diff --git a/de/darkress/pic16f84sim/Main.java b/de/darkress/pic16f84sim/Main.java
index dbe245e..7d10664 100644
--- a/de/darkress/pic16f84sim/Main.java
+++ b/de/darkress/pic16f84sim/Main.java
@@ -15,7 +15,7 @@ class Main
         int input1 = 0x27FF;
         program.add(CommandDecoder.decode(0x3011)); //Write 0x11 to W
         Memory.setRegister(0x14, 0x14);
-        program.add(CommandDecoder.decode(0x0594));
+        program.add(CommandDecoder.decode(0x0994));
         for(int i = 0; i < 2; i++)
         {
             program.get(ProgramCounter.getPc()).execute();
diff --git a/de/darkress/pic16f84sim/commands/Comf.java b/de/darkress/pic16f84sim/commands/Comf.java
new file mode 100644
index 0000000..f28c6df
--- /dev/null
+++ b/de/darkress/pic16f84sim/commands/Comf.java
@@ -0,0 +1,27 @@
+package de.darkress.pic16f84sim.commands;
+
+import de.darkress.pic16f84sim.microcontroller.Memory;
+import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
+
+public class Comf extends FileRegisterCommandUtils implements Command
+{
+    private final int address;
+    private final boolean destinationBit;
+
+    public Comf(int input)
+    {
+        address = input & 0x007F;
+        destinationBit = checkDestinationBit(input);
+    }
+
+    @Override
+    public void execute()
+    {
+        int result = 255 - Memory.getRegister(address); // Get inverse of 8Bit value
+
+        checkZeroBit(result);
+
+        writeToDestination(destinationBit, address, result);
+        ProgramCounter.incPC();
+    }
+}
diff --git a/de/darkress/pic16f84sim/decoder/CommandDecoder.java b/de/darkress/pic16f84sim/decoder/CommandDecoder.java
index 9a2318c..972ac57 100644
--- a/de/darkress/pic16f84sim/decoder/CommandDecoder.java
+++ b/de/darkress/pic16f84sim/decoder/CommandDecoder.java
@@ -13,8 +13,7 @@ public class CommandDecoder
             case 0x500:
                 return new Andwf(input);
             case 0x900:
-                //comf();
-                break;
+                return new Comf(input);
             case 0x300:
                 //decf();
                 break;