Highly parallel workloads are an important niche in computing.
On Mon, 10 June 2024, 8:48 am Scott Baker via cctalk,
wrote:
> I think the biggest change is our compute resources stopped going faster
> in terms of raw cycles per second, and started going wider in terms of
> parallelism. It's now
Well said.
On Sun, 26 May 2024, 6:59 pm Liam Proven via cctalk,
wrote:
> On Sun, 26 May 2024 at 07:50, ben via cctalk
> wrote:
> >
> > I think the most important thing for a Personal Computer,
> > is the average Joe, can afford and use it.
>
> Yes, agreed.
>
> > The second thing is
> > to have
t; that allowed you to call any PPU program directly from Pascal. It was not
> widely known, but it came in handy at times.
> On Thursday, May 16, 2024 at 01:52:12 a.m. EDT, Chuck Guzis via cctalk
> wrote:
>
> On 5/15/24 22:07, Tom Hunter via cctalk wrote:
> > I th
I thought the CDC CYBER and 6000 series mainframes were great systems which
performed admirably for what they were designed for. I liked COMPASS, SYMPL
and NOS 1 and 2. I didn't do much work in CYBIL, but it was basically an
enhanced version of PASCAL suitable for operating systems work. What is
I too have experimented with OpenGL to simulate phosphor-decay.
I never got to a satisfactory solution. The learning curve for OpenGL is
steep.
On Sun, Apr 7, 2024 at 4:43 PM Lars Brinkhoff via cctalk <
cctalk@classiccmp.org> wrote:
> Phil Budne wrote:
> > I wrote and tuned the code twenty
Sorry I mistyped. I meant Mouser and Digikey, not Amazon and Digikey.
On Sun, 31 Mar 2024, 11:48 am Tom Hunter, wrote:
> I am very happy to buy from Amazon and Digikey even if sometimes they are
> a little more expensive. I want them to be around for the long term, so I
> support them as much
I am very happy to buy from Amazon and Digikey even if sometimes they are a
little more expensive. I want them to be around for the long term, so I
support them as much as possible. Their range is amazing.
On Sun, 31 Mar 2024, 10:53 am Glen Slick via cctalk,
wrote:
> On Sat, Mar 30, 2024 at
nce you power it back down, it may
> get stuck worse than it was before.
>
> I have not tried "cooking" the drive as also mentioned.
>
>
>
>
> -Original Message-
> From: Tom Hunter via cctalk [mailto:cctalk@classiccmp.org]
> Sent: Friday, February 23,
It may be that the voice coil positioner is stuck due to some hardened
grease.
If that is the case, you could try holding the drive in your hand and flick
your wrist hard several times to try to dislodge a possibly stuck voice
coil.
Alternatively you could flick the drive against something soft
I just realised that I never followed up on this.
After some research and a few phone calls to manufacturer support lines I
settled on SikaBond SprayFix as the glue.
The glue is advertised as "contains no chlorinated solvents", is "suitable
for indoor use", is based on a "synthetic polymer", is
Thank you Dave!
On Sat, Nov 25, 2023, 6:36 PM silcreval via cctalk
wrote:
> Dave,
>
> Many thanks for making this source available, I'm going to spend some time
> looking through it all.
>
>
>
;
> On 11/17/2023 8:52 AM, Tom Hunter via cctalk wrote:
> > Hi Bob,
> > I can't help with your search for 8/e front panels, but you mentioned
> > "green switch boards". I have a nicely restored DEC LAB-8/e with green
> > switch toggles. Do you have spare green
Hi Bob,
I can't help with your search for 8/e front panels, but you mentioned
"green switch boards". I have a nicely restored DEC LAB-8/e with green
switch toggles. Do you have spare green switch toggles? I would love to
have one dark green and one light green toggle. I don't need the actual
glue which does not attack the paint would be
better as you can reposition at least for a few seconds.
On Tue, Nov 7, 2023 at 3:33 PM Tom Ivar Helbekkmo via cctalk <
cctalk@classiccmp.org> wrote:
> Tom Hunter via cctalk writes:
>
> > Any suggestions, advice or tips?
>
The PDP 11/34 and 11/04 front panels (both operator and programmer) use a
somewhat stiff plastic sheet of 1.0 mm thickness with DEC logo, model
designation, labels for the keys printed on it, cut-outs for the keypad and
knob and red transparent sections for LEDs and 6 digit 7-segment display.
