[TUHS] Unix Circuit Design System

Michele Ghisolfo ghisolfo.m at gmail.com
Sat Jan 2 01:45:20 AEST 2016

Yes, but earlier you pointed out that it does not emulates two wheels
of the terminal.  Since I have never used "draw" nor any Tektronix
terminal I don't know what was the purpose of the wheels and how they
are used by the program.  So I thought that, if "draw" heavily relies
on such feature, xterm might not suffice.

2016-01-01 15:31 GMT+01:00 Clem cole <clemc at ccc.com>:
> Xterm can emulate a Tek terminal.
> Sent from my iPhone
>> On Jan 1, 2016, at 8:58 AM, Michele Ghisolfo <ghisolfo.m at gmail.com> wrote:
>> Thank you!  I think I'll tamper with it a bit, when I have time.  With
>> regards to
>> the lack of wheel emulation in xterm, I think it wouldn't be too difficult to
>> write a terminal emulator with the set of tek functions and codes used
>> by "draw".
>> I'll try as soon as possible!
>> 2016-01-01 0:13 GMT+01:00 Warren Toomey <wkt at tuhs.org>:
>>> Ah, it's in the archive at
>>> http://www.tuhs.org/Archive/Applications/Circuit_Design/
>>> Cheers, Warren
>>>> On 1 January 2016 8:52:34 am AEST, Clem Cole <clemc at ccc.com> wrote:
>>>> Funny you should ask....
>>>> I had the last known virgin copy of that UCDS a few years ago, which we
>>>> managed to save.  Dennis declared it part of V7 (just a little late being
>>>> distributed), which we promptly sent to Warren, who has the source in his
>>>> archives.    Note it uses a tektronix 40xx terminal as the native screen.
>>>> It's been years since I used it, but I may be able to answer a few
>>>> questions.  I suspect the biggest issue with trying to use with xterm
>>>> emulation is that lack of the two wheels that the tek terminals had.
>>>> Good luck,
>>>> Clem
>>>> On Thu, Dec 31, 2015 at 1:20 PM, Michele Ghisolfo <ghisolfo.m at gmail.com>
>>>> wrote:
>>>>> Hello all!
>>>>> While I was reading the article "A Research UNIX Reader:  Annotated
>>>>> Excerpts
>>>>> from the Programmer's Manual" from Douglas McIlroy, I learnt of a set of
>>>>> utilities for designing electronic circuits.  Here is a brief quote of
>>>>> this
>>>>> article:
>>>>> "CDL (v7 pages 60-63)
>>>>> Although most users do not encounter the UNIX Circuit Design System, it
>>>>> has long
>>>>> stood as an important application in the lab.  Originated by Sandy Fraser
>>>>> and
>>>>> extended by Steve Bourne, Joe Condon, and Andrew Hume, UCDS handles
>>>>> circuits
>>>>> expressed in a common design language, cdl.  It includes programs to
>>>>> create
>>>>> descriptions using interactive graphics, to lay out boards automatically,
>>>>> to
>>>>> check circuits for consistency, to guide wire-wrap machines, to specify
>>>>> combinational circuits and optimize them for programmed logic arrays
>>>>> (Chesson
>>>>> and Thompson).  Without UCDS, significant inventions like Datakit, the
>>>>> 5620 Blit
>>>>> terminal, or the Belle chess machine would never have been built.  UCDS
>>>>> appeared
>>>>> in only one manual, v7."
>>>>> I looked it up on the 7th Edition's Manual and I haven't found references
>>>>> of
>>>>> this system.  I also searched a v7 system image downloaded from TUHS and
>>>>> got no
>>>>> results.  However I got some references of this system in USENET
>>>>> archives.  In
>>>>> particular, two hierarchies, net.draw and after net.ucds were dedicated
>>>>> to it.
>>>>> Apparently two of the binaries of the system were called "draw" and
>>>>> "wrap".  I
>>>>> also found a manual of a similar system which I suppose is the UCDS
>>>>> descendant
>>>>> in the 1st Edition of Plan 9.  This is the link of the document:
>>>>> http://doc.cat-v.org/plan_9/1st_edition/cda/
>>>>> However that edition of Plan 9 is not publicly released and I could not
>>>>> find
>>>>> it in following editions.  But since v7 Unix is available, I hope it may
>>>>> be possible to get hold of an older release at least.
>>>>> Does anyone have any information?
>>>>> Thank you in advance!
>>>>>    --- Michele
>>> --
>>> Sent from my Android phone with K-9 Mail. Please excuse my brevity.

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