On 13-Apr-97, classiccmp(a)u.washington.edu wrote:
>Quite apart from the fact that the machine should be kept original. After
>all, it's one of the few portables for which a real techref is
>available...
And that's exactly what I intend to do with it.
Jeff jeffh(a)eleventh.com
--
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Sent from an Amiga 3000..the computer for the creative mind!
---------------------------------------------------------------------
Collector of classic home computers:
Amiga 1000, Atari 800, Atari 800XL, Atari Mega-ST/2, Commodore
C-128 & C128D, Commodore Plus/4, Commodore VIC-20, IBM 5155,
Kayro 2X, Osbourne Executive, Radofin Aquarius, Sinclair ZX-81,
TI-99/4A, Timex-Sinclair 1000, TRS-80 Color Computer-3, and a
TRS-80 Model 4. Plus Atari Superpong and 2600VCS game consoles.
On 11-Apr-97, classiccmp(a)u.washington.edu wrote:
>I remember demonstrating my Tandy CoCo-3 in 1988 to some PC-goon or
>other. He had a 386 PC running MS-DOS. I had a 2 mHz 6809 running OS-9. He
>was totally amazed that 'that little video game' could have several
>programs running at once, displaying their output in different windows
>(something his PC didn't do at that time), and that I could even log on to
>my machine from a remote terminal.
I still want to find a disk system for my CoCo-3 so that I can run OS-9 on
it. OS-9 is still amazing to this day, which is why any number of companies
use it for the base OS for cutting edge stuff such as set-top boxes for the
TV. Until I saw it, I would've never thought you could put a Unix-like OS
witch was multitasking and multiuser on a 128k 8bit machine! I've heard
mention of there being a version that runs on the Commodore 128 as well, but
haven't been able to find anything out about it.
>I don't play computer games that much, but IMHO the games from 10-15 years
>ago are much more fun than the modern ones. OK, so now we have 3D rendered
>graphics, real sound effects, but no 'plot' - nothing to do except blast
>everything in sight. I personally prefer a good text-only adventure with
>some logic behind it, and no sound.
I agree. The excitement just isn't there, even though the technology is
years ahead in graphics and sound. About the only game I've enjoyed recently
was a 3d bitmapped update of 'Asteroids' on the Mac, which I play on my Amiga
3000 under emulation. I'm also a big fan of INFOCOM's text adventure games,
as well as the Basic 'Star Trek' game that seems to have been ported to nearly
every platform known. I have a number of original disks for my Atari and
Commodore's that have the INFOCOM games on them.
Jeff jeffh(a)eleventh.com
--
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// Amiga: Today's Technology Ten Years Ago
// -------------------------------------------------------
\// True 32bit pre-emptive multitasking GUI, plug&play hardware,
\/ stereo sound, and 4096 color video modes since day #1
---------------------------------------------------------------------
Collector of classic home computers:
Amiga 1000, Atari 800, Atari 800XL, Atari Mega-ST/2, Commodore
C-128 & C128D, Commodore Plus/4, Commodore VIC-20, Kaypro 2X,
Mattel Aquarius, Osbourne Executive, Sinclair ZX-81, TI-99/4A,
Timex-Sinclair 1000, TRS-80 Color Computer-3, and a TRS-80 Model 4.
Plus Atari SuperPong and Atari 2600VCS game consoles.
Well I went out yet again today and found a really nice IBM 5155 Portable
PC at the local Salvation Army thrift store. I picked it up and brought it
home, and it works like a champ! The only DOS I had for it though was either
CoronaDOS 1.25 or 2.11, and both booted fine on it, though I can't get either
CP/M-86 or Concurrent CP/M to boot on it. This is an interesting machine
considering it has the full 8 expansion slots in the rear! I think it will
make a nice addition to the Osbourne and Kaypro portables I already have,
though I hadn't planned on adding a PC to the collection at all. Now all I
have to do to round out the portables is find a Commodore SX-64 some day for a
good price. BTW, the IBM has a whopping 256k of RAM.
