diff --git a/STCompiler.Common/bin/Debug/net8.0/STCompiler.Common.dll b/STCompiler.Common/bin/Debug/net8.0/STCompiler.Common.dll
index 14398bb..2f833e8 100644
Binary files a/STCompiler.Common/bin/Debug/net8.0/STCompiler.Common.dll and b/STCompiler.Common/bin/Debug/net8.0/STCompiler.Common.dll differ
diff --git a/STCompiler.Common/bin/Debug/net8.0/STCompiler.Common.pdb b/STCompiler.Common/bin/Debug/net8.0/STCompiler.Common.pdb
index 1976021..e31bac4 100644
Binary files a/STCompiler.Common/bin/Debug/net8.0/STCompiler.Common.pdb and b/STCompiler.Common/bin/Debug/net8.0/STCompiler.Common.pdb differ
diff --git a/STCompiler.Common/obj/Debug/net8.0/STCompiler.Common.AssemblyInfo.cs b/STCompiler.Common/obj/Debug/net8.0/STCompiler.Common.AssemblyInfo.cs
index 6fdd837..7a4d92f 100644
--- a/STCompiler.Common/obj/Debug/net8.0/STCompiler.Common.AssemblyInfo.cs
+++ b/STCompiler.Common/obj/Debug/net8.0/STCompiler.Common.AssemblyInfo.cs
@@ -13,10 +13,10 @@ using System.Reflection;
 [assembly: System.Reflection.AssemblyCompanyAttribute("STCompiler.Common")]
 [assembly: System.Reflection.AssemblyConfigurationAttribute("Debug")]
 [assembly: System.Reflection.AssemblyFileVersionAttribute("1.0.0.0")]
-[assembly: System.Reflection.AssemblyInformationalVersionAttribute("1.0.0")]
+[assembly: System.Reflection.AssemblyInformationalVersionAttribute("1.0.0+bdee19419dc879274e82afdd621b54e1923e0940")]
 [assembly: System.Reflection.AssemblyProductAttribute("STCompiler.Common")]
 [assembly: System.Reflection.AssemblyTitleAttribute("STCompiler.Common")]
 [assembly: System.Reflection.AssemblyVersionAttribute("1.0.0.0")]
 
-// Generated by the MSBuild WriteCodeFragment class.
+// Von der MSBuild WriteCodeFragment-Klasse generiert.
 
diff --git a/STCompiler.Common/obj/Debug/net8.0/STCompiler.Common.AssemblyInfoInputs.cache b/STCompiler.Common/obj/Debug/net8.0/STCompiler.Common.AssemblyInfoInputs.cache
index dc208ce..220b771 100644
--- a/STCompiler.Common/obj/Debug/net8.0/STCompiler.Common.AssemblyInfoInputs.cache
+++ b/STCompiler.Common/obj/Debug/net8.0/STCompiler.Common.AssemblyInfoInputs.cache
@@ -1 +1 @@
-47f7f9783b0890c01839d6f882aac21cc3b1825ebf07d1532f3ffeb6d47e1764
+003d3c09b7e8f7918fbf4cdaa8090fdb095851afe383470e725a487d784f9416
diff --git a/STCompiler.Common/obj/Debug/net8.0/STCompiler.Common.dll b/STCompiler.Common/obj/Debug/net8.0/STCompiler.Common.dll
index 14398bb..2f833e8 100644
Binary files a/STCompiler.Common/obj/Debug/net8.0/STCompiler.Common.dll and b/STCompiler.Common/obj/Debug/net8.0/STCompiler.Common.dll differ
diff --git a/STCompiler.Common/obj/Debug/net8.0/STCompiler.Common.pdb b/STCompiler.Common/obj/Debug/net8.0/STCompiler.Common.pdb
index 1976021..e31bac4 100644
Binary files a/STCompiler.Common/obj/Debug/net8.0/STCompiler.Common.pdb and b/STCompiler.Common/obj/Debug/net8.0/STCompiler.Common.pdb differ
diff --git a/STCompiler.Common/obj/Debug/net8.0/ref/STCompiler.Common.dll b/STCompiler.Common/obj/Debug/net8.0/ref/STCompiler.Common.dll
index 7718b6b..e65a8d4 100644
Binary files a/STCompiler.Common/obj/Debug/net8.0/ref/STCompiler.Common.dll and b/STCompiler.Common/obj/Debug/net8.0/ref/STCompiler.Common.dll differ
diff --git a/STCompiler.Common/obj/Debug/net8.0/refint/STCompiler.Common.dll b/STCompiler.Common/obj/Debug/net8.0/refint/STCompiler.Common.dll
index 7718b6b..e65a8d4 100644
Binary files a/STCompiler.Common/obj/Debug/net8.0/refint/STCompiler.Common.dll and b/STCompiler.Common/obj/Debug/net8.0/refint/STCompiler.Common.dll differ
diff --git a/STCompiler.Compiler/Program.cs b/STCompiler.Compiler/Program.cs
index 2b53f9a..54cffee 100644
--- a/STCompiler.Compiler/Program.cs
+++ b/STCompiler.Compiler/Program.cs
@@ -622,12 +622,12 @@ public class BytecodeEmitter {
             syms[v.Name]=new Symbol{Name=v.Name,Type=v.Type,Index=idx++};
 
