dwight wrote on Thu May 7 08:45:07 CDT 2020:
> There are only a few winning and tying patterns for tic tac toe. There
> was a fellow that made a relay logic that could play tic tac toe and
> would win against a human of at least tie but never lose.
Here's my version of tic tac toe in TTL logic:
Paul Koning wrote:
>> The 1971 Unix Programmer's Manual mentions their 11/20 had 24 KB
>> (surely KW?) memory rather than 28KW.
> I would assume kW. In the PDP11 world we didn't normally speak of
> bytes or kbytes, certainly not for memory and often not elsewhere either.
The PDP-11 Unix
Steve Malikoff wrote:
> It states that their 11/20 had a KS-11 memory management unit, was that
> mandatory for running v1 Unix on an 11/20?
I case-insensitively grepped for 'ks.*11' in the Github repository here:
https://github.com/DoctorWkt/unix-jun72
and I didn't see a mention.
> The 1971
According to this page that Dennis Ritchie wrote, the original PDP-11
they used was indeed an 11/20 but it was before there were PDP-11 model
numbers:
https://www.bell-labs.com/usr/dmr/www/picture.html
And, of course, the PDP-7 Unix development came before the PDP-11 version :)
Cheers, Warren
I'm building my own 8-bit CPU from TTL chips, and this caused me to think:
how were 32-bit minis built in the late 70s and early 80s? In particular,
how was the ALU built? I know about the 74181 4-bit ALU, and I know (from
reading A Soul of a New Machine) that PALs were also used.
Did companies
All, I received this request from Matthew who isn't subscribed to either
the TUHS or cctalk lists. He knows how to read the lists archives. Many
thanks for any help you can provide.
Cheers, Warren
- Forwarded message from Matthew Whitehead -
Date: Mon, 15 Oct 2018 08:25:39 -0400
From:
The "old Unix" mailing list has been running since October 1995:
http://minnie.tuhs.org/pipermail/tuhs/
Cheers, Warren
OK, so I don't have a real VT100, so I'm accessing an old 4.3BSD system
with xterm and LXTerminal terminal emulators on Linux. Last night, for a
laugh, I ran vttest from the 1980s and the terminal emulators performed
woefully.
Which raises the question, are there any _good_ VT100 terminal
Camiel wrote:
> What would the requirements for the system be? How often would it need to
> be online?
I added an answer here:
https://github.com/DoctorWkt/4bsd-uucp#joining-the-growing-uucp-network
For central sites (like decvax) that had a lot of connectivity, you will
be expected to run them
Hi all, as part of the upcoming 50th anniversary of Unix in mid-2019,
a bunch of people are working to rebuild the mid-1980s uucp/Usenet
network using (real/simulated) period-accurate systems. To make things
easier, we are simulating the dialup lines too.
Details of the (nearly) turnkey software
Hi all, some of you may know me as the guy who runs the Unix Heritage
Society and the archive of old Unix systems:
https://minnie.tuhs.org/cgi-bin/mailman/listinfo/tuhs,
http://www.tuhs.org and http://www.tuhs.org/Archive
Mid-year 2019 is the 50th anniversary of the creation of Unix and I've
been
All, I had a look at the docs on V6 Unix. This doc:
http://minnie.tuhs.org/cgi-bin/utree.pl?file=V6/usr/doc/start/start
describes a way to install from tape, but it seems like it does
a block copy of a tape image to the disk.
Also, in
Hah, the file
http://www.tuhs.org/Archive/PDP-11/Tools/Tapes/Vtserver/v7_standalone.tar.gz
has the source code for the standalone tools including boot and vtboot.pdp.
So, given a working V7 environment, you should be able to rebuild these
and possibly make them work in a V6 environment.
All, I messed around with VHDL last year. I found this a great book
to learn VHDL best practices:
http://www.gstitt.ece.ufl.edu/courses/eel4712/labs/free_range_vhdl.pdf
The book is free but you can also buy a printed copy at
http://freerangefactory.org/
I started with GHDL:
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