a "USB-to-5.25" drive? I have a couple 3.5
> > versions of those - maybe the power to motor the 5.25 is too much for
USB? :D
> ).
There are several USB to floppy tools that interface to floppies at a low
level and which can be used to read/write images. This is one:-
https:/
and scroll down there is an ASR33 as the console of MU5, one of Manchester
Universities Experimental Computers. This thing ran 24 hours a day..
>
> Jon
Dave
/groups/vintagecomputerswapmeet/posts/81591725341583
87/
but if you don't want to do this and are interested contact me off list..
Dave
G4UGM
Hasn't he promised to give his money away...
Dave
> -Original Message-
> From: Sellam Abraham via cctalk
> Sent: Thursday, August 29, 2024 7:55 PM
> To: General Discussion: On-Topic and Off-Topic Posts
>
> Cc: Wayne S ; Sellam Abraham
>
> Subject: [cctalk]
I don't think you can make sensible prediction. Look Apple I prices.
The last documented sale was 2010 and $30k. I would say its desirable, so if
two people fight who knows what it might get too.
On the other hand, if only one person bids it could flop. I think this is
highly unlikely....
r winblows or linux) if it was like Dos/win3.1, where you
> boot do
> a dos prompt, it would be nice if I could bring up the graphical interface
> with &,
> and then bring up a second onemaybe a different, one or with different
> options...especially now that I have multiple display adapters, a win 3.1
> like UI
> on one monitor, and a current UI on on the other monitor, then from either
> drag
> application windows to a third monitor.
You can have Multiple Desktops ...
Dave
t; to unify the OS variants, but it didn't quite make it (though I think W2K
> moved
> the graphics subsystem into the kernel for better performance), and Windows XP
> was the first unified OS and the first with a 64 bit variant.
>
> Jim
>
Dave
p.s. I once went to talk t
in got renamed to 2000 and DEC
Alpha support was dropped. I may have some NT5 Beta CDs in the loft.
Dave
> Dave Wise
>
> From: Fred Cisin via cctalk
> Sent: Monday, July 29, 2024 5:21 PM
> To: Murray McCullough via cctalk
> Cc: Fred Cisin
&
I included every DOS I could find freely available, including the above
mentioned
PC-DOS, FreeDos, Caldera OpenDos and PTS DOS - but I've never seen any version
of
MS-DOS available like that!
Dave ::: https://dunfield.themindfactory.com ::: "Daves Old Computers"->Personal
aland
https://motat.nz/
there are some pictures of it on my one drive (if it asks you to sign in and
you don't wish to use an incognito window)
https://1drv.ms/f/s!Ag4BJfE5B3onlsxny71p3CPOQV4svA?e=aSdamK
in more recent times Tim Robinson built one...
https://www.meccano.us/differenti
..
.. and not to museums which need to make money to survive...
Dave
G4UGM
p.s. In the UK still trying to dispose of VAX Station 3100/30(Working), HP
Plotter(Working), AlphaServer 2100 (Does not power up)
Also some Q-Bus cards.
> -Original Message-
> From: Sellam Abraham
When I was more active in collecting/acquiring old system of indeterminate
state. I built a little gadget to do this automatically - so I could leave it
to do it's
thing overnight.
Dave ::: https://dunfield.themindfactory.com ::: "Daves Old Computers"->Personal
C/DOS compiler:
4,651 CC.COM
13,900 MCP.EXE \
24,258 MCCDVM.EXE > As Micro-C was designed to be easily
12,792 MCODVM.COM > portable, these tools make very little
3,479 MCCILIB.COM > use of library functions.
12,274 SLIN
080 that most developers didn't have a
tough time "figuring it out".
(and it didn't hurt that minicomputer pricing wasn't involved)
Dave
My own entry into the "microprocessor" design fray was something I called the:
C-FLEA
A very tiny/simple 16 bit CPU that wa
Bill Degnan wrote:
> Thanks Dave - It has been many years since I genned a N* disk. I don't
> always have success with the port assigning but eventually I get it to work.
