fix dynamic resolution

was loading self, when it needs to load receiver
some more test (up to the resolve) start working

lib/risc/interpreter.rb

@@ -149,7 +149,6 @@ module Risc
       else
         value = object.get_internal_word( index )
       end
-      #value = value.object_id unless value.is_a? Fixnum
       set_register( @instruction.register , value )
       true
     end