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From: sdyer@bbncc5.UUCP (Steve Dyer)
Newsgroups: net.micro.pc
Subject: Re: New color card: 256 colors on a PC!
Message-ID: <393@bbncc5.UUCP>
Date: Tue, 24-Sep-85 12:04:37 EDT
Article-I.D.: bbncc5.393
Posted: Tue Sep 24 12:04:37 1985
Date-Received: Sat, 28-Sep-85 06:23:18 EDT
References: <7700013@prism.UUCP> <372@bbncc5.UUCP>
Organization: Bolt Beranek and Newman, Cambridge, MA
Lines: 16

> No, on a color composite video monitor or analog RGB display.  It's
> impossible to display more than 16 colors on an IBM-CGA-compatible
> monitor or 64 colors on an Enhanced Color Display: the RGB signals
> are digital, not analog, and there are only 4 separate inputs 
> (or 6, for the ECD).  

Um, I seem to have rushed in a bit quickly.  The AT&T board works
with composite video color monitors, but it also works (according
to InfoWorld's report and ima!johnl's private communication) on
digital IRGB displays by "flickering" the colors on and off to
simulate levels of brightness.  Good stuff, if it works (and doesn't
fry your monitor!)
-- 
/Steve Dyer
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