some more mocking worked

some didnt

test/risc/position/helper.rb

@@ -9,6 +9,34 @@ module Risc
       4
     end
   end
+  class Machine
+    def set_platform(plat)
+      @platform = plat
+    end
+    def set_translated
+      @translated = true
+      translate_methods( @platform.translator )
+      @cpu_init = risc_init.to_cpu(@platform.translator)
+    end
+  end
+  class DummyPlatform
+    def self.boot
+      machine = Risc.machine.boot
+      machine.set_platform( self.new )
+      machine
+    end
+    def translator
+      DummyTranslator.new
+    end
+    def padding
+      0
+    end
+  end
+  class DummyTranslator
+    def translate(arg)
+      DummyInstruction.new
+    end
+  end
   class DummyInstruction < Dummy
     include Util::List
     def initialize(nekst = nil)
@@ -19,5 +47,11 @@ module Risc
       Position.get(self).trigger_inserted if Position.set?(self)
       ret
     end
+    def assemble(io)
+      io.write_unsigned_int_32(0)
+    end
+    def total_byte_length
+      4
+    end
   end
 end