At 04:22 PM 12/14/98 -0800, Marvin wrote:
>Richard A. Cini, Jr. wrote:
>>
>> Hello, all:
>>
>> While looking through 1984 Bytes. I came across an ad for the computer
>> used in the bedroom scene in "Wierd Science". It's the Memotech MTX512. It's
>> a sleek black unit and appears to be based on the Z80A.
>>
>> Does anyone know anything about these?
>
>Not too much. I have one in mint condition that IIRC includes the manuals,
>etc. I was given about a year ago but haven't done anything with it.
>Anything in particular you would like to know?
Yeah, can it create babes from dolls? ; )
Les
Hi guys.
My dad just got a DG One through his shop; he threw it out before I could
catch him. <scowl>
At any rate, he has a few of the accessories left over from it. I know he
has at least the carrying case and he mentioned having a spare battery. I
should think he probably has a few more bits leftover, too. If anybody's
looking for accessories for their One, let me know and I'll get you in
touch with him.
Let's make sure that next time he doesn't throw that kind of stuff away.
(:
--
ok
r. r e d @ b e a r s . o r g
===========================
[ urs longa | vita brevis ]
Does anyone here know where I can get Windows and Linux versions of
Netscape 3.x or less, or Mosaic? I need these for computers that are
growing classic...
--------------------------------------
Max Eskin kurtkilgor(a)bigfoot.com
To those who were interested in access to my private file area:
I've think that I've fixed the authentication problems, so outside
access should work. Please be patient -- I'm new to Web site administration.
Please e-mail me again with the following as the subject header:
**SO:Private File Area
Each person will be issued a user name and password. I need full first
and last names, please (in order to keep with internal naming conventions).
And forget secure e-mail -- no one uses it. Another $10 sent to
/dev/null...
[ Rich Cini/WUGNET
[ ClubWin!/CW7
[ MCP Windows 95/Windows Networking
[ Collector of "classic" computers
[ http://highgate.comm.sfu.ca/~rcini/classiccmp/
[ http://highgate.comm.sfu.ca/~rcini/pdp11/
<================ reply separator =================>
It's a portable data terminal, with the thermal printer replacing a display
screen. They had built-in modems (at least my model 707 does) and could use
rechargeable battery packs or AC power. Truly the "laptop computers" of
their day. They were commonly used by salesmen, engineers, etc; anyone who
might have to dial in to a mainframe while on the road. Some selected specs:
Printing rate: 45 cps, bidirectional
Modem transmission speed: 300 bps
Weight: 2.04 kg (includes one roll of thermal paper)
Power consumption: 35 W maximum at 90 Vac
Operating environment: Temperature: 10 deg C to 40 deg C
Maximum altitude (!) 3000 m
Feel free to email me if you want more info.
Mark Gregory
At 06:48 PM 12/14/98 +0000, you wrote:
>This, Ti terminal Silent 700 looks like a headless thick notebook
>with real keyboard on it, full width thermal printer built in, bunch
>of ports on backside, with 2 phone-like jacks, berg connectors.
>
>What this for and its capabliites?
>
>Jason D.
>email: jpero(a)cgocable.net
>Pero, Jason D.
>
>
< _NOW_ c'mon boy, 20 years ago a 12" tube with 256 by
< 256 pixles b&w was considered as high resolution.
Not hardly. That would eb 1978 and 512x256 mono would have been a real
low end board. Cpmpucolor and several others were doing that but in
color.
Allison
Both 320k (8 sectors/track) and 360k (9 sectors/track) were used in a number of MS-DOS systems in the early 80's, and it's quite possible that any given MS-DOS implementation will support both of them and will properly recognize which way a disk is formatted through parameters in either the FAT or the boot sector.
----------
From: Don Maslin [SMTP:donm@cts.com]
Sent: Monday, December 14, 1998 6:34 AM
To: Discussion re-collecting of classic computers
Subject: Re: Comterm Hyperion - Boot disk?
On Mon, 14 Dec 1998 Innfogra(a)aol.com wrote:
> Looking at the June 83 ad for the Hyperion I noticed that it has 320K drives
> instead of 360K. If I remember right the 320K format is 7 sector not 8 sector
> drives.
No, it is 8 sector instead of 9 sector disk format. The drives are no
different!
- don
> I propose an experiment even though I too, believe it takes a special version
> of DOS. Get an old PC and format a DOS disk at the 320K format using ver 2.11.
> Transfer the system and see what happens.
>
> Paxton
>
donm(a)cts.com
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
Don Maslin - Keeper of the Dina-SIG CP/M System Disk Archives
Chairman, Dina-SIG of the San Diego Computer Society
Clinging tenaciously to the trailing edge of technology.
