the description field can be used to define pin assignments

src/main/java/de/neemann/digital/builder/PinMap.java

@@ -72,6 +72,9 @@ public class PinMap {
      * @throws PinMapException PinMapException
      */
     public PinMap parseString(String assignment) throws PinMapException {
+        if (assignment == null)
+            return this;
+
         StringTokenizer st = new StringTokenizer(assignment, ";,");
         while (st.hasMoreTokens()) {
             String tok = st.nextToken();

src/main/java/de/neemann/digital/draw/elements/Circuit.java

@@ -510,4 +510,11 @@ public class Circuit {
         this.measurementOrdering = measurementOrdering;
     }
 
+    /**
+     * @return the description
+     */
+    public String getDescription() {
+        return getAttributes().get(Keys.DESCRIPTION);
+    }
+
 }

src/main/java/de/neemann/digital/gui/Main.java

@@ -486,7 +486,9 @@ public class Main extends JFrame implements ClosingWindowListener.ConfirmSave, E
             public void actionPerformed(ActionEvent e) {
                 try {
                     Model model = new ModelDescription(circuitComponent.getCircuit(), library).createModel(false);
-                    new TableDialog(Main.this, new ModelAnalyser(model).analyse(), shapeFactory, filename).setVisible(true);
+                    new TableDialog(Main.this, new ModelAnalyser(model).analyse(), shapeFactory, filename)
+                            .setPinDescription(circuitComponent.getCircuit().getDescription())
+                            .setVisible(true);
                     elementState.activate();
                 } catch (PinException | NodeException | AnalyseException e1) {
                     showErrorAndStopModel(Lang.get("msg_annalyseErr"), e1);

src/main/java/de/neemann/digital/gui/components/table/TableDialog.java

@@ -65,6 +65,7 @@ public class TableDialog extends JDialog {
     private TableColumn column;
     private int columnIndex;
     private AllSolutionsDialog allSolutionsDialog;
+    private String pinDescription;
 
     /**
      * Creates a new instance
@@ -287,6 +288,7 @@ public class TableDialog extends JDialog {
         if (fileChooser.showSaveDialog(this) == JFileChooser.APPROVE_OPTION) {
             try {
                 try (OutputStream out = new FileOutputStream(fileChooser.getSelectedFile())) {
+                    expressionExporter.getPinMapping().parseString(pinDescription);
                     new BuiderExpressionCreator(expressionExporter.getBuilder(), ExpressionModifier.IDENTITY).create();
                     expressionExporter.writeTo(out);
                 }
@@ -328,6 +330,7 @@ public class TableDialog extends JDialog {
                 f = new File(f.getParentFile(), name);
 
                 Gal16v8CuplExporter cupl = new Gal16v8CuplExporter(name.substring(0, name.length() - 4));
+                cupl.getPinMapping().parseString(pinDescription);
                 new BuiderExpressionCreator(cupl.getBuilder(), ExpressionModifier.IDENTITY).create();
                 try (FileOutputStream out = new FileOutputStream(f)) {
                     cupl.writeTo(out);
@@ -362,6 +365,17 @@ public class TableDialog extends JDialog {
         calculateExpressions();
     }
 
+    /**
+     * Sets a pin description
+     *
+     * @param pinDescription the pin description
+     * @return this for chained calls
+     */
+    public TableDialog setPinDescription(String pinDescription) {
+        this.pinDescription = pinDescription;
+        return this;
+    }
+
     private class CalculationTableModelListener implements TableModelListener {
         @Override
         public void tableChanged(TableModelEvent tableModelEvent) {