INT 15 U - AMIAmerican Megatrends, Inc.(American Megatrends, Inc.) A hardware, software and firmware company founded in 1985. PCI BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware.  The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. - v1.00.05.AX1 - ???
	AX = DA12h
	CL = subfunction
	    00h ???
	    01h	???
	    02h get ???
	    03h ???
	    04h ???
	???
Return: CF clear if successful
	    ???
	CF set on error
	    AH = error code (86h unsupported subfunction)
Desc:	??? performs various manipulations on system chipset registers
Notes:	subfunctions 00h and 01h are NOPs in protected and V86see Virtual-86 Mode modes due to
	  a test of MSW bit 0
	subfunctions 00h-02h always return success