Was there a UNIBUS storage system that used a cassette player as the
storage device (like an old Panasonic or RadioShack cassette player),
rigged to send receive signals via a serial card connection. I.e. the
system would have one serial card for the terminal and another serial card
on a different port for the cassette player? It might have to load as if
it was a high-speed papertape but it in theory would work.
Bill
Hi all --
Recently picked up a DH11-AD and now I just need to track down an
appropriate bulkhead panel to go with it. Originally this would have been
the H317-B, I'm not sure if there were others that are directly compatible,
but if anyone has one lying around drop me a line!
Thanks!
- Josh
Charles Dickman <chd at chdickman.com> wrote:
> There are indications in the KDJ11-B processor spec on bitsavers that
> the M8190 could be used in a multiprocessor configuration. For
> example, bit 10 of the Maintenance Register (17 777 750) is labeled
> "Multiprocessor Slave" and indicates that the bus arbitrator is
> disabled. There is also section 6.6, "Cache Multi-Processor Hooks",
> that describes cache features that allow multiprocessor operation.
>
>Would it be as simple as connecting to 11/83 qbus together? And adding
> the proper software.
>
> Anybody ever heard of such a thing?
Such a system was put together and tested at DEC with the RSX group
(who did the PDP-11/74 multiprocessor work). I'm told that while it
worked, it wasn't terrible successful, and the project was abandoned.
I was given a gift of one of the CPU modules that was used in the test
and I might still have it around here. I can't recall for certain,
but I think the module required some ECOs to make it work in a
multi-processor configuration.
The person to ask about this, Brian McCarthy, is unfortunately no
longer with us. :-(
Alan Frisbie
I ran into a YouTube video, that it is 5 years old, titled "Ultrix-11
3.1 on an emulated PDP-11/73" and I found it very interesting.
It shows installation of Ultrix-11 under SIMH.? The fellow steps through
the installation process and appears to be quite knowable.
I wanted to replicate it but couldn't locate the *.tap file used in the
video that was an image of the bootable TK50 distribution.
Bitsavers and tuhs.org have Ultrix-11 files, but not the bootable tape
image.
Anyone know where the tape image is located?
Doug
I have a CDC 9427H drive ( https://i.imgur.com/Wn87MRb.jpg ) that is
absolutely desparate for a new home. It's quite likely over 80lbs, so
shipping would be problematic. I'm in Graham, WA.
It's free, it's lonely, and it's desparate for your gentle touch. Please
won't you think of the disk drives?
g.
--
Proud owner of F-15C 80-0007
http://www.f15sim.com - The only one of its kind.
http://www.diy-cockpits.org/coll - Go Collimated or Go Home.
Some people collect things for a hobby. Geeks collect hobbies.
ScarletDME - The red hot Data Management Environment
A Multi-Value database for the masses, not the classes.
http://scarlet.deltasoft.com - Get it _today_!
Is it still useful to linearize PDFs?
I've been scanning and PDFing manuals for 16 years, and I've been
linearizing them regularly. My understanding is that this made them
accessible on a page-by-page basis in Web browsers without requiring a
complete file download first. But given the increase in typical bandwidth
in 16 years, I wonder if this is still useful. It is an extra step, and it
does make the files somewhat larger.
Recommendations? Does linearizing confer any advantage locally once the
entire file is downloaded?
Thanks.
-- Dave
Hi all,
you're invited to the Update computer club[0] public lecture series
"Updateringar"[1]!
When: 2021-08-14, 19:00 CEST
Where: https://bbb.cryptoparty.se/b/upd-0mo-m2u-aq8
The Whirlwind I
The Whirlwind was a computer of the first generation built at the
servomechanisms lab at MIT. It was the first computer designed to be a
highly reliable part of a system, and to be controlled in real time,
rather than be a programmable calculator for scientific research. Its
interactive nature directly started a tradition of computer engineering
at MIT which includes the TX-0, TX-2 and DEC's PDP line of
minicomputers. Its role in a simulated air defense system led to the
development of the AN/FSQ-7 computer, the center piece of the SAGE
system. In my talk I will give the historical context in which Whirlwind
was designed and built, explain its architecture and block diagrams, go
into how it was built and how it evolved over its lifetime, and of
course show some simple demos in my emulator. Those who want to stick
around for a bit longer are encouraged to join me in a little hands-on
hacking session where we look at some original code, but also write our
own to get a feeling for what programming the Whirlwind is like.
Angelo Papenhoff (Humboldt University of Berlin)
The lecture is free and open to everyone.
Upcoming: 2021-09-11, 19:00: The evolution of TECO and EMACS ? hands-on
demo. Lars Brinkhoff (ICtech)
Hope to see you there,
Anke
[0] http://www.update.uu.se/index_eng.html
[1] https://www.update.uu.se/wiki/doku.php/projekt:updateringar
On Monday, August 16, 2021 at 14:20, Wayne Sudol wrote:
> Out of curiosity, is there a reason you do not use Acrobat for
> creating pdfs?
Primarily because I have not purchased a license for Acrobat. Also, when I
started scanning manuals ten years ago, Al Kossow recommended tumble, which
worked well. And with source available, I've been able to extend it to
give me finer control over some aspects of PDF production.
-- Dave
On Mon, 16 Aug 2021 at 23:21, Wayne Sudol via cctech
<cctech at classiccmp.org> wrote:
>
> Out of curiosity, is there a reason you do not use Acrobat for creating
> pdfs?
I have been making PDFs for at least 20 years now, probably more.
AFAIK I have _never_ used Acrobat to create them. I print from
LibreOffice to its PDF generator, or I use any random Mac OS X app as
under that OS all apps can output PDF -- PDF is the native rendering
format of Mac OS X.
I do not normally use Windows but I believe that most modern Win10
apps can save as PDF.
I mostly use Linux and there is no Acrobat for Linux. The reader app
was discontinued years ago and no longer works on most modern distros.
With considerable effort I have managed to start it inside a Docker
container but it's complex and difficult; normally I just use Xviewer
or Okular.
You ask as if Acrobat were the normal or default way to make PDF
files. I don't think that's been true for decades now.
P.S. Please bottom-post on mailing lists. Thunderbird, for instance,
runs on all major OSes and talks to Hotmail/Outlook.com just fine.
--
Liam Proven ? Profile: https://about.me/liamproven
Email: lproven at cix.co.uk ? gMail/gTalk/gHangouts: lproven at gmail.com
Twitter/Facebook/LinkedIn/Flickr: lproven ? Skype: liamproven
UK: +44 7939-087884 ? ?R (+ WhatsApp/Telegram/Signal): +420 702 829 053
Tickets and News Here:
https://www.kennettclassic.com/2nd-annual-kennett-classic-announced/
Located across the street from Kennett Classic's museum at the Garage
Community Center in downtown Kennett Square, PA (btwn Philadelphia and
Baltimore).
Classic Computing Workshop Hack-a-thon
If a day of vintage computer hacking sounds like fun, register to claim a
workspace for your vintage computing project. The Kennett Square area has
a lot of new hobbyists that would really benefit from the tutelage of
experienced CCTalk members interested in sharing their knowledge.
Exhibitors Show Their Stuff
Exhibitors wanted! This is your chance to show off your favorite
restoration project or your prized retro computer to the public. We have
had many visitors to Kennett Classic this year who expressed interest in
attending this event and are eager to experience how antique computers once
operated.
An Evening of Chiptunes and Computer Music
This year for Kennett Classic?s evening entertainment we have three
talented chiptune / waveform synthesizer music performers/bands.
Thanks for your support of this event.
Bill Degnan
vintagecomputer.netkennettclassic.com
