4 Jan
2007
4 Jan
'07
7:54 a.m.
There were two Orions in
the Computer Science machine room when I went to York, and I know where
both went -- to a collector just along the road from me.
--
Did either still have the original 2901 based processor?
Apparently most HLH machines were upgraded to Clippers CPUs
4 Jan
4 Jan
8:04 a.m.
New subject: Parametron
Hi
Could someone please tell me how one uses a Parametron to
make logic? Nothing that I see on the web actually explains
the operation. All it says is that a 180 degree shift in phase
could be treated as a 1 or a zero.
There is something about a resonent core with non-linear
action and a frequency dividing action. I'd like to see
how one would make a parametron nand gate???
Thanks
Dwight
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10:42 p.m.
New subject: Parametron
On 4 Jan 2007 at 8:04, dwight elvey wrote:
Could someone please tell me how one uses a Parametron
to
make logic? Nothing that I see on the web actually explains
the operation. All it says is that a 180 degree shift in phase
could be treated as a 1 or a zero.
Eichi Goto's basic patent is US Patent 2948818.
Look it up here: http://patft.uspto.gov/netahtml/PTO/srchnum.htm
The explanation is quite elegant.
Cheers,
Chuck
11:51 p.m.
New subject: Parametron
From: "Chuck Guzis" <cclist at
sydex.com>
On 4 Jan 2007 at 8:04, dwight elvey wrote:
Hi Chuck
I see how the resonators work and can be both bistable in phase as well
as amplify. I don't yet get the logic function but I skipped a lot of the
text. I'll study it some more and it should sink in.
It is similar to meg amps used for things like driving high power servos
and such.
Thanks for tracking this down.
Dwight
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Could someone please tell me how one uses a
Parametron to
make logic? Nothing that I see on the web actually explains
the operation. All it says is that a 180 degree shift in phase
could be treated as a 1 or a zero.
Eichi Goto's basic patent is US Patent 2948818.
Look it up here: http://patft.uspto.gov/netahtml/PTO/srchnum.htm
The explanation is quite elegant.
Cheers,
Chuck
8:26 a.m.
Al Kossow wrote:
There were two Orions in
the Computer Science machine room when I went to York, and I know where
both went -- to a collector just along the road from me.
--
Did either still have the original 2901 based processor?
Apparently most HLH machines were upgraded to Clippers CPUs
Pete will hopefully know. I'm starting to wonder about Jim's pair now; the
usenet posting I referred to earlier suggests they were Clippers, but I've
just been scanning past emails from Jim and he refers to them as being
microcoded. I haven't found the rest of the conversation yet, though, which
might shed some more light on things.
The ex-UKC one we were offered was definitely the earlier generation with
2900-series processor.
OS install media is likely to be a big problem for any potential restore, and
likely documentation too (I know Jim rescued what tapes he could, but when I
last spoke to him he was unsure as to exactly what data he had and whether
that included OS media for either or both generations).
These machines are the only HLH survivors that I've come across (which of
course doesn't mean to say that someone has one lurking in private hands!).
The fate of the ex-UKC 2900-series one is unknown - it was rather in the way
the last I heard as the owner was moving house and sounded reluctant about
moving it. I could always get back in touch, though. Hopefully it didn't get
abandoned; UK-designed UNIX systems are pretty thin on the ground (unreliable
or not!).
cheers
Jules
5 Jan
5 Jan
4:26 a.m.
Jules Richardson wrote:
Al Kossow wrote:
Pete wrote
I don't know, but there are a couple of people I can ask, who used the
machines extensively when they were in mainstream use.
--
Pete Peter Turnbull
Network Manager
University of York
There were two Orions in
the Computer Science machine room when I went to York, and I know where
both went -- to a collector just along the road from me.
Did either still have the original 2901 based processor?
Apparently most HLH machines were upgraded to Clippers CPUs
Pete will hopefully know. I'm starting to wonder about Jim's pair now;
the usenet posting I referred to earlier suggests they were Clippers,
but I've just been scanning past emails from Jim and he refers to them
as being microcoded. I haven't found the rest of the conversation yet,
though, which might shed some more light on things.
6565
days inactive
6566
days old
5 comments
5 participants
participants (5)
-
aek＠bitsavers.org -
cclist＠sydex.com -
dkelvey＠hotmail.com -
julesrichardsonuk＠yahoo.co.uk -
pete＠dunnington.plus.com