implemented Goto Instruction; Increment ProgramCounter;

de/darkress/pic16f84sim/Main.java

@@ -12,14 +12,14 @@ class Main
     public static void main(String[] args) {
 
         ArrayList<Command> program = new ArrayList<>();
-        int input1 = 0x27FF;
-        program.add(CommandDecoder.decode(0x3011));
-        program.add(CommandDecoder.decode(0x2003));
-        program.add(CommandDecoder.decode(0x3022));
-        program.add(CommandDecoder.decode(0x0008));
-        while(true)
-        {
-            program.get(ProgramCounter.getPc()).execute();
-        }
+        Memory.workingRegister = 0xAA;
+        int input1 = 0x2FFF;
+        program.add(CommandDecoder.decode(input1));
+
+        Memory.setPCLATH(0xFF);
+        program.get(0).execute();
+
+        //ProgramCounter.incPC();
+
     }
 }

de/darkress/pic16f84sim/commands/Call.java

@@ -1,21 +0,0 @@
-package de.darkress.pic16f84sim.commands;
-
-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.setPcFrom11BitLiteral(literal);
-    }
-}

de/darkress/pic16f84sim/commands/Goto.java

@@ -1,5 +1,6 @@
 package de.darkress.pic16f84sim.commands;
 
+import de.darkress.pic16f84sim.microcontroller.Memory;
 import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
 
 public class Goto extends CommandUtils implements Command
@@ -14,6 +15,6 @@ public class Goto extends CommandUtils implements Command
     @Override
     public void execute()
     {
-        ProgramCounter.setPcFrom11BitLiteral(literal);
+        ProgramCounter.setPcForGotoCall(literal);
     }
 }

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

@@ -1,15 +0,0 @@
-package de.darkress.pic16f84sim.commands;
-
-import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
-import de.darkress.pic16f84sim.microcontroller.Stack;
-
-public class Return extends CommandUtils implements Command
-{
-    @Override
-    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

@@ -100,7 +100,8 @@ public class CommandDecoder
         switch(input & 0x3800)
         {
             case 0x2000:
-                return new Call(input);
+                //call();
+                break;
             case 0x2800:
                 return new Goto(input);
         }
@@ -110,7 +111,8 @@ public class CommandDecoder
             case 0x3000:
                 return new Movlw(input);
             case 0x3400:
-                return new Retlw(input);
+                //retlw();
+                break;
         }
 
         if ((input | 0x0060) == 0x0060)
@@ -130,7 +132,8 @@ public class CommandDecoder
 
         if (input == 0x0008)
         {
-            return new Return();
+            //return();
+            //This is the function name. Do not mistake this for a normal return!
         }
 
         if (input == 0x0063)

de/darkress/pic16f84sim/microcontroller/ProgramCounter.java

@@ -11,7 +11,7 @@ public class ProgramCounter
         return pc;
     }
 
-    public static void setPcFrom11BitLiteral(int data)
+    public static void setPcForGotoCall(int data)
     {
         int pcl = data & 0x00FF;
         int pch = Memory.getPCLATH();

de/darkress/pic16f84sim/microcontroller/Stack.java

@@ -14,8 +14,9 @@ public class Stack
 
     public static int pop()
     {
+        int tmp = stack[stackPointer];
         pointPrevious();
-        return stack[stackPointer];
+        return tmp;
     }
 
     public static int peek()