rem: KPrintF( "ActiavteXmit( %08lx, %ld )\n", userdata, portnum & 255 );
context: _ActivateXmit( APTR  userdata,	       ULONG portnum ){  // In the original CAMD, there is no port number :-(  KPrintF( "ActiavteXmit( %08lx, %ld )\n", userdata, portnum & 255 );  if( !CAMDv40 )  {    for( portnum = 0; portnum < MidiDeviceData.NPorts; ++portnum )    {      if( userdata == PortInfos[ portnum ].UserData )      {	break;      }    }    if( portnum == MidiDeviceData.NPorts )    {      return;    }  }  CallHook( &EMU10kxCamd->ActivateXmitFunc, (Object*) EMU10kxBase,	    portnum & 255 );}