This looks like a great candidate for a well-documented restoration -- I'll
be taking a ton of photographs and will welcome any and all suggestions and
pointers to parts, etc.
From: Christian Fandt[SMTP:firstname.lastname@example.org]
Reply To: classiccmp(a)u.washington.edu
Sent: Monday, February 01, 1999 5:50 PM
To: Discussion re-collecting of classic computers
Subject: Re: 1130 has been claimed
Now Tony, you have the responsibility to completely photograph this
and try to find a correct keyboard and PSU. Some of us will
seeing the photos and comments to learn (or relive!) this
machine. I know I'll keep an eye cocked for the parts to help get
machine restored. And to think this machine was only about 3 or 4
drive from here!
Good luck with it :)
Upon the date 05:35 PM 2/1/99 -0500, Brad Ackerman said something
>Tony Eros was the first to respond (by 90 minutes), and so claims
>computer. Thanks for all the offers -- I really didn't want to see
>Christian: [re your query] The machine has been sitting in an
>is for a while. I imagine the missing parts got Dumpstered(tm)
>Brad Ackerman N1MNB "...faced with the men and women who bring
>bsa3(a)cornell.edu the pork, voters almost always re-elect
>http://skaro.pair.com/ -- _The Economist_, 31 Oct
Christian Fandt, Electronic/Electrical Historian
Jamestown, NY USA cfandt(a)netsync.net
Member of Antique Wireless Association
In a message dated 1/30/99 3:33:03 AM US Eastern Standard Time,
> I vaguely seem to remember that the Plato Courseware also ran, or they had a
> version for, the TI99/4A.
> They were pushing it at schools and the like IIRC.
> My first real computer was a TI....Still got it here somewhere, complete
> with the expansion box and 24k of additional ram, and a 5.25" FDD.
yes, you are correct. I bought a complete unused CDC version of the ti
computer at a radio rally and got about 50 plato courseware titles. it was
indeed made for schools.
I'm going to be putting up my annual exhibit at the local library and I need some
help with my facts so I don't screw anything up.
I have two display cases to work with. One will be tracing the development of
the portable pc, and will include the usual Compaq Sewing Machine, a Compaq
III, and a Compaq LTE286; a Kaypro II, an Osborne, a Mac Portable (non-
backlit), IBM Convertible, and a Tandy M200 and Pocket Computer. (I'm really
trying to get an M100, but all the reporters I know who still use them would
rather have their fingers removed first before they'd give 'em up.......)
Can anyone give me the original release dates and some tech specs on the
200 and the Pocket? The 200 has the parallel printer card, the external floppy
drive, all the books, and several floppies with stuff on them. The Pocket is the
original model, and has software, all the docs, the original boxes, the original
carrying case, RS-232 interface and the neat little color plotter/printer.
Any info, anecdotes, whatever would be greatly appreciated and acknowledged
in the display.
NerdWare -- The History of the PC and the Nerds who brought it to you.
>In a message dated 1/30/99 8:58:55 PM Central Standard Time,
>> I recently picked up about 30 150meg Bernoulli cartridges that have never
>> been opened. According to the chart on the back they should work on the
>hmm, i don't have any new ones, so the chart you are talking about makes
>no sense to me. Can you write to the 150's with the 90M drive? perhaps,
>format the cartridges as 90's? Is that what it means?
I have no clue other than the vague chart on the back. It looks like a 150
drive will read write format with a * for reduced performance a 90 meg cart.
It does not say anything about using 150m media in a 90m drive. This makes
me think the media will fit but will have to be formatted. To be sure I
would contact IOmega.
The only Bernoulli drive I have ever used was a just released 20m (I think)
back on a then new 286.
If you are still interested contact me off list. With the arrangements I
have with the scrapper I got them from to list members I am only looking for
$5.00 ea. plus shipping. If they are to be going into commercial use that
price WILL be higher.
<> The part I haven't figured out is the photodetector. Even those early L
<> players used a phototransistor for the detector.
<Would a selenium cell be fast enough? A CdS photresistor probably wouldn'
<be, I think.
