INT 2F - METZTSR.COM - GET TIME OF LAST KEYBOARD ACTIVITY                       
	AX = A901h
	CF set
Return: CF clear if successful
	    AX:DX = 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. time at which INT 09 was last invoked
	CF set if not present
SeeAlso: INT 09,INT 1A/AH=00h