In a message dated 97-05-11 00:09:18 EDT, you write:
<< Yes, I believe it was published by TAD Books although I don't remeber the
exact title, either. It was available at my local library. At the time I
read it, I think I estimated it would cost about $1,000 altogether to
build the computer. It would probably be a lot cheaper today. Seemed
like a very good boook. >>
Z-80 Microcomputer Design Projects, William Barden, Jr. $14.95, Howard Sams.
published in 1980. describes a <10 chip single board computer. how much
was a Z80 in 1980?
KiloBaud Klassroom. by Peter Stark. describes a 6802 single board computer.
seems like mostly reprints from the magazine column of the same name. 1982
The 8085 Cookbook.
Build your own working computer. Tab books. uses the SC/MP.
Build your own advanced computer. Tab books. uses the 9900, i believe.
The Bugbooks.
I can probably dig out several more which describe a single board system.
None
get into things such as disk drives, not that I recall anyway.
Kelly
Hello -
I am looking for an original set of Wordstar 3.31 (running under DOS) disks
with correctstar and mailmerge. I specifically need the printer support for
a HP laserjet printer.
Please email me with particulars, including price.
Thanks.
John Ott
jott(a)saturn.ee.nd.edu
I thought i'd post about a machine which certainly qualifies to be classic,
an ohio scientific challenger C1P of which i know nothing about. i did get
some extensive documentation with it including a presale brochure, some
photocopied machine language programs, the original reciept dated 20jun1980
for $425, some info about a d&n micro card which i also got, instructions for
eprom burner software, basic ref manual, and some highly technical info and
board schematics. i also have several cassette tapes of software including an
original adventure 0 copyright 1979 for a 24k apple and asteroids also.
i also got several boards that i dont know about included. one seems to be a
floppy controller and ram card from d&n micro products, two of them say osi
model 502 and 527 and some others i cannot tell what they are. they all have
circuit traces some missing some sockets and all are mising components so it
seems like its part of a kit. anyone know about this model? it seems to be
apple ][ compatible, but i havent bothered turning it on yet. heh, would be
neat to find a floppy drive for it...
david
On 10-May-97, classiccmp(a)u.washington.edu wrote:
>I had (and still have to some extent) the same problem on my Executive. I
>managed
>to mitigate the problem somewhat by replacing the 12 volt muffin fan with a
>117 volt
>fan in order to reduce the load on the power supply. The shimmering was
>reduced, but
>not eliminated.
Gerald,
Then would you say the power supply is getting weak? It looks like the fan
in the back is a standard enough part...in fact, there's room there for a
larger one, as the one installed isn't even as large as the grill opening.
I'll try that though and see what happens. Thanks for the tip.
Jeff jeffh(a)eleventh.com
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Sent from an Amiga 3000..the computer for the creative mind!
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Collector of classic home computers:
Amiga 1000, Atari 800, 800XL, Mega-ST/2 and XE System, Commodore
C-128D, Plus/4 and VIC-20, IBM 5155, Kaypro 2X, Osbourne Executive
Radofin Aquarius, Sinclair ZX-81, TI-99/4A, Timex-Sinclair 1000,
TRS-80 Color Computer-3 and Model 4, plus Atari Superpong and
2600VCS game consoles.
A week or so ago, I recall seeing a post concerning questions about Kaypro
and thier being called by which name. Unfortunately, I didn't respond to it
as I wanted at the time, and procrastinated so long that now I can't find the
original post!
But to put my 2cents worth in, on my Kaypro 2X, it still states it was
manufactured by Kaypro Corporation, of Solana Beach, CA. Since the company
had yet to change names when the 2X was manufactured, would that indicate that
it fell before the Kaypro II in the production cycle? If I recall, the II was
labeled as coming from Non-Linear Systems?
Jeff jeffh(a)eleventh.com
--
---------------------------------------------------------------------
Sent from an Amiga 3000..the computer for the creative mind!
---------------------------------------------------------------------
Collector of classic home computers:
Amiga 1000, Atari 800, 800XL, Mega-ST/2 and XE System, Commodore
C-128D, Plus/4 and VIC-20, IBM 5155, Kaypro 2X, Osbourne Executive
Radofin Aquarius, Sinclair ZX-81, TI-99/4A, Timex-Sinclair 1000,
TRS-80 Color Computer-3 and Model 4, plus Atari Superpong and
2600VCS game consoles.
Just a quickie....
Have any of you guys ever made your own computers?
This is someting I have been thinking of doing but really don't know where
to start. It doesn't have to be fancy (something with a 8088 or Z80 or
6502 would be fine) So does anyone have any "plans" to make one?
