INT 16 - HUNTER 16 - CONTROL EMERGENCY BREAKOUT                                 
	AH = 23h
	AL = new state of breakout (00h enabled, nonzero disabled)
	BX = 0708h
	CX = 0910h
	DX = 1112h
Return: AL = 00h if successful
Desc:	Enables or disables the emergency breakout feature, where the
	  Hunter 16 at power on checks whether the X and P keys are pressed.
	  If so the machine will boot rather than continue the running program
SeeAlso: AH=22h"HUNTER"