Jeff jeffh(a)eleventh.com
--
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// Amiga: Today's Technology Ten Years Ago
// -------------------------------------------------------
\// True 32bit pre-emptive multitasking GUI, plug&play hardware,
\/ stereo sound, and 4096 color video modes since day #1
---------------------------------------------------------------------
Collector of classic home computers:
Amiga 1000, Atari 800, Atari 800XL, Atari Mega-ST/2, Commodore
C-128 & C128D, Commodore Plus/4, Commodore VIC-20, Kaypro 2X,
Mattel Aquarius, Osbourne Executive, Sinclair ZX-81, TI-99/4A,
Timex-Sinclair 1000, TRS-80 Color Computer-3, and a TRS-80 Model 4.
Plus Atari SuperPong and Atari 2600VCS game consoles.
On Tue, 8 Apr 1997, Mr. Paul E Coad spake thusly unto us:
> This raises the question of how people got into this hobby. Was it
> a single event or something which happened over time (with or without
> you being aware of it?)
Well, I'm not sure whether there was a single event that got me
started (other than an offer of my original Nova 1210), but I can
honestly state that there was an event that made me get serious about
the preservation of older machines.
That event was my missing the acquisition of a PDP-15 by about a
half-hour in 1987. I had expressed an interest in the machine, and was
told that it was going to scrap _very soon_, so I should grab what I
wanted. I was going to try and make arrangements to get the machine
picked up (it was fully configured and quite large) and get the machine
home. I arrived (hurriedly) to do an initial disassembly and triage
on the system, only to find that the bone man had come earler in the
hour, and all that was left of the system was an empty space where it
once was. I knew then that -15s weren't very common, and when I realised
that the count had just dropped by one, I was fairly beside myself.
Other than that anecdote, I've been collecting for about 10 years
or so; my stash is fairly well focussed on minicomputers, although I
do have the odd micro here and there. Minicomputers are where I desire
to keep my energies, especially those of DG manufacture. With DG, at
its' peak, being only 1/5 the size of DEC those machines are pretty
hard to come by nowadays. Any leads, of course, would be vastly
appreciated. :-)
While I'm greatly pleased that folks are preserving microcomputers,
I've never felt a "bond" to that particular realm of design. I like
things like time-states, core memory, and pulse-logic. I guess that
makes me an "old fart".
______________________________________________________________________
| | |
| Carl Richard Friend (UNIX Sysadmin) | West Boylston |
| Minicomputer Collector / Enthusiast | Massachusetts, USA |
| mailto:carl.friend@stoneweb.com | |
| http://www.ultranet.com/~engelbrt/carl/museum | ICBM: N42:22 W71:47 |
|________________________________________________|_____________________|
| From: A.R. Duell[SMTP:ard12@eng.cam.ac.uk]
| I wonder how many others on this list don't even own a non-classic
| computer?
Depends on how you define "computer". Even my surround sound processor
has a 80 MHz 40 MIPS 24-bit DSP with more than 64K of RAM on-chip. Most
of our cars have sophisticated engine management computers.
I mentioned to my wife the other day that my Pentium Pro has more
transistors (5.5M) than the entire rest of my antique machine collection
and other household items put together, _including_ her Pentium machine
(3.1M).
Even subtracting the Pentium chip, the Pro still has enough transistors
to make about 83 PC-XT's and who knows how many Altairs.
On the other hand, we all still have a bunch of Z80's even if we don't
collect classics. Zilog has a huge family of Z80 processors for IR
remotes, keyboard controllers, IDE hard drives, PCMCIA,
televisions/cable boxes, voice memo units, serial ports, etc. I
wouldn't be surprised if the average American owned half a dozen Z80's.
Kai
Speaking of getting started, my next door neighbor who is retired and in
his sixties and I were talking the other day, and I mentioned that I would
kill to be retired. He asked me just what I would do with my time. I
mentioned that I would probably spend every waking moment on my atari
writing programs. He looked interested and wanted to go take a look. He
has never owned a computer, and can't afford an expensive pc, and what I
showed him on my atari just blew him away. He now wants to buy an atari and
get started in the world of computers. I am now on the active alert for an
atari system for him. It's neat to see someone that hasn't ever owned a
computer get interested especially on one of the older computers. He was
even happy about the fact that you could connect it to a tv, and not have to
shell out hundreds of dollars for a monitor that you can't use on anything
but the computer. I think these classic computers are great to learn on and
now they can be picked up for a very reasonable price. Of course, I miss
being able to go down to the local store and pick up what I needed, but
there are things still out there, it just takes a little longer to find.
