void Received( void )
   {
      bool post = first;
      first = false;

      for( int i=0; i<axisCt; i++ )
      {
         uint32 s = stat[i].Read();
         if( s != newStat[i] )
            post = true;
         newStat[i] = s;
      }

      if( post ) sem.Put();
   }