> I received a pdf from one of the others on the list. The pdf shows
>that the 861 is not exactly like the 7420, in that the unused pins
>of the 7420 are for gate expansion on the 861. The circuit that uses the
>part, I think is failing, doesn't use these pins. The biggest potential
>problem I see is that the original designer used two outputs tied
>together. This means that the other output has to pull it down
>as well. I tried a 74LS20 and it didn't work but I think it is
>just that the 74LS20's have a strong pull-up. I'll try to locate
>a 7420 and give it a try. I've also found a part supplier that
No No NO! TTL aka 7420 has an active pullup and one output
will fight another. Those parts are RTL/DTL and the ouputs
are either open collector (is there a pullup resistor?) or have
an internal Pullup. So if you going to try TTL use parts that
are open collector like 7401 or 7403...
Allison
>stocks old DTL and even RTL parts. I haven't contacted them
>yet but if the 7420 doesn't work I'll give them a try. They
>have these in the Motorola part numbers. For others looking for old
>parts, they are:
>
>http://lansdale.com/~lansdale/index.html
>
> I'm sure these will be expensive but then what the heck.
>Thanks for the reply
>Dwight
>
>
Coincidentally, I've got mail here from a DG-guy looking for other
DG preservationists. The appropriate bits follow. I'm sure he'd
love to hear from all interested parties.
Cheers,
Bill.
-----------------------------------------------------------------------------
| To: History Preservation Buffs
|
| In a little over 30+ years Data General has gone from exciting startup
| computer company, to number two minicomputer company, to almost a footnote
| in our memories. The recent buyout by EMC has effectively closed the door
| on any corporate interest in saving this important part of computer history.
|
| A recent increase in 16-bit Nova and Eclipse activity(!) and has made us
| decide to split off a separate web site - www.SimuLogics.com - to try to
| deal with these situation. The intent is to salvage, restore, preserve and
| archive all of the 16-bit Nova, Eclipse and compatible hardware, software
| and documentation possible. As part of this effort we have donated most of
| our own DG systems to the various museums, educational institutes and
| collectors. We are also transferring all manuals and software to CDROM to
| preserve this heritage.
|
| Various clients and vendors have also supported this effort by providing
| hardware, software and documentation that we are transferring to CDROM for
| archival and historical purposes.
|
| The www.SimuLogics.com web site's nostalgia section is planned to be the
| starting point for an expanded area for this highlight in computer history.
|
| Now I'm scrounging trying to find any and all Nova- and Eclipse-type stuff
| to resurrect, restore and run, and am seeking any Nova/Eclipse/RDOS/AOS
| hardware/software/documentation that could be preserved - any items that
| might be even loaned for testing and/or archival purposes would be
| appreciated. Also, any good tidbits or other such stuff would be great to
| include in the triva section for posterity.
|
| And third-party DG look alikes are also being sought. Point 4, Bytronix,
| IDP and others were important sub-markets within the DG area along with
| third-party operating systems such as MICOS, BITS, VMOS.
|
| And site comments/ridicule/suggestions are always welcome!
|
| Bruce Ray
| bkr(a)SimuLogics.com
| www.SimuLogics.com
|
| Parent company:
|
| Wild Hare Computer Systems, Inc.
| P O Box 3581
| Boulder, Colorado 80307-3581
| USA
| vox: (303) 466-7717
| fax: (303) 465-5780
| bkr(a)WildHareComputers.com
| www.WildHareComputers.com
... and ...
| P S I wrote some of the Keronix system software (KMOS) and other stuff
| for Keronix in '73 and '74, and Doug Chadwick wrote an IRIS BASIC system
| for them (called BITS). I loved my personal IDP 16 with light blue case
| and red LEDs and could perhaps answer other questions you might have. I
| think you responded to a thread on the San Gabriel Keronix question...
I`m having the opportunity to buy a VAXstation 4000 VLC,
would anyone recomment it, as a "my first VAX" ?
Or should I go for another model ?
