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List:       classiccmp
Subject:    Re: Speaking of tubes in computers.... 1st Honeywell 1000 computer used some surprise tubes!
From:       ED SHARPE via cctalk <cctalk () classiccmp ! org>
Date:       2022-02-23 6:42:50
Message-ID: 752292897.763193.1645598570168 () mail ! yahoo ! com
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The H-800=C2=A0 was=C2=A0 pretty=C2=A0 modern compared=C2=A0 to the=C2=A0 1=
000!
I=C2=A0 marvel at=C2=A0 all of=C2=A0 them!=C2=A0Ed#
In a message dated 2/22/2022 11:27:10 PM US Mountain Standard Time, phil@re=
gressive.org writes:=C2=A0
There's a mention of the Datamatic 1000 in Hugh Blair-Smith's "Left
Brains for the Right Stuff" (on the development of the Apollo Guidance
Computer software), and gives an account that the B&O D-1000 got
flooded when a rooftop water tank burst, and hot tubes met cold water.

Early work on the AGC was hosted on the D-1000 descendent, the
Honeywell 800 series (replacing an IBM 650).=C2=A0 Blair-Smith describes
the H-800 as having eight execution contexts (sets of registers).=C2=A0
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