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From: robk@cpqhou.uucp (Rob Kiesler)
Newsgroups: comp.sys.ibm.pc.misc
Subject: Re: 1024 X 768 VGA
Message-ID: <1990Dec01.201916.28071@cpqhou.uucp>
Date: 1 Dec 90 20:19:16 GMT
References: <Nov.27.18.03.02.1990.18329@paul.rutgers.edu>
Organization: Compaq Computer Corporation
Lines: 22

in article <Nov.27.18.03.02.1990.18329@paul.rutgers.edu>, chain@paul.rutgers.edu (Chain Lee) says:
> 
> 
> Does anyone know whether there is a VGA card that supports non-interlaced
> 256 color 1024X768 mode (using 8-bit pixel) and uses linear mapping of 
> its video memory at high memory address (above 1M, rather than a window
> between 0xa000 - 0xbfff)? 
> 
Yep, sounds exactly like IBM's new XGA graphics card. Unfortunately, it's
only currently available on the latest high-end IBM MCA machines(I forget
the model numbers). As for ISA cards, I believe that WD/Paradise and Video-7
have high-res non-interlaced VGAs, but I am not sure if the frame buffer 
can be mapped above 1 M. Does anybody know about this? If the cards do support
this, is the access to the frame buffer paged, or can the entire contents
of video memory be accessed linearly (in 386 protected mode environments)?


Rob Kiesler
Compaq Computer

"Is that a real poncho, or is that a Sears(TM) poncho?"
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