INT 10 - SOLLEX SuperVGA - GET EXTENSIONS INFO
        AX = 7F00h
Return: AL != 7Fh if not supported
        AL = 7Fh if supported
            AH = status
                00h successful
                    ES:DI -> info structure (see below)
                01h failed

Format of info structure:
Offset  Size    Description
 00h    DWORD   pointer to VESA function dispatch table
 04h    DWORD   pointer to SOLLEX function dispatch table
 08h    DWORD   pointer to VESA SuperVGA info (see AX=4F00h)
 0Ch    DWORD   pointer to mode info structure table, consisting of
                alternating ResInfo (see below) and VESA mode information
                (see AX=4F01h) blocks, terminated with an FFFFh word
 10h    DWORD   pointer to font info structure table (see below)
 14h    WORD    high resolution crystal frequency in Hz (0000h = not present)
 16h    DWORD   pointer to ASCIZ ID string
 1Ah    DWORD   pointer to timeout reset table
                array of bytes, each a multiple of the minimum time increment
 1Eh    WORD    minimum time increment in timer ticks
 20h    BYTE    inverse options supported
                bit 0: inverse supported
                bits 1-7: reserved
 21h    BYTE    normal color value
 22h    BYTE    inverse color value
 23h    WORD    port to be accessed for normal/inverse settings
 25h    WORD    type of interface chip (currently undefined)
 27h    WORD    program operational mode
                bits 1-0: 00 no preference
                          01 terse (minimum detail in program messages)
                          10 verbose
                          11 use menus if supported, verbose mode otherwise
                bits 7-2: reserved
 29h    WORD    SOLLEX specification version
 2Bh    WORD    version of VESA/SOLLEX implementation
 2Dh    DWORD   offset to relocatable portion of SOLLEX extensions (for CONFIG)
 2Eh    DWORD   offset to unused section of the extensions ROM
 31h 16 BYTEs   reserved
Note:   all DWORD pointers initially require segment fixups; if the segment
          is 0000h, it should be changed to the returned ES, otherwise it
          may be assumed to be correct

Format of ResInfo:
Offset  Size    Description
 00h    WORD    16-bit mode number
 02h    WORD    adapter type (00h VGA, 01h EGA, 02h CGA, 03h MDA)
 04h    WORD    display info (see AX=7F01h/BL=01h)
 06h    DWORD   pointer to video parameter table
 0Ah    BYTE    replacement entry in master Video Parameter
 0Bh    BYTE    mode requested for mode set by BIOS
 0Ch    DWORD   pointer to LoadReg table
 10h    BYTE    index into table of clock values (see below)

Format of font info table [array] entry:
Offset  Size    Description
 00h    BYTE    required font height
 01h    BYTE    parameter to load text mode font
 02h    BYTE    parameter to load graphics mode font

Values for clock value index:
 00h    25 MHz
 01h    28 MHz
 02h    PCLK
 03h    31.5 MHz (VESA 640x480)
 04h    reserved
 05h    16 MHz (EGA)
 06h    PCLK
 07h    24 MHz (EGA)
 08h    25 MHz
 09h    28 MHz
 0Ah    36 MHz
 0Bh    45 MHz (for 1024x768)
 0Ch    80 MHz
 0Dh    40 MHz
 0Eh    65 MHz
 0Fh     1 MHz (for powerdown)