         foreach(var v in p.Vars)
-            if(v.Init!=null){EmitExpr(v.Init);EmitByte(0x03);EmitU16((ushort)syms[v.Name].Index);}
+            if(v.Init!=null){EmitExpr(v.Init);EmitByte(Bytecode.OpCodes.STORE_VAR);EmitU16((ushort)syms[v.Name].Index);} 
 
         foreach(var s in p.Stmts)
             EmitStmt(s);
 
-        EmitByte(0xF0); // Program End
+        EmitByte(Bytecode.OpCodes.HALT); // Program End
     }
 
     // Operationscodes für verschiedene Datentypen
@@ -779,14 +779,14 @@ public class BytecodeEmitter {
                 int ci = AddConst(ie.Value);
                 EmitByte(Bytecode.OpCodes.PUSH_CONST); // PUSH_CONST
                 EmitU16((ushort)ci);
-                EmitByte((byte)ie.Type); // Typ der Konstante
+                // removed emitting the type byte into code stream; type is stored with constant table
                 break;
                 
             case RealExpr re:
                 int cri = AddConst(re.Value);
                 EmitByte(Bytecode.OpCodes.PUSH_REAL_CONST); // PUSH_REAL_CONST
                 EmitU16((ushort)cri);
-                EmitByte((byte)re.Type); // REAL oder LREAL
+                // removed emitting the type byte into code stream; type is stored with constant table
                 break;
                 
             case VarExpr ve:
@@ -808,10 +808,11 @@ public class BytecodeEmitter {
                 }
                 
                 // Wenn nötig, Typenkonvertierung vor der Operation
-                if (be.L.Type != be.Type)
-                    EmitByte((byte)(0x50 + (int)be.Type)); // CONVERT_TO_*
-                if (be.R.Type != be.Type)
-                    EmitByte((byte)(0x50 + (int)be.Type)); // CONVERT_TO_*
+                // Conversion opcodes removed - runtime will handle type differences using constant type markers and operation opcodes
+                // if (be.L.Type != be.Type)
+                //     EmitByte((byte)(0x50 + (int)be.Type)); // CONVERT_TO_*
+                // if (be.R.Type != be.Type)
+                //     EmitByte((byte)(0x50 + (int)be.Type)); // CONVERT_TO_*
                     
                 EmitByte(opCodes[key]);
                 break;
diff --git a/STCompiler.Compiler/bin/Debug/net8.0/STCompiler.Common.dll b/STCompiler.Compiler/bin/Debug/net8.0/STCompiler.Common.dll
index 14398bb..2f833e8 100644
Binary files a/STCompiler.Compiler/bin/Debug/net8.0/STCompiler.Common.dll and b/STCompiler.Compiler/bin/Debug/net8.0/STCompiler.Common.dll differ
diff --git a/STCompiler.Compiler/bin/Debug/net8.0/STCompiler.Common.pdb b/STCompiler.Compiler/bin/Debug/net8.0/STCompiler.Common.pdb
index 1976021..e31bac4 100644
Binary files a/STCompiler.Compiler/bin/Debug/net8.0/STCompiler.Common.pdb and b/STCompiler.Compiler/bin/Debug/net8.0/STCompiler.Common.pdb differ
diff --git a/STCompiler.Compiler/bin/Debug/net8.0/STCompiler.Compiler.dll b/STCompiler.Compiler/bin/Debug/net8.0/STCompiler.Compiler.dll
index 96199dd..9df4131 100644
Binary files a/STCompiler.Compiler/bin/Debug/net8.0/STCompiler.Compiler.dll and b/STCompiler.Compiler/bin/Debug/net8.0/STCompiler.Compiler.dll differ
diff --git a/STCompiler.Compiler/bin/Debug/net8.0/STCompiler.Compiler.pdb b/STCompiler.Compiler/bin/Debug/net8.0/STCompiler.Compiler.pdb
index 439a2fb..8a45371 100644
Binary files a/STCompiler.Compiler/bin/Debug/net8.0/STCompiler.Compiler.pdb and b/STCompiler.Compiler/bin/Debug/net8.0/STCompiler.Compiler.pdb differ
diff --git a/STCompiler.Compiler/obj/Debug/net8.0/STCompiler.Compiler.AssemblyInfo.cs b/STCompiler.Compiler/obj/Debug/net8.0/STCompiler.Compiler.AssemblyInfo.cs
index 96b3af7..f3a7144 100644
--- a/STCompiler.Compiler/obj/Debug/net8.0/STCompiler.Compiler.AssemblyInfo.cs
+++ b/STCompiler.Compiler/obj/Debug/net8.0/STCompiler.Compiler.AssemblyInfo.cs
@@ -13,10 +13,10 @@ using System.Reflection;
 [assembly: System.Reflection.AssemblyCompanyAttribute("STCompiler.Compiler")]
 [assembly: System.Reflection.AssemblyConfigurationAttribute("Debug")]
 [assembly: System.Reflection.AssemblyFileVersionAttribute("1.0.0.0")]
-[assembly: System.Reflection.AssemblyInformationalVersionAttribute("1.0.0")]
+[assembly: System.Reflection.AssemblyInformationalVersionAttribute("1.0.0+bdee19419dc879274e82afdd621b54e1923e0940")]
 [assembly: System.Reflection.AssemblyProductAttribute("STCompiler.Compiler")]
 [assembly: System.Reflection.AssemblyTitleAttribute("STCompiler.Compiler")]
 [assembly: System.Reflection.AssemblyVersionAttribute("1.0.0.0")]
 