I
Thank you Christian !!!
Best regards
Tom
On Wed, Oct 18, 2023 at 3:41 PM Christian Corti via cctalk <
cctalk@classiccmp.org> wrote:
> On Wed, 18 Oct 2023, Tom Hunter wrote:
> > I was unable to locate schematics and/or a maintenance manual for the
> > Unibus M7846 RX11 floppy controller board.
>
I was unable to locate schematics and/or a maintenance manual for the
Unibus M7846 RX11 floppy controller board.
If anyone has these could you please scan them and make them available.
Thank you.
Tom
and vcfed.org
is searchable.
Thanks again for your time and effort to explain what I really struggled to
understand.
Tom
On Thu, Sep 28, 2023 at 3:29 PM Brent Hilpert via cctalk <
cctalk@classiccmp.org> wrote:
> On 2023-Sep-27, at 9:01 PM, Tom Hunter via cctalk wrote:
> > The DEC
The DEC H7441 regulator is a relatively complex circuit using 2 x 555
timers, 2 x LM301 op-amps, 2 x transformers and 2 inductors
I am struggling to understand how it is meant to work and was hoping to
find a maintenance manual for it.
Could anyone with such a manual please help?
Alternatively
I have one Interprocessor Buffer (M8326). Of course just one won't help to
connect my Lab-8/e and my PDP-8/e. :-(
On Thu, 31 Aug 2023, 12:49 am Mike Katz via cctalk,
wrote:
> DEC did make the Interprocessor Buffer (M8326) for the Ominibus. That
> allowed for relatively high speed
My trick for successful landing the CDC Cyber/6000 series lunar lander
version was to set the initial height above the moon's surface to the
minimum height of 1' and then let it drop. I never successful landed from
the default height above the surface. It was seriously difficult.
On Tue, 29 Aug
Look at the photos. Let it rust in peace in mouse heaven. It is just scrap.
On Tue, 29 Aug 2023, 1:30 am Bill Degnan via cctalk,
wrote:
> It can be yours for only $15,000 plus shipping
> https://www.ebay.com/itm/126067408991
>
> sheesh.
>
> Bill
>
Hi Tom,
I have a Xilinx CoolRunner-II Design Kit from 2002. It was made by
Digilent. On the silk screen it says Digilab XC2.
You are welcome to have it for the cost of postage from Australia.
Best regards
Tom Hunter
On Thu, Aug 24, 2023 at 2:40 AM Tom Uban via cctalk
wrote:
> I am looking for
Common DSO trigger problems experienced by a novice are:
1) Trigger position is off the screen. The trigger position relative to the
current visible capture is typically shown somewhere on the screen - often
at the top of the screen. Reduce the horizontal resolution to something
like 10
Is it really necessary to be always so confrontational? It is unpleasant.
On Sun, 11 June 2023, 10:44 pm Tony Duell via cctalk,
wrote:
> > Fundamentally, it seems to me that they're all the same basic hardware,
> > timing intervals between flux transitions.
> >
> > So other than the soaftware,
Hopefully the LCM will be sold as a going concern rather than just a
firesale of the assets.
Otherwise a lot of donors and contributors would be rightfully upset - me
included.
I am disappointed that Bill Gates hasn't bought it already to continue
Paul's vision.
Tom
On Mon, Apr 24, 2023 at 11:30
It got all the way Down Under. 8-)
On Fri, 21 Apr 2023, 8:56 am Zane Healy via cctalk,
wrote:
> That was rather my thought, it made it through.
>
> Zane
>
>
>
>
> > On Apr 20, 2023, at 5:38 PM, Paul Koning via cctalk <
> cctalk@classiccmp.org> wrote:
> >
> > Your note got through, that's a
... or four $20 power transistors to protect a 10 cent fuse like on the DEC
VR-14 display.
Tom
On Wed, 19 Apr 2023, 6:16 am Fred Cisin via cctalk,
wrote:
> On 2023/04/18 9:40 a.m., Tony Duell wrote:
> > The blown out resistor likely has "blown out" for a reason.
> > The replacement will
The Ebay listing hasn't sold but has been relisted at the same price.
On Tue, Apr 18, 2023 at 12:16 AM John Robertson via cctalk <
cctalk@classiccmp.org> wrote:
> On 2023/04/17 9:12 a.m., Sellam Abraham via cctalk wrote:
> > My initial reaction is that $2,000 seems a "bit" optimistic.
