Dependency inversions

src/main/java/fabrik/simulator/pic16f84/interfaces/ProgramStackInterface.java

@@ -0,0 +1,15 @@
+package fabrik.simulator.pic16f84.interfaces;
+
+import java.util.List;
+
+public interface ProgramStackInterface {
+    int pop();
+
+    void push(int i);
+
+    void reset();
+
+    int getStackPointer();
+
+    List<Integer> getStack();
+}