Format of VFOSSIL video mode data structure:
Offset	Size	Description	)
 00h	WORD	length of structure including this field
 02h	BYTE	mode characteristics
		bit 0: clear if MDA, set otherwise
		bit 1: graphics mode
		bit 2: color disabled (black-and-white)
 03h	BYTE	number of colors supported (1=2 colors, 4=16 colors, etc)
 04h	WORD	number of text columns
 06h	WORD	number of text rows
 08h	WORD	reserved
 0Ah	WORD	reserved
 0Ch	DWORD	reserved
SeeAlso: #00374,#00375