Hi
Sure sounds like a thermal limit switch. It could also
be a Poly-Fuse.
As for voltage of the transformer, if it is bad, one can
still determine the ratio by cutting the wires off with
a single cut per turn and then count the wires for the
primary and secondary. One does have to watch out if there
are taps, other than center tap.
Dwight
>From: "Vintage Computer Festival" <vcf(a)siconic.com>
>
>
>So after beating the shit out of this stupid TI power supply (none of your
>suggestions worked, thanks) I come to find that it does have an internal
>fuse and that it is complete intact. Wonderful. This thing is shot
>beyond repair at this point. It wasn't intended to ever be opened
>apparently.
>
>Anyway, hopefully I can figure out what this pile of garbage was supposed
>to be putting out. Of course, there are no markings on the housing of the
>transformer.
>
>There is an IC in here. It's inline with the hot side of the input
>voltage. The markings are thusly:
>
>UMI EI
>X25 150(degree symbol)C
>2.5A 250V~
>
>A varistor?
>
>Anyway, this is a heap of junk now.
>
>--
>
>Sellam Ismail Vintage Computer Festival
>------------------------------------------------------------------------------
>International Man of Intrigue and Danger http://www.vintage.org
>
>[ Old computing resources for business || Buy/Sell/Trade Vintage Computers ]
>[ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]
>
>
On Dec 19 2004, 15:07, Glen Goodwin wrote:
> Okay, so can someone tell me why -- suddenly -- a whois on my
> domain name -- acme-sales.net -- does not show any of my contact
> information? It did before, but something has changed.
Er, it does for me:
$ whois -h whois.opensrs.netacme-sales.net
Registrant:
ACME Enterprises of Orlando
6192 Edgewater Drive
Orlando, FL 32810
US
Domain name: ACME-SALES.NET
Administrative Contact:
Goodwin, Glen (email addr here)
(4 lines postal address here)
(phone number here)
Technical Contact:
(same 6 lines here)
Registration Service Provider:
Infinitum Technologies, domains(a)servercove.com
407-481-2434
407-481-2379 (fax)
http://www.servercove.com
This company may be contacted for domain login/passwords,
DNS/Nameserver changes, and general domain support questions.
Registrar of Record: TUCOWS, INC.
Record last updated on 26-Aug-2004.
Record expires on 22-Sep-2005.
Record created on 22-Sep-2003.
Domain servers in listed order:
NS2.ZIGIO.COM 66.193.174.19
NS1.ZIGIO.COM 66.193.174.18
Domain status: ACTIVE
$
--
Pete Peter Turnbull
Network Manager
University of York
On Dec 19 2004, 12:32, Pierre Gebhardt wrote:
> does anybody know, how much memory the 11/24 can take ?
> I heard something about 1 MB, others say 4 MB somewhere on the web.
Yes, I'm a bit confused...
> Currently, it's configured with 1 MB.
A basic 11/24 processor uses 22-bit addressing but a Unibus uses 18-bit
addressing and therefore can address up to 256KB; the top four bits of
address are therefore dropped by the MMU in a basic 11/24. If it's
fitted with a Unibus Map (KT24, M7134, which also replaces the M9312
bootstrap card) then an 11/24 can use 22-bit addressing, on an extended
Unibus, giving it a 4MB address space. It does this by feeding the
output of the MMU through 31 mapping registers which provide
relocation, so at any given moment you can actually only address 31
pages, each of 4KW (8KB), plus the I/O page; you need to re-program the
mapping registers or the MMU to access the whole 22-bit range.
I don't know where the 1MB limit comes from, that would be a 20-bit
address range.
> Furthermore, does a DELUA - Card properly work in it ?
> There's only the card, the bulkhead assembly is missing, I would have
to build it by myself...
Yes, that should work.
--
Pete Peter Turnbull
Network Manager
University of York
Hello all,
does anybody know, how much memory the 11/24 can take ?
I heard something about 1 MB, others say 4 MB somewhere on the web. Yes, I'm a bit confused...
Currently, it's configured with 1 MB.
Furthermore, does a DELUA - Card properly work in it ?
There's only the card, the bulkhead assembly is missing, I would have to build it by myself...
Pierre
__________________________________________________________
Mit WEB.DE FreePhone mit hoechster Qualitaet ab 0 Ct./Min.
weltweit telefonieren! http://freephone.web.de/?mc=021201
Howdy all,
I have two Macs, a Mac IIsi and 7200, I would like to get rid of. Does
anyone have any recommendation for a Mac collectors group that might
have some individuals interested in these machines? Listings for these
machines on both Ebay and Vintage Marketplace have yeilded no takers.