Thanks
Les
At 11:36 AM 5/9/97 +0500, you wrote:
> I have an Osbourne Executive that is in fairly decent shape and for the
>most part works fine. There's no burn-in on the CRT and both floppies work
>great, but there seems to be a problem with the power supply or the video
>system.
>
> The system boots fine, but once it has booted, the image on the screen
>begins to jump or shimmer, and you can hear the fan on the rear of the machine
>appear to change speeds, as if there was a power fluctuation.
>
> I would really like to find out what's wrong with this machine, and repair
>it if possible, and am hesitant to run it the way it is. Any help would be
>greatly appreciated. Thanks.
>
Jeff,
I had (and still have to some extent) the same problem on my Executive. I
managed
to mitigate the problem somewhat by replacing the 12 volt muffin fan with a
117 volt
fan in order to reduce the load on the power supply. The shimmering was
reduced, but
not eliminated.
Gerald
> Jeff jeffh(a)eleventh.com
>--
>---------------------------------------------------------------------
> Sent from an Amiga 3000..the computer for the creative mind!
>---------------------------------------------------------------------
> Collector of classic home computers:
>
> Amiga 1000, Atari 800, 800XL, Mega-ST/2 and XE System, Commodore
> C-128D, Plus/4 and VIC-20, IBM 5155, Kaypro 2X, Osbourne Executive
> Radofin Aquarius, Sinclair ZX-81, TI-99/4A, Timex-Sinclair 1000,
> TRS-80 Color Computer-3 and Model 4, plus Atari Superpong and
> 2600VCS game consoles.
>
>
>
>
>
those are magnetic strips storing programs. you would read the strip in,
then insert it in a special holder below the row of function keys on the
calculator. you could label the strip so you remember what each function
key is programmed for. HP first introduced this with the HP67 (pocket
version) and HP97 (desk version) and TI followed suit with their own
equivalent. This was probably vintage late 70's or early 80's?
- glenn
At 02:00 AM 5/8/97 -0400, you wrote:
>
>Hi, I saw the post on the old calculator so here's mine:
>A buddy of mine used to work at a Salvation Army so I got
>a lot of stuff that they threw out. One was an old TI
>calculator that had these strips you fed in one side and
>a motor pulled them through (almost like a credit card reader)
>
>What is it? How old is it?
>
>Les
>
>
>
>
At 06:57 PM 5/9/97 -0500, you wrote:
>Yes, the incredible rate of obsolesence in computers lets us own
>stuff that only a major company or a small government would've been
>able to buy 10 years ago. For example, list price on the hardware
>in my Personal vaxCluster would've been over half a million dollars
>when new. But I've picked it all up at auctions for a couple hundred
>dollars.
I remember going into the local Radio Shack and drooling over the
different TRS-80 models nearly constantly in the period between 1982 and
1987, seeing as those were the systems which I had easiest access too. I
wanted a Model 4P quite badly at the time, but I didn't make enough with my
job for them to even think about financing me on it. I entered the military
in 1983 so didn't make too much. Also, the Model III was the first micro of
any type I got to use, since it was what our computer lab in high school
(circa 1981-2) used.
>On microcomputer prices, here's some prices from the back of an
>August 1982 BYTE that I just happen to have on my desk here:
>Morrow designs 5 Mbyte hard disk S-100 subsystem $1975
If I remember correctly, didn't IBM originally charge close to $5000
for it's hard disk system for the original PC-XT's?
>Tandon TM100-2 5.25" FH DSDD 360K floppy drive $ 325
The Indus-GT floppy for my Atari 800 was another 5-1/4" drive that
was in the $300-400 price range. Nifty drive though, and I think I have
close to a dozen different DOS's to boot it from.
Jeff jeffh(a)eleventh.com
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Collector of Classic Computers: Amiga 1000, Amiga 3000, Atari 800, Atari
800XL, Atari MegaST-2, Commodore C-128, Commodore Plus/4, Commodore VIC-20,
Kaypro 2X, Mattel Aquarius, Osbourne Executive, Timex-Sinclair 1000, TRS-80
Color Computer 3, TRS-80 Model IV
Plus Atari SuperPong and Atari 2600VCS game consoles
Howdy all,
In our newspaper they have a little item called NO KIDDING. In it
they list little trivia things. A few days ago there was one on
"Now You Know" listing things that are different than history says
(one was that Linbergh was actually the 67th person to fly solo across
the Atlantic). Each daily listing also shows the reference in case
no one believes.
Anyhind in today's list they had "'Why' behind the names"
The reason for certain names of companies/items.
Apple - desire to be before "Atari" in the phone book.
Atari - to look like a Japanese company
Does anyone know if these reasons are true? Sounds funny but then
we really don't know how/why certain names are chosen.
Marc
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