Sysop - Elephant's Graveyard (CP/M) Z-Node 9 - 619-454-8412
*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*
see old system support at http://www.psyber.com/~tcj
visit the "Unofficial" CP/M Web site at http://cws86.kyamk.fi/mirrors/cpm
with Mirror at http://www.mathcs.emory.edu/~cfs/cpm
The silent 700's were mostly used for time-sharing remote computing in the 70's. Some models (there were quite a few of them) had built-in modems (acoustic 300 baud for the most part). They were also used as local consoles (keyboard/printer). I believe that the printers were 30 chars/sec, but they may have been somewhat faster, perhaps as much as 120 cps. For their day, they were considered high-end and very desirable.
The look was as described, kind of like a laptop with no screen, or like a very compact electric typewriter.
Barry Watzman
----------
From: jpero(a)pop.cgocable.net [SMTP:jpero@pop.cgocable.net]
Sent: Monday, December 14, 1998 1:48 PM
To: Discussion re-collecting of classic computers
Subject: Saw one...what is that? TI printing terminal Silent 700.
This, Ti terminal Silent 700 looks like a headless thick notebook
with real keyboard on it, full width thermal printer built in, bunch
of ports on backside, with 2 phone-like jacks, berg connectors.
What this for and its capabliites?
Jason D.
email: jpero(a)cgocable.net
Pero, Jason D.
I believe that the 1602A is either a UART or a keyboard encoder.
Early terminals were built in one of two ways, either hard wired pure discreet TTL logic (such as the ADM-3) or as microprocessor based terminals, often with an 8008. Using a uP was much more expensive and was usually done only in very high end ASCII terminals or (almost always) in 3270 type terminals (connected to IBM mainframes via a coax cable interface).
Barry Watzman
----------
From: Sam Ismail [SMTP:dastar@ncal.verio.com]
Sent: Monday, December 14, 1998 10:12 AM
To: Discussion re-collecting of classic computers
Subject: Re: Keywords are not false advertising
On Mon, 14 Dec 1998, Tony Duell wrote:
> > I'm looking at the manual for this thing. It was a pretty righteous
> > terminal in its day. Maximum transmission rate is 9600 baud. It had a
> > video out so you could hook up an external monitor. According to the
> > schematic, the biggest chip on the I/O board is a TR1402A or 1602A (it has
> > both numbers written on it). I have no idea what this is. But there's no
> > 8008 in there. I think I checked it out when I first got it, and you
> > would've tried to get more than $10 out of me if it did I'm sure. ;)
>
> There are several terminals made by Beehive. Mine must be a later one -
> it has an 8008 in it (I am not sure what the UART is), a separate
> keyboard, but no joystick. Its main claim to fame is that it has a Hebrew
> character set in it as well as the normal one.
The one I have is circa 1974.
Sellam Alternate e-mail: dastar(a)siconic.com
------------------------------------------------------------------------------
Always being hassled by the man.
Coming in 1999: Vintage Computer Festival 3.0
See http://www.vintage.org/vcf for details!
[Last web site update: 12/07/98]
Saw a demo of a neat piece of software yesterday. Two people were about 35
miles apart. One pulled up a document on his computer. Gave access to it
to the other guy who had a mouse and cursor at his end which we could also
see on the screen. He could point to things, as the two people talked.
Control could have been passed to him at any time.
After a bit, the guy on our end decided he wanted to be able to see the
other guy, so he opened a box in the upper left corner of the screen, sized
it, and voila, there was a video image of the other guy. They were able to
talk and see each other, as they worked together on the same document.
Pretty darn cool, if you ask me.
Oh, I kinda lied. I actually only saw a videotape of the demo.
The actual demo had taken place 30 years ago in 1968, and the star of the
demo was Doug Englebart.
Think about your first reaction to what sounds like whiteboarding software
that is starting to become commonplace. Now consider that the demo was
filmed 30 years ago in *black and white*! That's how far ahead Englebart
and his team really were (or, how far we *haven't* come when we should have!)
Go check out http://unrev.stanford.edu/ for yourself.
--------------------------------------------------------------------- O-
Uncle Roger "There is pleasure pure in being mad
roger(a)sinasohn.com that none but madmen know."
Roger Louis Sinasohn & Associates
San Francisco, California http://www.sinasohn.com/
In a message dated 12/13/98 3:05:02 PM Pacific Standard Time, yowza(a)yowza.com
writes:
> Tell us, and let us chuckle now. 8080's are available from any surplus
> electronics shop in quantity. I sold one of my 8008's on ebay a while
> back "the CPU used in the Scelbi and Mark-8, before the Altair!" and got
> $15 for it. The chip collector niche is *much* smaller than even the tiny
> computer collector niche.
>
Did you advertise under the keyword "Gold". I think this is the key to selling
old chips. I agree that the chip collector niche is small. However there are
many more people that collect beautiful Gold objects. This is my target
market.
Scrap value of your 8008 is less than 25 cents. At $15 you did very well. I
plan on starting with my gold 8080s and EPROM's, not the most collectable
stuff. My main interest is in doing better than scrap value. I agree these
chips are available in every scrapyard. These came out of mine. Computer
collectors know this, gold collectors don't. Researching your market
important.