I got started when I went to visit my uncle in california in 1981 or
82. He had an atari 800, and after playing a few games, I asked him how you
make a game. He pulled a sheet of paper out of the basic manual, and told
me to type this in exactly as it is printed. I did, and two hours later, I
had an american flag on the screen. I couldn't decide whether you just type
and type and whatever comes up, you just enjoy it, or if these people
actually knew what they were doing. Before I had even received my atari, I
had magazines laying around, and had just about figured out how to program
before I had even gotten the machine. I bet I really pissed off that u.p.s.
guy stopping him every day asking if I had a package. That started my
career in computers, and now I program for a living. I still own my atari,
and use it often. I didn't start as a classic collector, I started as a
classic user, but through time I have ended up as a classic collector.
If anyone comes across an atari, or atari equipment that they don't
want, I will be more than happy to give it a good working home. To me it
feels like stepping into a time machine and rolling back the clock to my
high school years to be able to sit down and use my old machines. Of
course, back then I didn't have any bills, and had 3 months off in the
summer. Maybe that's why I keep using my atari.
Isaac Davis : Doing the bull dance.
idavis(a)comland.com : Feeling the flow.
indavis(a)juno.com : Working it. Working it.
On 11-Apr-97, classiccmp(a)u.washington.edu wrote:
>I assume you realise that a CoCo2 disk drive + controller will work.
>That's what I currently use.
Actually, it's just that I've not run across the drive and/or controller
yet. I recall seeing the items years ago on the clearance shelf of a local
Radio Shack, and could kick myself for not picking them up...then again, I
didn't have a CoCo at that point either. It brings to mind that I saw a whole
bunch of TRS-80 bus mice for the Model 2000 at the military exchange in
Guantanamo Bay, Cuba about 1990 or so...long after they became hard to find
here in the U.S. I had just gotten rid of my Model 2000, so didn't bother
picking any of them up either.
Jeff jeffh(a)eleventh.com
--
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// Amiga: Today's Technology Ten Years Ago
// -------------------------------------------------------
\// True 32bit pre-emptive multitasking GUI, plug&play hardware,
\/ stereo sound, and 4096 color video modes since day #1
---------------------------------------------------------------------
Collector of classic home computers:
Amiga 1000, Atari 800, Atari 800XL, Atari Mega-ST/2, Commodore
C-128 & C128D, Commodore Plus/4, Commodore VIC-20, Kaypro 2X,
Mattel Aquarius, Osbourne Executive, Sinclair ZX-81, TI-99/4A,
Timex-Sinclair 1000, TRS-80 Color Computer-3, and a TRS-80 Model 4.
Plus Atari SuperPong and Atari 2600VCS game consoles.
On 12-Apr-97, classiccmp(a)u.washington.edu wrote:
>Hmmm. Y'know, if that portable really is built up from a standard PC
>motherboard with the video connector in a card slot, you could (if you wanted
>to) change the motherboard for a newer one and have all kinds of fun.
The biggest hurdles would be the 8-3/8" CRT (measured bezel-bezel) and the
power supply inside. If one wanted to upgrade the CRT as well, you'd have a
hard time finding a modern one to fit, or you'd have to go with an expenisve
LCD, which would destroy the appearance that it was still the orginal machine.
Also, given that most XT-clones tended to ship with 135-150W power supplies,
and the early IBM's shipped with even less, you'd have a hard time running a
newer board on one. I tried a few years ago with a 386DX-40, and it didn't
like it at all!
>Yeah, I know this is a collecter's item probably, but with PCs upgrading is
>my first instinct. I don't even want to talk about how much that's cost me
>over the years.
Your idea isn't any worse than turning the orginal Mac's into aquariums,
which seems to have a bit of a following! At least you're talking of keeping
it a useful computer. I know the feeling about the upgrade-mania
though...it's one of the things that turned me away from the PC, though I have
two now, including the portable.
