' Unix history)
- http://research.microsoft.com/~gbell/Digital/timeline/1964-3.htm PDP-7 entry from Year 1964 in the DIGITAL Computing Timeline
- http://heim.ifi.uio.no/~toresbe/dec PDP-7 restoration project located in Oslo, Norway