Keywords are everything. I noticed that even you got 'Altair' in the title box
of the 8008.
Paxton
In a message dated 12/13/98 3:21:31 PM Pacific Standard Time,
dastar(a)ncal.verio.com writes:
> With regards specifically to the auction in question, the item was listed
> as a "S100 BUS IMSAI ALTAIR Z80 EMULATOR". This item has nothing to do
> with emulating the S-100 bus. That is deceptive.
>
I agree that the listing is deceptive, poor English also. I doubt any court
would convict on the listings of the title box alone, they would rely on the
description to decide deception.
When I originally searched by category I got 50 pages to wade through. Like
most others I switched to keyword searches. This makes keywords much more
important than the actual description.
Lets take my gold 8080 for example. (It is over 10 years old so it is on
topic). While I would list it under CPUs my title would say something like
"Beautiful Gold Intel 8080 Microprocessor, Rare!
'Gold' and 'Intel' for the search engines. 'Beautiful' to get you to look at
the picture, a nice close-up larger than life size (with size disclaimer). The
quality of the photo is very important. It would be plugged into anti-stat
foam in a clear plastic box. I know some of the list would quibble over the
term 'Rare'. I have no real idea of the rarity. However after working with a
scrapper for years my guess is they 'are' rare.
My intended market, obviously is the jewelry collector or someone interested
in gold items, not a computer collector. Old gold electronics are very
attractive.
Whoever sold the emulator asked themselves who might buy this item and how do
I connect with them. They obviously thought that people searching for S100,
Imsais and Altairs would be interested. You don't have much room in the title
box. In my example above I might not have room for 'microprocessor'. It is
unfortunate that English gets left behind in the process. This also comes from
the poor job that schools today are teaching English.
The unfortunate part of this is that poor English is becoming more acceptable.
The Internet and it's use of keywords only contributes to this.
Paxton
How about the Philips P2000 family? I have not seen messages about
those machines on the list. Z80 system, 48K RAM, 16K ROM in a cart
so it was easy to change programs, micro cassette recorder that was
operated by the computer so no fiddling with buttons, floppy drives
optional, video 40x24 color (viewdata/teletext character set) or
80x24 monochrome. Started life as a dedicated word processor, BASIC
cart added later. There was a disk operating system that could work
with the programs originally meant for cassette use only, and CP/M
was available. P2000T was the 40x24 cassette version, P2000M was the
80x24 disk version. There also was a P2000C, which was a 'portable'
machine like the Kaypro's, but it ran CP/M only and was not compatible
with the P2000T/M. AFAIK they were all developed and produced in
the Philips factories in Austria.
Picture of a P2000M at
http://www.iae.nl/users/pb0aia/cm/sroom.html
Picture of a P2000C at
http://www.iae.nl/users/pb0aia/cm/lroom.html
Kees
--
Kees Stravers - Geldrop, The Netherlands - pb0aia(a)iae.nl
Sysadmin and DEC PDP/VAX preservationist - Visit VAXarchive!
http://vaxarchive.ml.org (primary) - http://www.sevensages.org/vax/ (mirror)
See my old computers at http://www.iae.nl/users/pb0aia/cm/
Net-Tamer V 1.08.1 - Registered
How about the exelvision EXL100? is that a single instance on the list?
I also have the IR joysticks.
Francois
-------------------------------------------------------------
Visit the desperately in need of update
Sanctuary at: http://www.pclink.com/fauradon/
In the 386 issue of PC Magazine, May 30, 1989, there is a two page spread
(p98&99) called "Another Kind of Memory." It is a timeline from 1890 to 1990
of historical milestones on the path to computerdom. Of special interest to
this group they list the Kenbak PC, 1971 as the first personal computer. The
Xerox Alto was the first workstation with a mouse, 1972. Mits Altair featured
on cover of Popular Electronics, July 1975.
They make no claims that the Altair was the first personal computer, only that
it was on the cover of a popular magazine.
Does anyone out there have a KenbaK PC?
Paxton
I have a C1P with a complete set of documentation and presale material
including schematics. i believe i also have a bare disk controller board, but
i dont know for sure. i might need some of my parts identified.
david
In a message dated 12/11/98 11:15:06 AM Pacific Standard Time,
george(a)racsys.rt.rain.com writes:
<< It has been at least 6 months so maybe it is time again.
I'm always looking for OSI hardware. I am specifically looking for C4 and
C8 machines and/or Floppy drives for such critters.
Perhaps we could create an inventory list among us and see if we might be
able to mix/match to build more complete systems.
I'll start:
I have the following:
C2-4p Empty case
C4p Comes up with 256 Bytes of RAM >>
At 06:44 PM 12/13/98 +0000, Tony wrote:
>> for originals or copies is the tricky part. Many tubes(valves) are still
>> available new as NOS or rebuilds or newly made. I even have problems on a new
>> digital scope finding some things from HP.
