INT 10 - Chips & Technologies '64300' 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. - GET CLOCK SPEED
	AX = 5F03h
	BH = 00h (get default memory clock)
Return: AL = 5Fh if function supported
	    AH = status
		00h unsuccessful
		01h successful
		    BL = clock speed in MHz
SeeAlso: AX=5F02h"64300",AX=5F04h"64300"