-// Generated by the MSBuild WriteCodeFragment class.
+// Von der MSBuild WriteCodeFragment-Klasse generiert.
 
diff --git a/STCompiler.Compiler/obj/Debug/net8.0/STCompiler.Compiler.AssemblyInfoInputs.cache b/STCompiler.Compiler/obj/Debug/net8.0/STCompiler.Compiler.AssemblyInfoInputs.cache
index 2f2f6fc..111b2d9 100644
--- a/STCompiler.Compiler/obj/Debug/net8.0/STCompiler.Compiler.AssemblyInfoInputs.cache
+++ b/STCompiler.Compiler/obj/Debug/net8.0/STCompiler.Compiler.AssemblyInfoInputs.cache
@@ -1 +1 @@
-62e0a705d77d04812d8911688545c821288c02824251ca71c994335e8a831b77
+46a6144e75588781017434fbf53d108cb421bb266942aa9aa55b1dd432b3b750
diff --git a/STCompiler.Compiler/obj/Debug/net8.0/STCompiler.Compiler.csproj.AssemblyReference.cache b/STCompiler.Compiler/obj/Debug/net8.0/STCompiler.Compiler.csproj.AssemblyReference.cache
index 9b81881..32cebfd 100644
Binary files a/STCompiler.Compiler/obj/Debug/net8.0/STCompiler.Compiler.csproj.AssemblyReference.cache and b/STCompiler.Compiler/obj/Debug/net8.0/STCompiler.Compiler.csproj.AssemblyReference.cache differ
diff --git a/STCompiler.Compiler/obj/Debug/net8.0/STCompiler.Compiler.dll b/STCompiler.Compiler/obj/Debug/net8.0/STCompiler.Compiler.dll
index 96199dd..9df4131 100644
Binary files a/STCompiler.Compiler/obj/Debug/net8.0/STCompiler.Compiler.dll and b/STCompiler.Compiler/obj/Debug/net8.0/STCompiler.Compiler.dll differ
diff --git a/STCompiler.Compiler/obj/Debug/net8.0/STCompiler.Compiler.pdb b/STCompiler.Compiler/obj/Debug/net8.0/STCompiler.Compiler.pdb
index 439a2fb..8a45371 100644
Binary files a/STCompiler.Compiler/obj/Debug/net8.0/STCompiler.Compiler.pdb and b/STCompiler.Compiler/obj/Debug/net8.0/STCompiler.Compiler.pdb differ
diff --git a/STCompiler.Compiler/obj/Debug/net8.0/ref/STCompiler.Compiler.dll b/STCompiler.Compiler/obj/Debug/net8.0/ref/STCompiler.Compiler.dll
index ac5a523..a0f0572 100644
Binary files a/STCompiler.Compiler/obj/Debug/net8.0/ref/STCompiler.Compiler.dll and b/STCompiler.Compiler/obj/Debug/net8.0/ref/STCompiler.Compiler.dll differ
diff --git a/STCompiler.Compiler/obj/Debug/net8.0/refint/STCompiler.Compiler.dll b/STCompiler.Compiler/obj/Debug/net8.0/refint/STCompiler.Compiler.dll
index ac5a523..a0f0572 100644
Binary files a/STCompiler.Compiler/obj/Debug/net8.0/refint/STCompiler.Compiler.dll and b/STCompiler.Compiler/obj/Debug/net8.0/refint/STCompiler.Compiler.dll differ
diff --git a/STCompiler.Compiler/output.bin b/STCompiler.Compiler/output.bin
index a480aa0..34a8490 100644
Binary files a/STCompiler.Compiler/output.bin and b/STCompiler.Compiler/output.bin differ