Although my Altair was "fully expanded" when I first owned it, I was involved
with it quite some
interfaces, so perhaps the
DLV11-J type port but with current loop.
>
> Yes, I would like to use this put together a working qbus PDP11 using either
> 11/23 or 11/73 CPU, just for fun.
>
> Doug
Dave
he "Virtual Altair", do/experience what it
was was involved
in getting an OS up on a front-panel system when you didn't already have this
OS running!
Something you had to do in the first days, but few people today have done!
(other then list members or course)
I do have information about how to do this included with the emulater!
-Dave
d that awful white
> wire.
Mine was "used" and already assembled when I got it.
It had most of the final expansions - I added a few homebrew ones.
Did improve the power supply , and agree completely on the "white wire"
- I used mine LOTS - did much of my earliest software development on it!
-Dave
Horizon (Z80) - also does: Vector 1+
NorthStar DOS, CP/M
Heathkit H8 (8080)
Hdos, CP/M
Mil MOD8 (8008) - Canadian
Scelbi BASIC
Dunfield 6809 (6809) [my original portable]
My own CUBIX OS
There's more software - these are the main OS's and significant
-Dave
code).
This was very limited, and I soon replaced it with various homebuilt (mostly
8080 based) systems - at one point I managed to obtain some solenoid controller
reel-to-reel tape drives from a decomissioned lab - and built my own automatic
storage system (using some direct digital-to-tape methods I managed to get
working).
But the Altair was the first system I had with floppy disks and substantial
memory - and the first I could use for the kinds of things I had been doing
on the universities IBM 360 and PDP-11s - in other words a usable personal
computer!
Dave
Liam Proven wrote:
> It needs to have a microprocessor to qualify.
> ... No µP = not a PC.
Not entirely sure ...
http://dunfield.classiccmp.org/primitiv
Dave
used the system :-)
On an LCD TV - the gun didn't shoot! - LCD pixels tended not to be
scanned/refreshed the same
way, and are also slower - so whatever scan frequency might have been used
isn't detectable.
Dave ::: https://dunfield.themindfactory.com ::: "Daves Old Computers"->Personal
ersonally" had a a few full-rack systems in my
own basement (actually - Dining room - at least till I got married :-)
These induced a couple "Data General Novas", a few "DEC PDP-8's and
PDP-11's" and a few others - but I never really though of these
my Altair emulator (about 2003 IIRC), I made and included .NSI
(NorthStarImage)s of all the non-junk floppy disks I had at that time.
This included a couple "games" disks, and "Hunt The Wumpus" is there!
Dave Dunfield - https://dunfield.themindfactory.com
ot; we mean "Turing Complete Digital
Personal Computer" it is just a tad long winded to say so.
... and if we simply say "digital" which excludes many devices that still
includes the Abacus
Dave
Computers)
I also created an emulator for it as well - so you can experience using another
very
early system if you like...
Sometime later, Scelbi 8008 BASIC was ported to it (also in my archive) - this
has to
be one of the very earliest (notice I didn't say F-r-t :-) BASICs.
Dave
it wasn't anywhere
what it would become some years after that! - and I don't think it was
at all well known till MS-DOS (post IBM-PC).
But again, I don't claim to be:
(*)
X - marks the unknown
Spurt - a drip under pressure
.. and I don't claim to be an "unknown drip under pressure"
(I'll happily leave that honor to others in the group :-)
Dave
I case anyone is interested...
I've just passed on my "Mits Altair 8800" - this is a very historic system
from the 70s - it is:
First Personal Computer (long before IBM PC)
First S100 buss system
First system Bill Gates wrote code for (long before Microsoft)
I did write a pretty decent emul
a Honeywell badge on it. We never used it in
that manner, it had a papertape reader attached which was used to convert
output from Friden Flexowriters to Magtape for a Honeywell H3200.
Dave
therwise sorted.
I think the big question is, could it realistically be restored? Who would
actually want to do this if they don't own it and don't have any guaranteed
future rights.
