Re: BESM-6 again

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#4529

From: d... Don Stokes
Date: Tue, 18 Sep 1990 16:46

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a...@hq.demos.su (Vadim G. Antonov) writes:

>                 One can also calculate a loading of the machine by
> 	measuring distances between baseline and letters.

A recent Mini-Tasker (DECUS RT-11 SIG newsletter) described a load
monitor for PDP-11s running RT-11.  Basically, you attach a circuit to
a handshake line (eg RTS) on a spare serial port (working on the
principle that all real PDP-11s running RT-11 have more serial ports
than they know what to do with).  Then you patch the idle loop of
RT-11's monitor to toggle the line during each pass of the scheduler.
The circuit attached to the line simply counts the frequency of the
pulses coming from the machine, and displaying it on an analogue
meter...

Still doesn't beat the circling lights on the 11/70s I learnt real
world computing on though....  8-)

Don Stokes, ZL2TNM  /  /                            Home: d...@zl2tnm.gp.govt.nz
Systems Programmer /GP/ Government Printing Office  Work:        d...@gp.govt.nz
__________________/  /__Wellington, New Zealand_____or:_PSI%(5301)47000028::DON

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Path: mbox-mo1.pugleaf.net!gmdzi!unido!mcsun!uunet!comp.vuw.ac.nz!gp.govt.nz!zl2tnm!don
From: d...@zl2tnm.gp.govt.nz (Don Stokes)
Newsgroups: alt.folklore.computers
Subject: Re: BESM-6 again
Message-ID: <uHTPP2w163w@zl2tnm.gp.govt.nz>
Date: 18 Sep 90 16:46:12 GMT
References: <1990Sep17.180942.8086@hq.demos.su>
Organization: Me?  Organised?
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Posted: Tue Sep 18 17:46:12 1990
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