On 10/3/24 15:28, Chris Elmquist via cctalk wrote:
Just curious if you had a known "good" drive, a golden unit so to speak,
that was well aligned with an authentic alignment diskette-- could you
then use that drive to write plain old data diskettes that the downstream
users would then align their
On 10/3/24 14:25, Chuck Guzis via cctalk wrote:
On 10/3/24 10:51, Norman Jaffe via cctalk wrote:
The IBM 360 single precision floating point has a range of 10**-79 to 10**75;
double precision and extended precision has the same number of bits for the
exponent.
...and most significanrly, norma
On 10/2/24 09:11, Paul Koning via cctalk wrote:
On Oct 1, 2024, at 8:06 PM, donald donaldwhittemore.com via cctalk
wrote:
I rue the day I lost an eBay auction. It was a PR photo with a good looking
model mounting a disk in an open drawer of a 2314. If you looked carefully you
would see she
On 10/1/24 18:29, Tom Gardner via cctalk wrote:
I wouldn't call the 2314 low tech - it was the highest areal density at the
time, a breakthru with ferrite heads and very low cost to manufacture. Note I
said cost, its profit margin was enormous, in part by putting as much expensive
electronic
On 10/1/24 11:45, Tom Uban via cctalk wrote:
I should note that my local store's primary business at
this point is installing AV systems into peoples homes and
repairing old stereo equipment, which means they are
likely the largest consumer of their own stock, but when I
need a resistor, tra
On 9/30/24 21:03, Bob Rosenbloom via cctalk wrote:
On 9/30/2024 6:31 PM, Jon Elson via cctalk wrote:
On 9/30/24 16:23, Paul Koning via cctalk wrote:
One application for devices like that would be vacuum
tube power amplifiers, to delay the high voltage power
supply until after the heater
On 9/30/24 16:23, Paul Koning via cctalk wrote:
One application for devices like that would be vacuum tube power amplifiers, to
delay the high voltage power supply until after the heater current has been on
for a bit.
paul
On Sep 30, 2024, at 5:21 PM, Van Snyder via cctalk
wrote:
On 9/13/24 22:21, Mark Huffstutter via cctalk wrote:
I think David meant He saw them working on refurbishing the panel
itself. LCM Staff designed and
Built the circuitry to generate the pseudo blinkenlights effect, along with
converting to LEDs. As I recall, the
Panel was the only thing
On 9/13/24 12:38, Paul Koning via cctalk wrote:
It's curious that the ASR33 went for $24k while the ASR35 "only" fetched $3k.
The 35 is less common as well as far more reliable (and heavier).
Yes, I spotted that too! I think the 35 is also quieter
than a 33. The 33 is supposed to survive f
On 9/10/24 20:06, Christopher Zach via cctalk wrote:
Interesting. I wonder how they handled the stekler boards
The stecker (plugboard) is just another rotor that never
moves, so is much easier to deal with. If you have the
codebooks, you also know the stecker plug setting, but
without the bo
On 9/10/24 17:37, Maciej W. Rozycki via cctalk wrote:
On Tue, 10 Sep 2024, Paul Koning via cctalk wrote:
Any special provenance? (Hitler's personal Enigma?, BillG's' Altair?,
Steve's Apple?)
Nope. But the Enigma is a four-rotor Navy model, not the more common
3-rotor one. I didn't know that
On 9/3/24 17:28, David Barto via cctalk wrote:
I’d love to see that program. As a UCSD Pascal developer (at UCSD back in the
day) interesting Pascal programs are always something that I’m interested in
seeing/reading.
I have attached the .pas source file, as well as a .net file
that defines t
On 8/30/24 23:40, ben via cctalk wrote:
>> By the way, the earth is round...
>
> I'm glad we can agree on this. Of course the Earth is
round.
>
> It's also hollow.Oh it is a donut!>
> To try and turn this thread around: I'm looking to make
an extended
> memory controller for my pdp8/L. I've go
On 8/30/24 21:25, cz via cctalk wrote:
By the way, the earth is round...
