Description: 1. Specification-Modeling Methodologies for Reactive-System Design.- 1.1. Introduction.- 1.2. Characteristics of Reactive Systems.- 1.3. Specification-Modeling Methodology Requirements.- 1.4. Specification-Modeling Methodology for Reactive Systems.- 1.5. A Survey of Methodologies.- 1.6. Summary.- 1.7. Recommendations.- 1.8. Conclusions.- 2. Survey on Languages for Object Oriented Hardware Design Methodologies.- 2.1. Introduction.- 2.2. Introduction to Object-Oriented Design.- 2.3. Possible Approaches.- 3. VSPEC: A Declarative Requirements Specification Language for VHDL.- 3.1. Introduction.- 3.2. Important VHDL Constructs.- 3.3. The VSPEC Clauses.- 3.4. Formal Representation of VSPEC.- 3.5. Extended Example: 16-bit Move Machine.- 3.6. Related Work.- 3.7. Current Status and Future Directions.- 4. Communication Protocols Implemented in Hardware: VHDL Generation from Estelle.- 4.1. Introduction.- 4.2. VHDL versus Estelle Semantics.- 4.3. Estelle to VHDL Translation Model.- 4.4. Conclusions.- 5. An Algorithm for the Translation of SDL into Synthesizable VHDL.- 5.1. Introduction.- 5.2. The SDL Subset.- 5.3. Synthesis Constraints.- 5.4. The Mapping Algorithm.- 5.5. Structure.- 5.6. Data Definition.- 5.7. Process Communication.- 5.8. Process Behaviour.- 5.9. Variable Declaration.- 5.10. Example of Implementation.- 5.11. Conclusion.- 6. From LOTOS to VHDL.- 6.1. Introduction.- 6.2. Languages.- 6.3. Translation.- 6.4. Conclusion.- 6.5. Appendix: A Complete Example.- 7. Using an X-Machine to Model a Video Cassette Recorder.- 7.1. Introduction.- 7.2. The Basic Model.- 7.3. Extending the Machine to handle Fast-forward and Rewind Operations.- 7.4. Programming the VCR.- 7.5. Combining the Parts of the Model.- 7.6. Adding a Model of the Video Tape.- 7.7. Animation and Execution of theSpecification.- 7.8. Verification Issues.- 7.9. Evaluation and Conclusion.

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