diff --git a/lib/risc/builtin.rb b/lib/risc/builtin.rb
index b9c48b36..75e763e5 100644
--- a/lib/risc/builtin.rb
+++ b/lib/risc/builtin.rb
@@ -1,4 +1,16 @@
-require_relative "builtin/compile_helper"
+module Risc
+  module Builtin
+    module CompileHelper
+
+      def compiler_for( clazz_name , method_name , arguments , locals = {})
+        frame = Parfait::NamedList.type_for( locals )
+        args = Parfait::NamedList.type_for( arguments )
+        Mom::MethodCompiler.compiler_for_class(clazz_name , method_name , args, frame )
+      end
+    end
+  end
+end
+
 require_relative "builtin/space"
 require_relative "builtin/integer"
 require_relative "builtin/object"
@@ -25,22 +37,23 @@ module Risc
       end
 
       obj_type = space.get_type_by_class_name(:Object)
-      [ :get_internal_word , :set_internal_word , :_method_missing,
-        :exit , :__init__].each do |f|
+      [ :get_internal_word , #:set_internal_word , :_method_missing,
+        #:exit , :__init__
+      ].each do |f|
         compilers << compiler_for( obj_type , Object , f)
       end
 
       word_type = space.get_type_by_class_name(:Word)
       [:putstring , :get_internal_byte , :set_internal_byte ].each do |f|
-        compilers << compiler_for( word_type , Word , f)
+        #compilers << compiler_for( word_type , Word , f)
       end
 
       int_type = space.get_type_by_class_name(:Integer)
       Risc.operators.each do |op|
-        compilers << operator_compiler( int_type , op)
+        #compilers << operator_compiler( int_type , op)
       end
       [:putint, :div4, :div10 , :<,:<= , :>=, :>].each do |f|   #div4 is just a forward declaration
-        compilers << compiler_for( int_type , Integer , f)
+        #compilers << compiler_for( int_type , Integer , f)
       end
       compilers
     end
diff --git a/lib/risc/builtin/compile_helper.rb b/lib/risc/builtin/compile_helper.rb
deleted file mode 100644
index 43a2b93d..00000000
--- a/lib/risc/builtin/compile_helper.rb
+++ /dev/null
@@ -1,14 +0,0 @@
-
-module Risc
-  module Builtin
-    module CompileHelper
-
-      def compiler_for( clazz_name , method_name , arguments , locals = {})
-        frame = Parfait::NamedList.type_for( locals )
-        args = Parfait::NamedList.type_for( arguments )
-        MethodCompiler.compiler_for_class(clazz_name , method_name , args, frame )
-      end
-
-    end
-  end
-end
diff --git a/lib/risc/builtin/object.rb b/lib/risc/builtin/object.rb
index c55909eb..c8870a1b 100644
--- a/lib/risc/builtin/object.rb
+++ b/lib/risc/builtin/object.rb
@@ -8,17 +8,21 @@ module Risc
         # return is stored in return_value
         def get_internal_word( context )
           compiler = compiler_for(:Object , :get_internal_word ,{at: :Integer})
-          compiler.builder(compiler.source).build do
-            object! << message[:receiver]
-            integer! << message[:arguments]
-            integer << integer[Parfait::NamedList.type_length + 0] #"at" is at index 0
-            integer.reduce_int
-            object << object[integer]
-            message[:return_value] << object
-          end
-          compiler.add_mom( Mom::ReturnSequence.new)
+          compiler.add_code GetInternalWord.new("get_internal_word")
           return compiler
         end
+        class GetInternalWord < ::Mom::Instruction
+          def to_risc(compiler)
+            compiler.builder(compiler.source).build do
+              object! << message[:receiver]
+              integer! << message[:arguments]
+              integer << integer[Parfait::NamedList.type_length + 0] #"at" is at index 0
+              integer.reduce_int
+              object << object[integer]
+              message[:return_value] << object
+            end
+          end
+        end
 
         # self[index] = val basically. Index is the first arg , value the second
         # return the value passed in
diff --git a/lib/risc/builtin/space.rb b/lib/risc/builtin/space.rb
index c1c16095..ec638d0f 100644
--- a/lib/risc/builtin/space.rb
+++ b/lib/risc/builtin/space.rb
@@ -8,7 +8,6 @@ module Risc
         # defined here as empty, to be redefined
         def main(context)
           compiler = compiler_for(:Space , :main ,{args: :Integer})
-          compiler.add_mom( Mom::ReturnSequence.new)
           return compiler
         end
 