diff --git a/STCompiler.Disassembler/bin/Debug/net8.0/STCompiler.Common.dll b/STCompiler.Disassembler/bin/Debug/net8.0/STCompiler.Common.dll
index 14398bb..2f833e8 100644
Binary files a/STCompiler.Disassembler/bin/Debug/net8.0/STCompiler.Common.dll and b/STCompiler.Disassembler/bin/Debug/net8.0/STCompiler.Common.dll differ
diff --git a/STCompiler.Disassembler/bin/Debug/net8.0/STCompiler.Common.pdb b/STCompiler.Disassembler/bin/Debug/net8.0/STCompiler.Common.pdb
index 1976021..e31bac4 100644
Binary files a/STCompiler.Disassembler/bin/Debug/net8.0/STCompiler.Common.pdb and b/STCompiler.Disassembler/bin/Debug/net8.0/STCompiler.Common.pdb differ
diff --git a/STCompiler.Disassembler/bin/Debug/net8.0/STCompiler.Disassembler.dll b/STCompiler.Disassembler/bin/Debug/net8.0/STCompiler.Disassembler.dll
index 3605db3..3adf22d 100644
Binary files a/STCompiler.Disassembler/bin/Debug/net8.0/STCompiler.Disassembler.dll and b/STCompiler.Disassembler/bin/Debug/net8.0/STCompiler.Disassembler.dll differ
diff --git a/STCompiler.Disassembler/bin/Debug/net8.0/STCompiler.Disassembler.pdb b/STCompiler.Disassembler/bin/Debug/net8.0/STCompiler.Disassembler.pdb
index 9984f44..b5c604f 100644
Binary files a/STCompiler.Disassembler/bin/Debug/net8.0/STCompiler.Disassembler.pdb and b/STCompiler.Disassembler/bin/Debug/net8.0/STCompiler.Disassembler.pdb differ
diff --git a/STCompiler.Disassembler/obj/Debug/net8.0/STCompiler.Disassembler.AssemblyInfo.cs b/STCompiler.Disassembler/obj/Debug/net8.0/STCompiler.Disassembler.AssemblyInfo.cs
index 7884c82..c076f49 100644
--- a/STCompiler.Disassembler/obj/Debug/net8.0/STCompiler.Disassembler.AssemblyInfo.cs
+++ b/STCompiler.Disassembler/obj/Debug/net8.0/STCompiler.Disassembler.AssemblyInfo.cs
@@ -13,10 +13,10 @@ using System.Reflection;
 [assembly: System.Reflection.AssemblyCompanyAttribute("STCompiler.Disassembler")]
 [assembly: System.Reflection.AssemblyConfigurationAttribute("Debug")]
 [assembly: System.Reflection.AssemblyFileVersionAttribute("1.0.0.0")]
-[assembly: System.Reflection.AssemblyInformationalVersionAttribute("1.0.0")]
+[assembly: System.Reflection.AssemblyInformationalVersionAttribute("1.0.0+bdee19419dc879274e82afdd621b54e1923e0940")]
 [assembly: System.Reflection.AssemblyProductAttribute("STCompiler.Disassembler")]
 [assembly: System.Reflection.AssemblyTitleAttribute("STCompiler.Disassembler")]
 [assembly: System.Reflection.AssemblyVersionAttribute("1.0.0.0")]
 
-// Generated by the MSBuild WriteCodeFragment class.
+// Von der MSBuild WriteCodeFragment-Klasse generiert.
 
