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diff --git a/qtmips_gui/programmodel.h b/qtmips_gui/programmodel.h
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+// SPDX-License-Identifier: GPL-2.0+
+/*******************************************************************************
+ * QtMips - MIPS 32-bit Architecture Subset Simulator
+ *
+ * Implemented to support following courses:
+ *
+ *   B35APO - Computer Architectures
+ *   https://cw.fel.cvut.cz/wiki/courses/b35apo
+ *
+ *   B4M35PAP - Advanced Computer Architectures
+ *   https://cw.fel.cvut.cz/wiki/courses/b4m35pap/start
+ *
+ * Copyright (c) 2017-2019 Karel Koci<cynerd@email.cz>
+ * Copyright (c) 2019      Pavel Pisa <pisa@cmp.felk.cvut.cz>
+ *
+ * Faculty of Electrical Engineering (http://www.fel.cvut.cz)
+ * Czech Technical University        (http://www.cvut.cz/)
+ *
+ * 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; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * 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 for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA  02110-1301, USA.
+ *
+ ******************************************************************************/
+
+#ifndef PROGRAMMODEL_H
+#define PROGRAMMODEL_H
+
+#include <QAbstractTableModel>
+#include <QFont>
+#include "qtmipsmachine.h"
+
+class ProgramModel : public QAbstractTableModel
+{
+    Q_OBJECT
+
+    using Super = QAbstractTableModel;
+public:
+    ProgramModel(QObject *parent);
+    int rowCount(const QModelIndex &parent = QModelIndex()) const override ;
+    int columnCount(const QModelIndex &parent = QModelIndex()) const override;
+    QVariant headerData(int section, Qt::Orientation orientation, int role) const override;
+    QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override;
+    bool adjustRowAndOffset(int &row, int optimal_row, std::uint32_t address);
+    void update_all();
+
+    inline const QFont *getFont() const {
+        return &data_font;
+    }
+
+    inline std::uint32_t getIndex0Offset() const {
+        return index0_offset;
+    }
+
+    inline unsigned int cellSizeBytes() const {
+        return 4;
+    }
+    inline bool get_row_address(std::uint32_t &address, int row) const {
+        address = index0_offset + row * cellSizeBytes();
+        return address >= index0_offset;
+    }
+    inline bool get_row_for_address(int &row, std::uint32_t address) const {
+        if (address < index0_offset) {
+            row = -1;
+            return false;
+        }
+        row = (address - index0_offset) / cellSizeBytes();
+        if ((address - index0_offset > 0x80000000) || row > rowCount()) {
+            row = rowCount();
+            return false;
+        }
+        return true;
+    }
+
+public slots:
+    void setup(machine::QtMipsMachine *machine);
+    void check_for_updates();
+
+private:
+    std::uint32_t index0_offset;
+    QFont data_font;
+    machine::QtMipsMachine *machine;
+    std::uint32_t memory_change_counter;
+    std::uint32_t cache_program_change_counter;
+};
+
+#endif // PROGRAMMODEL_H