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diff --git a/src/mem/ruby/slicc_interface/AbstractChip.hh b/src/mem/ruby/slicc_interface/AbstractChip.hh
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+
+/*
+ * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * $Id$
+ *
+ * Description: Common base class for a machine chip.
+ *
+ */
+
+#ifndef ABSTRACT_CHIP_H
+#define ABSTRACT_CHIP_H
+
+#include "Global.hh"
+#include "NodeID.hh"
+#include "RubyConfig.hh"
+#include "L1Cache_Entry.hh"
+#include "Address.hh"
+#include "Vector.hh"
+
+class Network;
+class Sequencer;
+class StoreBuffer;
+class ENTRY;
+class MessageBuffer;
+class CacheRecorder;
+class TransactionInterfaceManager;
+
+template<class ENTRY> class CacheMemory;
+
+class AbstractChip {
+public:
+  // Constructors
+  AbstractChip(NodeID chip_number, Network* net_ptr);
+
+  // Destructor, prevent from being instantiated
+  virtual ~AbstractChip() = 0;
+
+  // Public Methods
+  NodeID getID() const { return m_id; };
+  Network* getNetwork() const { return m_net_ptr; };
+  Sequencer* getSequencer(int index) const { return m_L1Cache_sequencer_vec[index]; };
+  TransactionInterfaceManager* getTransactionInterfaceManager(int index) const { return m_L1Cache_xact_mgr_vec[index]; };
+  void setTransactionInterfaceManager(TransactionInterfaceManager* manager, int index) { m_L1Cache_xact_mgr_vec[index] = manager; }
+
+  // used when CHECK_COHERENCE is enabled.  See System::checkGlobalCoherence()
+  virtual bool isBlockExclusive(const Address& addr) const { return false; }
+  virtual bool isBlockShared(const Address& addr) const { return false; }
+
+  // cache dump functions
+  virtual void recordCacheContents(CacheRecorder& tr) const = 0;
+  virtual void dumpCaches(ostream& out) const = 0;
+  virtual void dumpCacheData(ostream& out) const = 0;
+
+  virtual void printConfig(ostream& out) = 0;
+  virtual void print(ostream& out) const = 0;
+
+  // pulic data structures
+  Vector < CacheMemory<L1Cache_Entry>* > m_L1Cache_L1DcacheMemory_vec;
+  Vector < CacheMemory<L1Cache_Entry>* > m_L1Cache_L1IcacheMemory_vec;
+  Vector < CacheMemory<L1Cache_Entry>* > m_L1Cache_cacheMemory_vec;
+  Vector < CacheMemory<L1Cache_Entry>* > m_L1Cache_L2cacheMemory_vec;
+  Vector < CacheMemory<L1Cache_Entry>* > m_L2Cache_L2cacheMemory_vec;
+
+  // added so that the prefetcher and sequencer can access the L1 and L2 request queues
+  Vector < MessageBuffer* > m_L1Cache_optionalQueue_vec;
+  Vector < MessageBuffer* >m_L1Cache_mandatoryQueue_vec;
+
+  // TSO storebuffer
+  Vector < StoreBuffer* > m_L1Cache_storeBuffer_vec;
+
+  // TM transaction manager
+  Vector < TransactionInterfaceManager* >  m_L1Cache_xact_mgr_vec;
+
+protected:
+
+  // Data Members (m_ prefix)
+  NodeID                 m_id;            // Chip id
+  Network*               m_net_ptr;       // Points to the Network simulator
+  Vector < Sequencer* >  m_L1Cache_sequencer_vec; // All chip should have a sequencer
+
+
+};
+
+// Output operator declaration
+ostream& operator<<(ostream& out, const AbstractChip& obj);
+
+// ******************* Definitions *******************
+
+// Output operator definition
+extern inline
+ostream& operator<<(ostream& out, const AbstractChip& obj)
+{
+  obj.print(out);
+  out << flush;
+  return out;
+}
+
+#endif //ABSTRACT_CHIP_H
+