diff --git a/STCompiler.Disassembler/obj/Debug/net8.0/STCompiler.Disassembler.AssemblyInfoInputs.cache b/STCompiler.Disassembler/obj/Debug/net8.0/STCompiler.Disassembler.AssemblyInfoInputs.cache
index 8c30dea..2f53faa 100644
--- a/STCompiler.Disassembler/obj/Debug/net8.0/STCompiler.Disassembler.AssemblyInfoInputs.cache
+++ b/STCompiler.Disassembler/obj/Debug/net8.0/STCompiler.Disassembler.AssemblyInfoInputs.cache
@@ -1 +1 @@
-dc637a389172b7c1d98556c8fdb0f7e6b7d0182cadc40b75d2a802cc3145ba46
+e512ea89251f2295a76007dc4f99ce92f19bc2813739fd32e9bf7233cc288310
diff --git a/STCompiler.Disassembler/obj/Debug/net8.0/STCompiler.Disassembler.csproj.AssemblyReference.cache b/STCompiler.Disassembler/obj/Debug/net8.0/STCompiler.Disassembler.csproj.AssemblyReference.cache
index 9b81881..32cebfd 100644
Binary files a/STCompiler.Disassembler/obj/Debug/net8.0/STCompiler.Disassembler.csproj.AssemblyReference.cache and b/STCompiler.Disassembler/obj/Debug/net8.0/STCompiler.Disassembler.csproj.AssemblyReference.cache differ
diff --git a/STCompiler.Disassembler/obj/Debug/net8.0/STCompiler.Disassembler.dll b/STCompiler.Disassembler/obj/Debug/net8.0/STCompiler.Disassembler.dll
index 3605db3..3adf22d 100644
Binary files a/STCompiler.Disassembler/obj/Debug/net8.0/STCompiler.Disassembler.dll and b/STCompiler.Disassembler/obj/Debug/net8.0/STCompiler.Disassembler.dll differ
diff --git a/STCompiler.Disassembler/obj/Debug/net8.0/STCompiler.Disassembler.pdb b/STCompiler.Disassembler/obj/Debug/net8.0/STCompiler.Disassembler.pdb
index 9984f44..b5c604f 100644
Binary files a/STCompiler.Disassembler/obj/Debug/net8.0/STCompiler.Disassembler.pdb and b/STCompiler.Disassembler/obj/Debug/net8.0/STCompiler.Disassembler.pdb differ
diff --git a/STCompiler.Disassembler/obj/Debug/net8.0/ref/STCompiler.Disassembler.dll b/STCompiler.Disassembler/obj/Debug/net8.0/ref/STCompiler.Disassembler.dll
index 18f4033..62cf6ba 100644
Binary files a/STCompiler.Disassembler/obj/Debug/net8.0/ref/STCompiler.Disassembler.dll and b/STCompiler.Disassembler/obj/Debug/net8.0/ref/STCompiler.Disassembler.dll differ
diff --git a/STCompiler.Disassembler/obj/Debug/net8.0/refint/STCompiler.Disassembler.dll b/STCompiler.Disassembler/obj/Debug/net8.0/refint/STCompiler.Disassembler.dll
index 18f4033..62cf6ba 100644
Binary files a/STCompiler.Disassembler/obj/Debug/net8.0/refint/STCompiler.Disassembler.dll and b/STCompiler.Disassembler/obj/Debug/net8.0/refint/STCompiler.Disassembler.dll differ
diff --git a/STCompiler.Simulator/Program.cs b/STCompiler.Simulator/Program.cs
index 7fe13a2..9b990ee 100644
--- a/STCompiler.Simulator/Program.cs
+++ b/STCompiler.Simulator/Program.cs
@@ -23,86 +23,71 @@ class Program {
         string magic = System.Text.Encoding.ASCII.GetString(r.ReadBytes(4));
         if (magic != Bytecode.Magic) throw new Exception("Invalid magic");
         ushort ver = r.ReadUInt16();
-        if (ver != Bytecode.Version) throw new Exception($"Unsupported version {ver}");
+        Console.WriteLine($"Version: {ver}");
+        bool oldFormat = ver < Bytecode.Version;
 
         ushort nConsts = r.ReadUInt16();
+        Console.WriteLine($"Consts: {nConsts}");
         var consts = new List<object>();
-        for (int i = 0; i < nConsts; i++) {
-            byte t = r.ReadByte();
-            switch(t) {
-                case 1: consts.Add(r.ReadInt64()); break;
-                case 2: consts.Add(r.ReadDouble()); break;
-                case 3: consts.Add(r.ReadSingle()); break;
-                case 4: consts.Add(r.ReadInt32()); break;
-                default: throw new Exception($"Unknown const type {t}");
+        if (oldFormat) {
+            // old format: constants stored as 4-byte ints
+            for (int i = 0; i < nConsts; i++) { int v = r.ReadInt32(); consts.Add(v); Console.WriteLine($"  [{i}] = {v}"); }
+        } else {
+            for (int i = 0; i < nConsts; i++) {
+                byte t = r.ReadByte();
+                switch(t) {
+                    case 1: { long v = r.ReadInt64(); consts.Add(v); Console.WriteLine($"  [{i}] (long) = {v}"); break; }
+                    case 2: { double v = r.ReadDouble(); consts.Add(v); Console.WriteLine($"  [{i}] (double) = {v}"); break; }
+                    case 3: { float v = r.ReadSingle(); consts.Add(v); Console.WriteLine($"  [{i}] (float) = {v}"); break; }
+                    case 4: { int v = r.ReadInt32(); consts.Add(v); Console.WriteLine($"  [{i}] (int) = {v}"); break; }
+                    default: { Console.WriteLine($"  [{i}] Unknown const type {t}"); break; }
+                }
             }
         }
 
