On 2002-06-17 cctalk(a)classiccmp.org said to kees.stravers(a)iae.nl
>>Back to something more on topic... This last week at auction, I
>>picked up one of the oldest cd writers I've ever seen, which is
>>ironically made by Philips. It appears to have a SCSI interface,
Why is this ironically? Philips and Sony developed the CD standard
together, so it would be natural that the oldest writers are Philips
and Sony ones. Sadly I don't have one, they were incredibly expensive
in those days. I do have the CM-100 and CM-110, the earliest Philips
CD readers. Those were built like tanks and still work today.
Kees.
--
kees.stravers(a)iae.nl
Geldrop, The Netherlands
http://home.iae.nl/users/pb0aia/
Member of Insomniacs Anonymous
Net-Tamer V 1.08.1 - Registered
On Jun 18, 13:30, Andreas Freiherr wrote:
> Is the "Belling Lee Coaxial Plug" what I know as an IEC-type 75 Ohm
> connector? - It has a larger diameter than F connectors, and is neither
> threaded nor otherwise locked (not like BNC, for instance).
Probably. I've certainly seen the plugs we use, in Germany (or at least,
in Austria). Have a look at http://www.farnell.com/datasheets/21296.pdf
and see if the picture matches. Or look up DIN45325/IEC169-2
> Balanced (unshielded) cable for TV antennas had been in use in Germany,
> too, but it had 240 Ohms impedance, and it was replaced by 75 Ohm Coax
> about at the time when valves were replaced by transistors.
We used to have 300-ohm twin feeder for VHF (about 86-106MHz) FM radio
antennae, but it's rare now. Mostly 75-ohm coax.
--
Pete Peter Turnbull
Network Manager
University of York
Hi folks,
A few years ago, I posted a webpage about Lisa/MacXL technical info: <http://www.cs.dartmouth.edu/~woz/>. I intend to add more stuff to it...someday. It's still up, but I noticed the other day that the Lisa software archive, hosted on a separate ftp server, was unreachable. I guess the sysadmin closed it down. However I snagged the files from a backup and moved them, temporarily, to my own machine (which has a semi-static IP, broadband). So, if anyone needs a copy of (de-serialized) Lisa Office System, LisaTest, MacWorks, etc. the disk images are now here: <http://66.177.162.74/lisa-files/>
The link on the website has been updated as well.
If any of you (Sellam?) had listed the ftp link separately, please update. I'll send another note when I have the new, permanent home for these files.
Thanks,
-- MB
You can always try cleaning them ;)
http://www.pcnineoneone.com/howto/cleandrive1.htmlhttp://www.datadocktorn.nu/us_frag1.php
-----Original Message-----
From: David Woyciesjes [mailto:DAW@yalepress3.unipress.yale.edu]
Sent: Tuesday, June 18, 2002 1:15 PM
To: 'cctalk(a)classiccmp.org'
Subject: RE: Bulk Tape Eraser
> From: Chris
>
> > Bottom line . . . demag a HD and it becomes
> >a doorstop.
>
> I prefer to take them apart and make wind chimes from the platters.
>
> -chris
>
Or a drink coaster. The circuit boards is good as a backer for a
notepad. And use the cases for banks, letter holder, pen holder, etc...
Sorry. Brain wandering OT again. Hopefully you'll at least chuckle
at me, if not with me. :)
--
--- David A Woyciesjes
--- C & IS Support Specialist
--- Yale University Press
--- (203) 432-0953
--- ICQ # - 905818
Mac OS X 10.1 - Darwin Kernel Version 5
Running since 01/22/2002 without a crash
I have a floppy problem with a Lisa 2/10 (MacXL ?): After inserting a
disk, a dialog appears (MacWorks XL) stating that the disk isn't
formatted (it is). If I chose to eject the disk, the spindle motor
continues to rotate. This doesn't happen during all ejects - it's an
intermittent problem, but I have never been able to read from the
floppy. This is a 400K drive.