> >
> >
The blown out resistor likely has "blown out" for a reason.
The replacement will probably suffer the same faith unless you find the
root cause.
On Tue, Apr 18, 2023 at 12:20 AM John Robertson via cctalk <
cctalk@classiccmp.org> wrote:
> I've checked bitsavers.org (Al does a great job!), and a
Does anyone have a surplus DEC M8340 board with PCB etch level E and
revision F (as imprinted on the handle)?
If yes, please reply to thunter6...@gmail.com.
Thanks and best regards
Tom Hunter
run it
>
> On Fri, Mar 31, 2023, 8:49 PM Tom Hunter via cctalk
> wrote:
>
>> I am pretty sure I have a FORTRAN IV version of it running on CDC CYBER
>> and
>> 6000 series mainframes. I will dig it up next time I fire up the emulator.
>> Tom
>>
>&
I am pretty sure I have a FORTRAN IV version of it running on CDC CYBER and
6000 series mainframes. I will dig it up next time I fire up the emulator.
Tom
On Fri, 31 Mar 2023, 8:59 pm Eric Moore via cctalk,
wrote:
> Congrats! I am looking for star trek for fortran 4 if anyone knows where it
>
FSF does not enforce anything. I repeatedly begged for help with Desktop
CYBER which was GPL licensed and they did not even bother to reply.
Tom Hunter
On Thu, Mar 16, 2023 at 7:46 AM Paul Koning via cctalk <
cctalk@classiccmp.org> wrote:
>
>
> > On Mar 14, 2023, at 10:57 PM, Jonathan Chapman
Be careful about throwing stones if you are living in a glass house.
On Tue, 14 Mar 2023, 6:49 pm Peter Coghlan via cctalk, <
cctalk@classiccmp.org> wrote:
> >
> > There are some nice mixed signal oscilloscopes made by Rigol (Chinese)
> at a
> > very affordable price.
> >
>
> Until just over a
There are some nice mixed signal oscilloscopes made by Rigol (Chinese) at a
very affordable price. They have a very deep capture buffer for both analog
and digital signals. The build quality and capabilities of the MSO1104Z I
have are outstanding. I got all the options included for free as a
Thank you very much Vince.
On Sun, 26 Feb 2023, 3:48 pm Vincent Slyngstad via cctalk, <
cctalk@classiccmp.org> wrote:
> On 2/25/2023 10:46 PM, Tom Hunter via cctalk wrote:
> > Hi Vince,
> >
> > Could you please point us to the Makefile which "actually conve
Hi Vince,
Could you please point us to the Makefile which "actually converts a disk
image" using SIMH to "automate the ritual of unistalling RK05 drivers and
replacing them with SerialDisk drivers"?
Thanks
Tom
On Sun, Feb 26, 2023 at 2:34 AM Vincent Slyngstad via cctalk <
cctalk@classiccmp.org>
Ok as Google search is increasingly failing us, what other search engine
should I use?
Tom
On Fri, 10 Feb 2023, 3:28 am Angel M Alganza via cctalk, <
cctalk@classiccmp.org> wrote:
> On 2023-02-09 15:31, Eric Moore via cctalk wrote:
>
> > If in doubt, GOOGLE THE WEBSITE, and see if valid
Avast claims the site is infected with a trojan.
The contact address does not exist: 4144 Fannie Street Houston, Texas 77063
United States
Stay away!
On Thu, Feb 9, 2023 at 2:59 PM Sellam Abraham via cctalk <
cctalk@classiccmp.org> wrote:
> This is an item I had listed on eBay for a couple
Chris, what kind of magnet did you use?
If it was an electromagnet I could imagine that you caused physical damage
by something heating up sufficiently. If it was a permanent magnet then it
might indeed be servo data which has been erased. Either way I expect you
need a very strong magnetic field
ailing due
to overheating.
Core written in the 60s would read just fine today unless something
external to it destroyed the data.
Tom
On Fri, Feb 3, 2023 at 2:12 PM Chuck Guzis via cctalk
wrote:
> On 2/2/23 21:23, Tom Hunter via cctalk wrote:
> > The actual ferrite core doughnut
The actual ferrite core doughnuts do not break down with continued use, BUT
moisture or mechanical impact or vibration will damage or degrade the
ferrite cores. Otherwise the ferrite doughnut will live and maintain its
properties "forever".
