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The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

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Windows 3.1 includes a Super VGA driver providing screen resolution of
800x600 at 16 colors. This driver is based on the VGA driver source code.
 
This driver supports the 16 color 800x600 modes of most Super VGA display
adapters, and is capable of automatically detecting the correct mode
number.
 
When the Super VGA driver loads, it checks the [SUPERVGA.DRV] section of the
SYSTEM.INI file for a mode number specfied by the svgamode entry. The entry
takes a single decimal value specifying the video mode number. If the driver
finds a value in SYSTEM.INI, it attempts to put the adapter into that mode.
 
If the mode switch fails, or if a value is not specified in SYSTEM.INI, the
Super VGA driver will attempt to automatically detect the correct mode
number. If it detects one, it writes this value out to SYSTEM.INI. If it
does not, the driver fails to load, and the user is returned to the DOS
prompt.
 
Users with adapters not detected by the Super VGA driver must specify the
correct (decimal) mode number in the [display] section of SYSTEM.INI.
 
Microsoft recommends that current users of 16 color 800x600 drivers switch
to the driver included in Windows 3.1, since it contains new features and
performance optimizations.
 
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