I'm glad we can agree on this. Of course the Earth is round.
It's also hollow.
To try and turn this thread around: I'm looking to make an
extended memory controller for my pdp8/L. I've got a wire
wrap backplane and eno
On 8/18/24 21:51, Paul Anderson via cctalk wrote:
Does anyone remember how this is done? Or the BC11- to the one used in 8s?
Thanks, Paul
I seem to recall that the M920 has two boards with the
double-wide DEC connectors, that had a plastic spacer
riveted between them, and about 6" of the spe
On 8/17/24 17:51, Mike Katz via cctalk wrote:
For all of you who are DEC computer nuts (or aficionados)
we will have our second annual DEC "Nut" pizza get
together after the show at my house on Saturday (Sept 7th)
after 7PM.
I am unemployed so I ask all who attend to contribute to
the cost o
On 8/16/24 23:13, Sellam Abraham via cctalk wrote:
On Fri, Aug 16, 2024 at 10:18 AM Jon Elson via cctalk
wrote:
On 8/16/24 11:44, Sellam Abraham via cctalk wrote:
On Thu, Aug 15, 2024 at 4:01 PM Kevin Anderson via cctalk <
cctalk@classiccmp.org> wrote:
I am surprised they ha
On 8/16/24 11:44, Sellam Abraham via cctalk wrote:
On Thu, Aug 15, 2024 at 4:01 PM Kevin Anderson via cctalk <
cctalk@classiccmp.org> wrote:
I am surprised they have the estimated opening bids amounts for the DEC
PDP-10 systems, as well as the IBM 7090, set so low. They can't be that
numerous e
We were given an expensive device (X-ray fluorescence
analyzer) that had a dying computer. The instrument had an
ISA bus card to interface to it. I cloned the hard drive,
and tried to get it to boot properly on a new "industrial"
computer that had ISA slots. The original OS was DOS 3.1
That
On 7/25/24 08:36, Nigel Johnson Ham via cctalk wrote:
On 2024-07-25 09:05, Tom Uban via cctalk wrote:
On 7/25/24 07:59, Christian Corti via cctalk wrote:
On Thu, 25 Jul 2024, Tom Uban wrote:
controllers (SC31, SC72). If you are interested in
these items, I am looking to reduce my collection (I
On 7/24/24 10:47, Liam Proven via cctalk wrote:
Would anyone like to rescue a vintage Pick minicomputer in
Manitoba, Canada?
https://discuss.systems/@ahelwer/112836345012817998
«
A wide ask here so please boost: my grandfather is trying
to get rid of an old business computer, and I was
wonde
On 7/22/24 21:41, Ethan Dicks via cctalk wrote:
On Mon, Jul 22, 2024 at 9:05 PM Igor via cctalk wrote:
Me and my buddy are building an Apple I replica, for now successfully.
Recently we have tested the video signal :) However, we are having big
problems (as you can imagine) with finding Signeti
On 6/27/24 10:41, ben via cctalk wrote:
On 2024-06-27 9:22 a.m., Jim Brain via cctalk wrote:
The idea of leaving these items behind and thinking our
loved ones will see any value from selling is ludicrous,
though, and I question the sanity of those who seriously
believe this. While I am sure
On 6/25/24 18:50, Sellam Abraham via cctalk wrote:
I think this is an appropriate time for this announcement.
Over the many years I've been collecting, there have been more than several
instances of a collector dying and their collection effectively being cast
to the wind because their surviving
On 6/25/24 15:51, Chuck Guzis via cctalk wrote:
On 6/25/24 13:28, Tom Uban via cctalk wrote:
If Paul Allen was unable to setup his museum, something he clearly cared
deeply about, in a way that would not be dissolved when he passed, who
could?
