INT 15,40 - Read / Modify Profiles (convertible only)

	AH = 40h

	AL = 00 - return system profile in CX,BX
	     01 - modify system profile
	     CX,BX = profile info


	AL = 02 - return internal modem profile in BX


	AL = 03 - modify internal modem profile
	     BX = profile info