American Megatrends Super Voyager LPX User Manual page 123

Super VGA Functions
The purpose of the VESA Super VGA specification is to propose a
common software interface to SVGA video adapters to provide a
simplified software access to advanced VGA products.
The VESA SVGA specification provides a set of functions that obtain
information about the capabilities and characteristics of a specific Super
VGA implementation, and control video mode initialization and video
memory access. The functions are provided as an extension to the VGA
BIOS video services accessed through INT 10h.
Video Environment Information
The VESA INT 10h BIOS Extension provides several functions to return
information about the video environment. These functions return system
level information as well as video mode specific details.
Function 00h returns general system level information, including an
OEM identification string. This function also returns a pointer to the
supported video modes.
Function 01h may be used by the application to obtain information about
each supported video mode.
Function 03h returns the current video mode.
Programming Support
The VESA INT 10h SVGA BIOS Extension provides several functions
to interface to different SVGA hardware implementations. The most
important of these is Function 02h, Set Super VGA video mode. This
function isolates the application from the complicated task of setting up a
video mode.
Function 05h provides an interface to the underlying memory mapping
hardware. Function 04h saves and restores a SVGA state without
knowing anything of the specific implementation.
Super Voyager LPX ISA Motherboard User's Guide