INT 61 - Atari Portfolio - GET/SET POWER CONTROL                                
	AH = 26h
	AL = function
	    00h get state
	    01h set state
		DL = new state
		    00h normal power-down on low battery
		    01h no power-down, but display warning
		    02h no power-down, no warning on low battery
Return: AL = current/old state
SeeAlso: AH=00h"Portfolio",AH=24h"Portfolio",AH=28h"Portfolio"