Silicon photodiode predated the transistor. You would need that or
a photo tube to be remotely fastenough as the selenium or CdS is far to
In the early 50s when the tube was king germanium and silicon diodes
were reality and very common in computer and other uses. The problem
is the LASER postdates transistors! The optical light source would have
to be a collminated point source. Memory is easy, delay lines really big
BACK OT... A vacuum tube computer using germanium diodes and tubes in
under 400 of them would eb hard even with a 12bit word. It takes a minimum
of 1/2 a duo triode to make an inverter and a FF needs at least one
dual triode tube and a few diodes for steering. AND and OR gates using
diodes are trivial but a 1 bit full adder would eat several tubes and lots
of diodes. a full function ALU like '181 using tubes would easily eat
about 50-100 of them for 4bits though some logic economies could gotten by
using pulse coupled logic. Register and ALU are the primary consumers of
transistors/ICs/Tubes with gating of signals being a next level user.
On Feb 1, 15:49, Frank McConnell wrote:
> ObCC: so what did you UKans do to get your funny-looking L on
> computers, terminals, and printers imported from ASCII-speaking
It's character 0xA3 (decimal 163, octal 243) in ISO Latin 1, and most
systems that don't have a special key for it map it to the "#" key. On
older systems, quite often the drivers replace the "#" character with the
pound symbol, but some replace the "$".
Pete Peter Turnbull
Dept. of Computer Science
University of York
<Except for a significant penalty in register access time, maybe. Could
<be worth it if you expected lots of context switches.
Access penalty is high as ram in '77 was slow.
<Sounds to me like the 1802. Is there any shared history between them?
<Were the 1802 designers consciously influenced by the TI design, or was
<it derived again from scratch?
Not even close. There is no shared history either as noth evolved from the
larger systems each made. The registers in the 9900 were very general in
use and symetrical in adressing modes. The 1802 the registers were not
general. They were mostly for pointers, stacks, and maybe storage. The 1802
had the ability to use any register as the program counter (via sep and
interrupts). The TI9900 the PC is one of the few hardware registers. The
1802 is a primary accumulator machine and the 9900 is anything but as all
registers are the target for the result.
<Hmm, 1802's were used in satellites, right? Do satellite apps need lots
<of context switching?
They would like that but the 1802 was used as it was available as
RAD hard and CMOS (low power!). The latter is more important as 10mW is
nothing compared the the ~600mW of the 9900 cpu never minding clock
generation (ttl 4 phase clock generator) support.
I have recently joined the list, not yet contributed too much, but enjoyed
reading quite a bit.
My personal preference is older stuff - if it contains integrated circuits,
I am not too much interested (with the possible exception of a Cray-1).
I did not succeed in finding any serious equipment in vacuum-tube technology.
Therefore, I decided to design and build a complete computer with
vacuum-tube technology from scratch. A short description of the project is
for those of you who might be interested. The attachment is best viewed with
some straight ASCII editor, like the MS-Editor.
Thanks to Hans Franke for a reading of a draft version and constructive
BTW, I am located in Munich, Germany.
John G. Zabolitzky
On Fri, 29 Jan 1999, Sam Ismail <dastar(a)ncal.verio.com> wrote:
] On Fri, 29 Jan 1999, Derek Peschel wrote:
] > I wonder if I can change the configuration so that only subscribed people
] > can send things to the list? Is that really a good idea?
] Yes and no.
] Yes because it would eliminate the riff raff postings we get every now and
] then (pet peeve).
] No because its really convenient for me to forward messages I get on a
] different e-mail account (which is not subscribed) from people wanting to
] give away or sell vintage computers. It would be a big pain in the ass if
] I had to first forward the message to my dastar account and then forward
] it from there to ClassicCmp.
You could subscribe from that address, and then tell the list processor
to postpone sending you anything there, and never cancel the postpone
order. I *think* you could still post from that address. Of course,
the list processor may eventually explode, holding back all that postponed
mail... (Would it actually hold copies of all that, or just drop it?)
] 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: 01/15/99]
Is anyone on the List, in the Southern California area, interested in a
CDC 9766 350MP top loader, with three disk packs? This unit was attached
to the Prime system I got recently, but is *not* going to be used with
the way I have the Prime configured.
I have gotten an offer of $100, but I have to deliver the damn thing,
and it's 600lbs.
I would like to sell this unit for a little more than $100, or I would
consider donating it to a worthy situation, ie. needed for a systems
restoration, or to supply parts made of Unobtanium.
Replies by e-mail....