Reverse Enginering tool (not in FAQ)

["User" <asn22@mail.nevalink.ru>]

Hi netters,

We would appreciate any reference to an  Ada reverse engineering tool. 

The desired features are:
	*Ada 83, not Ada 95. Therefore, not an OOD tool!!!
	*Capable of reading Ada specifications and producing diagrams from the
specs. Any type
	  of SA diagrams, not OO diagrams. (Hatley, Jourdon, etc. but not UML,
Coad, Raumboagh,etc.)
	*Ideally public domain or shareware product (not a must, though).

Thanks in adavance

N. Mikhailov