I think he really thought he had more time on eart
On 6/19/24 11:40, Mychaela Falconia via cctalk wrote:
Jon Elson wrote:
WOW, sad news!\u00A0
Yes, very sad news indeed! Lynn's story was my inspiration back in
2013-2014; after coming across her story and reading it breathlessly,
I started my own journey, following in her footsteps.
Yes, Lar
On 6/18/24 21:09, Murray McCullough via cctalk wrote:
Today I came across an obituary of Lynn Conway, computer pioneer in the
field of VLSI(along with Carver Mead) and also in one called dynamic
instruction scheduling(used in supercomputing world). More to the point
Conway was transgender and suf
On 6/14/24 15:51, Jacob Ritorto via cctalk wrote:
Hi,
Just got a real (Cipher M990 on TS05-emulating controller) tape drive
running and would like to make exact copies of some [9-track] tapes "to
guard against disaster." Probably will also do some imaging, so bonus if
the candidate program ca
On 6/14/24 15:51, Jacob Ritorto via cctalk wrote:
Hi,
Just got a real (Cipher M990 on TS05-emulating controller) tape drive
running and would like to make exact copies of some [9-track] tapes "to
guard against disaster." Probably will also do some imaging, so bonus if
the candidate program ca
On 6/12/24 09:52, Jon Elson via cctalk wrote:
On 6/12/24 03:02, Peter Corlett via cctalk wrote:
Fun factoid: despite modern x86 being clocked ~1000x
faster than ye olde
6502, there's not much in it between them when it comes
to interrupt
response time. If all goes well, x86 takes &qu
On 6/12/24 22:32, Gavin Scott via cctalk wrote:
Is it possible they were thinking about really old FAX paper which
might have been wet to support marking via an electric discharge
through it (and to (slightly) reduce the frequency with which the
receiving machine caught fire)?
Yes, there was te
On 6/12/24 03:02, Peter Corlett via cctalk wrote:
Fun factoid: despite modern x86 being clocked ~1000x faster than ye olde
6502, there's not much in it between them when it comes to interrupt
response time. If all goes well, x86 takes "only" a hundred-ish cycles to do
its book-keeping and jump t
On 6/8/24 20:52, Sellam Abraham via cctalk wrote:
Is it Artronix or Artronics, out of Plainfield, New Jersey (according to
the label, formally TechArt Systems 2000)? Because if the latter, I have
one right here, though I can't tell you the model number because it is not
displaying one. The ser
On 6/8/24 15:17, jim stephens via cctalk wrote:
On 6/8/24 12:33, Jon Elson via cctalk wrote:
On 6/8/24 11:56, Vincent Slyngstad via cctalk wrote:
On 6/8/2024 7:43 AM, Jon Elson via cctalk wrote:
On 6/7/24 20:42, Vincent Slyngstad via cctalk wrote:
On 6/7/2024 6:19 PM, Jon Elson via cctalk
On 6/8/24 11:56, Vincent Slyngstad via cctalk wrote:
On 6/8/2024 7:43 AM, Jon Elson via cctalk wrote:
On 6/7/24 20:42, Vincent Slyngstad via cctalk wrote:
On 6/7/2024 6:19 PM, Jon Elson via cctalk wrote:
OK, I have to chime in here. I worked for Artronix
about 1972. The LINC computer was
On 6/7/24 20:42, Vincent Slyngstad via cctalk wrote:
On 6/7/2024 6:19 PM, Jon Elson via cctalk wrote:
OK, I have to chime in here. I worked for Artronix about
1972. The LINC computer was developed at MIT for use in
biomedical research labs, and a bunch of people involved
with it later moved
On 6/7/24 10:29, Bill Degnan via cctalk wrote:
Still valid?