>
>It never fails to amaze me that I can get spare valves for a unit made 50
>years ago (or more), but can't get a new ASIC for a machine made 5 years
>ago....
>
>Sad but true...
>
Yes.
A few hundred valves/tube types I quess would be plenty for radios, TV's
computers, audio, scopes, etc. Including octal types which go back to the
1930's. Am ignoring the series string types in later tube TV's, such as (In
the US) "38qzy", etc, and CRT's.
I quess one could do the same with ic's with the 74 and 74ls series, even
with a few mos (microprocessors) parts thrown in. Even with transistors - a
2N2222 can go in many places. Not anymore...
-Dave
Looking at the June 83 ad for the Hyperion I noticed that it has 320K drives
instead of 360K. If I remember right the 320K format is 7 sector not 8 sector
drives.
I propose an experiment even though I too, believe it takes a special version
of DOS. Get an old PC and format a DOS disk at the 320K format using ver 2.11.
Transfer the system and see what happens.
Paxton
ok, so its not a classic computer but there was a discussion a while back
about ocilloscopes and i happened upon a model 503 at a thift store for $80.
is it worth getting? presumably it works but i have no idea how one would test
it, much less use it.
david
In a message dated 12/13/98 4:52:35 PM Pacific Standard Time,
ard(a)p850ug1.demon.co.uk writes:
>
> There is only one place where an 8008 should end up. In a circuit that
> needs one. Like the frontpanel controller of my 11/34. Like the control
> logic board of my Beehive. Like a Scelbi. Or a dozen more machines.
Personally I agree with you.
>
> If they all get turned into jewellery, where they're going to get ruined
> by static, then where do us computer collectors get our spares from?
Don't worry, they won't all be made into jewelry.
>
> There are already some chips that are _very_ difficult to find. The Intel
> 8271 disk controller (used in older Acorn machines, up to and including
> the BBC). The LM379 audio amplifier (which is used in hard disks as a
> servo driver). I don't want other chips to be hard to find unnecessarily...
I would like to see a list of chips that are in short supply. I have kept many
that I wondered if there was a market.
When you work with a scrapper you go through tons and tons of circuit cards.
It is hard to tell what is valuable and what should be saved. Argueing to save
the gold chips is impossible. Almost of the chips go to scrap, gold reclaim.
Intel scraps their chips in house. They don't let them get out to the market.
It was hard to get old multibus stuff from them. We ballooned up to 16,000 Sq.
Ft. before we broke up, in good part because of arguments about what to keep
or scrap. It is hard to pay the rent on that kind of space.
>
> >
> > Scrap value of your 8008 is less than 25 cents. At $15 you did very well.
> I
>
> The gold might be worth $0.25 (actually, I doubt it). But what about the
> value to somebody who needs this chip to get an old machine running?
>
> > plan on starting with my gold 8080s and EPROM's, not the most collectable
> > stuff. My main interest is in doing better than scrap value. I agree
these
>
> _My_ main interest is keeping as many classics working as possible. And
> this means keeping spare parts available.
Are you willing to pay for shipping and storage. I can;t afford to anymore.
Paxton
At 06:18 PM 12/13/98 -0600, Doug Yowza wrote:
>
>You mean you're going after the jewelry crowd? That should be
>interesting. If I start seeing old women with big hair wearing 4004's
>around their neck, I'll be happy being able to say "I knew Paxton when he
>started this trend."
Nope, you gotta start making CPU beanie babies for people to
hang on the side of their monitors. What's the ticket.
"This beanie baby is the chip used in the Altair!" Or maybe
little dancing chips that wiggle when they hear music.
Or collector cards with pictures of chips, particularly
if you can design a game around them involving magic powers.
- John
Boy, will I have to be careful how I phrase things! My initial response was
to Paxton Hoag's public Classiccmp message to me that he had uncovered
another SOL (I had previously purchased one from him many months ago). My
public response was to thank him but decline, instead suggesting that any
other reader of his message or my message might be interested. I then
offered to take it if no one else was interested (can't have a SOL go to the
junkyard after all). Apparently several people are interested, some of whom
have contacted me and some of whom have contacted Paxton. So Paxton has the
SOL - contact him for details.
(Shall we have a private ClassicCmp eBay.com auction and see who will bid
the highest? {{big wicked grin}} We can then replay the messages about
everyone's collecting / buying / selling / bidding / anti-eBay / pro-market
forces / I'd-rather-give-it-a-good-home philosophies. Are we all unanimous
in our support of diverse opinions? - please raise your hands!)
However, as the last North American bastion against creeping planned
obsolescence (i.e., everything Intel has made since the 8080), as an
original SOL owner, and as a current SOL / N* owner, I am happy to share
copies of documentation and software for cost of copying plus shipping (or
trades - be aware that the SOL manual is very large, but if you can do
without the assembly instructions, it's not too bad - it does have good
schematics and a detailed theory of operation). I am still in the midst of
sorting out some recent ProcTech finds, and will keep the ClassicCmp list
updated with what I have uncovered and what is available as I find the time.
