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Article #21158Blinkentests (Was: Making a PDP-10 look *very* busy)
From: a... Vadim Antonov
Date: Sun, 26 Apr 1992 20:29
Date: Sun, 26 Apr 1992 20:29
63 lines
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3092 bytes
In article <1992Apr25....@alliant.com>
we...@alliant.com (Ric Werme) writes:
>I had always felt
>a good diagnostic looked interesting...
Ok, as i once wrote BESM-6 (which meant for Soviet hacker civilization
more than PDP-10 for American) had a LOT of lights. Actually it had a
small lamp wired literally to every trigger inside the CPU. All those
lights were arranged in neat panels of CPU/memory module, surrounding the
operator's seat (sure, *the* operatror's place was near console teletype,
far from CPU :) (the view from top looks like the floowing ASCII picture,
though it does not represent the actual geometry but gives the idea:
the tumbler panels and table
|
the seat --- v
__ \ __
| || [] || | <-- the actual cabinets
\ \\_____// /
\ \_____/ /
\_______/
cpu
front view: |
v
__ _________________ __
| |*|**|*******|**|*| |
| |*|**|*******|**|*| |
| |*|**|*******|**|*| |
| |*|**|*******|**|*| |
| |*|**|*******|**|*| | <- indicator panels
| |*|**|*******|**|*| |
| |*|**|*******|**|*| |
| |_|__|_______|__|_| |
| \_\__|_______|__/_/ | <- tumbler panels
| |~~~~~~~~~~~~~~~~~| | <- desk
| | | | | | | |
| | | | | | | |
| | | | | | | |
~~~~~~~~~~~~~~~~~~~~~~~~
The indicator panels were black and transparent (if memory serves me
right, i haven't seen the beast for seven years) with neon lamps
shining through. At the tumbler panel was a small speaker.
Sure, there was a lot of hardware tests drawing dynamic patterns and
playing music. Some tests were imbedded in the OS (Tyurin's DISPAK at the
time i saw it; a descender of Tomilin's D-68). One of the most popular
hardware tests was running a light wave on indicators.
(The following story i recollected from oldtimer's tales, for exact
details ask Valery Bardin, though i don't think he'll find time to
reply -- he's busy running RELCOM's commercial and political affairs).
So, once Valery hacked that test a bit to make the wave to rush in the
opposite direction and left it running in the morning. Few minutes after
a sleepy service engineer came in, stared *very* anxiously at the lights
and (loudly enough to be heard) said for himself "Yeah, it's time to give
up drinking".
Vadim Antonov
Berkeley Software Design, Inc.
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Newsgroups: alt.folklore.computers Path: mbox-mo1.pugleaf.net!sparky!uunet!avg From: a...@uunet.uu.net (Vadim Antonov) Subject: Blinkentests (Was: Making a PDP-10 look *very* busy) Message-ID: <1992Apr26.202946.1347@uunet.uu.net> Sender: use...@uunet.uu.net (UseNet News) Nntp-Posting-Host: rodan.uu.net Organization: Berkeley Software Design References: <4dxpLbK00VsaE=uz8h@andrew.cmu.edu> <1992Apr25.164138.3334@alliant.com> Date: Sun, 26 Apr 1992 20:29:46 GMT Lines: 63 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit