High-Speed Protocol Implementations: An Experience with PAISS

This paper describes our experience in implementing the OSI transport service, with the focus being on the use of the PASS ("Parallel Activity Specification Scheme") Formal Description Technique (FDT) tools for specification, verification, and semi-automatic code generation. We discuss the results of the experiment from two aspects: (1) efficiency of implementation, and (2) efficiency of the resultant implementation. The PASS tools, recently augmented with a graphical user interface, are described, and their application to the present implementation is outlined.