These questions are why many Museums only accept unconditional donations,
but its also why people don't want to donate to museums as the future of the
objects can be uncertain.
>
>
> Christian
Dave
ith the IBM BookManager format and
> > > the tools to read it?
> > >
> >
> > Have you looked at http://kev009.com/wp/projects/boo2pdf/
>
> Sadly it doesn't work, and the source code has gone as well
Sorry Chuck, the source code does appear to be in github.
It looks like the "transmogrifier" in there might solve the problems I had with
images
>
> >
> > --chuck
> >
>
> Dave
Dave
ve any experience with the IBM BookManager format and
> > the tools to read it?
> >
>
> Have you looked at http://kev009.com/wp/projects/boo2pdf/
Sadly it doesn't work, and the source code has gone as well
>
> --chuck
>
Dave
nd the original IBM CUA documentation and want to convert it to some
> more modern, open format, but I am not having much luck...
>
It’s a problem with .boo files. Only IBM seem to understand the format.
You best bet would be the first app, but you will then need to fix the images
in the PDF.
hujia.104.cdn20.com
Sorry, my mistake - I meant the CCTALK archives at: classiccmp.org
Dave
--
--
Search "Dave's Old Computers" see "my personal" at bottom!
erface to CCTALK? I browse it
through
the ARCHIVE on CCTALK.COM - it's a web interface which presents "reply"
button
- but it doesn't work - so I have to cut/paste/edit the existing post and
send
it back by email
nothing. There
are two power bricks, one USB lead, one docking station. No stylus. Can't
remember when I last looked at these. Free collection from Manchester.
Dave
ot;double spaced" fonts - but in all other respects nothing
I've
used it on has been able to tell it's not an actual VT100!
(I'm sure there are better/graphical VT100 emulations "out there")
Dave
--
--
Search "Dave's Old Computers" see "my personal" at bottom!
provided.
If you care to, I included ASM88 (my 8008 cross assembler) so you can try
writing and running 8008 code!
-Be aware that MOD8.COM itself is pretty old and is 16-bit DOS software.
This means it WON'T run under modern Windows, but it does work well in
DosBox (I reco
Hi, this is "Dave Dunfield" - best known here for being the site owner of
"Daves Old Computers" and the author of "ImageDisk"
No longer have the email I used to use to access cctalk... (hence the
change)
Just in case anyone is interested:
I've been worki
> -Original Message-
> From: Guy Dunphy
> Sent: Thursday, November 16, 2023 9:54 PM
> To: General Discussion: On-Topic and Off-Topic Posts
> Subject: Re: [cctalk] Free to good home HP 7510a Photo Plotter - UK
>
> Hi Dave,
>
> I'm very interested,
the shutter but as you can see the sample palette comes out fine.
I don't know if it varies the brightness or the plot speed
>--
>Anders Nelson
>http://www.andersknelson.com/
Dave
> -Original Message-
> From: John Robertson via cctalk
> Sent: Thursday, November 16, 2023 5:17 PM
> To: Dave Wade G4UGM via cctalk
> Cc: John Robertson
> Subject: [cctalk] Re: Free to good home HP 7510a Photo Plotter - UK
>
> Location?
Like it says in the subj
powered by a 68000 and you can see the various boards in the pictures.
Dave
Silly me.
>
> Thanks,
> Chuck
Take a look at the link I pointed you too. There is code in there to list the
files on the tape and copy then to a PC disk. It will work with AWS files and
physical tapes.
Dave
3onhK8KXjiJ7iUXUgRs8A?e=qS99zs
which may help..
>
> https://www.garlic.com/~lynn/2003b.html#42
>
> Old VMFPLC may be just CMS TAPE DUMP under the covers.
>
> De
Dave
st of postage
Dave
Chuck,
Yes, I mean Monitor II-D.
No, CHM does not have a working 1311 drive. The need for Monitor II-D
is for the IBM 1620 Model 2 simulators being written. Monitor I does not
run correctly on a 1620 Model 2 when index registers are enabled and
used by a program.
