diff --git a/app/main/controllers/main_controller.rb b/app/main/controllers/main_controller.rb
index d854f33..aef52a3 100644
--- a/app/main/controllers/main_controller.rb
+++ b/app/main/controllers/main_controller.rb
@@ -12,16 +12,16 @@ module Main
       init_blocks
     end
 
-    def about
-      # Add code for when the about view is loaded
+    def tick
+      @interpreter.tick
     end
 
     private
     def init_machine
       machine = Virtual.machine.boot
-      machine.run_before "Register::CallImplementation"
       code = Ast::ExpressionList.new( [Ast::CallSiteExpression.new(:putstring, [] ,Ast::StringExpression.new("Hello again"))])
       Virtual::Compiler.compile( code , machine.space.get_main )
+      machine.run_before "Register::CallImplementation"
       @interpreter = Interpreter.new
       @interpreter.start machine.init
     end
diff --git a/app/main/models/blocks_model.rb b/app/main/models/blocks_model.rb
index 812999f..05fd0d5 100644
--- a/app/main/models/blocks_model.rb
+++ b/app/main/models/blocks_model.rb
@@ -1,8 +1,10 @@
 class BlocksModel < Volt::ArrayModel
 
   def instruction_changed old , ins
-    self.last._class_name = "" if( page._blocks.length > 0)
-    self << { :name => ins.to_s , :class_name => "active" }
+    self.last._class_name = "inactive" if( self.length > 0)
+    self << { :name => ins.to_s , :class_name => "bright" }
+    puts "block #{self.length}"
+    self.delete_at(0) if( self.length > 5)
   end
 
 end
diff --git a/app/main/models/register_model.rb b/app/main/models/register_model.rb
index c54ccf4..e6d2bd1 100644
--- a/app/main/models/register_model.rb
+++ b/app/main/models/register_model.rb
@@ -3,7 +3,7 @@ class RegisterModel < Volt::Model
   field :value
 
   def register_changed reg , old , ins
-    self.last._class_name = "" if( page._blocks.length > 0)
+    self.last._class_name = "" if( self.length > 0)
     self << { :name => ins.to_s , :class_name => "active" }
   end
 
diff --git a/app/main/views/main/index.html b/app/main/views/main/index.html
index 7a01b7d..c2c5930 100644
--- a/app/main/views/main/index.html
+++ b/app/main/views/main/index.html
@@ -28,13 +28,14 @@
       </div>
       {{ page._blocks.each do |b| }}
         <div class="{{b._class_name}}">
-          {{b._string}}
+          {{b._name}}
+        </div>
       {{ end }}
     </div>
 
     <div class="status-view">
       <div>
-        button.bright { "next" }.on(:click) { interpreter.tick }
+        <button e-click="tick">Next</button>
       </div>
       <div>
         <h4> Status </h4>
diff --git a/models/block_model.rb b/models/block_model.rb
deleted file mode 100644
index f61e8bc..0000000
--- a/models/block_model.rb
+++ /dev/null
@@ -1,13 +0,0 @@
-
-# represent a block and hold the actual instance (as transient)
-
-class BlockModel < Volt::Model
-  field :name
-  attr_accessor :block
-
-  def initialize(b)
-    super()
-    @block = b
-    self.name = b.nil? ? 'undefined' : b.name
-  end
-end