1) I have cleaned the stepper cam, the head, and the ejection path and
have lubricated various parts. The head travels properly and the
ejection motor is functional. Where should I proceed?
2) The front fascia doesn't align properly due to the front of the 400K
floppy protruding a few millimeters. The front will snap into place
properly on the left 'catch', but is bulging out on the right catch. I
can't see why this is so, as the drive case is flush with the chassis,
and there is no possibility of the floppy sitting too far forward due to
the recessed mounting screws. The floppy appears to be just too long
(?) Has anyone else seen this.
3) Mouse related: How is the mouse supposed to secure to the connector
on the motherboard? The mouse has the standard two thumbscrews, but the
motherboard is lacking the metal jacket that would normally contain two
nuts to recieve the connector screws - it's just the black plastic DB-9
connector. Something seems missing in this picture. Any clues?
Thanks,
Jeffrey H. Ingber (jingber _at_ ix.netcom.com)
Hey Doc --
> From: Doc Shipley <doc(a)mdrconsult.com>
> Well. I was roaming yesterday and found a very nice old Macy's dress
> box. In it was a TS-1000 with the TS-1016 16k memory cartridge, manuals
> cables, and around 10 tapes, including PIM apps & games. After
> soldering a broken joint on the m/b [1], running to WallyWorld at 2:00am
> for a 300ohm-to-75ohm converter, and finally figuring out that I needed
> to turn the brightness all the way up on the TV, the little booger
> works.
Cool! Welcome to the international ZX81/TS-1000 community. There are LOTS
of us out here still finding new applications for these things.
> This is the first computer I've had that was in need of board-level
> repair to start with, simple enough to ID the problem (and not too
> densely populated), and common and cheap enough to "risk" non-essential
> modifications.
Which makes it darn near perfect, IMHO. If only it were just a little tiny
bit faster ;>)
> Texas Instruments trained me as a "Certified Solder
> Sucker" or whatever in 1982, but I really haven't done any electronics
> work since. I build cables, solder all the joints on auto work, and
> stuff, but till last night had truly forgotten the joys of eutectic
> solder. Also till last night, I had truly not realized how much worse
> my eyesight has gotten....
Yeah, that sucks. I need a really bright light about eight inches away
>from the work and a super-fine tip to do anything intricate anymore. It's
hell getting old but it sure beats the alternative . . .
> The card-edge cartridge connector is worn nearly through the traces on
> the m/b. If the computer is jostled much at all, it loses the RAM and
> its little mind. Next mod will be to do some (cheesy, yes I know) wire
> patching to the finger traces.
Or, you can make a cable to run between the computer and the RAM pack. Or,
you can make supports for both so that each is stable. Or, you can adapt
or buy a full-size keyboard so that the vibration from typing doesn't
disturb the components.
> I joked last night about just going to the thrifts for a $5 B&W TV,
> but my experience with tuning and brightness matches Jeff Hellige's
> comments, and I may do exactly that if I keep this. What I'll more
> likely do is try Glen Goodwin's idea and tap the composite signal off
> the motherboard.
Yeah, I sent you the schematic earlier. Hope it helped. If you run some
wires from the pcb to the empty forward part of the shell, and use an
in-line female RCA jack, everything fits nicely inside (except the jack)
and the wires connected to the RCA jack will easily pass through the shell
near the "earphone" jack.
> The major question concerns the program tapes. I tried hooking up to
> my stereo, the only cassette player I have anymore, and at any volume,
> it just blows the Timex away. The display goes to hell, it doesn't seem
> to "read" the program, and the display stays scrambled even after the
> cassette stops. The manual states that a "Hi-Fi" tape deck, as opposed
> to a cheap battery-driven portable, may be the source of problems. Does
> anybody have a suggestion or solution? My instinct is that my cheap
> stereo does enough EQ (not optional) to "blur" the signal.
Finding an appropriate cassette recorder can be a challenge, so I would
suggest that you don't hunt for one using tapes of unknown quality. First,
try SAVEing a one line program onto a good-quality (doesn't have to be
great, just good) new blank cassette. Then re-LOAD the program. Try
different volume levels. This is the only way to verify that the recorder
is suitable for both operations. Then try LOADing your other tapes.
