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From: richmond@astroplasma.berkeley.edu (Michael Richmond)
Newsgroups: comp.sys.ibm.pc.rt
Subject: Re: more than 16 levels of grey on a 5081 (megapel) using Xwindows
Message-ID: <22773@agate.BERKELEY.EDU>
Date: 8 Apr 89 01:37:34 GMT
References: <22690@shemp.CS.UCLA.EDU>
Sender: usenet@agate.BERKELEY.EDU
Reply-To: richmond@astroplasma.berkeley.edu.UUCP (Michael Richmond)
Organization: Dept of Astronomy, UC Berkeley
Lines: 20

In article <22690@shemp.CS.UCLA.EDU> wine@CS.UCLA.EDU () writes:
>We'd like to use our 5081 as a display device for images using Xwindows,
>but we can only get 16 levels of grey out of it.  Is there any way
>to get 256 levels of grey (hardware, and/or software)?  It's an awfully
>nice display, but we may have to get something else to do the job.
>
>--David Wine

   I have the same question here at the Astronomy Department at UC
Berkeley;  my experience (brief as it is) with the 5081 is that it
is just a (very large) PGA, since the PGA also has a palette of
256 out of 4096 colors and just 16 gray levers.  For the image processing
we do, we REALLY need 64 gray levels.  Any suggestions for possible
displays?

                Michael Richmond


--                                          Michael Richmond
"This is the heart that broke my finger."   richmond@astroplasma.berkeley.edu