INT 10 - VIDEO - FLAT-PANEL - FUNCTION SUPPORT FLAG                             
	AX = 1EFEh
	ES:DI -> DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address. buffer for bitmap of supported functions
		(set to all zeros before calling)
Return: ES:DI buffer updated with mask of supported functions
Index:	installation check;flat-panel display support
SeeAlso: AX=1E00h,AX=1E06h