Thanks,
-- Michael
1972 Univac 1100 manual
Analog computer Programming Patch Panel
Motorola MC68HC11 Evaluation Board
Tektronix manuals in German, French, Japanese and English
HP 9000 800/900 memory
DEC OS/78 manual
InfaRed Heat Gun
See <http://search.ebay.com/_W0QQgotopageZ1QQsassZrigdonj>
Bob,
On Thu Dec 9, 2004, you wrote:
> Its kinda odd how these terminals 'wake-up' with the text input
> directed to the graphical display rather than the alpha display layer.
That shouldn't happen unless the Keyboard Interface PCA is strapped for
"compatibility mode." Open the unit, pull the Keyboard PCA, and check the
DIP switches at the top of the card. Switches P and Q should be set to 0
(closed) for normal operation.
With both closed, the terminal should power up in alpha text mode. Then it
may be switched to graphics text via an escape sequence or by the keyboard
TEXT key, as desired.
(I have an HP 2647A. P and/or Q are set to emulate a Textronix graphics
terminal.)
-- Dave
I just recently got an HP25. I like it this much (1E99++).
I am putting together an applications pack of sorts that I will
be able to make available as a PDF. I have 4 programs so far,
Do any of you have/use the HP25 calculator? Do you have an
HP25 programs you'd like to see in print?
Send programs off list: ron.hudson at sbcglobal dot net
All programs will be added. I have the HP25 applications
book, let's not duplicate anything there.
>That is almost certainly vacuum fluorescent. There are a lot of such
>displays that use the same kind of seven-segment number formation you
>commonly see with LEDs.
Yes, I did more digging and found a web site specializing in vintage
calculators, and it had a full discussion on the different types of
displays... and yes, it does appear that I have Vacuum Fluorescent
Display Tubes. This was reaffirmed with a closer inspection (with the aid
of a flashlight) and each of the segments appears to be an individual
tube (you can see the curves of the front as well as the typical peaked
top).
I've yet to open it to see if they are socketed or soldered... I figured
I'd leave that until I new more about the technology and if the tubes are
repairable, or if I can get the correct replacement part.
-chris
<http://www.mythtech.net>
Hi again Guys,
Had a VT-180 show up on my doorstep last week, and knowing another
local collector who had one in "unknown condition", I decided to
spend some time working on the two machines.
Good news is that I have both of them working and booting up.
But there are assorted bits and pieces missing, if anyone happens
to have any of these VT-180 parts kicking around, please let me know:
- One machine is missing the drive cable (the data cable from the VT-180
to the RX-180 disk unit)
- One machine is missing the metal back cover/shield for the card cage
- Both machines are missing the plastic shroud which covers the above
mentioned cover/shield and connectors.
- Both machines have "VT-100" nameplates - would like to find the VT-180
nameplates.
- One machine is missing the ESC and '3' keys from the keyboard - this
is a standard VT-100 keyboard, so keys from a VT-100 would also be a
perfect match.
Regards,
Dave
--
dave04a (at) Dave Dunfield
dunfield (dot) Firmware development services & tools: www.dunfield.com
com Vintage computing equipment collector.
http://www.parse.com/~ddunfield/museum/index.html
> Date: Sat, 18 Dec 2004 11:11:26 -0600
> From: "Keys" <jrkeys(a)concentric.net>
> Subject: Who Made/Makes the World Smallest Harddrive
> To: "cctalk@classiccmp" <cctalk(a)classiccmp.org>
>
> IS it IBM? I need one for a museum display we are putting together.
Thanks
>
Toshiba has one less than an inch across that holds 2.5-GB. They also
had another one that was 1.8-inches and held 40-GB.
http://news.bbc.co.uk/2/hi/technology/3381997.stm
On Dec 17 2004, 13:43, Ashley Carder wrote:
> > Does anyone know what the oldest documented functional computer is
that is
> > connected to the internet?
> ..... and is accessible by others via telnet, etc?
I'd suppose David Gesswein's PDP-8 would be a candidate. I have a
PDP-11/83 called titus running BSD2.11 which is internet-accessible,
and my PDP-8/E has a serial line on a terminal server which is also
internet-accessible, but neither is powered up 24/7.
--
Pete Peter Turnbull
Network Manager
University of York
I know this is a bad subject, but I was reading an article about
windows nt and the influence dec had on it. In the article it said
that compaq kept development of windows 2000 up to 1999 on Alphas.
