MPPOpen

Load .MPP driver

returns Error Code; 0=no error

MPPOpen first checks whether the .MPP driver has already been loaded; if

it has, MPPOpen does nothing and returns noErr. If MPP has not been loaded,

MPPOpen attempts to load it into the system heap. If it succeeds, it then

initializes the driver's variables and goes through the process of dynamically

assigning a node ID to that Macintosh.

Returns: an operating system Error Code.

noErr (0) No error

portInUse (-97) Port B is already in use

portNotCf (-98) Port B not configured for AppleTalk

Notes: On any Macintosh later than the 128K, it also loads the .ATP driver and

NBP code into the system heap.