Dave
On 8/28/2023 3:48
net Charge £1.60 £0.32
Lot Processing Fee £1.00£0.20
Total Price£49.20
So if I bid £32.00 I pay £49.20. Makes E-Bay look cheap
> - Ethan
Dave
e let me know if you have and IBM 1620 Model 2 software or manuals.
Thanks,
Dave Babcock
Mike,
Well sadly I have no PDP-8 parts. I do have a few bits of Q-BUS PDP-11.
Probably enough to build a complete 11.
I am also in the UK ….
Dave
From: Mike Katz
Sent: Saturday, August 19, 2023 3:53 PM
Cc: 'KenUnix' ; dave.g4...@gmail.com
Subject: Re: [cctalk] Re: Dispositio
Gentles,
The problem is I have stuff no one wants. Large plotter, dec writer in need of
repair, Large Alpha server
Suggestions?
Dave
> -Original Message-
> From: KenUnix via cctalk
> Sent: Saturday, August 19, 2023 10:14 AM
> To: General Discussion: On-Topic and Off
(a.k.a.,
Radiograph)
> technical pen will work. Those were commonly used in plotters, for
example I
> remember using a Calcomp plotter with one of those. And those are
obviously
> refillable, and available in any number of sizes. Not to mention great
drawing
> tools to have around -- I wonder where mine is.
>
> paul
Looking at the documents for the DMP-29 those need an adaptor
Dave
in by accident, and it knows which passwords match
which site URL so it won't put them in a phishing site
>
> ;)
>
> Sellam
Dave
you something is time critical so in
this case " expires in 24 hrs time.
>
> ;)
>
> Sellam
Dave
Bill,
There are moderated groups, but many don't want to use them. Not sure why,
delays in posting etc.
As most of the noxious people are consistent in posting ids some kill filters
can fix.
Dave
G4UGM
> -Original Message-
> From: Bill Gunshannon via cctalk
> Sent: Th
Dave
> -Original Message-
> From: Jim Brain via cctalk
> Sent: Tuesday, May 16, 2023 4:16 AM
> To: General Discussion: On-Topic and Off-Topic Posts
> Cc: Jim Brain
> Subject: [cctalk] ST-251 Data Recovery for Glenside Color Computer Club (GCCC)
>
> At the most rec
c-toe (noughts and crosses to the
English) program which displayed its output in patterns on the MK1 screen.
In 1951 he wrote a checkers/draughts program for the Mk1.
He also wrote the "love letters" program.
.. Turing was thinking about Chess but he couldn't fit it in the MK1
>
> paul
Dave
.
> 1966) used countless mentions of "computer tapes" in the 23rd century.
Yes, but Space 1999 still had slide rules..
>
> A lack of foresight on the part of the script writers?
>
> What can we predict for the year 2250?
>
> --Chuck
Dave
s.
>
> Zane
>
Our Honeywell H3200 had 1200BPI NRZI 7-track drives.
http://www.bitsavers.org/pdf/honeywell/datapro/70C-480-01_7404_Honeywell_200_2000.pdf
page 13 onwards... Needed chrome tape
Dave
keyboard. It changed my keyboarding style.
Welll whilst I didn't know this until yesterday, the IBM 2260 VDU had such a
keyboard. There is one for sale on E-Bay
https://www.ebay.com/itm/115685064067
and there are nice pictures of the keyboard.
Dave
from a computer...
So whilst I would love to continue to use floppies, in my experience it kills
any chance of getting anything to work...
.. and I think many of the issues are that the media is getting soft. Perhaps
baking would help?
Dave
t; with
> GW, as it's still bound by the specific characteristics of the drive head in
> use.
It depends. 1.2Mb drives write a narrower track so if you put in a 360 or 640
disk in that’s already been written and write to it, then existing data may not
be properly erased on a write.
So long as you only ever write on the 1.2MB drive its fine
>
> Jim
>
> --
> Jim Brain
> br...@jbrain.com
> www.jbrain.com
Dave
disk.
With one of these tools you read the flux transitions of the disk, so a
whole track and then sort the data out.