Personal Computer Milestones - Fun page that attempts to answer the
question: "What was the first PC?"
http://www.blinkenlights.com/pc.shtml
OK, I have to chime in here. I worked for Artronix about
1972. The LINC computer was develo
On 6/1/24 07:20, Liam Proven via cctalk wrote:
On Tue, 28 May 2024 at 19:32, Jon Elson via cctalk
wrote:
There's a story about a guy in Australia that found an
abandoned IBM 360/30 in a storage/shipper's warehouse and
dragged it to a rented office space that had no elevator. He
On 5/28/24 13:34, CAREY SCHUG via cctalk wrote:
On 05/28/2024 1:05 PM CDT Sellam Abraham wrote:
What if a corporation in 1970 purchased an IBM 360 for each of their employees for their individual personal use? Now what?
Sellam
1. I don't believe ANYBODY could purchase a 360. You ha
On 5/28/24 12:02, ben via cctalk wrote:
Same concept as, if one guy living in a formerly
industrial loft has water cooling, and 300 amp 3 phase
power available, that does NOT make any computer
requiring that "personal". For that I'd say must be able
to plug into 50% of all homes, but reali
On 5/28/24 10:00, CAREY SCHUG via cctalk wrote:
Au crontraire, I belive the first mobile phones were mostly purchased by
corporations for their executives to use, if the executive left, the phone
stayed with the corporation. Early mobile phones were NOT personal devices.
In 1971 or 1972 I was
On 5/25/24 13:05, CAREY SCHUG via cctalk wrote:
When announced and sold new, were the SIMON, LINC and G-15 sold and described as, in the
exact words, "personal computer"? Did the guy with multiple supercomputers in
his basement buy them NEW, to use them for their designed purpose? If not they
On 5/24/24 11:49, Mike Katz via cctalk wrote:
The problem with this debate is that the definition of
Personal Computer is totally fluid and can be written so
that the writers opinion is fact.
Yes, the Bendix G-15 was said to be the first personal
computer. It was as big as a refrigerator, and
On 5/19/24 10:57, Sellam Abraham via cctalk wrote:
I am seeing this hobby growing beyond my own expectations, and a lot of
younger people are coming into it.
Yes, I have been to two Vintage Computer Fests at the
Chicago location. Most of the people there are fairly
young. There are some old
On 5/16/24 15:15, Martin Bishop via cctalk wrote:
Micha
That the board is TTL and 2 layer by the look of it makes reverse engineering
rather more tractable : good luck.
The 25p D pin outs for readers/punches seem substantially standardised,
I believe the standard is RS-323 (all search attemp
On 5/4/24 10:21, W2HX via cctalk wrote:
I wonder how well that machine would do at bitcoin mining
Umm, it will consume about 4000 Dollars of electricity per
day! That is not counting the cooling required, just the
power input. that's about $15 million per year.
Jon
On 5/2/24 05:55, Liam Proven via cctalk wrote:
On Thu, 2 May 2024 at 00:51, Fred Cisin via cctalk
wrote:
What would our world be like if the first home computers were to have had
APL, instead of BASIC?
To be perfectly honest I think the home computer boom wouldn't have
happened, and it would h
On 5/1/24 18:43, Norman Jaffe via cctalk wrote:
APL is very much alive - it was invented in the '60s.
Lisp is slightly older and it, as well, is still in active use - and it's older
than FORTRAN, which was the inspiration for BASIC.
Lisp is VERY VERY much alive, but rarely seen. The emacs
ed
allow me to direct my research, which is why I need some
advice ;)
On 30/04/2024 19:05, Jon Elson via cctalk wrote:
On 4/30/24 10:46, Dominique Carlier via cctalk wrote:
Hello everyone
I need your help to identify an issue on my Diablo Model
40 Series. I don't know where to look, it
On 4/30/24 10:46, Dominique Carlier via cctalk wrote:
Hello everyone
I need your help to identify an issue on my Diablo Model
40 Series. I don't know where to look, it's so vast !
Here's the problem:
When RUN is activated, the drive begins its spin up and
simultaneously deploys the heads (no
On 4/27/24 17:02, ben via cctalk wrote:
Did any one need REAL BCD math like the Big Boys had?