(Yes, I did find a Helios and no, I haven't hooked it up yet).
BTW, whoever said that I had "too many SOLs" ...that's an oxymoron in my
book <g> !
Bob Stek
bobstek(a)ix.netcom.com
Saver of Lost SOLs
Hi Sam,
At 10:48 PM 12/13/98 -0800, you wrote:
>I'm looking at the manual for this thing. It was a pretty righteous
>terminal in its day. Maximum transmission rate is 9600 baud. It had a
>video out so you could hook up an external monitor. According to the
>schematic, the biggest chip on the I/O board is a TR1402A or 1602A (it has
>both numbers written on it).
Sounds like a 40 pin DIP UART.
-Dave
On Sun, 13 Dec 1998 18:36:31 EST Innfogra(a)aol.com writes:
>In a message dated 12/13/98 3:05:02 PM Pacific Standard Time,
>yowza(a)yowza.com
>writes:
>
>>
>> The *beggining* of the Internet revolution? You missed it by
>almost 30
>> years :-) (I was just talking to a guy who was there for the
>installation
>> of IMP #1 at UCLA.)
>>
>You are a pioneer. The revolution starts when it is being adopted by
>the
>masses. This is what is happening right now. Ebay is a part of it. The
>iMac is
>a part of it. Mass use of the Internet will change it so that the
>pioneers
>will have trouble recognizing it. The next few years will be
>interesting.
There is a Chinese *curse* that reads:
"May you live in interesting times"
>Paxton
>
___________________________________________________________________
You don't need to buy Internet access to use free Internet e-mail.
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I knew that ;)
I just forgot for a few minutes.
Then I gues I just have mainstream machines. Except for my Dyna Micro but it
is bare of components so I guess it doesn't really count.
Francois
>Francois wrote:
>>
>> How about the exelvision EXL100? is that a single instance on the list?
>> I also have the IR joysticks.
>> Francois
>
>Sorry, I have a couple of those ;-)
>
>_---_--__-_-_----__-_----_-__-__-_-___--_-__--___-__----__--_--__-___-
>Hans B Pufal Comprehensive Computer Catalogue
><mailto:hansp@digiweb.com> <http://digiweb.com/~hansp/ccc>
>
In a message dated 12/13/98 12:57:13 PM Pacific Standard Time, yowza(a)yowza.com
writes:
>
> Your ebay advertising service is great for ebay, and great for sellers,
> but please consider what you do to the poor bidders who already know about
> this stuff and have plans to bid on it.
>
> Advertising an auction is not the same as advertising a Usenet ad, for
> example, in which the advantage goes to those who did their homework and
> legwork earlier than the others. In the auction case, you've simply
> raised the price of the item.
>
The Internet revolution is about making contacts. Marvin is facilitating that.
After reading these comments I immediately went to the listing and looked at
the bidding history. Sure enough, there are at least two of the bidders I
recognize from this list.
When I used to go to auctions I hated to have anyone bid against me. This is a
natural and personal feeling. I was very good at finding sales that few others
went to. It was disappointing when these sales got discovered. However this is
life. Nothing stays the same. I am cultivating new sources. I am also
exploring the new way to buy and sell stuff, Internet auctions.
I don't hold that "spreading the word" is advertising. The Internet is about
community, communication and contacts. It is unfortunate when it impacts you
directly. However this is a revolution and we have to learn to go with the
changes.
It is too bad that Marvin's listing impacted you directly. Marvin was only
informing the community of something of interest. He is being a good
revolutionary. I appreciate that.
On Fri, 11 Dec 1998 18:50:59 -0800 Larry Anderson <foxnhare(a)goldrush.com>
writes:
>In reference to the memory question some VIC/VC REUs went to 24k (like
>the MSD
>one I have here), but there was also the Aprotek RAM
>expander/cartridge
>expander which filled every gap, all the contiguous memory (including
>the 3k
>portion in lower RAM) as well as the upper 8K Game ROM space. 32k? I
>think
>they gave it a bigger number, maybe by adding the 5k and the ROMS to
>the
>'total memory', regardless, the Aprotek one was the ultimate in VIC-20
>expanders...
Another was the Data20 64k VideoPAK. This sucker had it all: 64k of
paged
RAM, 40 or 80 column display, and a built in terminal emulator. Way
cool.
If you purchased yours towards the end of Data-20's life, you got a
spreadsheet and word processor with it. Mine, alas, broke last fall.
It won't display 80 columns. I also lost the software for it. :-(
ANother cool Data-20 product was the Z-80 VideoPAK. This added a Z-80
cpu, and an 80-column display to the C-64. It was supposed to run
CP/M also. I also have one of these as well (thanks Doug!), but no
software. Still looking.
