Int 10 Fn 4E02  - Vesa Xga Bios Extensions - Return Xga Mode Information   [V]

   AX = 4E02h
   CX = Video mode
   DX = XGA handle
   ES:DI -> 256 byte buffer for mode information (see #0071)

Return: AL = 4Eh if function supported
   AH = status
       00h  function successful
       else error code

See Also: AX=4E00h,AX=4E01h

Format of XGA mode information:
Offset Size    Description (Table 0071)
 00h   WORD    attributes of the mode (see #0072)
 02h   WORD    bytes per logical scanline
 04h   WORD    horizontal resolution in pixels
 06h   WORD    vertical resolution in scanlines
 08h   BYTE    character Width in pixels
 09h   BYTE    character Height in pixels
 0Ah   BYTE    number of planes
 0Bh   BYTE    bits per pixels
 0Ch   BYTE    memory model (see #0073)
 0Dh   BYTE    number of Image Pages
 0Eh   BYTE    number of Red bits
 0Fh   BYTE    bit position of Red bit field
 10h   BYTE    number of Green bits
 11h   BYTE    bit position of Green bit field
 12h   BYTE    number of Blue bits
 13h   BYTE    bit position of Blue bit field
 14h   BYTE    number of Reserved bits
 15h   BYTE    bit position of Reserved bit field
 16h 235 BYTEs reserved

Bitfields for XGA mode attributes:
Bit(s) Description (Table 0072)
 0 set if mode is supported
 1 reserved
 2 output is supported by the BIOS
 3 reserved
 4 if set this is a graphics mode (VGA registers inactive, XGA active),
     if clear this is a text mode (VGA registers active, XGA inactive)

(Table 0073)
Values for XGA video memory model:
 00h   Text Mode
 01h   CGA graphics
 02h   Hercules graphics
 03h   4-planar graphics
 04h   Packed Pixel
 05h   Non-chain 4, 256 color
 06h   Direct Color
 07h   YUV-24