diff --git a/components/interpreter/interpreter.cpp b/components/interpreter/interpreter.cpp
index b64369e709..0b636092c3 100644
--- a/components/interpreter/interpreter.cpp
+++ b/components/interpreter/interpreter.cpp
@@ -28,22 +28,6 @@ namespace Interpreter
                 return;
             }
 
-            case 1:
-            {
-                int opcode = (code>>24) & 0x3f;
-                unsigned int arg0 = (code>>16) & 0xfff;
-                unsigned int arg1 = code & 0xfff;
-
-                std::map<int, Opcode2 *>::iterator iter = mSegment1.find (opcode);
-
-                if (iter==mSegment1.end())
-                    abortUnknownCode (1, opcode);
-
-                iter->second->execute (mRuntime, arg0, arg1);
-
-                return;
-            }
-
             case 2:
             {
                 int opcode = (code>>20) & 0x3ff;
@@ -79,22 +63,6 @@ namespace Interpreter
                 return;
             }
 
-            case 0x31:
-            {
-                int opcode = (code>>16) & 0x3ff;
-                unsigned int arg0 = (code>>8) & 0xff;
-                unsigned int arg1 = code & 0xff;
-
-                std::map<int, Opcode2 *>::iterator iter = mSegment4.find (opcode);
-
-                if (iter==mSegment4.end())
-                    abortUnknownCode (4, opcode);
-
-                iter->second->execute (mRuntime, arg0, arg1);
-
-                return;
-            }
-
             case 0x32:
             {
                 int opcode = code & 0x3ffffff;
@@ -161,10 +129,6 @@ namespace Interpreter
             iter!=mSegment0.end(); ++iter)
             delete iter->second;
 
-        for (std::map<int, Opcode2 *>::iterator iter (mSegment1.begin());
-            iter!=mSegment1.end(); ++iter)
-            delete iter->second;
-
         for (std::map<int, Opcode1 *>::iterator iter (mSegment2.begin());
             iter!=mSegment2.end(); ++iter)
             delete iter->second;
@@ -173,10 +137,6 @@ namespace Interpreter
             iter!=mSegment3.end(); ++iter)
             delete iter->second;
 
-        for (std::map<int, Opcode2 *>::iterator iter (mSegment4.begin());
-            iter!=mSegment4.end(); ++iter)
-            delete iter->second;
-
         for (std::map<int, Opcode0 *>::iterator iter (mSegment5.begin());
             iter!=mSegment5.end(); ++iter)
             delete iter->second;
@@ -188,12 +148,6 @@ namespace Interpreter
         mSegment0.insert (std::make_pair (code, opcode));
     }
 
-    void Interpreter::installSegment1 (int code, Opcode2 *opcode)
-    {
-        assert(mSegment1.find(code) == mSegment1.end());
-        mSegment1.insert (std::make_pair (code, opcode));
-    }
-
     void Interpreter::installSegment2 (int code, Opcode1 *opcode)
     {
         assert(mSegment2.find(code) == mSegment2.end());
@@ -206,12 +160,6 @@ namespace Interpreter
         mSegment3.insert (std::make_pair (code, opcode));
     }
 
-    void Interpreter::installSegment4 (int code, Opcode2 *opcode)
-    {
-        assert(mSegment4.find(code) == mSegment4.end());
-        mSegment4.insert (std::make_pair (code, opcode));
-    }
-
     void Interpreter::installSegment5 (int code, Opcode0 *opcode)
     {
         assert(mSegment5.find(code) == mSegment5.end());
diff --git a/components/interpreter/interpreter.hpp b/components/interpreter/interpreter.hpp
index dd341e7092..ff3bcf7b7c 100644
--- a/components/interpreter/interpreter.hpp
+++ b/components/interpreter/interpreter.hpp
@@ -11,7 +11,6 @@ namespace Interpreter
 {
     class Opcode0;
     class Opcode1;
-    class Opcode2;
 
     class Interpreter
     {
@@ -19,10 +18,8 @@ namespace Interpreter
             bool mRunning;
             Runtime mRuntime;
             std::map<int, Opcode1 *> mSegment0;
-            std::map<int, Opcode2 *> mSegment1;
             std::map<int, Opcode1 *> mSegment2;
             std::map<int, Opcode1 *> mSegment3;
-            std::map<int, Opcode2 *> mSegment4;
             std::map<int, Opcode0 *> mSegment5;
 
             // not implemented
@@ -48,18 +45,12 @@ namespace Interpreter
             void installSegment0 (int code, Opcode1 *opcode);
             ///< ownership of \a opcode is transferred to *this.
 
-            void installSegment1 (int code, Opcode2 *opcode);
-            ///< ownership of \a opcode is transferred to *this.
-
             void installSegment2 (int code, Opcode1 *opcode);
             ///< ownership of \a opcode is transferred to *this.
 
             void installSegment3 (int code, Opcode1 *opcode);
             ///< ownership of \a opcode is transferred to *this.
 
-            void installSegment4 (int code, Opcode2 *opcode);
-            ///< ownership of \a opcode is transferred to *this.
-
             void installSegment5 (int code, Opcode0 *opcode);
             ///< ownership of \a opcode is transferred to *this.
 
diff --git a/components/interpreter/opcodes.hpp b/components/interpreter/opcodes.hpp
index c447e1f106..da266e8ffa 100644
--- a/components/interpreter/opcodes.hpp
+++ b/components/interpreter/opcodes.hpp
@@ -25,16 +25,6 @@ namespace Interpreter
             virtual ~Opcode1() {}
     };
 
-    /// opcode for 2 arguments
-    class Opcode2
-    {
-        public:
-        
-            virtual void execute (Runtime& runtime, unsigned int arg1, unsigned int arg2) = 0;
-            
-            virtual ~Opcode2() {}
-    };
-
 }
 
 #endif