Regads Jacob Dahl Pind
Public Pgp key available on request
--------------------------------------------------
= IF this computer is with us now... =
=...It must have been meant to come live with us.=
= (Belldandy - Goddess First class) =
--------------------------------------------------
Jarkko Teppo <jate(a)uwasa.fi> wrote:
(HP9000 series 550)
> I have yet to figure out a *safe* way to clone the OS to another
> disk for backup.
I recommend reading the following man pages as a start: osmgr(8),
sdfinit(8), mkrs(8). Follow the "see also" links in the pages for
more info.
Having a 9144 or equivalent CS/80 cartridge tape drive (and
cartridges) could be a Good Thing, that's the sort of device that mkrs
wants to build its bootable tape filesystem upon.
-Frank McConnell
Picked up a FLUKE 8000A Digital Multimeter (92270) at the yard for a
couple dollars. Seems to power up but no leads came with it. No doc's
either, can I use some Radio Shack test leads with this unit ?
John Keys
> The owner of the computer, Ray Borrill, operated a chain of
> computer stores in the Midwest in the late 70's, one of the first
> in the nation. This particular Apple-1 was one of 15 units
> ordered directly from Steve Jobs. It was used as a display model
> and was never sold. Borrill decided to hold onto it through the
> years for posterity. Borrill, now retired, has decided that it's
> time to pass the machine on to someone else who will continue to
> appreciate it as he did.
Fascinating... Ray's Apple was the first and only one I ever used;
when I saw it, it had what appeared to be a Radio Shack transformer
supplying power to it. Just a bare board, and ISTR it was connected
to a TV set via an RF-modulator, and was running Spacewar. Could be
wrong, Spacewar may have been running on one of the other machines
Ray had at the Bloomington, IN store of his DataDomain chain.
To anyone who'll be there, bidding on this, please bid vigorously;
Ray has health problems and really, really needs the money. My SOL
would never have made it to adulthood without his help.
-dq
> Any DG AOS/VS people out there?
I helped evaluate the Eclipse around 1980 when our local Indiana Unversity
campus was trying to break free from our total dependence on the centralized
IU computing factilities in Bloomington and Indianapolis. It had a lot to
offer, but we like Pr1me better, and went that route.
IIRC, the Eclipse architecture was an evolution of the DG Nova architecture.
It's development is the subject of Tracy Kidder's "Soul of a New Machine",
a book I'd highly recommend reading.
regards,
-doug q
Is there anyone in _europe_ that could be kind enough to read
my 9-track tape? (all postal expenses paid, of course) As last resort
I'll ask someone in USA to do it (thanks to the ones that offered!).
Cheers,
--
*** Rodrigo Martins de Matos Ventura <yoda(a)isr.ist.utl.pt>
*** Web page: http://www.isr.ist.utl.pt/~yoda
*** Teaching Assistant and PhD Student at ISR:
*** Instituto de Sistemas e Robotica, Polo de Lisboa
*** Instituto Superior Tecnico, Lisboa, PORTUGAL
*** PGP fingerprint = 0119 AD13 9EEE 264A 3F10 31D3 89B3 C6C4 60C6 4585
IIRC the only full-height TLZ06 was the TLZ6L autoloader; the full height
TLZ04 was an option on the R400X expansion box though, but it was a proper
full height drive and not a half height hiding behind a big bezel!
For PC mounting it should slide straight into a standard removeable drive
bay and connect to any 8 bit SCSI card, for a uVAX II it'll have to be a
hack since the only supported drives in those were TK50/TK70 that connected
to their own controller cards (TQK50 and TQK70). The (I think) KFQSA was a
v.expensive quad-height QBUS SCSI card but I think it only had external
connections.....I can dig out some old books if it'll help.
a
> -----Original Message-----
> From: Clint Wolff (VAX collector) [mailto:vaxman@uswest.net]
> Sent: 04 September 2000 00:40
> To: classiccmp(a)classiccmp.org
> Subject: Need bezel for DEC TLZ06-AA
>
>
>
> Hi,
>
> I recently purchased a few DEC TLZ06-AA DAT drives, and they arrived
> today. Unfortunately, The bezel on them is the width of a 3.5" drive,
> but the height of a half-height 5 1/4" drive.