         ushort nVars = r.ReadUInt16();
-        var varTypes = new VarType[nVars];
-        for (int i = 0; i < nVars; i++) varTypes[i] = (VarType)r.ReadByte();
+        Console.WriteLine($"Vars: {nVars}");
+        var varTypes = new byte[nVars];
+        for (int i = 0; i < nVars; i++) { varTypes[i] = r.ReadByte(); Console.WriteLine($"  Var[{i}] type = {varTypes[i]}"); }
 
         ushort codeLen = r.ReadUInt16();
+        Console.WriteLine($"CodeLen: {codeLen} bytes");
         var code = r.ReadBytes(codeLen);
 
         var stack = new Stack<object>();
         var vars = new object[nVars];
         int ip = 0;
+        Console.WriteLine("\n--- Disassembly / Simulation ---");
         while (ip < code.Length) {
+            int addr = ip;
             byte op = code[ip++];
-            switch(op) {
-                case Bytecode.OpCodes.NOP: break;
+            Console.Write($"{addr:0000}: 0x{op:X2} {Bytecode.OpName(op)} ");
+            switch (op) {
+                case Bytecode.OpCodes.NOP: Console.WriteLine("NOP"); break;
                 case Bytecode.OpCodes.PUSH_CONST: {
                     ushort ci = (ushort)(code[ip++] | (code[ip++] << 8));
+                    if (oldFormat) { byte typeMarker = code[ip++]; /* skip legacy type byte */ }
+                    Console.WriteLine($"PUSH_CONST {ci} ({consts[ci]})");
                     stack.Push(consts[ci]);
-                    break;
-                }
+                    break; }
                 case Bytecode.OpCodes.PUSH_REAL_CONST: {
                     ushort ci = (ushort)(code[ip++] | (code[ip++] << 8));
+                    if (oldFormat) { byte typeMarker = code[ip++]; /* skip legacy type byte */ }
+                    Console.WriteLine($"PUSH_REAL_CONST {ci} ({consts[ci]})");
                     stack.Push(consts[ci]);
-                    break;
-                }
-                case Bytecode.OpCodes.LOAD_VAR: {
-                    ushort vi = (ushort)(code[ip++] | (code[ip++] << 8));
-                    stack.Push(vars[vi]);
-                    break;
-                }
-                case Bytecode.OpCodes.STORE_VAR: {
-                    ushort vi = (ushort)(code[ip++] | (code[ip++] << 8));
-                    vars[vi] = stack.Pop();
-                    break;
-                }
-                case Bytecode.OpCodes.JZ: {
-                    ushort target = (ushort)(code[ip++] | (code[ip++] << 8));
-                    var cond = stack.Pop();
-                    bool isFalse = cond is int ci ? ci == 0 : cond is long cl ? cl == 0L : cond is double cd ? cd == 0.0 : cond == null;
-                    if (isFalse) ip = target;
-                    break;
-                }
-                case Bytecode.OpCodes.JMP: {
-                    ushort target = (ushort)(code[ip++] | (code[ip++] << 8));
-                    ip = target;
-                    break;
-                }
-                case Bytecode.OpCodes.HALT:
-                    Console.WriteLine("HALT");
-                    return;
-                default:
-                    // Simple arithmetic handlers for some opcodes
-                    if (Bytecode.OpName(op).StartsWith("ADD_")) {
-                        dynamic b = stack.Pop(); dynamic a = stack.Pop(); stack.Push(a + b); break;
-                    }
-                    if (Bytecode.OpName(op).StartsWith("SUB_")) {
-                        dynamic b = stack.Pop(); dynamic a = stack.Pop(); stack.Push(a - b); break;
-                    }
-                    if (Bytecode.OpName(op).StartsWith("MUL_")) {
-                        dynamic b = stack.Pop(); dynamic a = stack.Pop(); stack.Push(a * b); break;
-                    }
-                    if (Bytecode.OpName(op).StartsWith("DIV_")) {
-                        dynamic b = stack.Pop(); dynamic a = stack.Pop(); stack.Push(a / b); break;
+                    break; }
+                case Bytecode.OpCodes.LOAD_VAR: { ushort vi = (ushort)(code[ip++] | (code[ip++] << 8)); Console.WriteLine($"LOAD_VAR {vi}"); stack.Push(vars[vi]); break; }
+                case Bytecode.OpCodes.STORE_VAR: { ushort vi = (ushort)(code[ip++] | (code[ip++] << 8)); Console.WriteLine($"STORE_VAR {vi}"); vars[vi] = stack.Pop(); break; }
+                case Bytecode.OpCodes.JZ: { ushort target = (ushort)(code[ip++] | (code[ip++] << 8)); Console.WriteLine($"JZ addr={target}"); var cond = stack.Pop(); bool isFalse = cond is int ci ? ci == 0 : cond is long cl ? cl == 0L : cond is double cd ? cd == 0.0 : cond == null; if (isFalse) ip = target; break; }
+                case Bytecode.OpCodes.JMP: { ushort target = (ushort)(code[ip++] | (code[ip++] << 8)); Console.WriteLine($"JMP addr={target}"); ip = target; break; }
+                case Bytecode.OpCodes.HALT: Console.WriteLine("HALT"); ip = code.Length; break;
+                default: Console.WriteLine();
+                    // fallback handlers
+                    if (Bytecode.OpName(op).StartsWith("ADD_") || Bytecode.OpName(op).StartsWith("SUB_") || Bytecode.OpName(op).StartsWith("MUL_") || Bytecode.OpName(op).StartsWith("DIV_")) {
+                        dynamic b = stack.Pop(); dynamic a = stack.Pop(); if (Bytecode.OpName(op).StartsWith("ADD_")) stack.Push(a + b); else if (Bytecode.OpName(op).StartsWith("SUB_")) stack.Push(a - b); else if (Bytecode.OpName(op).StartsWith("MUL_")) stack.Push(a * b); else stack.Push(a / b);
+                        break;
                     }
                     if (Bytecode.OpName(op).StartsWith("LT_") || Bytecode.OpName(op).StartsWith("GT_") || Bytecode.OpName(op).StartsWith("LE_") || Bytecode.OpName(op).StartsWith("GE_") || Bytecode.OpName(op).StartsWith("EQ_") || Bytecode.OpName(op).StartsWith("NEQ_")) {
-                        // comparisons: pop r, pop l, push int 0/1
                         dynamic rVal = stack.Pop(); dynamic lVal = stack.Pop();
                         bool res = Bytecode.OpName(op).StartsWith("LT_") ? (lVal < rVal) :
                                    Bytecode.OpName(op).StartsWith("GT_") ? (lVal > rVal) :
@@ -117,7 +102,14 @@ class Program {
             }
         }
 