No, this is a fallacy. Binary arithmetic is as "accurate"
as decimal. Handling VERY large numbers in floating point
loses some precision, but any computer can do multiple word
binary quite well.
On 4/22/24 19:14, Bill Gunshannon via cctalk wrote:
On 4/22/2024 2:30 PM, Paul Koning wrote:
On Apr 22, 2024, at 2:09 PM, Bill Gunshannon via cctalk
wrote:
Following along this line of thought but also in regards
all our
other small CPUs
Would it not be possible to use something
On 4/22/24 16:06, Paul Berger via cctalk wrote:
On 2024-04-22 5:21 p.m., Chuck Guzis via cctalk wrote:
On 4/22/24 13:02, Wayne S wrote:
I read somewhere that the cable lengths were expressly
engineered to provide that signals arrived to chips at
nearly the same time so as to reduce chip “wait
On 4/19/24 21:07, Fred Cisin via cctalk wrote:
Gee! Have sales gone down?
One more reason to use the 8080 subset when writing CP/M
programs.
Aren't there already some licensed second sources?
Harris also made an all-CMOS plug-compatible Z-80. I used
it in a low-power project.
Jon
On 4/19/24 20:57, Bill Degnan via cctalk wrote:
As it is now, running z80 production must no longer be profitable for
Zilog, but some other manufacturer can license z80 production. Right? If
there is a demand someone will produce them
Rochester Electronics might buy up the masks and uncut
On 4/12/24 20:55, ben via cctalk wrote:
Did any one ever use a keyboard to magtape as input device?
I bought a surplus desktop key to tape machine made by
Pertec. It had a 7" 9-track drive in it, a small core
memory and a field of light bulbs to show the read-back
contents, as well as the ke
On 4/12/24 20:21, Paul Koning via cctalk wrote:
On Apr 12, 2024, at 7:48 PM, Van Snyder via cctalk
wrote:
... The other was to print on its "whippet"
printer, a very fast electrostatic printer that put soot onto a thermal
paper that was then heated to "fix" it. There was a huge variac under
On 4/10/24 11:19, Chuck Guzis via cctalk wrote:
On 4/10/24 08:17, Jon Elson via cctalk wrote:
The 360/20 had only halfword instructions, no float, no char strings.
But, main storage was 16 bits wide.
I'm not quite sure what you mean by "char strings", but SS instructions
MVC
On 4/10/24 07:18, CAREY SCHUG via cctalk wrote:
Nearly all the 360s were microcoded, so adding a bit more microcode let them
emulate 1400/7000 series computers as a standard optional feature. (well the
model 44 emulated the 1620, and probably the 95/195 could not emulate anything
since they we
On 4/10/24 01:51, Van Snyder via cctalk wrote:
On Tue, 2024-04-09 at 22:21 -0700, Chuck Guzis via cctalk wrote:
On 4/9/24 22:03, ben via cctalk wrote:
On 2024-04-09 8:53 p.m., Murray McCullough via cctalk wrote:
I had not realized the IBM 360 was 60 yrs. old this month. I
worked on
such
a comp
On 4/10/24 00:21, Chuck Guzis via cctalk wrote:
On 4/9/24 22:03, ben via cctalk wrote:
What model of a 360? 8K sounds a lot like a Model 20, which the purists
may not consider to be a "real" member of the family.
Yup, the /20 should have been called a System 180, as it was
about half of a 3
On 4/2/24 00:03, Just Kant via cctalk wrote:
Accordimg to certain individuals on this list, going back a few years,
electronics/computers can be damaged due to an electrical storm, presumably
very intense activity, even while off. Go look through the archives.
I have had two incidents where ne
On 4/1/24 20:46, Christian Kennedy via cctalk wrote:
On 4/1/24 17:42, CAREY SCHUG via cctalk wrote:
Will things like PDAs and tablets, powered off and stored
inside steel ammo boxes survive?
Yes, as will most contemporary electronics, even without
elaborate protection.
