INT 10H 4f01H - Query SuperVGA Mode Information

 Expects: AX    4f01H
          CX    VESA/SVGA Video Mode number (may also be std modes 00-13H)
          ES:DI Addr of buffer to receive an SvgaModeInfoRec
 Returns: AX    VESA status: AH=0 means successful (else failed)
                             AL=4fH means function supported
          ES:DI buffer contains returned data (if successful)
    Info: Obtains information about the capabilities, resolution, memory
          access model, etc. for a particular SuperVGA video mode.

          The buffer at ES:DI must be 256 bytes long (though only the first
          29 bytes are defined).  See SvgaModeInfoRec for a layout of the
          returned information.

   Notes: ■ VESA implementations may not return the entire data structure.
            Be sure to check bit 1 of the byte at offset 0.

See Also: SVGA
          VESA/SVGA BIOS Services