diff --git a/lib/risc/method_compiler.rb b/lib/risc/method_compiler.rb
index 81f71aca..936175f8 100644
--- a/lib/risc/method_compiler.rb
+++ b/lib/risc/method_compiler.rb
@@ -34,7 +34,7 @@ module Risc
     #
     # return compiler_for_type with the resolved type
     #
-    def self.compiler_for_class( class_name , method_name , args , frame )
+    def self.compiler_for_clazz( class_name , method_name , args , frame )
       raise "create_method #{class_name}.#{class_name.class}" unless class_name.is_a? Symbol
       clazz = Parfait.object_space.get_class_by_name! class_name
       compiler_for_type( clazz.instance_type , method_name , args , frame)
@@ -53,7 +53,7 @@ module Risc
     # args a hash that will be converted to a type
     # the created method is set as the current and the given type too
     # return the compiler
-    def self.compiler_for_type( type , method_name , args , frame)
+    def self.compiler_for_typez( type , method_name , args , frame)
       raise "create_method #{type.inspect} is not a Type" unless type.is_a? Parfait::Type
       raise "Args must be Type #{args}" unless args.is_a?(Parfait::Type)
       raise "create_method #{method_name}.#{method_name.class}" unless method_name.is_a? Symbol
diff --git a/lib/rubyx.rb b/lib/rubyx.rb
index 62cf4f0e..05e9450e 100644
--- a/lib/rubyx.rb
+++ b/lib/rubyx.rb
@@ -1,11 +1,12 @@
 require "rx-file"
 
 require "util/logging"
+require "util/list"
 require_relative "elf/object_writer"
+require_relative "mom/mom"
 require_relative "risc"
 require_relative "arm/arm_machine"
 require_relative "arm/arm_platform"
 require_relative "vool/statement"
 require_relative "ruby"
 require_relative "rubyx/rubyx_compiler"
-require_relative "mom/mom"
diff --git a/test/risc/builtin/helper.rb b/test/risc/builtin/helper.rb
index 68357f88..55dea0ce 100644
--- a/test/risc/builtin/helper.rb
+++ b/test/risc/builtin/helper.rb
@@ -7,5 +7,15 @@ module Risc
       def setup
       end
     end
+    class BootTest < MiniTest::Test
+      def setup
+        Parfait.boot!(Parfait.default_test_options)
+        @functions = Builtin.boot_functions
+      end
+      def get_compiler( name )
+        @functions.each.find{|meth|
+          meth.callable.name == name}
+      end
+    end
   end
 end
diff --git a/test/risc/builtin/test_int_cmp.rb b/test/risc/builtin/test_int_cmp.rb
index e3ed2866..902637c0 100644
--- a/test/risc/builtin/test_int_cmp.rb
+++ b/test/risc/builtin/test_int_cmp.rb
@@ -1,5 +1,6 @@
 require_relative "helper"
 
+# TODO move these to interpreter dir
 module Risc
   module Builtin
     class IntCmp < BuiltinTest
diff --git a/test/risc/builtin/test_object.rb b/test/risc/builtin/test_object.rb
new file mode 100644
index 00000000..f09beb50
--- /dev/null
+++ b/test/risc/builtin/test_object.rb
@@ -0,0 +1,24 @@
+require_relative "helper"
+
+module Risc
+  module Builtin
+    class TestObjectFunction1 < BootTest
+      def setup
+        super
+        @method = get_compiler(:get_internal_word)
+      end
+      def test_has_get_internal
+        assert_equal Mom::MethodCompiler , @method.class
+      end
+      def test_mom_length
+        assert_equal 5 , @method.mom_instructions.length
+      end
+      def test_compile
+        assert_equal Risc::MethodCompiler , @method.to_risc.class
+      end
+      def test_risc_length
+        assert_equal 20 , @method.to_risc.risc_instructions.length
+      end
+    end
+  end
+end
diff --git a/test/risc/test_builtin.rb b/test/risc/test_builtin.rb
index e1b4e020..9f50b286 100644
--- a/test/risc/test_builtin.rb
+++ b/test/risc/test_builtin.rb
@@ -5,18 +5,19 @@ module Risc
 
     def setup
       Parfait.boot!(Parfait.default_test_options)
+      @functions = Builtin.boot_functions
     end
     def test_has_boot_function
-      assert Builtin.boot_functions
+      assert @functions
     end
     def test_boot_function_type
-      assert_equal Array, Builtin.boot_functions.class
+      assert_equal Array, @functions.class
     end
     def test_boot_function_length
-      assert_equal 23, Builtin.boot_functions.length
+      assert_equal 2, @functions.length
     end
     def test_boot_function_first
-      assert_equal MethodCompiler, Builtin.boot_functions.first.class
+      assert_equal Mom::MethodCompiler, @functions.first.class
     end
   end
 end