Has anyone here seen it running on an Alpha and do you know if many
people developed software to run on it. I knew they had NT on a lot of
architectures but 2000 is a new one.
Thanks
Dan
I got this email today.
Does anyone in Italy or Europe want a SWTPC 6800 system?
Michael Holley
www.swtpc.com/mholley
----- Original Message -----
From: "Paolo Meyer" <paolo(a)igc.org>
Sent: Friday, December 17, 2004 8:49 AM
Subject: request of info about SWTPC
> Dear friend,
> I was one of the first italian SWTPC users. Now I need more room in my
> apartment so I need to give away some original BOXES and Boards.
>
> Do you know if exist in Europe or at least in Italy someone who can
> be interested in this kind of olds stuff?
>
> Many thanks for your help.
>
> Paolo Meyer
I second the spare parts threat... no need.
As for the cable pinout, I may have it with me (I just flew into Seattle from Virginia for the holidays). If I don't then I can email the connection scheme when I get back after the 2nd of January. I detailed not only the external cable, but the internal cable to make the internal drive a double density.
I can send iPDS disks after I get back on the 2nd also.
I'm with Dave, no need to replace the internal drive. Leave all the hardware as-is for now. The double density is the controller - not the drive.
best regards, Steve Thatcher
I saw an ebay auction about a vaxbrick 4000-50. What is a vaxbrick
4000-50? I googled and didn't find much information. I'd guess that it
uses NVAX cpu. But, what is the the clock frequency, and how big is
the cache? What memory options does it support?
vax, 9000
> Does anyone know what the oldest documented functional computer is that is
> connected to the internet?
..... and is accessible by others via telnet, etc?
Ashley
>From the most recent 'Computer Collector' newsletter
(http://news.computercollector.com):
> Early Nov., 2004: At the recent VCF 7.0 event, Tim Robinson displayed
> Meccano versions of Charles Babbage's Difference Engine and Vannevar
> Bush's Differential Analyzer (http://www.meccano.us).
It's nice to see Evan has mentioned this lovely Differential Analyser,
and I am sorry I missed seeing it (thanks especially to Erik Klein for
his nice photos of it, http://www.vintage-computer.com/vcf7.shtml, which
first alerted me to its having been there).
Many years ago (1980) I made myself a simple two-integrator Differential
Analyser, which worked on exactly the same principle. I was inspired by
the Meccano machine which was on display at the Museum of Transport and
Technology in Auckland - this was one of a number of similar machines
made in the '30s - and found a construction article in the Amateur
Scientist column of Scientific American.
I was wondering whether anyone here with '70s issues of SciAm might be
able to make a copy, or at least give a definite date for it. It would
have been in the early-to-mid '70s, certainly before '78.
Thanks, and if anyone still hasn't seen Tim's machine, go to
www.meccano.us and prepare to be amazed.
(Sellam, give up on that TI thingy and go buy a Meccano set)
--
Lawrence Wilkinson lawrence(a)ljw.me.uk
Ph +44(0)1869-811059 http://www.ljw.me.uk
>
>Message: 9
>Date: Thu, 16 Dec 2004 20:40:23 +0000
>From: cvendel(a)att.net
>Subject: Vintage Edison Recorder...
>To: cctech(a)classiccmp.org
>
>
>This is OT, however,
>
> If anyone is into historical items, this is something you should have a
gander at:
>
>
>http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=38029&item=229457049
0&rd=1
>
>
>True piece of early Edison history there!
>
>
>Curt
>
Wow! OT or not, this is great!
Thank you,
Robert Greenstreet
----------------------------------------------------------------------------
--
Hi,
Dear people, I do apologise if my attitude came across that "I'm gonna rip this apart for spares if I can't fix it", or if I came across aggressive. It was not my intent to antagonise, nor was it my desire to induce sympathy. Unfortunately the written word often lacks the character and nuances of speech.
So, let me rephrase....
I purchased an old Intel MDS Series-4, specificaly for spare parts for my operating MDS Series4. The advertised unit has a memory error, but the rest of it checks out fine. My preference is to try and fix the broken unit. However, should my main unit have a problem I can always use the busted one to be a donor. If anyone knows exactly what chip 0000:8001 refers to (when doing a RAM test), then I will replace the offending component and have this unit fully operational. Which will make me a happy chappy.
When I went to collect the unit the seller also said I could have the 225 unit. I spent a lot of time cleaning dirt and mud out of the 225 and then searched the internet for information. My intent was, and still is, to get this old beast running as good as they day it was made. If it wasn't, then I would of not bothered to take the unit or search for info on it, or come to this forum for advice.
