INT 10 - VIDEO - XGA - READ DMQS DATA
        AX = 1F01h
        ES:DI -> user buffer for return data (call AX=1F00h for size)
Return: AL = 1Fh if function supported
        user buffer filled with DMQS data, see below.
Note:   not supported on the original IBM XGA, only on XGA-NI (non-interlaced)
          and later models.
SeeAlso: AH=1Bh,AX=1F00h,AX=3000h

Format of DMQS buffer:
Offset  Size    Description
 00h    WORD    offset (in bytes) to DMQS data for next XGA instance
 02h    BYTE    slot number
 03h    BYTE    XGA implementation function level identifier
 04h    BYTE    XGA implementation resolution level identifier
 05h    WORD    vendor identifier - identifies card vendor
 07h    WORD    vendor defined field
 09h    WORD    XGA adapter I/O register base address
 0Bh    WORD    XGA coprocessor register base address
                (paragraph--multiply by 10h to get physical address)
 0Dh    WORD    1 Megabyte system video memory aperture
                0000h if not allocated
                (Multiply by 100000h to get physical address)
 0Fh    WORD    4 Megabyte system video memory aperture
                0000h if not allocated
                (multiply by 100000h to get physical address)
 11h    WORD    video memory base address
                (multiply by 100000h to get physical address)
 13h    WORD    composite ID of the attached display
 15h    BYTE    amount of video memory available, in multiples of 256K bytes
 16h    DWORD   alternate XGA coprocessor register base address.  0 = none.
 1Ah    var     DMQS Data for further XGA Instances (as above)
Note:   "Instances" refers to the capability of having up to 8 XGA
          adapters in one computer.

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