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Re: Software used for diagrams in DEC documentation

Cross-posted to 2 groups.

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On 2011-04-27 17:34, Richard wrote:
> [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]
>>>
>>> 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."

Ah! Thanks for the refresher. Yes, you're right. It just draws a line 
that immediately disappears again. I'm starting to remember details. :-)

>>> 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 :-).

You'll notice when you run, if nothing else. Your vectors will be 
"truncated", when it starts processing the next command before the 
previous one had time to complete.

	Johnny

-- 
Johnny Billquist                  || "I'm on a bus
                                   ||  on a psychedelic trip
email: bqt@softjar.se             ||  Reading murder books
pdp is alive!                     ||  tryin' to stay hip" - B. Idol

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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

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