This reduces the risk of damaging the disk and the drive.
>
>
> Christian
Dave
John,
Win2003 had software raid. Does ghost see this?
Dave
> -Original Message-
> From: John Herron via cctalk
> Sent: 21 December 2022 20:27
> To: General Discussion: On-Topic and Off-Topic Posts
> Cc: John Herron
> Subject: [cctalk] Re: Win2K+3 on a Dell Poweredge
y. I secured a copy of the Corel Linux Starter Kit and want
> to
> load it into the Poweredge. For chips and pringles. I have other pre uefi
> boxes
> around but this is lying dormant. And 6 drives for my purposes is stupid. And
> heavy.
Dave
Chris,
We used to have two lists , cctech for on-topic & cctalk which mirrored cctech
and allowed off-topic, but the level off off-topic traffic was low, so if I
understand things we now only have one and it allows both on and off-topic..
Dave
> -Original Message-
> From:
statement that the DEC part is strange
and hard
> to find. So if that turns out to be barrier, faking the tach signal would
be a way
> to make the drive operational again.
The replacement board does not use the DEC part.
>
> Another approach would be a bit of mechanical work to fit a stock optical
> sensor. That would depend on having access to the needed machining
skills.
That is what this mod does
>
> paul
dave
.
>
> - Ethan
I suspect Jim Austin has one of the largest collections that's publicly
documented...
https://www.computermuseum.org.uk/
.. but many are very private about what they own
Dave
d. I did other Cascade programming in assembly, I
wrote my own instruction card for the system.
In my senior year, the facility switched over to using IBM System 3 equipment,
and I got to work with RPG, 8-inch diskettes, and 96-column cards.
Dave.
Sent from Mail for Windows
und because friends already had such things and would make stuff
for me...
Dave
>
> Sent from my iPhone
>
> > On Oct 11, 2022, at 11:17, Vincent Slyngstad via cctalk
> wrote:
> >
> > On 10/11/2022 10:48 AM, geneb via cctalk wrote:
> >> If someone wants to
st worked...
> The PDP-8S did have core memory, and for a bit serial computer, it was fairly
> fast.
>
For calculation, I believe the G-15 was fast. I can't believe any one would
seriously run a high level compiler on such a machine.
> Jon
Dave
.
Why does a modern OS need stuff built in?
Dave.
Sent from Mail for Windows
,_County_Clare
I checked on Google Maps and there is a big sign saying welcome to Boston
and little else, so I suspect a total lack of VT220's
Dave
G4UGM
>
> >
> > Looks like both of them are North of Boston, but one is like a 19 hour
> > drive away and one
I picked up a VT220 passing by some clean out a while ago.
Green phosphor, powers up and passes self test.
The keyboard has 3 broken function row keys, keycaps.
Free to pickup in North Andover.
Shipping would be heavy and awkward with the CRT.
Dave.
Sent from Mail for Windows
2: for a drive in that
position - all other wires are "straight through".
It looks as if some other signals is expected to behave differently when
the drive is jumpered as 1: (I've tried this with a couple of different
drives) - anyone know whats going on?
Dave
ly monitor this list, the best way to reach me is:
"Daves Old Computers" -> "Personal Site" -> "Contact"
Dave
--
--
Search "Dave's Old Computers" see "my personal" at bottom!
Selling my original 1975 "MITS Altair 8800", often described as the first
"personal computer" (6 years before the "IBM PC"). A real piece of
computing history!
Complete and fully functional, this machine boots and runs a couple
operating systems from the era.
Includes:
Main Altair 8800 system un
>
It was all handled in the package
> How would you know there were new messages in a particular file you were
> interested in? Would you have to open each file (or, perhaps look at its
> modified date) or was there a different interface used to actually read
> messages?
>
There were commands to list new updates since you last logged in.
> Thanks in advance :)
>
>
> Andrew
Dave
Folks,
I probably have some, and now I have found my ICL House Codes sheet I may even
be able to identify them.
However I won't be in the same country as my stock for a couple of weeks.