Jeff Jeffh(a)eleventh.com
--
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// Amiga: Today's Technology Ten Years Ago
// -------------------------------------------------------
\// True 32bit pre-emptive multitasking GUI, plug&play hardware,
\/ stereo sound, and 4096 color video modes since day #1
---------------------------------------------------------------------
Collector of classic home computers:
Amiga 1000, Atari 800, Atari 800XL, Atari Mega-ST/2, Commodore
C-128 & C128D, Commodore Plus/4, Commodore VIC-20, Kaypro 2X,
Mattel Aquarius, Osbourne Executive, Sinclair ZX-81, TI-99/4A,
Timex-Sinclair 1000, TRS-80 Color Computer-3, and a TRS-80 Model 4.
Plus Atari SuperPong and Atari 2600VCS game consoles.
On 11-Apr-97, classiccmp(a)u.washington.edu wrote:
>The Full-screen editor & other stuff were in 10K Rom, with the Basic in
>another 8K Rom, totalling 18K.
I wasn't aware that the editor for Basic was in the OS Rom...I stand
corrected. Still, to think that the game cartridges either were confined to
the 8k space or they somehow bankswitched to allow larger programs, I find
interesting.
>Of course, there were 3rd party upgrade boards that would up the memory to
>256K to be used as a Ram drive or as a printer buffer... How many people
>you know nowadays who are hacking their 486/Pentium machines to be able to
>use over 5x more memory than it's supposed to???
A friend of mine had his Atari 800 upgraded to 128k I believe. It required
a bit of soldering on his part to incorporate the bankswitching scheme the
manufacturer used. He also had a 'Happy' chip and any number of other things
added to it as well, having bought the machine new in the early 80's and
continued to use it for quite a few years.
Jeff jeffh(a)eleventh.com
--
---------------------------------------------------------------------
// Amiga: Today's Technology Ten Years Ago
// -------------------------------------------------------
\// True 32bit pre-emptive multitasking GUI, plug&play hardware,
\/ stereo sound, and 4096 color video modes since day #1
---------------------------------------------------------------------
Collector of classic home computers:
Amiga 1000, Atari 800, Atari 800XL, Atari Mega-ST/2, Commodore
C-128 & C128D, Commodore Plus/4, Commodore VIC-20, Kaypro 2X,
Mattel Aquarius, Osbourne Executive, Sinclair ZX-81, TI-99/4A,
Timex-Sinclair 1000, TRS-80 Color Computer-3, and a TRS-80 Model 4.
Plus Atari SuperPong and Atari 2600VCS game consoles.
Help! I was promised an Osborne Executive a couple of weeks ago and was
getting psyched up to get it for nothing other than the shipping costs,
then at the last minute the guy said his wife wanted him to keep it.
Anyone else have an Osborne they can part with? I have never owned one
and would love to get it and pamper it. Any model will do, just would
like it to be in good working order and in good physical shape. Any
diskettes would be appreciated also.
Thanks!!
Jeff R. in Texas
rottman(a)juno.com
On 11-Apr-97, classiccmp(a)u.washington.edu wrote:
>When I look at the software (and hardware) of 10-15 years ago, I realise
>how far _down_ we've gone since then.
Very well put Jim! I know my Amiga 3000, which is my everyday system,
doesn't fit into the realm of this group (being roughly 6 years old), but it
is far superior to modern systems when it comes to usability and efficiency.
That is one of the reasons I appreciate the early micros so much....it's
amazing what was done by programmers and such in such tight constraints. Take
for example the Atari 800...this is a 2mhz 6502 cpu with 48k RAM and a full
Basic, with full-screen editing, in an 8k ROM. This system amazes me at the
animations and such I've seen on it at times. It's version of Frogger is
great, and I typed in a Basic program from 'Compute!' that displayed the Atari
logo with 128 colors onscreen at once. I think modern day systems could still
learn quite a few things from the earlier ones.
