diff --git a/Source/Core/Core/Src/HW/CPUCompare.cpp b/Source/Core/Core/Src/HW/CPUCompare.cpp
new file mode 100644
index 0000000000..37d9e470eb
--- /dev/null
+++ b/Source/Core/Core/Src/HW/CPUCompare.cpp
@@ -0,0 +1,50 @@
+// Copyright (C) 2003-2008 Dolphin Project.
+
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, version 2.0.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License 2.0 for more details.
+
+// A copy of the GPL 2.0 should have been included with the program.
+// If not, see http://www.gnu.org/licenses/
+
+// Official SVN repository and contact information can be found at
+// http://code.google.com/p/dolphin-emu/
+//  Sets up and maintains interprocess communication to make it possible
+//  to easily compare any two cpu cores by running two instances of DolphinHLE and
+//  comparing them to each other.
+//
+
+#ifndef _CPUCOMPARE_H
+#define _CPUCOMPARE_H
+
+#include "Common.h"
+
+namespace CPUCompare
+{
+        // start the server
+        void StartServer();
+
+        // connect as client
+        void ConnectAsClient();
+
+        // stop
+        void Stop();
+
+        // sync
+        int Sync();
+
+        // IsEnabled
+        bool IsEnabled();
+
+        // IsServer
+        bool IsServer();
+
+        void SetBlockStart(u32 addr);
+}
+
+#endif
\ No newline at end of file