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Table 79

Format of VESA SuperVGA mode information:
Offset	Size	Description	)
 00h	WORD	mode attributes (see #00080)
 02h	BYTE	window attributes, window A (see #00081)
 03h	BYTE	window attributes, window B (see #00081)
 04h	WORD	window granularity in KB
 06h	WORD	window size in KB
 08h	WORD	start segment of window A (0000h if not supported)
 0Ah	WORD	start segment of window B (0000h if not supported)
 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 (graphics) or characters (text)
 14h	WORD	height in pixels (graphics) or characters (text)
 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 (see #00082)
 1Ch	BYTE	size of bank in KB
 1Dh	BYTE	number of image pages (less one) that will fit in video RAM
 1Eh	BYTE	reserved (00h for VBE 1.0-2.0, 01h for VBE 3.0)
---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
		bit 0: color ramp is programmable
		bit 1: bytes in reserved field may be used by application
---VBE v2.0+ ---
 28h	DWORD	physical address of linear video buffer
 2Ch	DWORD	pointer to start of offscreen memory
 30h	WORD	KB of offscreen memory
---VBE v3.0 ---
 32h	WORD	bytes per scan line in linear modes
 34h	BYTE	number of images (less one) for banked video modes
 35h	BYTE	number of images (less one) for linear video modes
 36h	BYTE	linear modes: size of direct color red mask (in bits)
 37h	BYTE	linear modes: bit position of red mask LSB (e.g. shift count)
 38h	BYTE	linear modes: size of direct color green mask (in bits)
 39h	BYTE	linear modes: bit position of green mask LSB (e.g. shift count)
 3Ah	BYTE	linear modes: size of direct color blue mask (in bits)
 3Bh	BYTE	linear modes: bit position of blue mask LSB (e.g. shift count)
 3Ch	BYTE	linear modes: size of direct color reserved mask (in bits)
 3Dh	BYTE	linear modes: bit position of reserved mask LSB
 3Eh	DWORD	maximum pixel clock for graphics video mode, in Hz
 42h 190 BYTEs	reserved (0)
Note:	while VBE 1.1 and higher will zero out all unused bytes of the buffer,
	  v1.0 did not, so applications that want to be backward compatible
	  should clear the buffer before calling


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