I have an AT 286 clone motherboard with math coprocessor that needs a
home. I only ask for postage. I'm in southern California.
--
David Griffith
dgriffi at cs.csubak.edu
We received an inquiry from someone who's looking for someone else to
furnish him with CP/M and HDOS diskettes for his H89 (hard and/or
soft sectored, 5.25" or 8"). While we could probably do it, it's
outside of what we normally handle (i.e. conversion).
If anyone would like to put their old H89/Z89 to some use for a few
bucks (I assume), drop me a note offlist and I'll hook you up.
Cheers,
Chuck
>
>Subject: Re: Predicta?! -> philco computers
> From: woodelf <bfranchuk at jetnet.ab.ca>
> Date: Sat, 20 Oct 2007 11:02:27 -0600
> To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org>
>
>Henk Gooijen wrote:
>>> Date: Sat, 20 Oct 2007 08:36:13 -0400> From: wdonzelli at gmail.com> To: cctalk at classiccmp.org> Subject: Re: Predicta?! -> philco computers> > > I did not look, because I did not think any were left.> > Talk to hams. RTTY was very popular many years back. Hams never throw> anything away.> > --> Will
>> That's definitely true :-)
>>
>> Henk, PA8PDP
>Thats why you can't buy any. :)
>Also some sort of TTY is still used for DEAF people to talk over the phone.
Lesse a bunch of years ago I gave one [asr33] away due to space
and noise in use.
More recently I refused a KSR36 on no space to use or store it.
They are out there though many will likely require basic maintenace
use as is.
Of course a small computer can simulate any as needed.
Allison
On Fri, 19 Oct 2007 21:21:24 -0400 Dan Roganti <ragooman at comcast.net>
wrote:
> Jules Richardson wrote:
>> Grant Stockly wrote:
>>> The base eZ80SBC from howard is $250. Add $100 for the disk
>>> board...
>>
>> Hmmm, I suppose if a SASI interface and ST412 interface could be
>> added
>> to talk to those kind of devices too, $250 wouldn't be too bad for
>> the
>> 'core' portion. $350 for just a floppy interface is perhaps a little
>> on the high side, though.
>>
>> (Someone here was working on a generic ST412 interface - presumably
>> over-sampling tack data and processing in software - weren't they?
>> Can't remember who it was now...)
>>
>>
>
> There's already an inexpensive eZ80F91 development board from Zilog
> for
> the budget conscious -only $99. And it's complete with cables, jtag
> debugger, IDE, and C compiler. It has an ethernet port among other
> interfaces. It doesn't have USB, but easily done with a RS232-USB
> converter. The expansion interface provides all the GPIO's to let you
> connect a floppy interface.And it's available from Mouser or Digikey.
> http://www.zilog.com/products/partdetails.asp?id=eZ80F910200ZCO
You might want to look at Luminary Micro's Stellaris LM3S6965
Evaluation Kit ($99 @ Digi-key <http://www.luminarymicro.com/products/
ekc-lm3s6965_ethernet_evaluation_kit.html>). The beast is an ARM
Cortex with USB and Ethernet along with a bunch of I/O. There is GNU
support as well as several eval compilers. Fun toy.
CRC
> You know, it's ironic this topic has come up, as I'm currently working
> on
> converting my 3ph SGI Onyx to single phase and had looked into static
> and
> rotary phase convertors. Having never had any reason to look at one
> before
> I started anew - and decided quickly that they did not appear to be
> safe
> for computer use.
Disclaimer- I have no 3-phase equipment, nor any 240V-required
computers so take this with the contempt it deserves.
For the PSUs (for given machine X that does not have 3-phase motors for
blowers or drives, or another thing that requires the rotating field of
3-phase), aren't they composed of (roughly) 3 standalone PSUs that
convert the incoming power to a DC-source feeding the rails? Therefore,
(and especially if it is wired phase -> neutral rather than
cross-phase), provided the voltage supplied by a single-circuit would
be within the range of acceptable input voltages for the PSU, couldn't
they be driven by 1 split 240V circuit (driving 2 at 120V
hot-to-neutral) and a third 120V line feeding the third PSU?
> I'm not familiar with what happened to the computer division with the demise
> of Philco
They were bought by Ford, and survived into the late 60's.
The 212 at the Computer History Museum is a Philco/Ford product.
I was at my local scrapper (Tucson, AZ) and got to look at recent
acquisitions that were stored in an adjacent warehouse. In the short
time I was allowed to look I saw at least two RL02s, numerous disc
packs including an alignment pack, a DECStation 3300 case (no
boards), and several what appeared to be microPDP11 crates (again,
unpopulated). In another area was a DEC 9000 rack which looked like
it had a couple of CPUs and disc arrays. When I went to look at some
test equipment, I found an SGI O2 which lights and talks (asks for
password to do anythng...), but no disks (there are plenty lying
around...).
