INT 2F - MS-DOS 7 kernel - BOOT LOGO SUPPORT???

	AX = 160Eh
	BL = subfunction
	    00h get ???
		AX = state of flag manipulated by subfn 04h and 05h
		    0000h clear
		    FFFFh set
		DX = ??? (0000h)
	    01h link in INT 10h??? handlers
	    02h unlink INT 10h??? handlers
	    03h ???
	    04h set ??? flag
	    05h clear ??? flag
Return: AX = 0000h if supported
	    ???
SeeAlso: AX=160Fh,AX=1611h,AX=1614h