___________________________________________________________________
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At 12:30 PM 12/13/98 -0800, you wrote:
>Interesting item on ebay. I hadn't heard of it but it looks like it is an
>interesting part of early computer history! The URL is:
>http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=47803992
>
>
I do remember seeing ads for it (Edmund scientific?), if I can find what it
cost then, I will post it.
I just checked, the bid is now $76, too much for me. I have actually managed
to buy no computer items yet on ebay, did get within 1 minute on one item.
I would be interested in what the minivac did? There are 6 relays, one pole
maybe used as a latch? I forgot what it takes in relays for a 1 bit adder, a
single relay coil can be an exclusive or, foe example.
My point is that I can still find relays for US$1 each, so building
something like this isn't out of the question. The "speculation" value is
less interesting to me... if I had one, under what circumstances would I
sell it? Besides, a homebrew could be modified/improved without the
speculation factor.
-Dave
> No, I think this comes more from a lack of integrity. He also implied it
> was an S100 emulator. Like I said, this item had nothing to do with
> emulating an S-100 bus, and didn't really have much to do with an Altair
> or IMSAI for that matter either.
Let's see - if you wanted to emulate early S-100 stuff, I guess this'd
be the way that it'd go:
1. Find an ad in the back of a 1975-1978 BYTE magazine for a neat
memory board.
2. Place order for board.
3. Begin assembling board. Supplier gives you low-grade chips; you must
test all 2102's by hand before installing.
4. Plug board into system. Front panel freezes up.
5. Hack around the front panel, changing RC constants in one-shots.
6. Discover you have to cut a couple traces on your CPU board, wire
in some JK Flip-Flops to synchronize the timing to what the memory
board expects.
7. Congratulations! After months of time, and weeks of effort, you now
have enough memory to play Trek under MBASIC!
OK, OK, I'm exaggerating a little bit. By the late 70's there were some
pretty solid S-100 based systems out there, if you were willing to
spend the bucks to get the good stuff (i.e. Godbout/Compupro/Cromemco/usw.)
But if you played it cheap, you got what you paid for!
Tim.
>>Hmm - it looks like they do Phase IV, SET HOST, and FAL, which I think
>>is all you need.
>>
>>It looks like they've only done extensive testing under VMS, so it's
>>possible that some of their tools assume VMS-ism's not present under
>>RSX. But you won't know till you try!
>I've spent a good chunk of the day trying to get this working, and finally
>gave up and spent some time redoing my one VAX so it doesn't have to have
>ALL the disks online when it is used. The end result is as follows:
>
> VAX VMS 6.1 talks to Linux 2.0.34
> Linux 2.0.34 talks to VAX VMS 6.1
>
> VAX VMS 6.1 talks to RSX-11M 4.2
> RSX-11M 4.2 talks to VAX VMS 6.1
>
> Linux DOES NOT talk to RSX
> RSX DOES NOT talk to Linux
Let's back up just a little bit, Zane. If I understand your original
post, you want to use Linux/DECNET to move some files to and from
a RSX system, right? If so, why not just move the RSX disk to the
VMS system, MOUNT it under VMS, use DECNET between the Linux
box and the VAX, and then move the disk back to the PDP-11 when
you're done?
(Note that RSX disks larger than 512 Mbytes may not be mountable
under VMS, due to a divergence between RSX, VMS, and IAS about how
to enlarge the ODS-1 cluster factor. But disks smaller than 512
Mbytes are just plain old ODS-1 filesystems and VMS and RSX agree
about how to talk to these.)
Things are even better if the drive in question is dual ported -
that way you can have it physically attached to the VAX and the
PDP-11 at the same time (very handy for some development).
--
Tim Shoppa Email: shoppa(a)trailing-edge.com
Trailing Edge Technology WWW: http://www.trailing-edge.com/
7328 Bradley Blvd Voice: 301-767-5917
Bethesda, MD, USA 20817 Fax: 301-767-5927
While trying to get to the SOL in the back of the warehouse I came across a
spare Data General card set. It is a 1210 CPU card and an 8K core memory card.
I believe they would work if plugged in. It was a spare board set for a bunch
of systems that we scrapped about 8 years ago.
This is just a two card set in an anti stat box. Written on the box is
"Replacement value $12,000, 1977"
I am open to all offers.
Paxton
In a message dated 12/13/98 4:29:03 PM Pacific Standard Time,
healyzh(a)aracnet.com writes:
> >Where is the list of the top Supercomputers?
>
> Good question, I hit a link from slashdot last week, but didn't bother to
> bookmark it.
www.netlib.org
Kelly
I found this while digging through a surplus store. AT&T external SCSI
drive model DM/300S. It's a white metal box about 11" square and 4" high.
Does anyone know what machine/system it's for or the specs for it? It has
two round co-axial connectors on the back marked "Power" and "Control".
