INT 10 - Chips & Technologies '65530' BIOS - SET CLOCK

	AX = 5F02h
	BH = what to set
	    02h dot clock
		BL = new clock speed (see #00180)
	    03h memory clock
		BL = new clock speed (see #00180)
	    04h set power-down register
		BL = new value for power-down register (bits 3-0 only)
	    06h (404 clock chip) set control register
		BL = new vlaue for control register (bits 5-0 only)
	    06h (404A/B/B-ES clock chips) set control register PWRDN1
		BL = new value for control register
	    07h (404A/B/B-ES clock chips) set control register PWRDN1
		BL = new value for control register
	    FFh default dot and memory clocks
Return: AL = 5Fh if function supported
	    AH = status
		00h unsuccessful
		01h successful
SeeAlso: AX=5F01h,AX=5F02h"64300",AX=5FA0h,#00184