The main cause of core memory mat faults is mechanical
Try supp...@microsoft.com
On Wed, 1 Feb 2023, 7:21 am Chris via cctalk, wrote:
> why does this happen? how do I "reset" a floppy drive (in windows) so that
> it tells me what's on the current disk, not what was on the previous disk
> that's been removed.
>
This is not the forum to ask MS Windows questions.
On Wed, 1 Feb 2023, 7:21 am Chris via cctalk, wrote:
> why does this happen? how do I "reset" a floppy drive (in windows) so that
> it tells me what's on the current disk, not what was on the previous disk
> that's been removed.
>
Thanks David!
On Sun, Jan 29, 2023 at 2:07 AM David Gesswein via cctalk <
cctalk@classiccmp.org> wrote:
> Try the new archive
> https://classiccmp.org/mailman3/hyperkitty/list/cctalk@classiccmp.org/
>
> Linked to from the classiccmp page
> https://classiccmp.org/lists.html
>
> On Sat, Jan 28,
It appears that the cctalk archives stopped updating in July 2022. See the
link below:
https://classiccmp.org/pipermail/cctalk/
Could the new list admin please re-enable the archive feature of the
mailing list and if possible fill in the missing months since July 2022.
Thanks and best regards
I finally got around to replace the dead TO-3 power transistors in my
VR-14. They are mounted on the power supply regulator heat sink using TO-3
sockets made by AUGAT. Unfortunately one of the sockets has been broken by
somebody in the past by over-tightening the transistor mounting screws.
This
Thank you Tony for your well written and informative post describing the
restoration of a Philips P2000C luggable.
I wish there would be more posts like yours.
Best regards
Tom
On Wed, Jan 25, 2023 at 12:57 AM Tony Duell via cctalk <
cctalk@classiccmp.org> wrote:
> Philip Belben gave me a
You got an amazing bargain. I was expecting at least a magnitude higher
price.
On Fri, 20 Jan 2023, 8:29 am rar--- via cctalk,
wrote:
> We (Computer Museum @ System Source) picked up this unit today.
> Here are a few snapshots after we pulled the unit off of the truck.
>
>
One might ask what is really worth preserving for millenia? None of my
"treasures" qualify I think.
Tom
On Wed, 18 Jan 2023, 9:05 am Paul Koning via cctalk,
wrote:
>
>
> > On Jan 17, 2023, at 3:34 PM, P Gebhardt via cctalk <
> cctalk@classiccmp.org> wrote:
> >
> >
> > Am Dienstag, 17. Januar
G'day Bruce,
Fantastic news about your hobbyist licensed software and manuals and now
the Nova and Eclipse emulators becoming part of OpenSimh.
The Windows & Linux binary only releases were difficult for some of us.
I think now with an open-source emulator "Novas Are Forever" becomes a
reality.
Thank you Rich for shedding light on this. Most of it makes sense to me,
but the secrecy part where you weren't allowed to talk to those still at
the museum is weird. I can't see any possible commercial reason for
preventing former engineering staff to talk with their former colleagues or
The Internet is wonderful for misinformation and a good laugh.
Here even Paul Allen's sister Jody can morph into Paul's wife.:-)
Rich Alderson please provide the LCM facts if you can to stop the silly
rumours.
On Mon, Oct 31, 2022 at 11:36 AM Michael Kerpan via cctalk <
Thank you Bruce! Thats great news.
Best regards
Tom
On Tue, 25 Oct 2022, 6:27 am Bruce Ray via cctalk,
wrote:
>
> Wild Hare Computer Systems, Inc., is pleased to announce that a
> "Hobbyist License" is now available for legacy Data General
> Nova and Eclipse software. This license allows
I was not referring to you Jim. Your message was helpful unlike some of the
others.
On Sat, 22 Oct 2022, 12:39 pm Jim Brain via cctalk,
wrote:
> On 10/21/2022 9:46 PM, Tom Hunter via cctalk wrote:
> > It would be better to stay on topic and avoid the hostile rhetoric of
> some
>
It would be better to stay on topic and avoid the hostile rhetoric of some
of the posts.