Jeff jeffh(a)eleventh.com
--
---------------------------------------------------------------------
// Amiga: Today's Technology Ten Years Ago
// -------------------------------------------------------
\// True 32bit pre-emptive multitasking GUI, plug&play hardware,
\/ stereo sound, and 4096 color video modes since day #1
---------------------------------------------------------------------
Collector of classic home computers:
Amiga 1000, Atari 800, Atari 800XL, Atari Mega-ST/2, Commodore
C-128 & C128D, Commodore Plus/4, Commodore VIC-20, Kaypro 2X,
Mattel Aquarius, Osbourne Executive, Sinclair ZX-81, TI-99/4A,
Timex-Sinclair 1000, TRS-80 Color Computer-3, and a TRS-80 Model 4.
Plus Atari SuperPong and Atari 2600VCS game consoles.
Our local Goodwill has an old Bernoulli drive. Looks like a dual drive
that takes two 10 meg disk (or was it 5 meg?) cartridges that are about
10" square. Includes 1 disk. Anyway if this sounds interesting to
someone, I could snag it and ship it for cost. (probably $5 + shipping)
Greg
Several weeks ago, through a contact made here, I offered my Xerox 16/8
system to a fellow Canadian who lives in Saskatoon, and to whom I had
previously shipped a set of manuals for the TRS 80 Model 16. I never heard
if they arrived. And I can't get a reply to an e-mail from him so I'm
assuming he's incommunicado or uninterested.
So - I'm going to follow the suggestion made by our worthy founder and offer
it here.
I wish to dispose of my Xerox 16/8 system which is just sitting idle packed
away in it's original cartons. I'm not interested in selling the system.
It's free to whoever wants to pay the shipping charges. Can't beat the
price. But it's take the lot or take nothing!
It comprises:-
Xerox 16/8 Professional Computer system:-
1 Display Unit.
1 Rigid Drive + 5.25" Floppy Disk Expansion Module.
1 Keyboard and Mouse.
2 Shoe boxes full of 5.25" 360k diskettes, some original, some
copies, about 200 or so disks altogether.
Manuals, All in original covers and in excellent condition.
1 Operating System Reference Guide.
1 Technical Reference Manual
1 CP/M 80 & CP/M 86 Operating Systems Programmer's Information Manual.
1 Operations Manual.
1 MS-DOS Operating System Programmer's Reference Manual.
1 Business Graphics Reference Guide.
1 MS-DOS Operating System Reference Guide including:
1 - User's Guide &
1 - Macro Assembler Manual.
1 CP/M 80 & CP/M 86 Operating Systems Handbook.
1 MS-DOS Operating System Handbook.
1 Business Graphics Handbook.
1 dBase II Manual.
When I received the system from my vendor, last summer, I assembled it and
it worked beautifully. But I needed the space in my computer room for my
heavily upgraded Coleco-Adam which was my first computer. So the Xerox had
to be stored away and I'm concerned it may be deteriorating in my unheated loft.
So, either the Xerox continues sitting up in the loft, or someone wants it.
The problem is I live on Vancouver Island which means that shipping these 4
heavy cartons, 3 for the computer and 1 for the books and disks, could be
expensive. Even by bus. That's how they came to me from Vancouver.
I weighed each of the four packages that comprise the Xerox and it worked
out like this:-
Expansion Module (hard and floppy drives) weighs just under 35 lbs. I called
it 35#
Display unit weighs just under 35 lbs. I called it 35#.
Keyboard and Mouse weigh just under 10 lbs. I called it 10#
And the books and disks weigh just under 40 lbs. I called it 40#.
I also have a Kaypro Technical Manual covering the Kaypro 2, 2/4, 10. 2/84,
2X, 4/84, and ROBIE systems that I don't need.
Anyone interested can let me know by e-mail.
Cheers.
David Cobley.
Fidonet on the ADAM, CP/M Tech
and Hewlett-Packard Echoes.
Internet-dcobley(a)island.net, or,
davidc(a)macn.bc.ca
I can't believe you have Nova 1200's. I used a 1220 in the late 70's in
high school and it was old then.
Ours actually had a hard drive which was about 36" on a side, covered
with woodgrain vinyl, with a capacity of a MEGABYTE!!
I might still have the source to my Nova multiuser Star Trek around
someplace. It was so popular it got banned from the system since it
slowed everything down too much.