Last time I had to hunt for a suitable cassette machine (four years or so
ago) I went through several, including a nice Sony, before I found that the
best match was a Radio Shack (can't believe I'm writing this) Optimus.
Cost about $40, but worth it if you plan on using the TS-1000 very often.
> One of the websites I found last night quotes the promo for the 16k
> cartridge - something like "With the addition of 16 kilobytes of memory,
> the Timex Sinclair 1000 could conceivably store a program of 960 lines,
> but of course. no programmer would ever need to..."
ROFL! Which site? The payroll program I wrote and used at Consolidated
Electronics was well over 960 lines so I had to use a 64KB pack.
For tons of info, links, etc. please visit our ZX-TEAM website at:
http://home.t-online.de/home/p.liebert/zx-team.htm
For a nice listing of available hardware, try Jack Boatwright's site:
http://www3.outlawnet.com/~jboatno4/
Of course, I'll be glad to help you as much as I can, so if you have any
questions please don't hesitate.
Later --
Glen
0/0
You wrote:
> See photos from VCF Europa 3.0 here:
> http://www.vintage.org/gallery.php?title=VCF%20Europa%203.0&grouptag=VCFEUR…
> Gaby Chaudry, VCF Europa 3.0 Exhibitor and CP/M Archive maintainer,
> has more pictures of VCF Europa 3.0 exhibits here:
> http://www.gaby.de/vcfpics/vcf3gaby/index.htm
Why is it that a PC-5000 is described as a "Sharp PC-5000",
a Cyber 960 is described as a "Control Data Corporation Cyber 960",
an CPC is described as a "Amstrad CPC",
..... a "IBM 3270",
..... an "Apollo Domain",
..... a "Sinclair QL",
but the VCF Europa 3.0 1st place Best of Show is described as an
"analog computer"?
I want to thank Gaby Chaudry for at least displaying a picture
this computer.
--Doug
The Analog Computer Museum has a new display of many fine
Telefunken computers at:
http://dcoward.best.vwh.net/analog/tele.htm
=========================================
Doug Coward
@ home in Poulsbo, WA
Analog Computer Online Museum and History Center
http://dcoward.best.vwh.net/analog
=========================================
>In Wellington, New Zealand, a large proportion of the traffic lights in
>the central city (A city of 450,000 people) is controlled by a
PDP11/34a.
>This 11/34a has been in place since 1981, I believe, and since it just
>continually does its job, its yet to be replaced.
>They use a VAX of some description as a backup unit.
>
>At last count - which was maybe 3 or 4 years ago now - the unit hadn't
>been power cycled since '84.
>
The really amazing part to all this is that they apparently haven't had
a power failure in 18 years...
Not much to report here, nice turnout, and a few odd items worth noting
. . . . .
There was a Fluke something, that looked like some sort of terminal that
set up data acquisition on an IEE-488 buss. He had the complete unit
and software and docs. All I remember is that the CRT had a 2:1 aspect
ratio. I'm sure this will turn on some of you obscure stuff collectors.
Gateway had a nominal presence there, but nothing worth noting, just
some PC stuff.
I did pick up a Commodore MPS-801 printer . . . are ribbons still
available and for how much??? If I can't get any ribbons, I'll just
contribute it to someone who wants to give it a nice home and call the
dollar invested a loss.
I even found one (wished there were more) AUI to 10 base T transceiver.
Now I can check out my Amiga ethernet boards, if the Xcvr is okay . . .
. .
Two TRS80 Model 100's were there for $50, with books. I was tempted,
but I passed them by. I'm sure I'll kick myself later on.
One last mention, not in line with this topic, but I do have an original
DEC (quantum) 240 Meg HD for trade. I have a surplus of Quantum drives,
and I have used this one on my Amiga with no problems. If you want one
for your DEC contact me off-list and we'll work out a trade or something
interesting.
Gary Hildebrand
St. Joseph, MO
