Category: power management

INT 15 - Advanced Power Management v1.0+ - CONNECT REAL-MODE INTERFACE

	AX = 5301h
	BX = device ID of system BIOS (0000h)
Return: CF clear if successful
	CF set on error
	    AH = error code (02h,05h,07h,09h) (see #00473)
Note:	on connection, an APM v1.1 or v1.2 BIOS switches to APM v1.0
	  compatibility mode until it is informed that the user supports a
	  newer version of APM (see AX=530Eh)
SeeAlso: AX=5302h,AX=5303h,AX=5304h