INT 10 - VESA SuperVGA BIOS - GET SuperVGA MODE INFORMATION
AX = 4F01h
CX = SuperVGA video mode
ES:DI -> 256-byte buffer mode information (see below)
Return: AL = 4Fh function supported
AH = status
00h successful
01h failed
SeeAlso: AX=4F02h

Format of mode information:
Offset  Size    Description
00h    WORD    mode attributes
bit 0: mode supported
bit 1: optional information available
bit 2: BIOS output supported
bit 3: set if color, clear if monochrome
bit 4: set if graphics mode, clear if text mode
02h    BYTE    window A attributes
bit 0: exists
bit 1: readable
bit 2: writable
bits 3-7 reserved
03h    BYTE    window B attributes (as for window A)
04h    WORD    window granularity in K
06h    WORD    window size in K
08h    WORD    start segment of window A
0Ah    WORD    start segment of window B
0Ch    DWORD   -> FAR window positioning function (equivalent to AX=4F05h)
10h    WORD    bytes per scan line
---remainder is optional for VESA modes in v1.0/1.1, needed for OEM modes---
12h    WORD    width in pixels
14h    WORD    height in pixels
16h    BYTE    width of character cell in pixels
17h    BYTE    height of character cell in pixels
18h    BYTE    number of memory planes
19h    BYTE    number of bits per pixel
1Ah    BYTE    number of banks
1Bh    BYTE    memory model type
00h text
01h CGA graphics
02h HGC graphics
03h 16-color (EGA) graphics
04h packed pixel graphics
05h "sequ 256" (non-chain 4) graphics
06h direct color (HiColor, 24-bit color)
07h YUV
08h-0Fh reserved for VESA
10h-FFh OEM memory models
1Ch    BYTE    size of bank in K
1Dh    BYTE    number of image pages
1Eh    BYTE    reserved (0)
---VBE v1.2+---
1Fh    BYTE    red mask size
20h    BYTE    red field position
21h    BYTE    green mask size
22h    BYTE    green field size
23h    BYTE    blue mask size
24h    BYTE    blue field size
25h    BYTE    reserved mask size
26h    BYTE    reserved mask position
27h    BYTE    direct color mode info
28h    BYTE    reserved (0)

See also: 104F00

104F01 - VESA SuperVGA BIOS - GET SuperVGA MODE INFORMATION