Kai
> ----------
> From: carl.friend@stoneweb.com[SMTP:carl.friend@stoneweb.com]
> Sent: Tuesday, April 08, 1997 6:02 AM
> To: Discussion re-collecting of classic computers
> Subject: Wanted Systems
>
> I've seen a certain amount of conversation as to the
> appropriateness
> of "For Sale" messages on the list. So long as it doesn't get out of
> hand, some of the posts can be quite useful (like the one on IMSAI
> switches, for instance). How about "Wanted Systems" posts?
>
> I'm looking to flesh out my collection of 16-bit Data General
> hardware, and am looking for leads to systems, or systems themselves.
> Anything in the Nova/Eclipse line is fair game, with the exception
> of the 32-bit MV series (although I hope somebody is preserving
> them!).
> Any documentation is, of course, more than welcome.
>
> Thanks!
>
> --
>
>
> ______________________________________________________________________
> | |
> |
> | Carl Richard Friend (UNIX Sysadmin) | West Boylston
> |
> | Minicomputer Collector / Enthusiast | Massachusetts, USA
> |
> | mailto:carl.friend@stoneweb.com |
> |
> | http://www.ultranet.com/~engelbrt/carl/museum/ | ICBM: N42:21 W71:46
> |
> |________________________________________________|____________________
> _|
>
At 11:11 PM 4/7/97 -0500, you wrote:
>
>Maybe <snif> we <snif> should<snif>n't <snif> allow <snif> posts like
>this!!!! BAWWWWWWWWWW BAWWWWWWWW BAAWWWBAWWWWBAWWWWWW
>
>I could NEVER afford the shipping. I could probably DRIVE there and
>PICK IT UP but not until summer BAWWWBAWWWWW
Tell you what, if I ever get another one, I'll save it until Summer and you
can drive from wherever you are and pick it up. Deal?
Cheers,
David Cobley.
Fidonet on the ADAM, CP/M Tech
and Hewlett-Packard Echoes.
Internet-dcobley(a)island.net, or,
davidc(a)macn.bc.ca
I've seen a certain amount of conversation as to the appropriateness
of "For Sale" messages on the list. So long as it doesn't get out of
hand, some of the posts can be quite useful (like the one on IMSAI
switches, for instance). How about "Wanted Systems" posts?
I'm looking to flesh out my collection of 16-bit Data General
hardware, and am looking for leads to systems, or systems themselves.
Anything in the Nova/Eclipse line is fair game, with the exception
of the 32-bit MV series (although I hope somebody is preserving them!).
Any documentation is, of course, more than welcome.
Thanks!
--
______________________________________________________________________
| | |
| Carl Richard Friend (UNIX Sysadmin) | West Boylston |
| Minicomputer Collector / Enthusiast | Massachusetts, USA |
| mailto:carl.friend@stoneweb.com | |
| http://www.ultranet.com/~engelbrt/carl/museum/ | ICBM: N42:21 W71:46 |
|________________________________________________|_____________________|
Ok, I admit it. You really *can* find more stuff these few weeks. I went
to car boot sale today and got three machines (five, were I willing to shell
out for two C64Cs with a floppy drive and a PSU between them).
I'm not the proud owner of a Spectrum 48k (at last!) in mint condition and
a Spectrum +2A in even better shape. I actually got the +2A at half the
price of the 48k -- 5 pounds for the +2A (around $7? Not sure) as opposed to
10 pounds for the 48k. There was another +2A for sale at the outrageous
price of 15 pounds (at least I *hope* I heard 15 -- at that noise level, it
could have been -gasp- 50).
Anyway, enough about the Spectra (sic). :-)
There's another find I might need a little help with. It's not strictly a
computer, it's a video game (Video Entertainment System, as it says on the
front panel). Specifically, an Acetronic MPU-1000. The PCB has a Radofin
label on it. There are two analog joysticks with two red fire buttons and a
12 button keypad each. They're connected to the unit with spiral cable (no
plugs). The controllers are designed to take overlays to give meaning to the
12 unmarked keys. I don't have any overlays, but there are four carts:
Invaders, cart #1 (Olympics -- actually a more or less standard set of
Pong-like games), cart #11 (Super Maze -- remember A-Maze-ing on the TI? It's
very similar. Analogue control of the players is quite tricky), and cart #13
(Circus -- I haven't figured this one out yet due to the erratic behaviour
of one of the controllers [read: vertical axis doesn't work properly, fire
button won't]). The cartridges claim to be "suitable for Acetronic, Radofin
1292 & Prinztronic microprocessor systems".
