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diff --git a/src/mem/ruby/tester/CheckTable.cc b/src/mem/ruby/tester/CheckTable.cc
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+++ b/src/mem/ruby/tester/CheckTable.cc
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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.
+ */
+
+/*
+ * $Id$
+ *
+ */
+
+#include "CheckTable.hh"
+#include "Check.hh"
+#include "Map.hh"
+
+CheckTable::CheckTable()
+{
+  m_lookup_map_ptr = new Map<Address, Check*>;
+  physical_address_t physical = 0;
+  Address address;
+
+  const int size1 = 32;
+  const int size2 = 100;
+
+  // The first set is to get some false sharing
+  physical = 1000;
+  for (int i=0; i<size1; i++) {
+    // Setup linear addresses
+    address.setAddress(physical);
+    addCheck(address);
+    physical += CHECK_SIZE;
+  }
+
+  // The next two sets are to get some limited false sharing and cache conflicts
+  physical = 1000;
+  for (int i=0; i<size2; i++) {
+    // Setup linear addresses
+    address.setAddress(physical);
+    addCheck(address);
+    physical += 256;
+  }
+
+  physical = 1000 + CHECK_SIZE;
+  for (int i=0; i<size2; i++) {
+    // Setup linear addresses
+    address.setAddress(physical);
+    addCheck(address);
+    physical += 256;
+  }
+}
+
+CheckTable::~CheckTable()
+{
+  int size = m_check_vector.size();
+  for (int i=0; i<size; i++) {
+    delete m_check_vector[i];
+  }
+  delete m_lookup_map_ptr;
+}
+
+void CheckTable::addCheck(const Address& address)
+{
+  if (log_int(CHECK_SIZE) != 0) {
+    if (address.bitSelect(0,CHECK_SIZE_BITS-1) != 0) {
+      ERROR_MSG("Check not aligned");
+    }
+  }
+
+  for (int i=0; i<CHECK_SIZE; i++) {
+    if (m_lookup_map_ptr->exist(Address(address.getAddress()+i))) {
+      // A mapping for this byte already existed, discard the entire check
+      return;
+    }
+  }
+
+  Check* check_ptr = new Check(address, Address(100+m_check_vector.size()));
+  for (int i=0; i<CHECK_SIZE; i++) {
+    // Insert it once per byte
+    m_lookup_map_ptr->add(Address(address.getAddress()+i), check_ptr);
+  }
+  m_check_vector.insertAtBottom(check_ptr);
+}
+
+Check* CheckTable::getRandomCheck()
+{
+  return m_check_vector[random() % m_check_vector.size()];
+}
+
+Check* CheckTable::getCheck(const Address& address)
+{
+  DEBUG_MSG(TESTER_COMP, MedPrio, "Looking for check by address");
+  DEBUG_EXPR(TESTER_COMP, MedPrio, address);
+
+  if (m_lookup_map_ptr->exist(address)) {
+    Check* check = m_lookup_map_ptr->lookup(address);
+    assert(check != NULL);
+    return check;
+  } else {
+    return NULL;
+  }
+}
+
+void CheckTable::print(ostream& out) const
+{
+}