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Date:      Thu, 28 Feb 2002 08:43:05 -0600
From:      "Mike Meyer" <mwm-dated-1015339385.f1e2e5@mired.org>
To:        Cliff Sarginson <csfbsd@raggedclown.net>
Cc:        freebsd-chat@freebsd.org
Subject:   Re: First test of GPL in court
Message-ID:  <15486.16889.146502.143165@guru.mired.org>
In-Reply-To: <20020228142249.GB1805@raggedclown.net>
References:  <20020227135103.E64839@dogma.freebsd-uk.eu.org> <20020227061336.N12253@rain.macguire.net> <20020227142303.A65635@dogma.freebsd-uk.eu.org> <15484.63760.663944.125557@guru.mired.org> <20020227163501.A66574@dogma.freebsd-uk.eu.org> <15485.4354.561280.729573@guru.mired.org> <20020228020025.B65094@titus.hanley.stade.co.uk> <15485.40778.433515.165006@guru.mired.org> <20020228070237.GI3311@raggedclown.net> <15485.55616.947697.70199@guru.mired.org> <20020228142249.GB1805@raggedclown.net>

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Cliff Sarginson <csfbsd@raggedclown.net> types:
> On Thu, Feb 28, 2002 at 01:16:16AM -0600, Mike Meyer wrote:
> > Wimp. I learned C reading the v6 kernel, and using the photo7 C
> > compiler just to make life interesting.
> On the other hand the first language I learnt was Fortran 4 on a CDC
> 7600, at the time the most powerful computer in the world (designed by
> Mr Cray no less, before he left CDC to go on to .. well you know
> those big things that don't have operating systems)

Hey, our big thing from that company had an operating system. It was
called UniCOS, and looked like Unix System III, IIRC.

> It was there that I learnt all I know about hardware
> engineering. The 7600 was built on banks of removable
> "modules"..when a faulty one was found it was extracted with a
> special tool and replaced. To find a faulty module when the
> diagnostics were vague the engineers resorted to a technique known
> as "shock testing". This involved hitting the module with a small
> hammer to see if the diagnostic information would become more
> helpful.

Ah, I learned this as the "magic wand" test for intermittent
faults. You wave the magic want vigorously through the component in
question, and the fault generally stopped being intermittent.

> I have often thought of applying this technique to the various bosses I
> have had in my life to see if I can get them to make sense.
> Unfortunately I discovered there was usually no module to extract.

Not a problem for the magic want test - but it's still not
recommended.

	<mike

--
Mike Meyer <mwm@mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.

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