Does anyone have any ideas about this? Is it common or uncommon? The name
Radofin was familiar, after a bit of research it turns out it's the company
that bought the rights to the Aquarius. Any technical information would be
welcome, since I can't identify either of the LSI ICs on the PCB (yes, two
of them).
Oh, by the way, in the highly unlikely case this is amazingly rare and the
only one left on the planet (unlikely because at least another person on the
WWW has one, albeit an MPU-2000), I obtained this at the silly price of 2
UK pounds. The previous owners seemed a bit amazed at the fact that someone
might actually be *INTERESTED* in that piece of junk. Can't complain,
really. :-)
Thanks,
Alexios
--------------------------- ,o88,o888o,,o888o. -------------------------------
Alexios Chouchoulas '88 ,88' ,88' alexios(a)vennea.demon.co.uk
The Unpronouncable One ,o88oooo88ooooo88oo, axc(a)dcs.ed.ac.uk
At 06:01 PM 3/31/97 -0800, you wrote:
>
>I was talking to a friend this weekend who brought
>up this idea that before long EPROMs in our old
>computers are going to start to go bad. This is
>something I've heard before but, to be honest, I
>don't know enough to make a judgement on it. If
>this is the case, I suppose I should be burning
>backups.
>
>While I'm at it... What are some other concerns
>along these lines. What should we be planning
>for as these machines grow 5, 10, 15 years older?
Good questions all, so some comments and some thoughts.
EPROMS: yes, they will forget. Being stored charge devices they will
eventually start to lose the stored information. As I recall the original
estimated life for stored data was 10-15 years. Punched tape (mylar
preferably or paper if stored properly) may be the closest thing we have to
a true "archival" medium.
Electrolytic Capacitors: They dry out, or will start to ooze the
electrolyte. (I address this to some extent on the 'Repair Tips & Tricks'
section on my web pages) Average lifetime (of large caps such as found in
power supplies) is probably 5-10 years. On machines that I restore they
are (almost) always replaced before I do anything else. The very small
caps found on logic boards for timing and similar circuits do not seem to
be a prone to failure.
Disks: depends highly on how they are stored. Should be treated similar
to records. (remember those?) Store upright, loosely packed, dry but cool.
Watch for oxide flaking on very old disks.
Tapes: similar to disks for storage. Should be retensioned (repacked?)
>from time to time. (fast forward to end, then rewind) As with disks,
watch for oxide flaking. Dampness will cause some tapes to adhere to
itself, and strip off the oxide when run. Had this happen to my "Standard
Pack" tape for an HP-85 I obtained recently. Went to load the tape and got
a read error. Manual inspection of the tape showed a 3/4 inch strip where
there was no oxide at all. it was stripped away by the tape adhesion when
I rewound the tape for probably the first time in 4-5 years!
Card edge connectors: corrosion is common, expecially is stored in damp
places or contaminated by skin oils. Can be cleaned with the classic "Pink
Pearl" eraser. (Don't use the grey erasers - too abrasive!)
Hmmm... probably more, but it's late and I forget... (often it seems - bad
EPROM?)
More later...
-jim
---
jimw(a)agora.rdrop.com
The Computer Garage - http://www.rdrop.com/~jimw
Computer Garage Fax - (503) 646-0174
On 07-Apr-97, classiccmp(a)u.washington.edu wrote:
>I picked up an Atari 1040ST today for $25 -- as is. No cables, no manuals,
>no floppy disks, nothing. I figured I'd be able to build up a little
>working system (if the thing still works), but need some help.
>If anyone here knows of any resources for floppy disks, manuals (i.e. how
>do I plug this thing in?), etc. please let me know -- I'd like to put this
>computer to use in my studio -- it has MIDI In/Out, and there's some cool
>software for it and one of my synthesizers that I've been meaning to check
>out.
