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List:       sunrescue
Subject:    [rescue] PERQs, was Re:  SPARCstation SLC connector pinout
From:       Dave McGuire <mcguire () neurotica ! com>
Date:       2022-07-19 21:06:01
Message-ID: a5a0aace-f2b1-4496-72c0-65d8799f7cd3 () neurotica ! com
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On 7/19/22 16:54, Skeezics Boondoggle wrote:
> Of course, being a PERQ nut during my impressionable years I'd grown up 
> hearing about the rumored "next generation" display (and custom RasterOp 
> chip) that Three Rivers Computer had been developing in the '80s but 
> never got to see one of the mythical beasts.B  I only recently discovered 
> this fascinating article about the challenges of developing their 
> original "Megascan" display:
> 
> http://archive.informationdisplay.org/Portals/InformationDisplay/IssuePDF/V04N01-1988%20January.pdf 
> <http://archive.informationdisplay.org/Portals/InformationDisplay/IssuePDF/V04N01-1988%20January.pdf>
> 
> (See "Case study: developing a 3000-line interactive CRT display" 
> starting on page 12.)
> 
> To sum up:B  4096 x 3300 x 1 @ 300dpi on a 19" Clinton tube, 72Hz 
> refresh, 1.5GHz data rate (pixel clock of 670ps).B  Shipped in 1986.  
> Yes, you read that correctly.

   We have a PERQ at LSSM.  The "three rivers" of Three Rivers Computing 
are within a couple of miles of there.  It has not yet been restored; 
feel free to take some vacation time and come work on it.

              -Dave

-- 
Dave McGuire, AK4HZ
New Kensington, PA
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