Format of VESA VBE 2.0 protected-mode table:
Offset	Size	Description	)
 00h	WORD	offset (within table) of protected-mode code for Function 5
		  (Set Window)
 02h	WORD	offset of protected-mode code for Function 7 (Set Disp Start)
 04h	WORD	offset of protected-mode code for Function 9 (Set Primary
		  Palette)
 06h	WORD	offset (within table) of list of I/O ports and memory locations
		  for which I/O privilege may be required in protected mode
		  (0000h if no list) (see #04085)
 08h	var	code and optional port/memory list