Re: Software used for diagrams in DEC documentation

From	legalize+jeeves@mail.xmission.com (Richard)
Newsgroups	comp.sys.dec, comp.os.vms
Subject	Re: Software used for diagrams in DEC documentation
Date	2011-04-28 00:34 +0000
Organization	multi-cellular, biological
Message-ID	<ipacn4$cka$3@news.xmission.com> (permalink)
References	<b5453b29-7e9d-472a-9fc8-b0d4e24ee3f1@34g2000pru.googlegroups.com> <ip4d1c$bpm$1@Iltempo.Update.UU.SE> <ip4p3s$qts$2@news.xmission.com> <ip5pct$ovk$1@Iltempo.Update.UU.SE>

Cross-posted to 2 groups.

Show all headers | View raw

[Please do not mail me a copy of your followup]

Johnny Billquist <bqt@softjar.se> spake the secret code
<ip5pct$ovk$1@Iltempo.Update.UU.SE> thusly:

>On 2011-04-25 14:29, Richard wrote:
>> [Please do not mail me a copy of your followup]
>>
>> I'd love to get my hands on one.  I got an LA30 and it would be great
>> to have the companion CRT model.
>
>If I could locate any, it would be in Sweden. Probably not too practical 
>from where ever you might live anyway... :-)

I bought a PLATO terminal and local compute system from the UK.  It
was pretty pricey, but it was unique enough to warrant the expense.
However, I think for DEC video terminals I should only be looking
overseas as an absolute last resort; they made enough of these (VT05)
for the US market that I should have a better chance of finding one in
the states.

>> The limit to the number of vectors you can have is based on how
>> quickly you can transmit to the terminal.  Basically you have to do
>> active refresh with dynamic vectors and at 9600 baud, that's not a lot
>> of vectors.
>
>You do not need to do active refresh on the one vector, or am I 
>remembering that wrong?

According to the User's Manual, pg. 1-9,
<http://bitsavers.org/pdf/tektronix/401x/070-1647-00_4014_UsersMan_Nov79.pdf>

	"Write-Thru.  A display writing operation that prevents
	information from storing as it is being written, yet does not
	change the viewing status of previously stored information.  Once
	Write-Thru is enabled, information being written must be
	"refreshed" by the computer (or peripheral) to be useful.
	Intensity of written data depends on the refresh rate and the
	Write-Thru adjustment on the right side of the keyboard.
	Write-Thru can be used in either Alpha or Graph modes.  When in
	Write-Thru Alpha Mode, the Terminal automatically increases its
	maximum writing speed from the normal 1000 characters per second
	to 4000 characters per second."

>> I never needed to supply any fill characters when drawing vectors, but
>> it could be because we typically had 300 baud connections.
>
>Heh. That could be the reason. At 4800 bps, you need several fillers if 
>you go from one end of the screen to the other.

Interesting... I'll need to remember that as I'm not going to be
hooking these up over 300 baud lines :-).
-- 
"The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download
 <http://legalizeadulthood.wordpress.com/the-direct3d-graphics-pipeline/>

      Legalize Adulthood! <http://legalizeadulthood.wordpress.com>

Back to comp.sys.dec | Previous | Next — Previous in thread | Next in thread | Find similar