Right, I think there
On 3/17/24 11:11, Jon Elson via cctalk wrote:
On 3/17/24 09:13, Bill Gunshannon via cctalk wrote:
I have often wondered about the people we find in the
various
DEC Processor (and other) books. Were they models in staged
photo-sessions or were these candid shots from DEC
facilities
and if
On 3/17/24 09:13, Bill Gunshannon via cctalk wrote:
I have often wondered about the people we find in the various
DEC Processor (and other) books. Were they models in staged
photo-sessions or were these candid shots from DEC facilities
and if so, can anyone identify who they might be.
I know
On 2/27/24 20:34, CAREY SCHUG via cctalk wrote:
Again, even if somebody offered me a complete IBM model 30 with disk and
tape drives, I could not afford the shipping. would
A 360/30 could be a real problem. It used air bags to push
the microcode cards against the bit line boards. Those air
On 2/27/24 08:58, erik--- via cctalk wrote:
Hi Jon!
think the Bendix G-15 had cassettes for the 5-level tape
they used.
Aha, interesting! Did a short search, but have not been able to
find a picture of a casette. Just a pile of paper tape instead ;-)
https://images.app.goo.gl/HYqkpYHJUxZeGfiA
On 2/27/24 00:17, Dr. Erik Baigar via cctalk wrote:
I wonder whether anyone kows if someone else had the idea
of putting paper/mylar tape into a casette for repeated use
e.g. to load an OS or similar.
I think the Bendix G-15 had cassettes for the 5-level tape
they used.
I had an optical re
On 2/25/24 16:20, Gavin Scott via cctalk wrote:
Turbo Pascal is even still available as its originators took it back
from Borland and made it into Visual Prolog for Windows which has a
free personal edition (the commercial license is only 100 euros too).
Also there's GNU Prolog if you just want
On 1/30/24 11:09, Jon Elson via cctalk wrote:
On 1/29/24 22:07, Bill Degnan via cctalk wrote:
Anyone have a VMEbus system they use at least
occasionally? If so, what
make/model/config?
Oh, also my Samsung-made pick and place machine has a 68020
to run the motion system, and a PC that runs
On 1/29/24 22:07, Bill Degnan via cctalk wrote:
Anyone have a VMEbus system they use at least occasionally? If so, what
make/model/config?
We have a Weiner VME system, specifically designed for
nuclear data acquisition.
I have a couple other VME crates with power supplies we use
for the sam
On 1/4/24 15:49, Paul Koning via cctalk wrote:
On Jan 4, 2024, at 4:32 PM, Liam Proven via cctalk
wrote:
Evangelist of lean software and devisor of 9 programming languages and
an OS was 89
https://www.theregister.com/2024/01/04/niklaus_wirth_obituary/
The great man has left us.
Great man,
On 12/3/23 15:44, Van Snyder via cctalk wrote:
I have a formerly-gorgeous 27-inch Samsung monitor:
Model LF27T350FHNXZA
Serial 0AS1HCNR904588L
S/W M-T3527FGGA-1006.1
that now has a minor defect. The "wallpaper" has a dim stripe about
1/6th of the screen width, top-to-bottom, about 1/6th from th
On 11/14/23 18:34, Chuck Guzis via cctalk wrote:
On 11/14/23 16:12, steve shumaker via cctalk wrote:
Greetings all.. I'm looking for a Qualstar 1260S 1/2" tape system to
review/recover data from a stack of early Landsat tapes that I came into
a while back. I'd prefer the Qualstar SCSI system
On 10/20/23 11:46, Ethan Dicks via cctalk wrote:
On Fri, Oct 20, 2023 at 12:11 PM Jon Elson via cctalk
wrote:
On 10/20/23 03:59, Michael Thompson via cctalk wrote:
The RICM has an empty 11/20 chassis and the power supply. All it needs is
the processor backplanes. Is there any chance you have
On 10/20/23 03:59, Michael Thompson via cctalk wrote:
The RICM has an empty 11/20 chassis and the power supply. All it needs is
the processor backplanes. Is there any chance you have a set of backplanes
available?
