diff --git a/Gemfile b/Gemfile
index 4d21399b..236f8ff3 100644
--- a/Gemfile
+++ b/Gemfile
@@ -5,7 +5,8 @@ gem "rubyx" , :path => "."
 gem "rake"
 gem "rye"
 
-gem "rx-file" , :git => "https://github.com/ruby-x/rx-file"
+gem "rx-file" , git: "https://github.com/ruby-x/rx-file"
+#gem "rx-file" , path: "../rx-file"
 
 group :test do
   gem "codeclimate-test-reporter" , require: false
diff --git a/Gemfile.lock b/Gemfile.lock
index 6646d17b..8242caa3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -104,4 +104,4 @@ DEPENDENCIES
   thor (= 0.19.1)
 
 BUNDLED WITH
-   1.15.4
+   1.16.1
diff --git a/lib/elf/object_writer.rb b/lib/elf/object_writer.rb
index be617179..806a53ad 100644
--- a/lib/elf/object_writer.rb
+++ b/lib/elf/object_writer.rb
@@ -24,12 +24,12 @@ module Elf
 
       # for debug add labels for labels
       Parfait.object_space.each_type do |type|
-        type.each_method do |f|
-          f.cpu_instructions.each do |label|
+        type.each_method do |meth|
+          meth.cpu_instructions.each do |label|
             next unless label.is_a?(Risc::Label)
-            add_symbol "#{type.name}@#{f.name}:#{label.name}" , Risc::Position.get(label).at
+            add_symbol "#{type.name}@#{meth.name}:Label=#{label.name}" , Risc::Position.get(label).at
           end
-          f.binary.each do |code|
+          meth.binary.each do |code|
             label = "BinaryCode@#{Risc::Position.get(code).method.name}"
             add_symbol label , Risc::Position.get(code).at
           end
@@ -38,8 +38,8 @@ module Elf
 
       @machine.objects.each do |id,slot|
         next if slot.is_a?(Parfait::BinaryCode)
-        if( slot.respond_to? :sof_reference_name )
-          label = "#{slot.sof_reference_name}"
+        if( slot.respond_to? :rxf_reference_name )
+          label = "#{slot.rxf_reference_name}"
         else
           label = "#{slot.class.name}::#{Risc::Position.get(slot)}"
         end
diff --git a/lib/parfait/binary_code.rb b/lib/parfait/binary_code.rb
index e0b1d0de..0767c802 100644
--- a/lib/parfait/binary_code.rb
+++ b/lib/parfait/binary_code.rb
@@ -13,7 +13,7 @@ module Parfait
       super()
       extend_to(total_size)
       #puts "Init with #{total_size} for #{object_id}"
-      (1..(data_length+1)).each{ |index| set_word(index , 0) }
+      (0 ..(data_length)).each{ |index| set_word(index , 0) }
     end
     def extend_to(total_size)
       if total_size > self.data_length
@@ -26,7 +26,7 @@ module Parfait
       #puts "extending #{total_size - data_length} in #{self}"
       Risc::Position.reset(self) if Risc::Position.set?(self)
     end
-    
+
     def each( &block )
       block.call( self )
       @next.each( &block ) if @next
@@ -37,13 +37,13 @@ module Parfait
     end
 
     def each_word
-      index = 1
-      while( index <= data_length)
+      index = 0
+      while( index < data_length)
         yield get_word(index)
         index += 1
       end
     end
-    #16 - 2 -1 , two instance varaibles and one for the jump
+    #16 - 2 -1 , two instance variables and one for the jump
     def data_length
       13
     end
@@ -51,8 +51,8 @@ module Parfait
       4*data_length
     end
     def set_word(index , word)
-      raise "invalid index #{index}" if index < 1
-      if index > data_length + 1
+      raise "invalid index #{index}" if index < 0
+      if index > data_length
         #raise "invalid index #{index}" unless @next
         extend_to( index )
         @next.set_word( index - data_length , word)
@@ -60,7 +60,7 @@ module Parfait
       set_internal_word(index + 2 , word)
     end
     def get_word(index)
-      raise "invalid index #{index}" if index < 1
+      raise "invalid index #{index}" if index < 0
       if index > data_length + 1
         raise "invalid index #{index}" unless @next
         return @next.get_word( index - data_length)
diff --git a/lib/parfait/list.rb b/lib/parfait/list.rb
index cbeee83c..88148b38 100644
--- a/lib/parfait/list.rb
+++ b/lib/parfait/list.rb
@@ -266,7 +266,7 @@ module Parfait
       array = []
       index = 0
       while( index < self.get_length)
-        array[index - 1] = get(index)
+        array[index] = get(index)
         index = index + 1
       end
       array
diff --git a/lib/risc/boot.rb b/lib/risc/boot.rb
index 0fea24a4..9bc87690 100644
--- a/lib/risc/boot.rb
+++ b/lib/risc/boot.rb
@@ -40,7 +40,7 @@ module Risc
     #
     # The way out is to build empty shell objects and stuff the neccessary data into them
     #  (not use the normal initialize way)
-    #  (PPS: The "real" solution is to read a sof graph and not do this by hand
+    #  (PPS: The "real" solution is to read a rx-file graph and not do this by hand
     #    That graph can be programatically built and written (with this to boot that process :-))
 
