seperate position create and register

many test fixes

test/arm/test_logic.rb

@@ -82,7 +82,7 @@ module Arm
     end
     def test_too_big_add
       code = @machine.add	 :r1 , :r1, 0x222
-      Risc::Position.new(code,0)
+      Risc::Position.create(code).set(0)
       # add 0x02 (first instruction) and then 0x220 shifted
       assert_code code , :add , [0x02,0x1c,0x91,0xe2] #e2 91 1e 02
       # added extra instruction to add "extra"
@@ -91,14 +91,14 @@ module Arm
 
     def label( pos = 0x22 + 8)
       label  = Risc::Label.new("some" , "Label" , FakeAddress.new(pos))
-      Risc::Position.new(label , pos)
+      Risc::Position.create(label).set(pos)
       #Risc::Position.set(l , pos , @binary)
       label
     end
 
     def test_move_object
       code = @machine.add( :r1 , label)
-      Risc::Position.new(code,0)
+      Risc::Position.create(code).set(0)
       assert_code code , :add , [0x22,0x10,0x9f,0xe2] #e2 9f 10 22
     end