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- Newsgroups: alt.folklore.computers
- Path: sparky!uunet!news.uiowa.edu!news
- From: jones@pyrite.cs.uiowa.edu (Douglas W. Jones,201H MLH,3193350740,3193382879)
- Subject: Re: PDP ftp archive
- Sender: news@news.uiowa.edu (News)
- Message-ID: <1992Nov20.142937.9123@news.uiowa.edu>
- Date: Fri, 20 Nov 1992 14:29:37 GMT
- References: <13632@ecs.soton.ac.uk>
- Nntp-Posting-Host: pyrite.cs.uiowa.edu
- Organization: University of Iowa, Iowa City, IA, USA
- Lines: 54
-
- From article <13632@ecs.soton.ac.uk>,
- by Toby Russell <tar90@ecs.soton.ac.uk>:
- > I've just opened an ftp archive for PDP software so that all us PDP
- > collectors can swap software with one another.
-
- But there's already an ftp archive at telebit.com for PDP-8 software,
- and there aren't very many PDP-4 collectors out there (but I do have
- a photo of one), so what PDP are you talking about? Perhaps PDP-11?
-
- For your amusement, here's a table of the PDP's, from the alt.sys.pdp8
- FAQ posting:
-
- DEC built a number of different computers under the PDP label, with
- a huge range of price and performance. The largest of these are
- fully worthy of large computer centers with big support staffs.
- Here is the list of PDP computers:
-
- MODEL DATE PRICE BITS COMMENTS
- ===== ==== ======== ==== =====
- PDP-1 1959 $120,000 18 DEC's first computer
- PDP-2 24 Never built?
- PDP-3 36 Only 1 was ever built.
- PDP-4 18 DEC used these in their factory.
- PDP-5 1963 $30,000 12 The ancestor of the PDP-8.
- PDP-6 36 DEC's first really big computer.
- PDP-7 <66 ~$60,000 18 Widely used for real-time control.
- PDP-8 1965 $18,500 12 The smallest and cheapest PDP.
- PDP-9 1966 $35,000 18 An upgrade of the PDP-7.
- PDP-10 1967 36 A PDP-6 upgrade, great timesharing.
- PDP-11 1970 $10,800 16 DEC's first and only 16 bit computer.
- PDP-12 1969 $27,900 12 Originally known as the LINC-8/I.
- PDP-13 Bad luck, there was no such machine.
- PDP-14 A ROM-based controller, not a computer!
- PDP-15 1970 $16,500 18 A TTL upgrade of the PDP-9.
- PDP-16 1972 8/16 A register-transfer module system.
-
- Corrections and additions to this list are welcome! The prices
- given above are the prices for minimal systems in the year the
- machine was first introduced. The bits column indicates the word
- size. It's worth noting that the DEC PDP-10 became the
- DECSYSTEM-20 as a result of marketing considerations, and DEC's
- VAX series of computers began as the Virtual Address eXtension of
- the PDP-11/78.
-
- Although DEC documentation occasionally used the term PDP generically,
- without a qualifying number, this was generally used as a synonym for
- "DEC computer" and not as a reference to a specific machine.
-
- Nowdays, when I hear someone refer to a PDP, or to PDP collectors, I
- assume they're a fairly ignorant newbie unaware of the incredible
- variation between the different DEC PDP architectures.
-
- Doug Jones
- jones@cs.uiowa.edu
-