Thanks
Tom
On Sat, 22 Oct 2022, 9:49 am Jim Brain via cctalk,
wrote:
> On 10/21/2022 4:55 AM, Peter Corlett via cctalk wrote:
> > On Fri, Oct 21, 2022 at 12:15:02PM +1100, Doug Jackson via cctalk wrote:
> >
it to the wind.
>
> Sellam
>
> On Mon, Oct 17, 2022 at 1:43 AM Ali via cctalk
> wrote:
>
> > You had to ask..I was there 3000 years ago (or about 10 years ago in
> > non Tolkien meme terms) and it wasn't pretty....
> > Original message From: To
Sellam Abraham referred to a "Great Vintage
Computer Heist of 2012". What was that about? Who stole what and where and
why?
Check out this link for a detailed description of the "Stirling Cycle" in
particular the YouTube video at the bottom of the article is very well done
and shows a small machine in operation:
https://www.stirlingcryogenics.eu/en/the-stirling-cycle
Tom
On Sun, Oct 2, 2022 at 1:41 AM Paul Koning
https://www.stirlingcryogenics.eu/
These machines are still made and indeed are very cool. ;-)
Tom
On Sat, Oct 1, 2022 at 4:54 AM Paul Koning via cctalk
wrote:
>
>
> > On Sep 30, 2022, at 1:12 PM, Peter Corlett via cctalk <
> cctalk@classiccmp.org> wrote:
> >
> >> ...
> >
> > Note that
I have just stumbled across this nice "Timeline of Computer History" from
the CHM:
https://www.computerhistory.org/timeline/computers/
I have not seen this before and thought it may be of interest to this list.
Tom
Adrian's find is true computer archaeology.
It will be fit for a museum of 20th century computing ... in 1000 years.
;-)
On Sun, Sep 25, 2022 at 9:42 PM Adrian Stoness via cctalk <
cctalk@classiccmp.org> wrote:
> yea was found in the mud the press board preic spent a few yrs outside
> after i
t; On Sep 22, 2022, at 10:44 PM, Tom Hunter via cctalk <
> cctalk@classiccmp.org> wrote:
> >
> > I cannot understand the mindset of people who buy up components
> desperately
> > sought by others who want to restore machines just to nail them to their
> > man cave or
I cannot understand the mindset of people who buy up components desperately
sought by others who want to restore machines just to nail them to their
man cave or living room wall.
These same types of people vacuum up core memory boards, keyboards, disk
platters, 9-track tapes, etc just for bragging
:51 PM ben via cctalk
wrote:
> On 2022-09-19 10:18 p.m., Tom Hunter via cctalk wrote:
> > There are a few US based Ebay sellers of the 74L85.
> >
> > Tom
> But most ebay sellers, from the USA seem to sell a item for $6.00 and
> $75 shipping to Canada. China $2 and
There are a few US based Ebay sellers of the 74L85.
Tom
On Tue, Sep 20, 2022 at 10:50 AM ben via cctalk
wrote:
> On 2022-09-19 8:07 p.m., William Sudbrink via cctalk wrote:
> > Hi,
> >
> > I recently acquired a Solid State Music SB-1 from which all the chips had
> > been removed. I've
Ebay madness.
On Mon, 18 Jul 2022, 10:57 pm William Sudbrink via cctalk, <
cctalk@classiccmp.org> wrote:
> Why anybody would bid more than three hundred dollars for a bunch of ribbon
> cables?
>
>
>
>
> https://www.ebay.com/itm/234623364778?hash=item36a0a46eaa:g:y1oAAOSwwQdiz550
>
>
>
> Unless
DMARC anti-spam.
>>
>> Maybe the following would help the list admin:
>>
>>
>>
>> https://wiki.list.org/DEV/DMARC
>>
>> https://dmarc.org/wiki/FAQ
>>
>>
>>
>> Thanks
>>
>> Tom
>>
>>
>>
>>
15 AM Tom Hunter via cctalk <
> cctalk@classiccmp.org> wrote:
>
>> I didn't receive any cctalk messages for a few days, so I checked my Spam
>> folder (empty) and then the archive which had several new messages I
>> haven't seen. I then checked my cctalk membership config
Gmail is by far the biggest email provider and works fine with other
Mailman based mailing lists.
How exactly is Gmail causing it and what is the work-around?