My comment, regarding "using it for spares" merely means it will be put away, somewhere safe and sound with all my other old stuff - some of which I have had to use for donor chips to get some SBC and other boards operational. It would indeed be a sad, sad day that I would need to pull it apart for bits. Once again, I apologise if my comments caused you angst.
Now, back to the 225 issue. Yes, the disk drive array is a blue-box, twin-floppy unit that sits atop the main unit. The main unit has the two-board set that is required to run this double-density drive array. I have contacted the seller to ensure there isn't a cable left behind. Hopefully he has it still and that will be great. If not, I am more than happy to wait for pin-outs and, once supplied, I will make the cable. The other blue-box is the expansion chasis that sits under the main unit to give it a few more slots. I haven't powered up or even cleaned the disk-drive or expansion unit yet. They'll be done during the week. In the interim, I'm reading through the pdf files that you have kindly pointed me to. As per your advice, I won't be pulling apart the unit or do anything untoward until I get more information regarding boot disks and cable pinouts.
The iPDS was a freebie given to me when I purchased my initial MDS Series4 some years ago. I have found very little information on this unit and therefore it has been set aside and I thought, "why not ask about the iPDS while I'm here" and it's good to see that there are some people out there that can help me get this unit operational. Other than that, I have no idea about this box - though I'd dearly love to get it going.
I do have an old 486 DOS machine with 3 and 5 inch diskette drives, so I can get the iPDS disks done on that machine.
My aim, with all this old stuff is to fix it as my main task. I don't collect things (like chip collectors) for looks. I like and want (almost have an inbuilt urge) to make it work and I love to have them all operational. I have fixed and have operational my old SC/MP, 6800 Micro Module, Central Data 2650, AIM65, STD bus and various Intel SBC systems - however, the old TI99/189 system (and a few others) have eluded me for quite some time, but I won't give up on them. Furthermore, I have an inventory of old processors, memory and peripheral chips and, using the Series4 with ICE85B, I build 8085 systems. I am hoping the 225 gets operational so I can do some stuff with the 8080 chip - like do some old S100 work and repairs on an SBC80/24. I'd love to build an 8080 system also.
So please, don't think of me as a destroyer of old systems. I'm a preserver, who should of used a better phrase than "used for spare parts". :)
I do hope you accept my apology, and I am extremely grateful for your assistance and advice.
seeyuzz
river
Hi,
Thanks for the reply. I went and loaded all those docos regarding the Series 2XX. Great stuff.
I cleaned up the connectors to the IO board and now the floppy drive engages upon reset. I ran the diags and all system work and even the floppy drive passed its tests with a scratch disk. However, I get a disk error when I boot the ISIS-II system disk. I tried a few other disks and the ones that are double-density all give a "disk error", yet the single-density ones just say "not bootable".
So, I guess I need to find a single density 8-inch ISIS-II boot disk. I can't use the one from my Series-4 'cos it uses 5-1/4 disks. THe unit also came with a dual disk drive array - yet another amazingly heavy blue box, and an expansion chasis. It appears that there are no cables to attach the disk array. The 225 has the two disk controller cards in the chasis and the cables are routed to the J8/J9 connectors, but I beleive there is a cable that I require to attach from these connectors to the disk array. I'd love to get the 225 fully operational 'cos it came with the ICE-80 (which I cannot use on the Series-4, which has an ICE-85B), ICE-51 and ICE-49. I especially want to use the ICE-80 so I can do some 8080 development (may as well use the stock of chips I got).
I'm gonna see if I can pull out the single-density drive in the 225 and put in one of the double density drives from the array. However, before I do that, does anyone know the cable pinouts - 'cos I might try and make a cable first. Or does anyone know where I can get a cable?
In the final run, if I can't do anything much with it, I can always use the parts for spares and other stuff.
Oh, final question... I also have an iPDS that's been waiting for a boot disk. Can I use my Series-4 ISIS-II disks in this unit? Will it boot, or is this unit doomed to be pulled apart for spares also?
seeyuzz
river
>Are you sure it's a LED display? That sounds more like behavior I would
>expect of a vacuum fluorescent display. If an LED really is doing that,
>the problem is with the electronics, not the diplay.
I can't be sure. I didn't think it was an LED (the unit is from around
1970 or so), but when I looked at it a little while ago, it looked kind
of like LED segments behind the plastic lens.
They glow a bluish green if that is any help. They don't look like any
LED out today, that's for sure. I've never knowingly seen a vacuum
fluorescent display, so I can't compare.
If this is one, is it a problem that is fixable?
-chris
<http://www.mythtech.net>
