--- a/python/ppci/core/value.py	Tue Jan 01 17:17:44 2013 +0100
+++ b/python/ppci/core/value.py	Fri Jan 04 15:25:58 2013 +0100
@@ -1,13 +1,15 @@
 
 class Value:
-   def __init__(self, vty):
-      self.valueType = ty
+   def __init__(self, vty=None):
+      self.valueType = vty
       self.name = None
    def getContext(self):
       return self.valueType.context
    def dump(self):
       print(self)
 
+   def getName(self):
+      return self.name
    def setName(self, name):
       if not self.name and not name:
          return
@@ -17,4 +19,11 @@
          pass
       else:
          pass
+   Name = property(getName, setName)
 
+class Constant(Value):
+   def __init__(self, value, vty):
+      super().__init__(vty)
+      self.value = value
+      print('new constant value: ', value)
+