Thanks
Tom
On Wed, May 11, 2022 at 2:26 PM Adrian Stoness wrote:
> gmail is causing it
>
> On Wed, May 11, 2022 at 1:15 AM T
I didn't receive any cctalk messages for a few days, so I checked my Spam
folder (empty) and then the archive which had several new messages I
haven't seen. I then checked my cctalk membership configuration.
Surprisingly "Mail delivery" was disabled.
Some time ago I received a few emails from the
You misunderstood what I wrote.
I just expressed surprise about the cost rather than criticizing your
choice of thermal camera.
Other brands are expensive too.
I wonder what makes these cameras more expensive than ordinary USB cameras
working in the visible spectrum.
On Mon, May 2, 2022 at 8:26
The Seek Thermal is surprisingly expensive for what it is - a USB camera
working in the infrared spectrum.
On Mon, May 2, 2022 at 12:19 AM Chris Zach via cctalk
wrote:
> On 5/1/2022 2:14 AM, Rob Jarratt wrote:
> > That's interesting. What did you use for the thermal camera?
>
> Seek Thermal
Yes - CDC 6000 and CYBER series machines running BASIC 2.1 (and all later
versions) under KRONOS and NOS output "RUN COMPLETE." when the user program
finished.
Tom
On Tue, Apr 26, 2022 at 7:29 PM Jules Richardson via cctalk <
cctalk@classiccmp.org> wrote:
> On 4/26/22 02:05, Raymond Wiker
I am curious about your comment about "kryoflux going south".
I did not hear about any problems. Could you please elaborate?
I got mine about 2 or 3 years ago and it did everything I needed at the
time, but haven't used it since.
Thanks
Tom
On Sat, Apr 23, 2022 at 9:19 AM Warner Losh via cctalk
DEC PDP-8/e core memories have a combined Sense/Inhibit line.
There are only 3 wires through each core donut: X, Y, Sense/Inhibit.
The PDP-8/e core memory is very well described starting at page 3-60 of the
Maintenance Manual Volume 1:
t on list, but never heard from Tom about what I sent him.
> thanks
> Jim
>
> On 3/22/2022 9:23 AM, Tom Hunter via cctalk wrote:
> > I came across a reference to a cctalk message from 9 September 200
>
>
I came across a reference to a cctalk message from 9 September 2006 and
would like to read the rest of the thread with the subject "PDP-8m Console
Switch Problems - fixed!".
Unfortunately it appears that the cctalk archive does not go back to 2006.
Is there some place with the complete cctalk
Dave,
Your following comment is offensive:
"I hope these systems go to a good home, and don't disappear into the black
hole of a private collection."
You equate private collections with black holes. I think on the contrary
many private collectors do a better job at preserving old systems than
Hi Gerhard,
The Farnell plugs seem to be 2 mm not 0.1".
I suspect the Pomona plugs you mentioned earlier will be a better fit.
You need at least 100 leads which means at least 200 plugs.
I would get samples of both types before committing to a larger purchase.
Best regards
Tom
On Mon, Mar 14,
Hi Gerhard,
Yes - these look good but the price is much higher than what I paid. As I
no longer work, modifying the cheap Chinese banana plugs was viable. If you
still work and are time limited then the Pomona plugs may be the better
option. It may be best to get a small number first to try
Hi Gerhard,
I used the following banana plugs:
https://www.aliexpress.com/item/1005002907717547.html
Please note that only about 30% of the plugs I received were a good fit.
The rest I had to modify.
I had to remove the barrel shaped contact spring and compress it carefully
to open it up to
David,
I have a working DECmate III I could try your images on.
Tom
On Sun, 13 Mar 2022, 4:20 am David Schmidt via cctech, <
cct...@classiccmp.org> wrote:
> I have some disks that look like they're from a DECmate II computer,
> standard RX50K drives. The disk images all look like they're a mix
The rack on the left has a DG NOVA 2 and the rack on the right may be a DG
NOVA 1200. Sadly I am in Australia so shipping is prohibitively expensive.
Hopefully these systems find a good new home.
Tom
On Sun, 13 Mar 2022, 8:27 am Nigel Johnson Ham via cctalk, <
cctalk@classiccmp.org> wrote:
>
11, 2022 at 8:03 AM Tom Hunter via cctalk
> wrote:
> > As there is no real cctalk traffic other than test messages I thought I
> > post something a bit more interesting. Here is a short video of my fully
> > restored DEC H500 Computer Lab with an 8-bit counter implementatio
As there is no real cctalk traffic other than test messages I thought I
post something a bit more interesting. Here is a short video of my fully
restored DEC H500 Computer Lab with an 8-bit counter implementation
including reset:
https://www.youtube.com/watch?v=57xU3Xqnqx4
Enjoy
Tom Hunter
P.S.