If there is any interest I'll have the rippers and cutters stayed and
connect you with the knowledgeable party.
CRC
> From: "Chuck Guzis" <cclist at sydex.com>
>
>> No, when I've talked to people (in the UK) about a rotary converter,
>> they were talking about a large 3 phase motor wired up with big
>> capacitors so that it could be started on a single phase supply and
>> once turning, the other two windings would provide the other two
>> phases whilst the pulses to the first winding would keep it running
>> at the right speed. Of course for a 10kVA supply, I would have needed
>> at least a 30kVA motor as only one phase was actually driving it.
>
> There is the class of the commutating synchronous rectifier (for want
> of a better made-up term). See
>
> http://www.nycsubway.org/tech/power/rotary.html
Amazing and very interesting. It seems for every accepted modern
technology there were always alternative ways used in the past which
have been almost forgotten. Take the crank pin and crankshaft, back
in the early days of steam power, someone had a patent on that, so
someone else thought up two cog wheels rotating round each other in a
similar motion with tie rods to keep them in mesh but did not
transmit power. Or take the poppet valve used in engines, an
american, Mr Knight invented a sleeve valve sold under the name
Silent Knight, which fitted between each piston and cylinder in an
engine, which allowed much larger inlet and outlet ports to be in the
wall of the cylinder. In the calculation field, there have even been
base 3 mechanical calculators using digits 0, +1 and -1 instead of
conventional binary or BCD.
> To be honest, I suspect that a gizmo of this vintage is simply too
> much of an antique to have been used to power any mainframe systems.
I would think the slip rings would produce the odd spark which would
generate big glitches.
>
> The term for the ildling 3-phase motor driven from a single-phase
> source via one or more large capacitors used here in the US is
> usually "Phase Converter" or "Rotary phase converter" or "Dynamic
> phase converter" to differentiate itself from a simple capacitor bank
> feeding a 3-phase motor, sometimes called a "static phase converter".
> There is a trade name for the former, Rotocon, and occasionally
> you'll see their reference to their products as "rotary converters",
> but that's not general usage.
Looking on Wikipeda, it says 'Rotary Converter' covers both types,
and they say, even covers motor generator sets.
>
> Regardless, I don't know if I'd try powering a three-phase computer
> power supply from one.
Nor me, thats why I bought the proper diesel powered generator,
though almost antique and a hundred times bigger than a modern
generator, it would just chug on continuously, for years on end if I
needed it to with simple topping up of oil, water and fuel and a
twist of the oil cleaning discs now and again. One decade I might
have to give it an oil change I suppose, its probably got some of the
original wartime oil in it, incredibly diluted of course with all the
new stuff added over the years. The other maintenance was to
periodically wash the exhaust through with caustic soda (sodium
hydoxide) to unblock all the carbon deposits.
_ _ ______ ______ __ __
| | | | | __ | | ____| \ \ / /
| | | | | | |_| | | \ \/ /
| | | | | | | |___ \ /
| | | | | | | ___| / \
\ \/ / | | _ | | / /\ \
\ / | |__| | | | / / \ \
\/ |______| |_| /_/ \_\
November 3-4, 2007
Computer History Museum
Mountain View, California
http://www.vintage.org/2007/main/
Well, here we are, a little more than two weeks away from VCFX, the
tenth annual Vintage Computer Festival. This is it, folks. The
culmination of a decade of computer history celebration. From a simple
yet over-budgeted inaugural event held at the county fairgrounds to a
multi-dimensional extravaganza hosted in the hallowed halls of the
Computer History Museum, the Vintage Computer Festival has come a long
way. I wasn't quite sure we would even make it to this point, but
here we are! I'm as amazed as anyone.
\_...> Session Schedule
As long-time VCF attendees know, one of the most anticipated aspects
of the Festival is the roster of speakers and sessions we assemble
each year. This year we've outdone ourselves. We have the most
sessions we've ever featured at the VCF, so many in fact that we
opened up a third track! There's something here for everyone. See
below for the schedule outline but check the VCF 10.0 website for
complete session abstracts and speaker biographies.
