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Mail Archives: djgpp/1994/06/17/17:20:50

Date: Fri, 17 Jun 94 14:46:38 -0600
From: Clifford T. Matthews <iclone!ctm AT cs DOT unm DOT edu>
To: djgpp AT sun DOT soe DOT clarkson DOT edu
Subject: "S3 86C911" driver?
Cc: Cotton Seed <monolith.mit.edu!cottons AT cs DOT unm DOT edu>,
Mat Hostetter <skyclad.lcs.mit.edu!mat AT cs DOT unm DOT edu>

Hi Folks,

We're putting color support into Executor and the folks who are doing  
the color additions already have much of color running fine on their  
development system.  They use the default driver and everything works  
fine.

Executor/DOS-color doesn't work on *our* system.  We have a Dell  
system with an "S3 86C911" based video card.  We don't have much  
documentation on the card, but we do have a pamphlet called "Video  
Software Support Documentation Update" that talks about drivers for  
various popular programs (I guess different programs require  
different drivers -- yahoo).  In the pamphlet is a table called  
"Graphics Modes"

Resolutions and		Hexadecimal Mode Number		Video Mode
Colors
300 x 200; 4		4h, 5h				standard
320 x 200; 16		Dh				standard
320 x 200; 256		13h				standard
640 x 200; 2		6h				standard
...
640 x 480; 16		12h				standard
640 x 480; 256		69h, 101h			extended
...
800 x 600; 256		6Bh, 103h			extended
...
1024 x 768; 256		6Dh, 105h			extended

All the entries in the table with "extended" in the Video Mode column  
have a footnote that says "Requires video drivers".

Nowhere do they appear to claim that they are SVGA compliant, only  
VGA compliant with the ability to do these other modes with the  
drivers that are supplied on their floppy.

The experimental version of Executor that works on the development  
system with the default DJGPP driver pops the monitor into 800 x 600  
; 256 mode, which is a resolution or video card can trivially handle  
(we run it in 800 x 600 ; 65536 mode under NEXTSTEP all the time).

So I'm guessing that 640 x 400 x 16 colors would work, but higher  
ones won't, without a special driver.  Would any of the supplied go32  
drivers support this video card?  It strikes me as really weird that  
a LocalBus machine (i.e. a relatively new computer) wouldn't support  
SVGA, but I don't really know much about PCs.

	--Cliff

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