... and they are in the UK so getting them stateside may take some time.
Dave
G4UGM
> -
Jay,
Thanks for that, I hope its fixed,
Dave
G4UGM
> -Original Message-
> From: cctalk On Behalf Of jwest--- via
> cctalk
> Sent: 11 May 2022 13:18
> To: 'Tom Hunter' ; 'Adrian Stoness'
> ; cctalk-ow...@classiccmp.org
> Cc: 'General Discussi
le sometimes ASSUME that the dictation program also does so.
>
> An auto-corrupt could be dangerous.
It could, but I know of a couple of medical folks that use similar
technology. They say it is more accurate than their typing..
Dave
G4UGM
ly regretted that in the long run.
Dave.
Sent from Mail for Windows
. I
> am wondering what other hobbyists pay in order to gauge whether the price
> that a local recycler is asking for one (which was around
> $100) is fair.
If its working and boots up I would say that is very reasonable.
Dave
and was not
register compatible with IBM’s implementation.
Later IBM worked with National Semiconductor to release the TROPIC chipset that
was used by Madge and others.
Some info I found here: https://www.ardent-tool.com/NIC/TROPIC.html
Dave.
Date: Wed, 13 Apr 2022 20:25:25 +
From
Folks,
Does no one fancy a go at this. Had zero interest...
Dave
> -Original Message-
> From: dave.g4...@gmail.com
> Sent: 04 April 2022 12:29
> To: 'General Discussion: On-Topic and Off-Topic Posts'
>
> Subject: RE: AlphaServer 2100s available
>
> F
off-list please.
Dave
> -Original Message-
> From: cctalk On Behalf Of Antonio Carlini
> via cctalk
> Sent: 21 July 2020 20:58
> To: General Discussion: On-Topic and Off-Topic Posts
>
> Subject: AlphaServer 2100s available
>
> I have three AlphaServer 2100 s
family are safe, at least for
the time being.
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
t off....
Dave
G4UGM
(Now feeling guilty because what I have is neither catalogued or on display)
like this situation, make it pretty hard to maintain that
motivation.
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
ut just how common this actually is.
This is a fate that seems to befall most private collections.
That, combined with rodent infestations, rust, etc resulting from the
typical garage/barn/shed/basement storage that we've seen over and over,
has impacted my opinion of private collections.
ings of its own. It's not easy to do, but it
is possible. Encourage your friend!
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
front building that nobody lives in, in a downtown shopping
district, as distinguished from the typical private collection in a
garage, basement, etc.
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
access to a really fantastic set of machines, it might be a great thing
to sink one's teeth into. Contact me if interested!
Thanks,
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
opening a museum would be met wish such hostility,
from day one, I'd never have gone to the trouble. Even with my
less-than-rosy opinion of human nature, I never saw it coming.
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
r job, you're welcome to
come and help. Just give us a date and time.
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
On 3/16/22 16:56, Dave McGuire via cctalk wrote:
The LSSM is very interested in this machine for public display. It would
complement the museum's collection of PDP-11s and other 16 bit machines.
By "very interested", Mark means "is actively pursuing". Some of o
ore
information. Donations may be tax-deductible depending on your personal
tax situation.
Thank you for your consideration.
Thanks,
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
based on
an 11 networked into the system. That project was complicated by what it tried
to integrate, and took too long to build. It was overtaken by the simpler LAT
based products that DEC went forward with.
George Conant, Bob Rosenbaum, and Pete Nesbeda left the company and founded
Xyplex th
more parts than
necessary in some places to round out the quantity to the nearest price break.
At least it could be a starting point and might save a bit of time.
Cheers,
Dave
On Thursday, January 13, 2022, 02:46:54 PM CST, William Sudbrink via cctalk
wrote:
In response to my wife&#
p and running with CP-V, but was restricting public accounts due to
some issue with the account generation mechanism. I wonder if someone
associated with the Museum might potentially have access to some CP-V tapes or
images, even if the museum is closed.
Thanks in advance,
Dave
1 - 100 of 932 matches
Mail list logo
