On June 12, Douglas Quebbeman wrote:
> I just read it last night, but can't find the reference;
> but the Cyber 205 was the final evolution of the CDC 7600
> machine. Its peripheral processors were true, individual
> processors, as opposed to the 6600's single multi-threaded
> PP (one processor with multiple contexts).
I beg to differ here...The design of the 205 was based on the design
of the Star 100, which predates even the 6600. I'm sure there was
some cross-pollenation of ideas and such (being the same company and
all) but they are different computers entirely.
-Dave McGuire
> Anybody want to say a word or two about 205's?
> My recollection was that it was the first Seymour Cray
> machine, probably about 20+ MIPS, probably fixed/short
> electrical path, and probably rectangular (pre circular)
> shape. Anything right?
It was *definitely* not the first Seymour Cray machine.
It's generally considered that the 6600 was architected
by Cray, with Jim Thornton doing much implemtation detail.
But Thornton tends to be put behind Cray in this effort,
and:
> Cray does acknowledge Thornton's authority and work on the 6600 in the
> forward to "Design of a Computer." And it's true that Thornton was
> the machine, and the design's, biggest booster both with the book and
> the numerous papers he authored.
I just read it last night, but can't find the reference;
but the Cyber 205 was the final evolution of the CDC 7600
machine. Its peripheral processors were true, individual
processors, as opposed to the 6600's single multi-threaded
PP (one processor with multiple contexts).
More when I can find it or point to it...
-dq
> >On June 11, Tom Uban wrote:
> > Call Purdue salvage and ask. When I saw it, it wasn't in the area that
> > would normally be seen, but it may be available. Call (765) 494-4600
> > and ask for the number for Purdue salvage...
>
> Ok, I'm Southern Indiana, I'll see if I can't get some initial
> information about this machine. I could fit a Cyber 172 in
> garage, but nothing this big, so I want to help get this
> into the hands of a proper preservation organization.
Ok,
It's already been mostly gutted. There are a few cabinets
left, they've been working since it was decommissioned
to recycle it for the gold, etc.
They may be willing to accept a bid for the remnants
equal to the salvage value. They'll allow anyone who's
interested to go there and take photos of what remains.
Thoughts?
-dq
I just took possession of a Lilith workstation, including two diskpacks
and some spare boards.....
Alas the Lilith doesn't function . While it still might be easy to fix, I'd
rather have some schematics . Are these obtainable somewhere ?
In particular I need to know if the boards marked "URAM" and "DPU" are
essential or not, they are missing in my machine.
"URAM" is not the main memory, since I seem to have a complete set of memory
boards.
Documentation I did get was limited to a short userguide with next to none
technical info.
I would love to see this thing get back into life...
Hi there,
does anyone reading this have a running installation of HP-UX 9.0 on a
HP9000/300-series system and would be so kind to send me /etc/mkdev from that
system. I've just inherited such a system and am trying to back up the
installation first, but /etc/mkdev and the device nodes for the SCSI MO are
missing.
Thanks in advance,
Hans
--
finger hans(a)huebner.org for details
Hello all!
I recently acquired several Motorola (and other vendor) EXORbus cards.
Included are a couple of Micro Module 1A CPU cards, some I/O and memory
cards, and two boards that almost look like video cards.
I need docs for the cards, but I'll post the list in a separate message, as
I'm away from the cards right now.
My initial questions are:
- Does anyone have general documentation on the EXORbus itself? I'd like
mechanical and electrical specs, pinouts, power supply requirements, timing
diagrams, etc. Electronic format would be awesome, but other than that, I'd
pay copying and postage for hardcopies.
- Does anyone know where to get the 86-pin card-edge connectors so I could
wire up a backplane to plug these beasties into?
- Anyone have any EXORbus stuff they want to get rid of? :-)
Thanks!
Rich B.
> > I'd say it's worth preserving. May I implore you to seek
> > out one of the people who frequent this list who offer
> > conversion services? Let's get it on disk, somebody may
> > find one of these systems someday. Or might want to write
> > an emulator...
> >
>
> Sure, sounds good in theory. Who has a 7-track tape drive in usable
> condition at the moment, and wants to try reading the tape?
I didn't want to volunteer him, since he does this both as a
courtesy for fellow hobbyists and as a business for customers.
He says he's got a several month backlog of handling his
customer's needs, so the hobby-courtesy work is even more
way behind.
Likely, you'd have to just send him the tape and wait a year
or so before he'll be able to get around to it. But I'm sure
you've seen Tim Shoppa posting here before, and he's one of
the ones I know about. The guy I sent my 9-track to is having
someone else do it, and he didn't specify, so it's possible
he's sent it to Tim.
Meanwhile, as a possible hedge against this coming up in the
future, I'll be keeping an eye out for a 7-track drive, one
that's of sufficiently-late manufacture that it can be made
workable again. May have to design a custom interface, but
that's just work...
Regards,
-dq
> On Mon, 11 Jun 2001, Douglas Quebbeman wrote:
>
> > > Hmm, what are the odds... I just came across a small magnetic
> > > tape from CDC, from 1975, containing CDC 8090 Assembler, whatever
> > > that is... If the label is to be trusted, it is a 7 track tape,
> > > contains one file, and the density is 556?
> >
> > We had an 8090 in Bloomington, front-ending a 3600; later its was
> > replaced by a 3400. The 3400/3600 system was in turn replaced by the
> > 6600 in 1970.
>
> Do you know what happened to the VAXen used by IU Bloomington in the early
> 1990s? I was at Rose-Hulman at the time, but many of my friends were
> going to IU. I remember there being a couple of VAX/VMS systems like
> ROSE, JADE, and AQUA <?>.
Yeah, those sound like some of the names I've seen, although that was
after my time. But Greg Travis has an interest in these machines, his
web site is:
http://www.prime-mover.org/ClassicComputing/index.html
But while he mentions the VAXen, he doesn't have pictures or state he's
got one or more of them, so you might wan to ask him for further info.
Regards,
-doug q
> ObClassicCmp: What sort of computer systems have the US Geological Survery
> used historical to monitor earthquake activity?
They're probably still using an IBM 605...