Path: utzoo!utgpu!watserv1!watmath!att!cbnewsl!rl
From: rl@cbnewsl.att.com (roger.h.levy)
Newsgroups: comp.sys.hp
Subject: Re: HP2114B info
Summary: 21xx genealogy
Message-ID: <1990Jun12.125856.17768@cbnewsl.att.com>
Date: 12 Jun 90 12:58:56 GMT
References: <2498@igloo.scum.com> <770028@hpsad.HP.COM>
Organization: AT&T Bell Laboratories
Lines: 23

In article <770028@hpsad.HP.COM>, walter@hpsad.HP.COM (Walter Coole) writes:
> The earliest reference to a 2114B that I found is in a 1970 HP catalog, which
> has a 7 page section on the 211? computers, including some specifications and
> a list of the instruction set.

Are you certain the reference was to 2114B and not some other 211? machine?
The way I remember it, the line evolved as follows:

	model				era		typical OS
	2116				1969		BCS
	2100A / 2100S			1972		RTE I / RTE II
	2113A and smaller relatives	1974		RTE III
	2114B and smaller relatives	1976		RTE IV / RTE VI

The dates are not exact.  The first two in the line were core based with a
maximum of 128 Kbytes (we always said 64K words).  HP daringly went to DRAM
in 1974 when it was still more expensive than core but was expected to drop
in price.  128 Kbytes of core sold for about $10,000.  I remember thinking
that I might want 256 Kbytes but I couldn't really imagine what I would do
with more.  The 2.5 Mbyte disk drive (7901) on my 2100S system seemed to
have plenty of room in 1973.  It cost about $10,000.

Roger Levy