diff --git a/simulator_SIC_XE/devices/FA.dev b/simulator_SIC_XE/devices/FA.dev
new file mode 100644
index 0000000..cb6e5ed
--- /dev/null
+++ b/simulator_SIC_XE/devices/FA.dev
@@ -0,0 +1,2 @@
+5
+0
diff --git a/simulator_SIC_XE/include/code.h b/simulator_SIC_XE/include/code.h
new file mode 100644
index 0000000..6a0c9b7
--- /dev/null
+++ b/simulator_SIC_XE/include/code.h
@@ -0,0 +1,26 @@
+#ifndef CODE_H
+#define CODE_H
+
+#include <vector>
+#include <memory>
+
+#include "node.h"
+
+class Code {
+
+public:
+    Code() = default;
+
+    void addLine(const std::shared_ptr<Node>& line);
+
+    const std::vector<std::shared_ptr<Node>>& getLines() const;
+
+    const string toString() const;
+
+private:
+    std::vector<std::shared_ptr<Node>> _lines;
+};
+
+
+
+#endif // CODE_H
\ No newline at end of file
diff --git a/simulator_SIC_XE/include/mnemonic.h b/simulator_SIC_XE/include/mnemonic.h
new file mode 100644
index 0000000..b144dfb
--- /dev/null
+++ b/simulator_SIC_XE/include/mnemonic.h
@@ -0,0 +1,16 @@
+#ifndef MNEMONIC_H
+#define MNEMONIC_H
+
+#include <string>
+
+using std::string;
+
+class Mnemonic {
+public:
+    string toString() const;
+};
+
+
+
+
+#endif // MNEMONIC_H
\ No newline at end of file
diff --git a/simulator_SIC_XE/include/node.h b/simulator_SIC_XE/include/node.h
new file mode 100644
index 0000000..2152f97
--- /dev/null
+++ b/simulator_SIC_XE/include/node.h
@@ -0,0 +1,31 @@
+#ifndef NODE_H
+#define NODE_H
+
+#include <string>
+#include <memory>
+
+#include "mnemonic.h"
+
+using std::string;
+
+class Node {
+public:
+
+    string getLabel() const;
+
+    string getComment() const;
+    
+    std::shared_ptr<Mnemonic> getMnemonic() const;
+
+    string toString() const;
+
+
+
+protected:
+    string _label;
+    std::shared_ptr<Mnemonic> _mnemonic;
+    string _comment;
+};
+
+
+#endif // NODE_H
\ No newline at end of file
diff --git a/simulator_SIC_XE/src/code.cpp b/simulator_SIC_XE/src/code.cpp
new file mode 100644
index 0000000..0db062a
--- /dev/null
+++ b/simulator_SIC_XE/src/code.cpp
@@ -0,0 +1,20 @@
+#include "code.h"
+
+void Code::addLine(const std::shared_ptr<Node> &line)
+{
+    _lines.emplace_back(line);
+}
+
+const std::vector<std::shared_ptr<Node>> &Code::getLines() const
+{
+    return _lines;
+}
+
+const string Code::toString() const
+{
+    string result;
+    for (const auto& line : _lines) {
+        result += line->toString() + "\n";
+    }
+    return result;
+}
diff --git a/simulator_SIC_XE/src/mnemonic.cpp b/simulator_SIC_XE/src/mnemonic.cpp
new file mode 100644
index 0000000..4944082
--- /dev/null
+++ b/simulator_SIC_XE/src/mnemonic.cpp
@@ -0,0 +1,6 @@
+#include "mnemonic.h"
+
+string Mnemonic::toString() const
+{
+    return string();
+}
\ No newline at end of file
diff --git a/simulator_SIC_XE/src/node.cpp b/simulator_SIC_XE/src/node.cpp
new file mode 100644
index 0000000..f0fccdb
--- /dev/null
+++ b/simulator_SIC_XE/src/node.cpp
@@ -0,0 +1,22 @@
+#include "node.h"
+
+string Node::getLabel() const
+{
+    return _label;
+}
+
+string Node::getComment() const
+{
+    return _comment;
+}
+
+std::shared_ptr<Mnemonic> Node::getMnemonic() const
+{
+    return _mnemonic;
+}
+
+string Node::toString() const
+{
+    return  (_label.length() > 0 ? _label + " " : "") + (_mnemonic ? _mnemonic->toString() + " ": "") + "." + _comment;
+}
+    
\ No newline at end of file