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. - SET REFRESH RATE
	AX = 5F05h
	BL = video mode number
	BH = refresh rate to set (see #00182)
		bit 7:	=0 program new clock and CRT parametes
			=1 keep current parameters
Return: AL = 5Fh if function supported
	    AH = status
		00h unsuccessful
		01h successful
SeeAlso: AX=5F04h"64300"