Thread

Software used for diagrams in DEC documentation urbancamo <mark@wickensonline.co.uk> - 2011-04-19 01:26 -0700
  Re: Software used for diagrams in DEC documentation ChrisQ <meru@devnull.com> - 2011-04-19 12:58 +0100
    Re: Software used for diagrams in DEC documentation Jan-Erik Soderholm <jan-erik.soderholm@telia.com> - 2011-04-19 14:00 +0200
    Re: Software used for diagrams in DEC documentation "John Reagan" <johnrreagan@earthlink.net> - 2011-04-19 08:42 -0400
      Re: Software used for diagrams in DEC documentation ChrisQ <meru@devnull.com> - 2011-04-19 16:55 +0100
        Re: Software used for diagrams in DEC documentation billg999@cs.uofs.edu (Bill Gunshannon) - 2011-04-19 16:07 +0000
          Re: Software used for diagrams in DEC documentation urbancamo <mark@wickensonline.co.uk> - 2011-04-19 12:54 -0700
            Re: Software used for diagrams in DEC documentation ChrisQ <meru@devnull.com> - 2011-04-19 22:27 +0100
              Re: Software used for diagrams in DEC documentation John Wallace <johnwallace4@yahoo.co.uk> - 2011-04-19 15:29 -0700
                Re: Software used for diagrams in DEC documentation Paul Sture <paul.nospam@sture.ch> - 2011-04-20 08:14 +0200
                Re: Software used for diagrams in DEC documentation ChrisQ <meru@devnull.com> - 2011-04-22 12:11 +0100
                Re: Software used for diagrams in DEC documentation Paul Sture <paul.nospam@sture.ch> - 2011-04-22 15:09 +0200
                Re: Software used for diagrams in DEC documentation John Wallace <johnwallace4@yahoo.co.uk> - 2011-04-23 03:32 -0700
                Re: Software used for diagrams in DEC documentation Paul Sture <paul.nospam@sture.ch> - 2011-04-25 11:07 +0200
              Re: Software used for diagrams in DEC documentation Hans Bachner <Hans@Bachner.priv.at> - 2011-04-19 23:55 +0000
              Re: Software used for diagrams in DEC documentation Paul Sture <paul.nospam@sture.ch> - 2011-04-20 06:38 +0200
              Re: Software used for diagrams in DEC documentation urbancamo <mark@wickensonline.co.uk> - 2011-04-20 00:54 -0700
                Re: Software used for diagrams in DEC documentation seasoned_geek <roland@logikalsolutions.com> - 2011-04-21 11:08 -0700
      Re: Software used for diagrams in DEC documentation Marc Van Dyck <marc.gr.vandyck@invalid.skynet.be> - 2011-04-23 22:03 +0200
        Re: Software used for diagrams in DEC documentation Paul Sture <paul.nospam@sture.ch> - 2011-04-24 07:24 +0200
          Re: Software used for diagrams in DEC documentation "Richard B. Gilbert" <rgilbert88@comcast.net> - 2011-04-24 09:20 -0400
            Re: Software used for diagrams in DEC documentation Johnny Billquist <bqt@softjar.se> - 2011-04-24 09:49 -0700
              Re: Software used for diagrams in DEC documentation legalize+jeeves@mail.xmission.com (Richard) - 2011-04-25 02:30 +0000
                Re: Software used for diagrams in DEC documentation glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2011-04-25 02:40 +0000
                Re: Software used for diagrams in DEC documentation Johnny Billquist <bqt@softjar.se> - 2011-04-24 23:07 -0700
                Re: Software used for diagrams in DEC documentation koehler@eisner.nospam.encompasserve.org (Bob Koehler) - 2011-04-25 08:15 -0500
                Re: Software used for diagrams in DEC documentation Johnny Billquist <bqt@softjar.se> - 2011-04-25 10:58 -0700
                Re: Software used for diagrams in DEC documentation koehler@eisner.nospam.encompasserve.org (Bob Koehler) - 2011-04-25 15:25 -0500
                Re: Software used for diagrams in DEC documentation moroney@world.std.spaamtrap.com (Michael Moroney) - 2011-04-25 20:54 +0000
                Re: Software used for diagrams in DEC documentation legalize+jeeves@mail.xmission.com (Richard) - 2011-04-25 21:25 +0000
                Re: Software used for diagrams in DEC documentation glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2011-04-26 04:59 +0000
                Re: Software used for diagrams in DEC documentation kludge@panix.com (Scott Dorsey) - 2011-04-26 10:11 -0400
                Re: Software used for diagrams in DEC documentation legalize+jeeves@mail.xmission.com (Richard) - 2011-04-28 00:15 +0000
                Re: Software used for diagrams in DEC documentation legalize+jeeves@mail.xmission.com (Richard) - 2011-04-25 16:01 +0000
                Re: Software used for diagrams in DEC documentation Johnny Billquist <bqt@softjar.se> - 2011-04-25 11:03 -0700
                Re: Software used for diagrams in DEC documentation legalize+jeeves@mail.xmission.com (Richard) - 2011-04-25 21:29 +0000
                Re: Software used for diagrams in DEC documentation Johnny Billquist <bqt@softjar.se> - 2011-04-25 23:40 -0700
                Re: Software used for diagrams in DEC documentation legalize+jeeves@mail.xmission.com (Richard) - 2011-04-28 00:34 +0000
                Re: Software used for diagrams in DEC documentation Johnny Billquist <bqt@softjar.se> - 2011-04-27 20:42 -0700
                Re: Software used for diagrams in DEC documentation MetaEd <metaed@gmail.com> - 2011-04-26 08:19 -0700
                Re: Software used for diagrams in DEC documentation Johnny Billquist <bqt@softjar.se> - 2011-04-26 09:46 -0700
                Re: Software used for diagrams in DEC documentation MetaEd <metaed@gmail.com> - 2011-04-27 12:19 -0700
                Re: Software used for diagrams in DEC documentation legalize+jeeves@mail.xmission.com (Richard) - 2011-04-28 00:24 +0000
                Re: Software used for diagrams in DEC documentation "Richard B. Gilbert" <rgilbert88@comcast.net> - 2011-04-25 08:02 -0400
              Re: Software used for diagrams in DEC documentation Paul Sture <paul.nospam@sture.ch> - 2011-04-25 10:53 +0200
          Re: Software used for diagrams in DEC documentation koehler@eisner.nospam.encompasserve.org (Bob Koehler) - 2011-04-25 08:14 -0500
            Re: Software used for diagrams in DEC documentation Paul Sture <paul.nospam@sture.ch> - 2011-04-25 23:13 +0200
  Re: Software used for diagrams in DEC documentation helbig@astro.multiCLOTHESvax.de (Phillip Helbig---undress to reply) - 2011-04-19 20:21 +0000
    Re: Software used for diagrams in DEC documentation   VAXman-  @SendSpamHere.ORG - 2011-04-19 21:15 +0000

csiph-web