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C:/temp/src/j2k/QNX4/Train/Segment.cpp

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#ifndef __J2K__Train__Segment_CPP__
#define __J2K__Train__Segment_CPP__

Segment::Segment()
{
  SegmentID = 1;
  SetSegmentID( SegmentID );
}


int Segment::mask( int bit )
{
 int Pow = 1;

 for( int i = 0; i < bit; i++ ) { 
   Pow = Pow * 2;
 }

 return Pow; 
}


int Segment::isOccupied()
{
  int  Occupied;
  char Output[100];  //  Output to the VT100 terminal.
  char Num[10];
 
  Port_Value = inp(Port_Address);
  Occupied   = Port_Value & ( mask( (SegmentID - 1) % 8 ) );
 
  itoa( SegmentID, Num, 10 );
  strcpy( Output, "" );
  strcat( Output,"Segment " );
  strcat( Output, Num );

/*
  if ( Occupied == 0 ) {
    strcat(Output, " CLEAR.");
    DEBUG(Output);
  } else { 
    strcat(Output, " OCCUPIED.");
    DEBUG(Output);
  }
*/

  return ( Occupied == 0 );
}

void Segment::setSegmentID( int ID )
{
  SegmentID = ID;
  Port_Address = 0x188;

  if ( SegmentID > 8 ) {
    Port_Address++;     // 0x189
  }
}

int Segment::getSegmentID() {
  return SegmentID;
}

void Segment::setNext( int ID ) {
  Next = ID;
}

int Segment::getNext() {
  return Next;
}

void Segment::setPrev( int ID ) {
  Previous = ID;
}

int Segment::getPrev() {
  return Previous;
}

#endif

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