The 1040ST is a nice system, but you'll need to find one of the Atari
monitors for it, such as the SM-124 (very nice mono) or the SC-1224 (color).
You don't need an OS disks for it, as the OS is built into ROM, and it uses
standard PC 720k disks. For software and such, Toad Computers in Severna, MD
is a good resource..and they even sell TOS upgrades and refurb monitors.
Atari's have been their specialty for years. Hope this helps.
Jeff jeffh(a)eleventh.com
--
---------------------------------------------------------------------
// Amiga: Today's Technology Ten Years Ago
// -------------------------------------------------------
\// True 32bit pre-emptive multitasking GUI, plug&play hardware,
\/ stereo sound, and 4096 color video modes since day #1
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Collector of classic home computers:
Amiga 1000, Atari 800, Atari 800XL, Atari Mega-ST/2, Commodore
C-128 & C128D, Commodore Plus/4, Commodore VIC-20, Kaypro 2X,
Mattel Aquarius, Osbourne Executive, Sinclair ZX-81, TI-99/4A,
Timex-Sinclair 1000, TRS-80 Color Computer-3, and a TRS-80 Model 4.
Plus Atari SuperPong and Atari 2600VCS game consoles.
>> Btw, is it true that you can't format disks on the Rainbow and need DEC
>> preformatted ones instead?
Actually, if you have CPM-86, you can format regular 5 1/4 floppies into RX50
floppies. The MSDOS version of the software was hindered so that it couldn't
be done.
/Bill
bm_pete(a)ix.netcom.com (Barry Peterson) wrote:
> <snip>
>
> >Ahem... If you were really interested in offering these systems to =
> someone.....<snip...Snip>
>
> I had assumed that for sale ads were forbidden/discouraged here.
I was under the impression that it was ok as long as it's not excessive. I even
mentioned it in my introduction message and have seen it discussed a couple times.
I believe this was my first post of this type.
I don't want to make any enemies here.
Sorry for any inconvenience.
Greg
Hello,
Jim Willing <jimw(a)agora.rdrop.com> wrote:
>>I just listed a few different systems on auctionweb. This is a great
>>place to look for stuff. Included is an Apple III, hard to find. I also
>>have some old video game systems listed. Check them out at the links
>>below:
<<< listing omitted to save space... >>>
Thanks Jim
> (hoping that this does not come off sounding too rude... ((I'm going
> to develop a reputation))
It doesn't (I don't think). I feel the same way sometimes.
> Ahem... If you were really interested in offering these systems to someone
> who might appreciate them, why not list them HERE with an asking price first
> and then move to AuctionWeb (or similar) if they did not sell or you could
> not get your price.
Here's my situation:
I enjoy searching for these old computers. Sometimes even more than toying with
them. I spend a lot of time digging and driving and hauling and testing but I
love it. I have saved quite a few from the landfill. If you watch the auction
you will see that the items there do not necessarily sell for more than their
value. In most cases, I don't even know what to ask and in quite a few I have
sold them for less or as much as I paid for them. Not to mention my time and
packing, shipping, etc.
No, I'm not a charity. But I'm also genuinely interested in the hobby. I make a
few bucks and it helps me pay my tuition. I'm a full time engineering student
and am putting myself through school. I'm really working cheap. And believe me
if I was back in the "real" world with a paycheck coming in every week, I'd
probably give these little guys away for a song or trade them to help someone
elses collection.
> This message to me feels like little more than trolling for dollars...
Sorry it appears that way. I really try not to post this stuff too much.
Greg
Hello,
Does anyone know something about Digital Microsystems DMS-3F? I saw one
today. It has a built-in monitor, 2 5.25" floppy disk drives, centronics
printer interface, and 4 serial ports (?) for connecting terminals I
presume. If it is worth collecting then I will haul it home.
I also saw a DEC Rainbow. However, it is priced at $89.95--way more than I
am used to pay. Does a DEC Rainbow worth this much?
I picked up a mint condition Timex Sinclair 1000 though. I have been
wanting to collect it for some time. Does anyone know the polarity of its
9V DC input? I don't want to risk damaging it by reversing the polarity.
Thanks in advance for any information.
George
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