The current speaker schedule is as follows (the name of the room where
the session is being held is in parenthesis):
Saturday, November 3
Track 01 (Grand Hall)
Time Topic Presenter(s)
------- ------------------------------------- -------------------
10:00am The Role of the TRS-80 in Computer Theresa & David
History Welch
11:00am Deconstructing the Intel 4004 Tim McNerney
12:00pm Intel SIM8-01: A Proto-PC Zbigniew Stachniak
1:00pm The Computer Revolution 30 Years On Lee Felsenstein
Track 10 (Boole)
Time Topic Presenter(s)
------- ------------------------------------- -------------------
10:30am The History of RAMAC: The First Al Hoagland
Spinning Disk Drive
11:30am More Disk Drive History Shrikant Desai
12:30pm WeirdStuff Panel Dave MacDougall,
Chuck Schuetz &
Jim Schuetz
Track 11 (Theater)
Time Topic Presenter(s)
------- ------------------------------------- -------------------
11:30am The DigiBarn Bruce Damer, Al
Lundell & Galen
Brandt
2:00pm Director's Notes Greg Maletic
3:00pm Director's Notes Jason Scott
Sunday, November 4
Track 01 (Grand Hall)
Time Topic Presenter(s)
------- ------------------------------------- ------------------
10:00am The Impact of Magnetic Stripe Media Jerry Svigals
on Computers
11:00am Booting Sage Computer - A Subjective Rod Coleman
Retrospective
12:00pm Recent Developments in Conway's Life, Bill Gosper
and a Miniblast from Macsyma's Past
1:00pm The LINC: A Paradigm Shift Tom Chaney, Wesley
Clark, Jerome Cox,
Gerald Johns,
Severo Ornstein,
Maury Pepper,
Scott Robinson,
Mary Allen Wilkes,
Bruce Damer
Track 10 (Boole)
Time Topic Presenter(s)
------- ------------------------------------- -------------------
10:30am Thank You, Jim Jack Rubin
11:30am Phreaking History Phil Lapsley
12:30pm The First Computer Store: What Was Lance Leventhal
Then, What Is Now, and Where We Are
Heading
2:00pm PDP-1 Restoration Review Lyle Bickley, Eric
Smith, Ken Sumrall
& Steve Russell
Track 11 (Theater)
Time Topic Presenter(s)
------- ------------------------------------- -------------------
11:30am International Obfuscated C Code Landon Curt Noll
Contest Awards Presentation
3:00pm Creatively Vintage: Retro-Tech in Art Christine Finn
Space
* Some titles are subject to change
Complete information on the VCF 10.0 session schedule can be found
here:
http://www.vintage.org/2007/main/speaker.php
\_...> The Vintage Computer Film Festival
The 2nd annual Vintage Computer Film Festival accompanies the VCF
again this year. This is a fesitval within a festival whereby we show
films, documentaries, shorts and clips that either have a vintage
computing or technology theme or are otherwise vintage in their own
right. Sometimes we choose stock footage from old computer industry
marketing or training videos and sometimes we feature previews from
upcoming documentaries (including the filmmakers themselves giving
introductions).
Screenings run both days of the VCF. The full Film Festival schedulexi
will be posted by Saturday at:
http://www.vintage.org/2007/main/film.php
\_...> You Can Still Be An Exhibitor!
Exhibit registration closes on October 29th. Exhibiting is the best
way to experience the Vintage Computer Festival. It is an enjoyable
and rewarding experience. But don't take my word for it, be an
exhibitor and find out for yourself. All you really need is a neat
old computer, a good story to tell about it, and a little bit of time.
Check out the VCF 10.0 exhibit page for more information:
http://www.vintage.org/2007/main/exhibit.php
\_...> Computer History Museum Tours & Demos
Each year the Computer History Museum's all volunteer docents give VCF
attendees a series of guided tours of the Museum's fantastic
collection, providing historical stories about various artifacts in
the collection along the way. This year they've added themed tours
that cover Internet and Video Game history in more depth and detail.
Tours are held in the afternoon and run at hour intervals. They've
also scheduled demos of the restored DEC PDP-1 and IBM 1401 computers.
The tour and demonstration schedule is available here:
http://www.vintage.org/2007/main/tours.php
\_...> Buy, Sell and Trade at the VCF Marketplace
The VCF Marketplace features a wide variety of interesting vintage
computers and related items for sale from a variety of vendors. There
is simply no better place to buy and sell vintage computers than at
the VCF Marketplace. Vendor booths are still available. For more
information on selling at VCFX, please visit:
http://www.vintage.org/2007/main/vendor.php
\_...> Lodging Options
For our out of town guests, we've arranged hotel room blocks at fine
local hotels at discounted rates. There is still time to book a room
at a reduced rate, but don't delay as the registration deadlines are
looming. Full lodging information is here:
http://www.vintage.org/2007/main/lodging.php
See You There!
Complete information about VCFX, including the speaker schedule,
exhibit roster, end everything else can be found on the VCF 10.0 web
pages:
http://www.vintage.org/2007/main/
Best regards,
Sellam Ismail
Producer
Vintage Computer Festival
;)
--
Sellam Ismail Vintage Computer Festival
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