INT 10 - VIDEO - ALTERNATE FUNC SELECT (ATI,Tatung,Taxan) - ENHANCED FEATURES

	AH = 12h
	BH = 55h
	BL = subfunction
	    00h disable enhanced features
	    01h enable enhanced features
	    02h get status
		Return: AL = status flags (see #00027)
	    03h disable register trapping (CGA emulation)
	    04h enable register trapping
	    05h program video mode
		ES:BP -> video mode table (see #00028)
	    06h get mode table
		AL = video mode
		Return: ES:BP -> table suitable for mode AL
				  (and subfunc BL=05h) (see #00028)
			BP = FFFFh on error
			SI = 0000h (ATI Mach32)
Note:	the ATI Mouse driver (MOUSE.COM/MOUSE.SYS) uses subfunction 06h to get
	  the mode table for mode 03h, and then looks for a signature string
	  beginning within 32 bytes of the offset specified by the word at
	  ES:000Ch
SeeAlso: AH=FFh"Oak"
Index:	installation check;ATI video adapters