groundwork for interpreter platform

especially positioning makes the previous interpreter approach to
fragile (too far off the real thing)
Interpreter should be it’s own platform (still use the risc
instructions),
get a translator and use positions

test/risc/test_machine.rb

@@ -21,6 +21,7 @@ module Risc
   class TestMachinePositions < MiniTest::Test
     def setup
       @machine = Risc.machine.boot
+      @machine.translate(:arm)
       @machine.position_all
     end
     def test_has_positions
@@ -32,6 +33,7 @@ module Risc
   class TestMachineInit < MiniTest::Test
     def setup
       @machine = Risc.machine.boot
+      @machine.translate(:arm)
       @machine.position_all
       @machine.create_binary
     end

test/risc/test_text_writer.rb

@@ -18,6 +18,7 @@ module Risc
 
     def setup
       @machine = Risc.machine.boot
+      @machine.translate(:arm)
       @machine.position_all
       @text_writer = TextWriter.new(@machine)
     end

test/risc/test_translator.rb

@@ -17,10 +17,11 @@ module Risc
     end
 
     def test_translate_space
-      assert @machine.translate_arm
+      assert @machine.translate(:arm)
     end
 
     def test_no_loops_in_chain
+      @machine.translate(:arm)
       @machine.position_all
       init = Parfait.object_space.get_init
       all = []
@@ -30,6 +31,7 @@ module Risc
       end
     end
     def test_no_risc #by assembling, risc doesnt have assemble method
+      @machine.translate(:arm)
       @machine.position_all
       @machine.objects.each do |id , method|
         next unless method.is_a? Parfait::TypedMethod