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AX = 4E02h CX = Video mode DX = XGA handle ES:DI -> 256 byte buffer for mode information (see #00073)
Return:
AL = 4Eh if function supported AH = status 00h function successful else error code
Format of XGA mode information: Offset Size Description (Table 00073) 00h WORD attributes of the mode (see #00074) 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 #00075) 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 00074) 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 00075) 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
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