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From: mwm@eris.BERKELEY.EDU (Mike (My watch has windows) Meyer)
Newsgroups: comp.arch
Subject: Re: QM-1 or like machines???
Message-ID: <5023@jade.BERKELEY.EDU>
Date: Mon, 7-Sep-87 03:27:02 EDT
Article-I.D.: jade.5023
Posted: Mon Sep  7 03:27:02 1987
Date-Received: Tue, 8-Sep-87 02:03:58 EDT
References: <63900006@convex> <43700020@uicsrd> <1978@kitty.UUCP> <329@devvax.JPL.NASA.GOV> <1980@kitty.UUCP>
Sender: usenet@jade.BERKELEY.EDU
Reply-To: mwm@eris.BERKELEY.EDU (Mike (My watch has windows) Meyer)
Organization: Missionaria Phonibalonica
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In article <1980@kitty.UUCP> larry@kitty.UUCP (Larry Lippman) writes:
<	What always amazed me was that the lights were NOT labeled!

If you figured out what lights tied to what bits in the register,
you'd know why! Who in their right minds would *label* interleaving
the bits from two registers in six-bit hunks in a vertical line?

<Perhaps there was a template or guide somewhere, but I never saw one.
<I have seen QM-1's that had the lights spell out ``QM-1'' when the CPU
<was in a wait state (I don't know what emulation or O/S was being run to
<create that pattern, though).

That was the "stock" emulation that most of the QM-1 development was
done on. It looke vaguely like a Data General (I think that was what I
was told) machine.

To be accurate, the "stock" nanocode provided a microcode that looked
a little like the DG machine, complete with 18-bit words. Most
applications (for the machine I dealt with, the Air Farce simulating
weapons systems so they could do software developmen in parallel with
the hardware development) were built on top of that.

There was also a PDP-11/10 emulation that put "PDP" in the lights. I
heard rumors of an IBM 360/??? emulation, but never saw it. We did
nanocode to emulate a micro designed by a group at Toronto and tweaked
by us for running code from a C compiler called QM/C. The lights
spelled out "QMC", of course.

	<mike
--
Lather was thirty years old today,			Mike Meyer
They took away all of his toys.				mwm@berkeley.edu
His mother sent newspaper clippings to him,		ucbvax!mwm
About his old friends who'd stopped being boys.		mwm@ucbjade.BITNET