INT 10 - Chips & Technologies Extended BIOS - EN/DISABLE ACCELERATOR SUPPORT

	AX = 5F53h
	BL = new support state
	    00h disable buffer/accelerator
	    01h enable buffer/acelerator
Return: AL = 5Fh if function supported
	    AH = status
		00h unsuccessful
		01h successful
SeeAlso: AX=5F50h,AX=5F51h,AX=5F54h