implemented return instruction; Fixed Bug in Stack.pop()

de/darkress/pic16f84sim/commands/Retlw.java

@@ -1,24 +0,0 @@
-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 Retlw extends CommandUtils implements Command
-{
-    private final int literal;
-
-    public Retlw(int input)
-    {
-        literal = input & 0x00FF;
-    }
-
-    @Override
-    public void execute()
-    {
-        Memory.workingRegister = literal;
-        ProgramCounter.setPcFrom11BitLiteral(Stack.pop());
-        //TODO: This may need some rework since it does not really load all 13 Bit into the PC. Only 8 Bit are
-        // effectively set
-    }
-}

de/darkress/pic16f84sim/commands/Return.java

@@ -9,7 +9,5 @@ public class Return extends CommandUtils implements Command
     public void execute()
     {
         ProgramCounter.setPcFrom11BitLiteral(Stack.pop());
-        //TODO: This may need some rework since it does not really load all 13 Bit into the PC. Only 8 Bit are
-        // effectively set
     }
 }

de/darkress/pic16f84sim/decoder/CommandDecoder.java

@@ -110,7 +110,8 @@ public class CommandDecoder
             case 0x3000:
                 return new Movlw(input);
             case 0x3400:
-                return new Retlw(input);
+                //retlw();
+                break;
         }
 
         if ((input | 0x0060) == 0x0060)