[comp.graphics] ATI VGA Wonder, BGI drivers and pallette selection

lalonde@cs.dal.ca (Paul Lalonde) (07/26/89)

Hello,
	I've just aquired an ATI VGA Wonder card for my AT clone.  Does
anyone know where I can find a BGI driver for Turbo C that will let me use
the 800x600x256 colour mode?  Or failing a ready-written driver a specification
for the BGI so I can build one?

	Also, most of what I'm displaying is from a 24 bit RGB bitmap.  Can
anyone point me towards methods for choosing a pallette of 256 colours that
will yeild decent results?

	Thanks,
		Paul Lalonde


 Paul A. Lalonde	 UUCP: ...{uunet|watmath}!dalcs!dalcsug!lalonde
 Phone: (902)423-4748	 BITNET: 05LALOND@AC.DAL.CA			     

	"The only true law is that which leads to freedom"
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 Paul A. Lalonde	 UUCP: ...{uunet|watmath|utai}!dalcs!dalcsug!lalonde
 Phone: (902)423-4748	 BITNET: 05LALOND@AC.DAL.CA			     

	"The only true law is that which leads to freedom"

talvola@janus.berkeley.edu (Erik Talvola) (07/26/89)

In article <1989Jul26.103126.5154@cs.dal.ca> lalonde@cs.dal.ca (Paul Lalonde) writes:

   Hello,
	   I've just aquired an ATI VGA Wonder card for my AT clone.  Does
   anyone know where I can find a BGI driver for Turbo C that will let me use
   the 800x600x256 colour mode?  Or failing a ready-written driver a specification
   for the BGI so I can build one?

I would like to find out similar information.  I have an Orchid Prodesigner Plus
board (640x480x256, 800x600x256, 1024x768x16), and I would like to write a BGI
for it.  However, with the BGI tools from Borland, all they provide is a test
BGI file without any code in it - just a framework.  Since this board is basically
an enhanced VGA, it would be nice if there was source code available to the
regular VGA BGI file, and I should just be able to add to it.  If anyone has
such a thing, please let me know.

	   Also, most of what I'm displaying is from a 24 bit RGB bitmap.  Can
   anyone point me towards methods for choosing a pallette of 256 colours that
   will yeild decent results?

I have found that the 'fbquant' program in the Fuzzy Bitmap (available by
anonymous FTP from nl.cs.cmu.edu (128.2.222.56) in directory /usr/mlm/ftp)
is the best program for converting 24-bit files down to 256.  I use it all
the time to make 256-color GIF pictures from 24-bit ray-tracer output.  The
author is Michael Mauldin (mlm@cs.cmu.edu)

	   Thanks,
		   Paul Lalonde


    Paul A. Lalonde	 UUCP: ...{uunet|watmath}!dalcs!dalcsug!lalonde
    Phone: (902)423-4748	 BITNET: 05LALOND@AC.DAL.CA			     



--
---------------------------+
Erik Talvola               | "It's just what we need... a colossal negative 
talvola@cory.berkeley.edu  | space wedgie of great power coming right at us
...!ucbvax!cory!talvola    | at warp speed." -- Star Drek

NU113738@NDSUVM1.BITNET (07/28/89)

If you're looking for a BGI Driver for your wonder card, on Compuserve and
many bulletin boards, there is a really good driver system by... hmm, can't
remember his name, but someone wrote a full driver system for utilizing the
256 color capability.  I believe the author also has a ATI VGA Wonder.

If you can't find it around, I may be able to uucode it and send it too you
but look around for it first.  Many large BBS systems have it and I know
its in the Turbo C and Turbo Pascal borland forums on compuserve.

Jeff Bakke
NU113738@NDSUVM1.BITNET