I have a DD11-PK backplane (Part No. 70-11523) with a few
bent pins. None are be
On 10/13/23 12:07, Martin Bishop via cctalk wrote:
The valve audio afficionados / suppliers also offer both wisdom and components,
e.g.
Ages ago I bought a Potter plug-compatible 9-track tape
drive from a surplus shop. It was designed as a 24xx
compatible drive. I was used to Pertec unformat
On 9/7/23 17:18, KenUnix via cctalk wrote:
Hi guys.
Since I can't get out due to my stroke, be sure to post plenty of snaps of
the event...
Sorry to hear about that. I had a very mild stroke 2 years
ago, but it has affected dexterity in my right hand. My
writing is now horrible (my penmansh
On 9/7/23 09:35, Mike Katz via cctalk wrote:
What time is setup Tomorrow (Friday, 8-Sep-23) for VCFMW?
They sent out a message to vendors that it would be open 10
AM to 10 PM, a few people would stay during the pizza dinner
to allow latecomers to load their stuff.
Jon
On 9/6/23 14:00, Mike Katz via cctalk wrote:
Paul,
I'm not an 11 expert but don't most instruction fetches
(or the last clock phase on an instruction) cause the pc
to increment by one?
PDP-11 instructions are 16-bit. Since memory is
byte-addressed, the instruction counter should normally
in
On 9/6/23 12:08, Paul Koning via cctalk wrote:
Reminds me of the "PDP-11 trivia contest" that was held at DECUS, I think on the occasion
of the 20th anniversary of the PDP-11. If so that would have been 2000. I still have the poster
that went with it somewhere. And I remember the question I
On 9/6/23 06:19, Mattis Lind via cctalk wrote:
There have been a number of Ebay listings for various ns32k software, QIC
tapes and 1/2 inch tapes. I thought I would buy them if there were no other
bids to try to recover the contents.
https://www.ebay.com/itm/225759541222
https://www.ebay.com/itm
On 9/2/23 14:49, ben via cctalk wrote:
$ 30 mininum order and 4 weeks shipping to canada stopped me.
$12.06 US from china. (ebay).
I am having my PCB's made from PCBWAY in china. Shipping
takes longer
than them being made. ~ $100 US for the PCB's and ~ $50
for shipping and tax.
I have been us
On 9/1/23 10:54, Hans-Ulrich Hölscher via cctalk wrote:
If you can't get help at the VCF - MW (which I don't doubt), and your
MicroVAx II has a DELQA or DEQNA network adapter, then I know of two other
elegant ways to back up the data from your ESDI disk:
Either: configure your MicroVAX II into a
On 9/1/23 14:38, Chuck Guzis via cctalk wrote:
With all this talk about Friden and Singer, perhaps someone can help me
jog my memory. We were working on a contract that, as remote terminals,
included a card reader (singer) and a printing terminal (singer also).
The terminal consisted of a leadsc
I will be going to the VCF - MW. Does anybody have an
Emulex QD21 that could dump a hard drive for me? I ran a
uVAX II at home of 21 years. Sometime back about 2000 or
so, I upgraded to a cast-off SCSI disk, which eventually
died. I didn't have a convenient backup solution for the
SCSI dis
On 8/30/23 17:14, Wayne S via cctalk wrote:
When s-100 machines came out, they were standalone. The serial port was for
sending serial data not for a terminal. You would have to write some software
to use it with a terminal.
Well, maybe, I did have a home made S-100 system in 1976
with limite
I know I was a little late in making a reservation for a
vendor table at the VCF MW.
