Alt-BEAM Archive
Message #04148
To: beam@sgiblab.sgi.com
From: Wouter Brok w.j.m.brok@stud.tue.nl
Date: Wed, 02 Jun 1999 07:25:48 +0200
Subject: [alt-beam] Re: Bicore, wasting energy
Hello Peter,
The problem you state is a different one than I had in mind ... actually I
didn't think yet about any task to be performed by the circuit while the
head is on-target. I saw the circuit, with motordriving circuitry and
motor, more as a platform on which you can mount stuff. The bicore
targeting system should work autonomously from the rest ... at least, at
first this should work well and later maybe stuff can be interfaced to it
(maybe even a microprocessor).
Regards,
Wouter Brok.
>I think one question I haven't seen is "what do you want the head to do
>when it zeros in on its target?"
>
>If there is a task, or tasks, to be performed at that point, is it possible
>to construct a circuit which will cycle through several states (for
>example, perform the task at hand for nine cycles and then use a tenth
>cycle to make sure that the head is still targeted)?
>
>I know I may be treading into dangerous territory here (ucore vs
>uprocessor), but it seemed to me that if a circuit could be constructed
>which performs Task A then Task B then Task C then Task D then goes back to
>Task A, you could limit the consumption of power spent in keeping the head
>on target. Ideally, you would want to be able to vary the cycles spent on
>various tasks depending on the situation at hand -- if the head is off
>target, spend lots of cycles getting on-target; if the head is on-target,
>spend few cycles keeping it there.
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