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- Newsgroups: alt.folklore.computers
- Path: sparky!uunet!stanford.edu!leland.Stanford.EDU!alderson
- From: alderson@elaine46.Stanford.EDU (Rich Alderson)
- Subject: Re: PDP ftp archive
- In-Reply-To: jones@pyrite.cs.uiowa.edu (Douglas W. Jones,201H MLH,3193350740,3193382879)
- Message-ID: <1992Nov21.003656.17491@leland.Stanford.EDU>
- Originator: alderson@leland.Stanford.EDU
- Sender: news@leland.Stanford.EDU (Mr News)
- Reply-To: alderson@elaine46.Stanford.EDU (Rich Alderson)
- Organization: Stanford University Academic Information Resources
- References: <13632@ecs.soton.ac.uk> <1992Nov20.142937.9123@news.uiowa.edu>
- Date: Sat, 21 Nov 92 00:36:56 GMT
- Lines: 67
-
- In article <1992Nov20.142937.9123@news.uiowa.edu>, jones@pyrite (Douglas W. Jones,201H MLH,3193350740,3193382879) writes:
- >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.
-
- (only 23 were ever built, cause KO hated
- big MIS-type machines)
-
- > 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.
-
- Not exactly--more a revival.
-
- > 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
-
- Hmmph. Leave it to the 12-bit crowd to get it wrong.
-
- The DEC-20 is the outgrowth of a smart decision by DEC: License the
- TENEX operating system written for the Dec-10 by Bolt, Beranek, and
- Newman, which featured real demand-paged virtual memory, and sell it
- as an *alternative to*, not a replacement for, Tops-10, which was the
- descendant of the *batch-processing* operating system on the PDP-6 and
- early PDP-10s.
-
- > 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.
-
- Un-huh.
- --
- Rich Alderson 'I wish life was not so short,' he thought. 'Languages take
- such a time, and so do all the things one wants to know about.'
- --J. R. R. Tolkien,
- alderson@leland.stanford.edu _The Lost Road_
-