Int 15 Fn 5301 - Advanced Power Management Specification - Connect Real- [p] AX = 5301h BX = 0000h (device ID of system BIOS) Return: CF clear if successful CF set on error AH = error code (02h,09h) (see AX=5300h) See Also: AX=5302h,AX=5303h,AX=5304h