-        Console.WriteLine("Execution finished");
-        for (int i = 0; i < vars.Length; i++) Console.WriteLine($"Var[{i}] = {vars[i]}");
+        Console.WriteLine("Execution finished\n");
+        // Detailed variable summary
+        Console.WriteLine("=== Variable summary ===");
+        Console.WriteLine("Index\tType\t\tValue");
+        for (int i = 0; i < vars.Length; i++) {
+            string typeName = (i < varTypes.Length) ? ((VarType)varTypes[i]).ToString() : "Unknown";
+            var value = vars[i] ?? "null";
+            Console.WriteLine($"{i}\t{typeName.PadRight(8)}\t{value}");
+        }
     }
 }
diff --git a/STCompiler.Simulator/bin/Debug/net8.0/STCompiler.Common.dll b/STCompiler.Simulator/bin/Debug/net8.0/STCompiler.Common.dll
index 14398bb..2f833e8 100644
Binary files a/STCompiler.Simulator/bin/Debug/net8.0/STCompiler.Common.dll and b/STCompiler.Simulator/bin/Debug/net8.0/STCompiler.Common.dll differ
diff --git a/STCompiler.Simulator/bin/Debug/net8.0/STCompiler.Common.pdb b/STCompiler.Simulator/bin/Debug/net8.0/STCompiler.Common.pdb
index 1976021..e31bac4 100644
Binary files a/STCompiler.Simulator/bin/Debug/net8.0/STCompiler.Common.pdb and b/STCompiler.Simulator/bin/Debug/net8.0/STCompiler.Common.pdb differ
diff --git a/STCompiler.Simulator/bin/Debug/net8.0/STCompiler.Simulator.dll b/STCompiler.Simulator/bin/Debug/net8.0/STCompiler.Simulator.dll
index c61cbf4..8959c75 100644
Binary files a/STCompiler.Simulator/bin/Debug/net8.0/STCompiler.Simulator.dll and b/STCompiler.Simulator/bin/Debug/net8.0/STCompiler.Simulator.dll differ
diff --git a/STCompiler.Simulator/bin/Debug/net8.0/STCompiler.Simulator.pdb b/STCompiler.Simulator/bin/Debug/net8.0/STCompiler.Simulator.pdb
index 9dc9620..7af0505 100644
Binary files a/STCompiler.Simulator/bin/Debug/net8.0/STCompiler.Simulator.pdb and b/STCompiler.Simulator/bin/Debug/net8.0/STCompiler.Simulator.pdb differ
diff --git a/STCompiler.Simulator/obj/Debug/net8.0/STCompiler.Simulator.AssemblyInfo.cs b/STCompiler.Simulator/obj/Debug/net8.0/STCompiler.Simulator.AssemblyInfo.cs
index 6bf35d1..d507ab4 100644
--- a/STCompiler.Simulator/obj/Debug/net8.0/STCompiler.Simulator.AssemblyInfo.cs
+++ b/STCompiler.Simulator/obj/Debug/net8.0/STCompiler.Simulator.AssemblyInfo.cs
@@ -13,10 +13,10 @@ using System.Reflection;
 [assembly: System.Reflection.AssemblyCompanyAttribute("STCompiler.Simulator")]
 [assembly: System.Reflection.AssemblyConfigurationAttribute("Debug")]
 [assembly: System.Reflection.AssemblyFileVersionAttribute("1.0.0.0")]
-[assembly: System.Reflection.AssemblyInformationalVersionAttribute("1.0.0")]
+[assembly: System.Reflection.AssemblyInformationalVersionAttribute("1.0.0+bdee19419dc879274e82afdd621b54e1923e0940")]
 [assembly: System.Reflection.AssemblyProductAttribute("STCompiler.Simulator")]
 [assembly: System.Reflection.AssemblyTitleAttribute("STCompiler.Simulator")]
 [assembly: System.Reflection.AssemblyVersionAttribute("1.0.0.0")]
 
