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