add hex Store slots. 0 is reserved for Load

Author: dromer

Source/Heavy/OWLExporter.h

@@ -20,7 +20,12 @@ class OWLExporter : public ExporterBase {
         Array<PropertiesPanelProperty*> properties;
         properties.add(new PropertiesPanel::ComboComponent("Target board", targetBoardValue, { "OWL1", "OWL2", "OWL3" }));
         properties.add(new PropertiesPanel::ComboComponent("Export type", exportTypeValue, { "Source code", "Binary", "Load", "Store" }));
-        storeSlotProperty = new PropertiesPanel::ComboComponent("Store slot", storeSlotValue, { "1", "2", "3", "4", "5", "6", "7", "8" });
+        storeSlotProperty = new PropertiesPanel::ComboComponent(
+            "Store slot", storeSlotValue, {
+                "1", "2", "3", "4", "5", "6", "7", "8", "9",
+                "A", "B", "C", "D", "E", "F"
+            }
+        );
         properties.add(storeSlotProperty);
 
         for (auto* property : properties) {