INT 10 - VESA SuperVGA BIOS - GET SuperVGA INFORMATION
AX = 4F00h
ES:DI -> 256-byte buffer for SuperVGA information (see below)
Return: AL = 4Fh function supported
AH = status
00h successful
01h failed
SeeAlso: AX=7F00h

Format of SuperVGA information:
Offset  Size    Description
00h  4 BYTEs   signature ('VESA')
04h    WORD    VESA version number
06h    DWORD   pointer to OEM name
"761295520" for ATI
0Ah  4 BYTEs   capabilities
0Eh    DWORD   pointer to list of supported VESA and OEM video modes
(list of words terminated with FFFFh)
12h 238 BYTEs  reserved

See also: 104F01

104F00 - VESA SuperVGA BIOS - GET SuperVGA INFORMATION