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From: jpp@slxsys.UUCP (John Pettitt)
Newsgroups: comp.terminals
Subject: Re: Brain damage of a different color
Message-ID: <206@slxsys.UUCP>
Date: Fri, 18-Sep-87 16:46:31 EDT
Article-I.D.: slxsys.206
Posted: Fri Sep 18 16:46:31 1987
Date-Received: Sun, 20-Sep-87 19:56:59 EDT
References: <286@pan.UUCP>
Reply-To: jpp@slxsys.UUCP (John Pettitt)
Organization: Specialix Systems Ltd, London, U.K.
Lines: 31

In article <286@pan.UUCP> jw@pan.UUCP (Jamie Watson) writes:
>Esprit systems (some sort of successor to Hazeltine) make a terminal that
>is sort of almost ansi compatible, kind of.  . . . . 

>This terminal (I think it was called the 6515) supports one attribute on
>the screen without using magic cookies.  Exactly one.  Any one.  The real
>kicker is, you *change* which attribute it is by sending the ansi standard
>set attribute sequence!  So, you go somewhere on the screen, and write some
>underlined text.  Then, you go to some completely different place, and send
>the set bold attribute sequence.  Presto!  That underlined text that you
>wrote just turned into bold!  Of course, this works with blink, half bright
>and so on - my favorite is no-display.


The ADDS viewpoint had the same trick (they use the high bit in 
the video ram to signal an attribute).  The great thing about this
type of terminal is to paint the whole screen with the 'blank'
attribute set, then set normal and 'presto' instant display,
and since all users beleive that

	  display_speed == CPU_speed

who need's a (your favorite big cpu) anyway !  :-)



				
-- 
John Pettitt - G6KCQ, CIX jpettitt, Voice +44 1 398 9422, Discalimer applies ! 
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Remember: Bill Gates is the worlds greatest expert on Operating Systems :-)