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Article #21159

Re: Blinkentests (Was: Making a PDP-10 look *very* busy)

#21159
From: ru... Russ Kepler
Date: Mon, 27 Apr 1992 02:51
27 lines
1933 bytes
In article <1992Apr26....@uunet.uu.net> a...@uunet.uu.net (Vadim Antonov) writes:
>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".

On the PDP-10 I worked on there was a relatively large bank of lights
for the ALU register display.  If I remember right the top 6 rows of
36 lights were displaying the register contents, and seeing that gave
a few of us some ideas.

It took a little while, but pretty soon we had hacked up a set of
routines that would display pretty much any bit pattern in the ALU
displays.  Since the system had about 90% idle time, we could toss
this job in and let it suck up spare time (displacing the null job)
and display what we wanted to see.

I heard it was a favorite trick of remote sites to display messages
about the supposed parentage of the on-duty operator; at least until a
passing VIP noticed the message slowly scrolling to the left...

Ah, well, not as bad as sending a "mount tape" message with a push
just after the operator left for the weekend.

-- 
Russ Kepler, Basis International Ltd. ru...@bbx.basis.com  phone: 505-345-5232
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References: <4dxpLbK00VsaE=uz8h@andrew.cmu.edu> <1992Apr25.164138.3334@alliant.com> <1992Apr26.202946.1347@uunet.uu.net>

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Path: mbox-mo1.pugleaf.net!sparky!uunet!think.com!zaphod.mps.ohio-state.edu!moe.ksu.ksu.edu!unmvax!bbx!russ
From: ru...@bbx.basis.com (Russ Kepler)
Newsgroups: alt.folklore.computers
Subject: Re: Blinkentests (Was: Making a PDP-10 look *very* busy)
Message-ID: <364@bbx.basis.com>
Date: 27 Apr 92 02:51:30 GMT
References: <4dxpLbK00VsaE=uz8h@andrew.cmu.edu> <1992Apr25.164138.3334@alliant.com> <1992Apr26.202946.1347@uunet.uu.net>
Organization: BASIS International, Albuquerque NM
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