Anyone know what they're for? It has a socket for an AC power cord so the
"Power" connection isn't for powering the drive.
Joe
>Here is the URL for the 'DECnet for Linux' Homepage. I'm in the process
>of getting the latest version installed at this momnet. It looks like
>they've made some serious improvements.
>http://linux.dreamtime.org/decnet/
Hmm - it looks like they do Phase IV, SET HOST, and FAL, which I think
is all you need.
It looks like they've only done extensive testing under VMS, so it's
possible that some of their tools assume VMS-ism's not present under
RSX. But you won't know till you try!
--
Tim Shoppa Email: shoppa(a)trailing-edge.com
Trailing Edge Technology WWW: http://www.trailing-edge.com/
7328 Bradley Blvd Voice: 301-767-5917
Bethesda, MD, USA 20817 Fax: 301-767-5927
I have a few floppies, both 8-inch and 5.25-inch, whose outer sleeves
have been warped or bent due to various reasons over the years.
Although it appears that the inner, flexible media are OK, I am
reluctant to try to read and copy these without taking some sort of
precautions.
When I try to manually rotate the inner media, it is either very
difficult or impossible without doing some harm to the floppy.
(Usually, you can do this manually with only a little effort.) I
worry that putting them into a drive may totally destroy the floppy.
Some of these floppies (especially the 8-inchers) are up to 20 years
old and contain what I now consider to be valuable material. I have
successfully read and copied other floppies of the same vintage (and
probably same origin) as these warped ones with no problems.
So, what do I do? Is it conceivable to open and remove the inner
media from the warped sleeves? Should I just try putting them under
a pile of books to see if the warps decrease? Any ideas or practical
experience with this would be greatly appreciated.
Just for reference, in case the particulars help any, the 8-inch
floppies are single-sided, single-density and were written on a
DEC RX01 or equivalent. Most of the 5.25-inch floppies were written
on an Apple II.
Thanks,
Dave
In a message dated 12/13/98 3:05:02 PM Pacific Standard Time, yowza(a)yowza.com
writes:
>
> The *beggining* of the Internet revolution? You missed it by almost 30
> years :-) (I was just talking to a guy who was there for the installation
> of IMP #1 at UCLA.)
>
You are a pioneer. The revolution starts when it is being adopted by the
masses. This is what is happening right now. Ebay is a part of it. The iMac is
a part of it. Mass use of the Internet will change it so that the pioneers
will have trouble recognizing it. The next few years will be interesting.
Paxton
When you shop ebay you soon realize that to find anything you need to use a
search engine. Search engines use keywords. Finding the right keywords that
will find what you are looking for is difficult. I spend a lot of time going
through completed auctions to try and figure out what keywords people use to
describe their stuff.
The question then becomes "What do I list this as, that will trip the keywords
that people search for?" You end up packing the limited space for the
description with keywords that are only related to the item you are selling.
This is an unfortunate consequence of the Internet revolution, not false
advertising. The Internet revolution is about making contacts. We are making
new modes of how to do this.
I have some gold chips that would be attractive to collectors (8080s, memory,
8008, etc.) but I have yet to figure out what to call them when I list them on
ebay. I am spending considerable time to try and figure out what keywords
people search for. I suspect my listings will be a mishmash of related words
when I get done. When I list these next year I expect to see lots of chuckles
about the prices I hope I am getting.
I find the comments about high prices for collectibles very interesting. Sure
you can find stuff going for hundreds of dollars. However if you search
completed sales you will find that a full range of prices exist. What brings
in top dollar are working machines, with accessories, software, documentation
and original boxes.
If it is non-working, missing parts it often sells at a reasonable price, a
fraction of what the high end machines sell for. Another reason I see is for a
low selling price is a poor choices of keywords. If people can't find
you......
I appreciate the mention of the ebay listings. It helps me with my research
and often provides a few chuckles when I look at what people want for their
stuff.
We are at the beginning of a revolution, I don't think anyone knows where it
will shake out.
Complete ClassicCmp archives related to Altair are now on my website. Also, just added archives from various Usenet newsgroup discussin Altair computer family.
Here is what I currently am working on:
-adding software content
-adding scanned pictures of Altair brochures
-adding scans of advertisements from MITS
-building a virtual museum
If any of you would like to contribute to this effort send me your ideas!
http://altaircomputers.org
>> Interesting item on ebay. I hadn't heard of it but it looks like it is an
>> interesting part of early computer history! The URL is:
>Your ebay advertising service is great for ebay, and great for sellers,
>but please consider what you do to the poor bidders who already know about
>this stuff and have plans to bid on it.
I dunno - I kind of like looking at pictures/descriptions of interesting
items, and folks posting Ebay URL's often (maybe even usually) do a
decent job of finding the "interesting" stuff.
Of course, I also realize that there's no local shortage of interesting
computer hardware free for the hauling, and am damn unlikely to bid
on anything :-).
