diff --git a/lib/ast/function_expression.rb b/lib/ast/function_expression.rb
index 3307f29c..880d4262 100644
--- a/lib/ast/function_expression.rb
+++ b/lib/ast/function_expression.rb
@@ -8,7 +8,7 @@ module Ast
       end
       r = receiver ? receiver.compile(method,message) : Virtual::Self.new()
       new_method = Virtual::CompiledMethod.new(name , args , r )
-      new_method.class_name = r.is_a?(BootClass) ? r.name : method.class_name
+      new_method.class_name = r.is_a?(Virtual::BootClass) ? r.name : method.class_name
       clazz = Virtual::BootSpace.space.get_or_create_class(new_method.class_name)
       clazz.add_instance_method new_method
 
diff --git a/lib/register/assembler.rb b/lib/register/assembler.rb
index 051f8ad3..10f582ce 100644
--- a/lib/register/assembler.rb
+++ b/lib/register/assembler.rb
@@ -25,7 +25,7 @@ module Register
 
     def assemble_object object
       slot = get_slot(object)
-      raise "Object not linked #{object_id}" unless slot
+      raise "Object not linked #{object_id}=>#{object.class}" unless slot
       if object.is_a? Instruction
         object.assemble( @stream , self )
       else
@@ -34,14 +34,37 @@ module Register
       end
     end
 
+    def write_ref object
+      slot = @linker.get_slot(object)
+      raise "Object not linked #{object.inspect}" unless slot
+      @stream.write_uint32 slot.position
+    end
+
+    # assemble the instance variables of the object
+    def assemble_self( object )
+      slot = @linker.get_slot(object)
+      raise "Object not linked #{object.inspect}" unless slot
+      layout = slot.layout
+      @stream.write_uint32( 0 ) #TODO
+      @stream.write_uint32( slot.position ) #ref
+      layout.each do |name|
+        write_ref(name)
+      end
+    end
+
+    def assemble_Hash hash
+      assemble_self( hash )
+      hash.each do |key , val|
+        assemble_object(key)
+        assemble_object(val)
+      end
+    end
+
     def assemble_BootSpace(space)
       # assemble in the same order as linked
-      space.classes.values.each do |cl|
-        assemble_object(cl)
-      end
-      space.objects.each do |o|
-        assemble_object(o)
-      end
+      assemble_object(space.classes)
+      assemble_object(space.objects)
+      assemble_self(space)
     end
 
     def assemble_BootClass(clazz)
diff --git a/lib/register/linker.rb b/lib/register/linker.rb
index 8903e3cd..1a4e128a 100644
--- a/lib/register/linker.rb
+++ b/lib/register/linker.rb
@@ -1,10 +1,11 @@
 module Register
   class LinkSlot
-    def initialize at
+    def initialize position
       @position = position
+      raise "Nil not is not an allowed position" unless position  
       @length = 0
     end
-    attr_accessor :position , :length
+    attr_accessor :position , :length , :layout
   end
   class Linker
     def initialize
@@ -24,6 +25,7 @@ module Register
       if object.is_a? Instruction
         length = 4
       else
+        slot.layout =  layout_for(object)
         clazz = object.class.name.split("::").last
         length = send("link_#{clazz}".to_sym , object , at)
       end
@@ -31,6 +33,28 @@ module Register
       length
     end
 
+    def layout_for(object)
+      case object
+      when Array , Symbol , String , Virtual::CompiledMethod , Virtual::Block , Virtual::StringConstant
+        { :names => [] , :types => []}
+      when Hash
+        { :names => [:keys,:values] , :types => [Virtual::Reference,Virtual::Reference]}
+      when Virtual::BootClass
+        { :names => [:name , :super_class_name , :instance_methods] , :types => [Virtual::Reference,Virtual::Reference,Virtual::Reference]}
+      when Virtual::BootSpace
+        { :names => [:classes,:objects] , :types => [Virtual::Reference,Virtual::Reference]}
+      else
+        raise "linker encounters unknown class #{object.class}"
+      end
+    end
+
+    def link_self(object , at)
+      slot = @objects[object.object_id]
+      layout = slot.layout
+      length = link_object(layout[:names] , at)
+      length + members( layout[:names].length) # 2 for type and layout
+    end
+
     def link_Array( array , at)
       length = 0
       array.each do |elem| 
@@ -40,17 +64,24 @@ module Register
       members(length)
     end
 
+    def link_Hash( hash , at)
+      length = link_object(hash.keys , at)
+      length += link_object(hash.values , at + length)
+      length += link_self(hash , at + length)
+      members(length)
+    end
+
     def link_BootSpace(space , at)
-      length = members( 2 )
-      length += link_Array( space.classes.values , at + length )
-      length + link_Array(space.objects , at + length)
+      length = link_object( space.classes , at + length )
+      length += link_object(space.objects , at + length)
+      length + members( 2 )
     end
 
     def link_BootClass(clazz , at)
-      length = members(3)
-      length += link_object(clazz.name , at + length)
+      length = link_object(clazz.name , at + length)
       length += link_object(clazz.super_class_name , at + length)
-      length + link_Array(clazz.instance_methods , at + length)
+      length += link_object(clazz.instance_methods , at + length)
+      length + members(3)
     end
 
     def link_CompiledMethod(method , at)
diff --git a/lib/salama.rb b/lib/salama.rb
index 9b770557..e2d37f7b 100644
--- a/lib/salama.rb
+++ b/lib/salama.rb
@@ -7,3 +7,4 @@ require "virtual/machine"
 require "ast/all"
 require "sof/all"
 require "register/register_machine"
+require_relative "stream_reader"
\ No newline at end of file
diff --git a/lib/virtual/boot_class.rb b/lib/virtual/boot_class.rb
index ce0fb841..0346e72f 100644
--- a/lib/virtual/boot_class.rb
+++ b/lib/virtual/boot_class.rb
@@ -1,5 +1,7 @@
-require "virtual/meta_class"
+require_relative "meta_class"
 
+module Virtual
+  
   # class is mainly a list of methods with a name (for now)
   # layout of object is seperated into Layout
   class BootClass < Virtual::ObjectConstant
@@ -41,3 +43,5 @@ require "virtual/meta_class"
     end
 
   end
+
+end
\ No newline at end of file
diff --git a/lib/virtual/boot_space.rb b/lib/virtual/boot_space.rb
index 917225f2..a08db2ed 100644
--- a/lib/virtual/boot_space.rb
+++ b/lib/virtual/boot_space.rb
@@ -1,4 +1,4 @@
-require "virtual/boot_class"
+require_relative "boot_class"
 require "builtin/object"
 
 module Virtual