But, last year they were able to fit me in. Now, I have
made my request, and not heard ANYTHING whatsoever, even
that they are working on it. The VCFMW web site was last
updated in JUNE! Does anybody know w
On 8/29/23 06:30, Chris Zach via cctalk wrote:
Oh baloney. As long as the backplane pins are not mushed
these are surprisingly easy to fix and mouse crap can be
vacuumed out and cleaned off the cards and pins.
The thing that drove me the most nuts was finding a
backplane wire that had worn th
On Sun, Aug 20, 2023, 12:05 PM John H. Reinhardt via
cctalk <
cctalk@classiccmp.org> wrote:
Hello all. I looking around for a Logic Analyzer for
doing (mostly) DEC
QBus/UniBus stuff. Being the way I am I want something
with enough lines
to handle the most of the signals so I'm guessing
On 8/14/23 21:40, Sellam Abraham via cctalk wrote:
I've been using Libre Office Calc (Linux) to keep track of my new computer
collection.
I use gnumeric. When it first came out, it was a toy. Now,
it is a VERY good spreadsheet, with excellent graphing
capability, wide import and export sup
On 8/14/23 15:42, Fred Cisin via cctalk wrote:
On Mon, 14 Aug 2023, Paul Koning via cctalk wrote:
It's been a while, but I think that RAID originated in
academia, though Cray may well have been one of the
earlier commercial users.
https://www2.eecs.berkeley.edu/Pubs/TechRpts/1993/6306.html
ht
On 8/13/23 11:25, Tony Duell via cctalk wrote:
On Sun, Aug 13, 2023 at 5:20 PM Nigel Johnson Ham via cctalk
wrote:
The DEC Rainbow RX50s only have one motor :-)
{being pedantic}
No they don't. They have 2. A permanent-magnet DC motor used to drive
both spindles and a stepper motor used to pos
On 7/10/23 11:19, Douglas Taylor via cctalk wrote:
I'm looking to see if it possible to do something
similar. Just blasting raw 12bit samples from memory out
the D/A board.
A fine point would be to use the KWV11-C realtime clock
board for the sample rate control. No interrupts, just
polling.
On 7/9/23 13:46, Douglas Taylor via cctalk wrote:
I have a PDP-11/53 and have just started playing with an
AAV11-C D/A board. It is a 4 channel D/A convertor with
12 bit resolution.
Can it be used to play an audio bit stream?
Here is simple code used to see if the thing was actually
working
On 7/1/23 15:10, Sellam Abraham via cctalk wrote:
Don Lancaster passed away on June 7.
https://gilaherald.com/obituary-for-don-lancaster/
I hope his website is well preserved:
https://tinaja.com/
Wow, another legend! Yes, there is a lot of good stuff there.
Jon
On 6/28/23 09:40, Paul Koning via cctalk wrote:
On Jun 28, 2023, at 9:48 AM, Tony Duell via cctalk
wrote:
On Wed, Jun 28, 2023 at 6:00 AM Grant Taylor via cctalk
wrote:
Tony's email makes me ask more questions than I have (smart alack)
answers to. Maybe ~> hopefully I can ~> will learn so
On 6/27/23 20:58, Chris Zach via cctalk wrote:
Yes, the console floppy on an 11/780 was an RX02, and VMS
supported "virtualizing" it through the LSI-11 console
computer so you could mount it just like any other device.
I thought it was an RX01 on an 11/03? It's an RX02?
Yup, I think you a
On 6/27/23 19:11, Bill Gunshannon via cctalk wrote:
More interesting is that All-In-One for the VAX comes on
RX02 and RL02 disks.
I wasn't aware that the VAX or VMS even supported RX or RL
disks.
Yes, the console floppy on an 11/780 was an RX02, and VMS
supported "virtualizing" it throu
On 6/27/23 09:42, Jonathan Katz via cctalk wrote:
Hey folks,
Now that I'm done moving house I have time to wrench on the 6150.
Before moving it worked; you'd power it on, the LCD status countdown
would get to an OK value, but the CRT wasn't legible. I figured I'd be
wrenching on the CRT.
Instea
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