Alt-BEAM Archive
Message #12385
To: "'beam@sgiblab.sgi.com'" beam@sgiblab.sgi.com
From: Wilf Rigter Wilf.Rigter@powertech.bc.ca
Date: Thu, 23 Mar 2000 07:39:32 -0800
Subject: [alt-beam] Re: "Living Machines" question & an experiment
Unfortunately, my (one process logic) PNCfree is only useful for a microcore
or when constant vigilance against saturation is required. It is however not
scalable. The PNCfree premise is based on active Nvs (surgically) killing
any competing processes. That premise does not scale in a general way with
higher order Nv rings since the number of diodes increases rapidly with
multiple patterns. But there may be magic Nv numbers where fewer diodes
suffice. In case of injecting specific patterns in anything greater than a
microcore, use Bruce's "kill all processes first and then kickstart the ones
you want to live" method which scales linearly with the ring length. BTW
Bruce's circuit is very similar to a 2 gate old style PNC (heheh)
regards
wilf
> -----Original Message-----
> From: Jeffrey B. Williams [SMTP:jeffrey.williams@prodigy.net]
> Sent: Thursday, March 23, 2000 7:32 AM
> To: beam@sgiblab.sgi.com
> Subject: Re: "Living Machines" question & an experiment
>
> Maybe a Old style PNC that holds two gates instead of one could start the
> twelve Nv loop with two pulses. Also Wilf's PNC'less circuit looks to be
> easily scalable. You may want to use the diodes to "surgically prevent"
> non
> useful patterns.
>
> just a thought, not tested!!!!
>
> Jeff
>
> ----- Original Message -----
> From:
> To:
> Sent: Wednesday, March 22, 2000 7:09 PM
> Subject: Re: "Living Machines" question & an experiment
>
>
> > So Bruce, If this phase shift occurs in loops of six with two processes,
> what
> > happens with a twelve looped Nv set? can the implex be observed when
> there
> is
> > just one pulse circulating? how do I make a walker start with two or
> more
> > pulses? instead of one like my solarbotics scoutwalker 1 kit does? by
> the
> > way, throwing this out to anyone, how do I attach a multiplexer to the
> loop?
> > thanks a bunch
> > stick
12386 Thu, 23 Mar 2000 09:17:32 -0700 (MST) [alt-beam] Re: Why isn't the HC4066 used for h-bridges? beam@sgiblab.sgi.com Don Papp On Wed, 22 Mar 2000, Bruce Robinson wrote:
> I do like this chip, though. It's very much like a low-current, solid
> state relay, and I'll probably end up using it for something.
It is excellent for a hack interface to anything (usually consumer
electronics) where you would like a cct to hit a switch.
For example, solder the two ends of a 4066's switch to the ends of
a pushbutton and you have a digital switch. (In most cases)
DonP
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