>
> Does anyone know where I can get normal 5 1/4" bezel for them?
> Any suggestions on how to mount them in a PC and a uVAX II?
>
> Thanks,
> clint
>
LIVERMORE, CA - September 5, 2000 [Vintage Computer Festival]
The Vintage Computer Festival announced today that an original
Apple-1 computer circa 1976 will be auctioned off on the first
day of the 4th annual Vintage Computer Festival, happening on
September 30th through October 1st at the San Jose Convention
Center in San Jose, California. "This is the machine that
launched Apple Computer and begat one of the most amazing Silicon
Valleysuccess stories in the history of the computer business,"
said Vintage Computer Festival (VCF) founder and organizer,
Sellam Ismail. "The story of Apple Computer is well known: two
guys working out of a garage create what turns into a multi-
billion dollar business. This computer represents the humble
beginnings of an industry that has seen an incredible explosion
of growth in such a relatively short span of time."
The Apple-1 was the brainchild of Steve Wozniak, who designed
and built it in his spare time in the mid 1970's while still an
employee at Hewlett-Packard. Management at HP saw no future in
the computer and released all rights to Wozniak. Steve Jobs,
Wozniak's high school friend, convinced Wozniak to market the
machine. Jobs managed to land an order for 50 of the machines
with a chain computer store called The Byte Shop, helping to
launch the fledgling Apple Computer. The original selling price
was $666.66.
"The public eye is currently on Apple and Apple's CEO Steve Jobs
since they are riding a crest of excellent product releases and
climbing revenue," says Ismail. "This auction will hopefully
attract those who wish to own a piece of the history of Apple,
one of the most celebrated Silicon Valley success stories. This
machine also represents the birth of the microcomputer itself,
and is a very significant machine, both for its place in
computing history and for its rarity. There are probably less
than 200 of these remaining in the world."
Moreover, the machine going to the auction block is in a
condition and state of completeness not seen in similar recent
auctions. Says Ismail, "this computer comes with all the
accessories it was originally sold with, making it the most
complete Apple-1 to come to auction in recent times."
The owner of the computer, Ray Borrill, operated a chain of
computer stores in the Midwest in the late 70's, one of the first
in the nation. This particular Apple-1 was one of 15 units
ordered directly from Steve Jobs. It was used as a display model
and was never sold. Borrill decided to hold onto it through the
years for posterity. Borrill, now retired, has decided that it's
time to pass the machine on to someone else who will continue to
appreciate it as he did.
The Vintage Computer Festival is a yearly event in the Silicon
Valley that celebrates computer history by featuring speakers
>from computing's past as well as a hands-on exhibit of old
computers and computing artifacts, some dating back over half
a century or more. This is the fourth year of the Festival.
Speakers this year include Jim Warren, founder and organizer of
the West Coast Computer Faire, as well as Larry Tesler, who was
at one point Apple's chief scientist and also worked at the
prestigious Xerox Palo Alto Research Center during the 1970s.
Warren and Tesler will be participating in a roundtable
conference on day 1 of the Festival.
This year, California Extreme 2000 (http://www.caextreme.org), a
classic arcade game show featuring hundreds of classic video games
and pinball machines, joins the VCF. The VCF and California
Extreme 2000 share the same venue, and discounts will be available
at the door for attending both events.
Information about the Apple-1 auction can be found at
http://www.vintage.org/2000/apple-1.html. General information
about the fourth annual Vintage Computer Festival can be found at
http://www.vintage.org/.
MEDIA CONTACT:
Sellam Ismail
925/371.1050 x102
sellam(a)vintage.org
http://www.vintage.org
Sellam International Man of Intrigue and Danger
-------------------------------------------------------------------------------
Looking for a six in a pile of nines...
VCF 4.0 is September 30-October 1
San Jose Convention Center, San Jose, California
See http://www.vintage.org for details!