     # There are some helpers below, but the roadmap is something like:
@@ -60,7 +60,7 @@ module Risc
       Parfait.set_object_space( space )
 
       #puts Sof.write(space)
-      boot_functions( space )
+      #boot_functions( space )
     end
 
     # types is where the snake bites its tail. Every chain ends at a type and then it
@@ -98,7 +98,8 @@ module Risc
       classes = Parfait::Dictionary.new
       type_names.each do |name , vars|
         super_c = super_class_names[name] || :Object
-        classes[name] = Parfait::Class.new(name , super_c , types[name] )
+        clazz = Parfait::Class.new(name , super_c , types[name] )
+        classes[name] = clazz
       end
       classes
     end
diff --git a/lib/risc/collector.rb b/lib/risc/collector.rb
index 6b27df8e..15d1efcc 100644
--- a/lib/risc/collector.rb
+++ b/lib/risc/collector.rb
@@ -45,8 +45,8 @@ module Risc
 
     def self.message(object , depth)
       msg =  "adding #{depth}#{' ' * depth}:"
-      if( object.respond_to?(:sof_reference_name))
-        msg + object.sof_reference_name.to_s
+      if( object.respond_to?(:rxf_reference_name))
+        msg + object.rxf_reference_name.to_s
       else
         msg + object.class.name
       end
diff --git a/lib/risc/instructions/label.rb b/lib/risc/instructions/label.rb
index 7d5e30a5..4cd7f1c4 100644
--- a/lib/risc/instructions/label.rb
+++ b/lib/risc/instructions/label.rb
@@ -22,7 +22,7 @@ module Risc
       class_source "#{@name} (next: #{self.next.class.name.split("::").last})"
     end
 
-    def sof_reference_name
+    def rxf_reference_name
       @name
     end
 
diff --git a/lib/risc/instructions/load_constant.rb b/lib/risc/instructions/load_constant.rb
index 33e35621..982e92d5 100644
--- a/lib/risc/instructions/load_constant.rb
+++ b/lib/risc/instructions/load_constant.rb
@@ -24,8 +24,8 @@ module Risc
       when String , Symbol
         @constant.to_s
       else
-        if( @constant.respond_to? :sof_reference_name )
-          constant.sof_reference_name
+        if( @constant.respond_to? :rxf_reference_name )
+          constant.rxf_reference_name
         else
           constant.class.name.to_s
         end
diff --git a/lib/risc/instructions/setter.rb b/lib/risc/instructions/setter.rb
index 97100ba1..a86c45bc 100644
--- a/lib/risc/instructions/setter.rb
+++ b/lib/risc/instructions/setter.rb
@@ -21,7 +21,7 @@ module Risc
       @register = register
       @array = array
       @index = index
-      raise "index 0 " if index == 0
+      raise "index 0 " if index < 0
       raise "Not integer or reg #{index}" unless index.is_a?(Numeric) or RiscValue.look_like_reg(index)
       raise "Not register #{register}" unless RiscValue.look_like_reg(register)
       raise "Not register #{array}" unless RiscValue.look_like_reg(array)
diff --git a/lib/risc/position/instruction_position.rb b/lib/risc/position/instruction_position.rb
index 1c02d977..3ac2e455 100644
--- a/lib/risc/position/instruction_position.rb
+++ b/lib/risc/position/instruction_position.rb
@@ -24,7 +24,7 @@ module Risc
       end
       def init(at)
         diff = at - Position.get(@binary).at
-        if( diff % 60 == 13*4)
+        if( diff % 60 == 12*4)
           @binary.extend_one unless @binary.next
           @binary = @binary.next
           raise "end of line " unless @binary
diff --git a/lib/risc/risc_value.rb b/lib/risc/risc_value.rb
index b716202c..1fd1d4cd 100644
--- a/lib/risc/risc_value.rb
+++ b/lib/risc/risc_value.rb
@@ -52,7 +52,7 @@ module Risc
       RiscValue.new( sym , type, value)
     end
 
-    def sof_reference_name
+    def rxf_reference_name
       @symbol
     end
 
diff --git a/lib/risc/text_writer.rb b/lib/risc/text_writer.rb
index dda7cd30..6d3c5b64 100644
--- a/lib/risc/text_writer.rb
+++ b/lib/risc/text_writer.rb
@@ -16,8 +16,6 @@ module Risc
     include Logging
     log_level :info
 