I didn't think computer-collecting was such a competitive hobby, but some
others evidently feel differently. I see way too many late 60's/
70's minis and micros going through the scrap metal recyclers to think
that there's any shortage of historical stuff to keep me busy.
Tim.
Jay Jaeger <cube(a)msn.fullfeed.com> wrote:
>While I was at the regular weekly UW (Wisconsin) Friday surplus sale
>I noticed a DecSystem 5400 with 2 RA90 disk drives and a
>TK70 tape drive is available out there for $20, including a short rack.
>The system looks very very clean, physically. I have no room for it.
>It is not a MicroVAX, but is instead a RISC system, presumably using a MIPS
>RISC processor.
>The folks over there told me they are having a big sale December 29th, so
>if you want it, you should probably grab it no later than that. They are
>open every Friday AM from 8AM to 2PM, IIRC.
Adam Fritzler <afritz(a)delphid.ml.org>
>Wish I had enough to ship/get such a thing to AZ.... Someone tried to sell
>me one of these locally about 8mo ago for about $800...
>Nice boxes for their time. QBus version of the DECstation line of
>MIPS-based machines.
A 5400 uses a BA213 chassis. The lower portion is a 12 slot Qbus backplane.
The upper section has room to mount a tape drive, and up to three RFxx
series drives. The BA213 can be rack mounted, but mostly found in a stand
alone case measuring around 14x20x27. The case has wheels which, given
the weight of the thing, is nice.
It uses a two board KN210 processor set, slot 1 being the I/O module and
slot 2 being the CPU module. It will take up to four MS650 16Mb memory
cards. The processor runs at 20Mhz. It has an MMJ console connector
and both BNC and AUI Ethernet connectors. It will run Ultrix 3.1B or
later.
The RA90 drives are 1.2Gb.
My point is that someone needs to haul this off. I have already got two
of them, or might think about getting it myself. Actually too far away
and the wrong time of the year. I had a dealer in IL offer me $150 for
one, but I decided it was worth more just to play with.
If someone gets this, I have the 5400 hardware manual and will answer what
questions I can. I also have a manual on the RA90/RA92 and the SA600/SA800
Storage Array (that I suspect the drives are mounted in) that I don't
need.
Mike
>If it's a Univac I, I want it :-)
That's what its labeled. Coleman's Surplus is at 360 Klinger Rd,
Millersburg, PA 17061. Their web site is at <www.colemans.com>. No clue
how much they wanted for it, but getting it out of there is the _real_
problem. Of course, getting it to California might be kind of
challenging as well. :-)
>I really don't know much about the
>history of the Univac, but the same name was used for a bunch of quite
>different machines I think. The first one was the direct descendent of
>the ENIAC, so no, the "Uni" in Univac has nothing to do with Unix, if
>that's what you're thinking.
Yes, that's what I was thinking.
>It sounds like quite a cool graveyard, though.
I felt like quite the computer archaeologist. :-)
Tom Owad
--
Sysop of Caesarville Online
Client software at: <http://home.earthlink.net/~tomowad/>
For anyone who wants a 17-year-old terminal that looks just like
an iMac, I've got a Lear-Siegler ADM5 here that works and I'd like
to give away. Pickup only, in Bethesda MD (just inside the Beltway).
--
Tim Shoppa Email: shoppa(a)trailing-edge.com
Trailing Edge Technology WWW: http://www.trailing-edge.com/
7328 Bradley Blvd Voice: 301-767-5917
Bethesda, MD, USA 20817 Fax: 301-767-5927
>
>Life would be so much easier if I'd ever gotten a floppy drive working on
>my main PDP-11/73.
>
> Zane
What kind of problems are you having getting a floppy working in the 11/73.
If you need an RX50 I have several you can have for the shipping I also have
a few RX33's.
Dan
< How OS specific is DECNET? If I've got a Linux Box speaking DECNET (Yes
< they do that now), can that same box do a 'set host' to a system runnin
< DECNET on RSX-11M? I've used a Linux box to speak to a VAX before and i
< worked quite well. Basically I'm more interested in transfering files t
< the PDP-11 rather than logging into it over the net.
Decnet sethost is similar to TELNET and is not specifically platform
specific. File access maybe as VMS supports 36char filenames and
versioning.
< Oh, and I'm assuming I should get this working, is it possible to write
< tape on RSX-11M that RT-11 can understand. I would assume so, but...
It may be possible but the file system hooks may be subtle in their
interface. I'd ecpect it to work but surprizes are possble.
For me this is a good reason to get into linux.
Allison
Hello, all:
Last night I posted the following to my Web site:
- 10/83 Article from Byte re: Motorola Educational Computing Board
[ Rich Cini/WUGNET
[ ClubWin!/CW7
[ MCP Windows 95/Windows Networking
[ Collector of "classic" computers
[ http://highgate.comm.sfu.ca/~rcini/classiccmp/
[ http://highgate.comm.sfu.ca/~rcini/pdp11/
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