Hi Rod,
The "*.dsk" format is just a file extension. What utility created the RX50
disk images?
Tom
On Wed, Feb 23, 2022 at 10:29 AM Rod Smallwood via cctalk <
cctalk@classiccmp.org> wrote:
> Hi
>
> Well I have had a huge response to my request.
>
> I am unsure as to if I have defined the
Hi Paul,
At first I have replaced the bearings in the original two 10" fans in the
top of my LAB-8/e rack hoping to reduce the noise substantially.
The new bearings did not noticeably improve the noise levels.
After a few days of suffering through the noise I decided to replace them
with modern
You could try: http://www.jrfmagnetics.com/
Tom
On Wed, Feb 9, 2022 at 3:06 PM Gary Oliver via cctalk
wrote:
> On 2/8/22 14:14, Wayne S via cctech wrote:
> > Searched a lille bit for Western Magnetics. Here’s a site that has some
> surplus heads, even a western magnetics onebut probably not
There is a nice looking IBM 129 keypunch on Ebay for what I think is a very
reasonable "buy it now" price of US$1799:
https://www.ebay.com/itm/333898748391
Shipping to Australia would be horrendous otherwise I would have bought it.
Best regards
Tom Hunter
ch with Anders Magnusson, but got no reply yet.
>>
>> Tom
>>
>> On Sun, Jan 9, 2022 at 11:36 PM Will Cooke via cctalk <
>> cctalk@classiccmp.org> wrote:
>>
>>>
>>>
>>> > On 01/09/2022 9:10 AM Tom Hunter via cctalk
>>> wrote:
022 at 11:36 PM Will Cooke via cctalk <
> cctalk@classiccmp.org> wrote:
>
>>
>>
>> > On 01/09/2022 9:10 AM Tom Hunter via cctalk
>> wrote:
>> >
>> >
>> > The original "Portable C Compiler" by S. C. Johnson (also known as
>>
I have tried to get in touch with Anders Magnusson, but got no reply yet.
Tom
On Sun, Jan 9, 2022 at 11:36 PM Will Cooke via cctalk
wrote:
>
>
> > On 01/09/2022 9:10 AM Tom Hunter via cctalk
> wrote:
> >
> >
> > The original "Portable C Compiler" by
The original "Portable C Compiler" by S. C. Johnson (also known as "pcc")
had functional support for the Data General Nova. Could somebody please
point me to this original implementation?
There is a modern C99 version of this compiler maintained by Anders
Magnusson at: http://pcc.ludd.ltu.se/
While restoring and repairing a Data General Nova 2/10 I found a bad
bipolar PROM on the CPU board. The PROM has open-collector outputs and is
organized as 32 words by 8 bits. It appears that one of the open-collector
driver transistors is faulty (but it could also be that a fuse has
"healed").
I just started working on a Data General NOVA 2/10 which is in quite
reasonable cosmetic condition, but has a number of problems.
The system comes with 8 kwords plus 16 kwords of core boards and a
"Cassette I/O" board and the CPU board.
After reforming the "man sized" caps and verified the power
"Houston Computer Museum" ... I wouldn't call this a "museum". The
condition of the stuff is fitting for a garbage tip. It is a disgrace.
On Thu, Jul 22, 2021 at 6:50 AM Al Kossow via cctalk
wrote:
>
> https://www.facebook.com/groups/2103793056560583/permalink/3118441161762429/
>
>
Hi Jos,
Resoldered how?
The wires are _very_ thin (I guess 0.1 mm or thinner - think of human hair)
and they are covered with some form of high-temperature lacquer which you
would have to remove first. Also the dimensions of all this stuff is
_tiny_. There is just no space to poke anything in to
<
cctalk@classiccmp.org> wrote:
>
>
>
> -- Original Message --
> From: "Tom Hunter via cctalk"
> To: "General Discussion: On-Topic and Off-Topic Posts"
>
> Sent: Monday, 19 Jul, 2021 At 06:33
> Subject: DEC PDP-8/e H212 core mat re
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