-// Generated by the MSBuild WriteCodeFragment class.
+// Von der MSBuild WriteCodeFragment-Klasse generiert.
 
diff --git a/STCompiler.Simulator/obj/Debug/net8.0/STCompiler.Simulator.AssemblyInfoInputs.cache b/STCompiler.Simulator/obj/Debug/net8.0/STCompiler.Simulator.AssemblyInfoInputs.cache
index 89c0bcf..c12e849 100644
--- a/STCompiler.Simulator/obj/Debug/net8.0/STCompiler.Simulator.AssemblyInfoInputs.cache
+++ b/STCompiler.Simulator/obj/Debug/net8.0/STCompiler.Simulator.AssemblyInfoInputs.cache
@@ -1 +1 @@
-e68c3397a6969111aabee6432e0447cb372a6ba9ca289ded0d01796be53dbb16
+d8b8419173d413df3b338b6f12782609e7ef0c8712b509b4a4bb6869e65f93af
diff --git a/STCompiler.Simulator/obj/Debug/net8.0/STCompiler.Simulator.csproj.AssemblyReference.cache b/STCompiler.Simulator/obj/Debug/net8.0/STCompiler.Simulator.csproj.AssemblyReference.cache
index 9b81881..32cebfd 100644
Binary files a/STCompiler.Simulator/obj/Debug/net8.0/STCompiler.Simulator.csproj.AssemblyReference.cache and b/STCompiler.Simulator/obj/Debug/net8.0/STCompiler.Simulator.csproj.AssemblyReference.cache differ
diff --git a/STCompiler.Simulator/obj/Debug/net8.0/STCompiler.Simulator.dll b/STCompiler.Simulator/obj/Debug/net8.0/STCompiler.Simulator.dll
index c61cbf4..8959c75 100644
Binary files a/STCompiler.Simulator/obj/Debug/net8.0/STCompiler.Simulator.dll and b/STCompiler.Simulator/obj/Debug/net8.0/STCompiler.Simulator.dll differ
diff --git a/STCompiler.Simulator/obj/Debug/net8.0/STCompiler.Simulator.pdb b/STCompiler.Simulator/obj/Debug/net8.0/STCompiler.Simulator.pdb
index 9dc9620..7af0505 100644
Binary files a/STCompiler.Simulator/obj/Debug/net8.0/STCompiler.Simulator.pdb and b/STCompiler.Simulator/obj/Debug/net8.0/STCompiler.Simulator.pdb differ
diff --git a/STCompiler.Simulator/obj/Debug/net8.0/ref/STCompiler.Simulator.dll b/STCompiler.Simulator/obj/Debug/net8.0/ref/STCompiler.Simulator.dll
index 35146d5..3d64003 100644
Binary files a/STCompiler.Simulator/obj/Debug/net8.0/ref/STCompiler.Simulator.dll and b/STCompiler.Simulator/obj/Debug/net8.0/ref/STCompiler.Simulator.dll differ
diff --git a/STCompiler.Simulator/obj/Debug/net8.0/refint/STCompiler.Simulator.dll b/STCompiler.Simulator/obj/Debug/net8.0/refint/STCompiler.Simulator.dll
index 35146d5..3d64003 100644
Binary files a/STCompiler.Simulator/obj/Debug/net8.0/refint/STCompiler.Simulator.dll and b/STCompiler.Simulator/obj/Debug/net8.0/refint/STCompiler.Simulator.dll differ