clean up booting

many machine boot became obsolete
or just neede parfait to boot
actual linker functionality pending

test/parfait/test_space.rb

@@ -97,6 +97,15 @@ module Parfait
     def test_has_next_address
       assert_equal Parfait::ReturnAddress , @space.next_address.next_integer.class
     end
+    def test_address_count
+      addr = @space.get_address
+      count = 0
+      while(addr)
+        count += 1
+        addr = addr.next_integer
+      end
+      assert_equal 10, count
+    end
 
     def test_messages
       mess = @space.first_message

test/parfait/test_word.rb

@@ -4,7 +4,7 @@ module Parfait
   class TestEmptyWord < ParfaitTest
 
     def setup
-      Risc.machine.boot
+      Parfait.boot!
       @word = Parfait::Word.new(0)
     end
     def test_word_create