-    MARKER = 0xBAD4C0DE
-
     def initialize(machine)
       @machine = machine
     end
@@ -134,7 +132,6 @@ module Risc
     end
 
     def write_object_variables(object)
-      @stream.write_signed_int_32( MARKER  )
       written = 0 # compensate for the "secret" marker
       object.get_instance_variables.each do |var|
         inst = object.get_instance_variable(var)
@@ -147,7 +144,6 @@ module Risc
     end
 
     def write_data4( code )
-      @stream.write_signed_int_32( MARKER  )
       write_ref_for( code.get_type )
       log.debug "Data4 witten stream 0x#{@stream.length.to_s(16)}"
     end
@@ -160,7 +156,6 @@ module Risc
     end
 
     def write_BinaryCode( code )
-      @stream.write_signed_int_32( MARKER  )
       write_ref_for( code.get_type )
       write_ref_for( code.next )
       code.each_word do |word|
@@ -180,7 +175,6 @@ module Risc
     end
 
     def write_checked_string(string, str)
-      @stream.write_signed_int_32( MARKER  )
       write_ref_for( string.get_type ) #ref
       @stream.write_signed_int_32( str.length  ) #int
       @stream.write str
@@ -210,7 +204,7 @@ module Risc
     # pad_after is always in bytes and pads (writes 0's) up to the next 8 word boundary
     def pad_after( length )
       before = stream_position
-      pad = Padding.padding_for(length) - 4  # four is for the MARKER we write
+      pad = Padding.padding_for(length)
       pad.times do
         @stream.write_unsigned_int_8(0)
       end
diff --git a/test/mom/assign/test_assign_arg_const.rb b/test/mom/assign/test_assign_arg_const.rb
index 51fe3d3e..7b61645c 100644
--- a/test/mom/assign/test_assign_arg_const.rb
+++ b/test/mom/assign/test_assign_arg_const.rb
@@ -25,7 +25,7 @@ module Risc
     def test_load_args_from_message
       produced = produce_body
       assert_equal :r0 , produced.next.array.symbol , produced.next.to_rxf
-      assert_equal 9 , produced.next.index , produced.next.to_rxf
+      assert_equal 8 , produced.next.index , produced.next.to_rxf
     end
 
   end
diff --git a/test/mom/assign/test_assign_local_false.rb b/test/mom/assign/test_assign_local_false.rb
index 5908f71b..7a542131 100644
--- a/test/mom/assign/test_assign_local_false.rb
+++ b/test/mom/assign/test_assign_local_false.rb
@@ -21,12 +21,12 @@ module Risc
     def test_frame_load
       produced = produce_body
       assert_equal :Message , produced.next(1).array.type
-      assert_equal 4 , produced.next(1).index # 4 is frame
+      assert_equal 3 , produced.next(1).index # 3 is frame
     end
     def test_value_load
       produced = produce_body
       assert_equal produced.next(2).register , produced.register
-      assert_equal 2 , produced.next(2).index #type == 1 , r == 2
+      assert_equal 1 , produced.next(2).index #type == 0 , r == 1
     end
 
   end
diff --git a/test/mom/assign/test_assign_local_int.rb b/test/mom/assign/test_assign_local_int.rb
index 8c6cd83f..fc305355 100644
--- a/test/mom/assign/test_assign_local_int.rb
+++ b/test/mom/assign/test_assign_local_int.rb
@@ -21,12 +21,12 @@ module Risc
     def test_frame_load
       produced = produce_body
       assert_equal :Message , produced.next(1).array.type
-      assert_equal 4 , produced.next(1).index # 4 is frame
+      assert_equal 3 , produced.next(1).index # 4 is frame
     end
     def test_value_load
       produced = produce_body
       assert_equal produced.next(2).register , produced.register
-      assert_equal 2 , produced.next(2).index #type == 1 , r == 2
+      assert_equal 1 , produced.next(2).index #type == 1 , r == 2
     end
 
   end
diff --git a/test/parfait/test_binary_code.rb b/test/parfait/test_binary_code.rb
index 9b1f2d20..8f41aab6 100644
--- a/test/parfait/test_binary_code.rb
+++ b/test/parfait/test_binary_code.rb
@@ -53,7 +53,7 @@ module Parfait
     end
     def test_nilled
       assert_equal 0 , @code.get_word(1)
-      assert_equal 0 , @code.get_word(14)
+      assert_equal 0 , @code.get_word(13)
     end
     def test_get_set_self
       @code.set_word(10,1)
@@ -86,11 +86,11 @@ module Parfait
       assert_equal 13 , len
     end
     def test_each_set
-      (1..13).each{|i| @code.set_word(i,i)}
+      (0..12).each{|i| @code.set_word(i,i)}
       all = []
       @code.each_word{ |w| all << w}
-      assert_equal 1 , all.first
-      assert_equal 13 , all.last
+      assert_equal 0 , all.first
+      assert_equal 12 , all.last
     end
     def test_set_word
       assert_equal 1 , @code.set_word(1 , 1)
diff --git a/test/parfait/test_list.rb b/test/parfait/test_list.rb
index 162471ed..d682cd29 100644
--- a/test/parfait/test_list.rb
+++ b/test/parfait/test_list.rb
@@ -180,5 +180,10 @@ module Parfait
       end
       assert_equal 2 , counter
     end
+    def test_to_a
+      arr = @list.to_a
+      assert_equal Array , arr.class
+      assert_equal 3 , arr.length
+    end
   end
 end