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From: fay@encore.UUCP (Peter Fay)
Newsgroups: comp.arch,comp.unix.wizards,comp.os.minix
Subject: Re: pdp-11/55
Message-ID: <2010@encore.UUCP>
Date: Fri, 9-Oct-87 13:34:11 EDT
Article-I.D.: encore.2010
Posted: Fri Oct  9 13:34:11 1987
Date-Received: Sun, 11-Oct-87 16:21:22 EDT
References: <1755@ncr-sd.SanDiego.NCR.COM> <275@usl>
Reply-To: fay@encore.UUCP (Peter Fay)
Organization: Encore Computer Corp, Marlboro, MA
Lines: 25
Xref: mnetor comp.arch:2577 comp.unix.wizards:4793 comp.os.minix:1851

In article <89@piring.cwi.nl} jack@cwi.nl (Jack Jansen) writes:
}	11/20	Basic pdp-11, no FPU, no MMU, 18 bit unibus (of which
}	11/45	The first big thing. FPU, MMU (separate I/D), 2 18-bit
}	11/10	Low-end machine. No FPU, no MMU. 18 bit unibus with
}	11/70	New high-end machine. FPU, MMU (superset of 45 MMU),
}	11/34	Replacement for 11/40. Basically the same thing in
}	11/04	11/10 replacement in newer technology.
}	11/60	Meant to be new high-end, but failed completely. Very
}	11/780	First VAX. Basically an 11/04 with an extra 32
}	11/03	LSI version of 11/04. First Q-bus machine. The Q-bus
}	11/23	LSI version of 11/34 with Q-bus.
}	11/24	Ditto, only this one had a unibus, a 22 bit memory
}	11/74	LSI version of 11/70, with qbus.
}	11/84	Souped up version of 11/74.

I had the pleasure of using a PDP 11/70 at Hartford State Tech. Col. which
was upgraded (according to the DEC rep) to the only existing (at that
time) PDP 11/80 (?) in the country. Has anyone heard of the beast?
 


-- 
			peter fay
			fay@multimax.arpa
{allegra|compass|decvax|ihnp4|linus|necis|pur-ee|talcott}!encore!fay