implemented Call instruction

de/darkress/pic16f84sim/Main.java

@@ -20,6 +20,5 @@ class Main
         program.get(0).execute();
 
         //ProgramCounter.incPC();
-
     }
 }

de/darkress/pic16f84sim/commands/Call.java

@@ -0,0 +1,22 @@
+package de.darkress.pic16f84sim.commands;
+
+import de.darkress.pic16f84sim.microcontroller.Memory;
+import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
+import de.darkress.pic16f84sim.microcontroller.Stack;
+
+public class Call extends CommandUtils implements Command
+{
+    private final int literal;
+
+    public Call(int input)
+    {
+        literal = input & 0x07FF;
+    }
+
+    @Override
+    public void execute()
+    {
+        Stack.push(ProgramCounter.getPc() + 1);
+        ProgramCounter.setPcForGotoCall(literal);
+    }
+}