The Student's Guide to VHDL, Second Edition (Systems on Silicon)
The Student's Guide to VHDL is a condensed edition of The Designer's Guide to VHDL, the most widely used textbook on VHDL for digital system modeling. The Student's Guide is targeted as a supplemental reference book for computer organization and digital design courses.
Since publication of the first edition of The Student's Guide, the IEEE VHDL and related standards have been revised. The Designer's Guide has been revised to reflect the changes, so it is appropriate that The Student's Guide also be revised.
In The Student's Guide to VHDL, 2nd Edition, we have included a design case study illustrating an FPGA-based design flow. The aim is to show how VHDL modeling fits into a design flow, starting from high-level design and proceeding through detailed design and verification, synthesis, FPGA place and route, and final timing verification. Inclusion of the case study helps to better serve the educational market. Currently, most college courses do not formally address the details of design flow. Students may be given informal guidance on how to proceed with lab projects. In many cases, it is left to students to work it out for themselves. The case study in The Student's Guide provides a reference design flow that can be adapted to a variety of lab projects.
Why Read This Book
You should read this book if you want a focused, authoritative introduction to VHDL that balances language rules with practical modeling and synthesis advice. It condenses Ashenden's deeper Designer's Guide into a student-friendly format and adds an FPGA design-flow case study so you can see how VHDL fits into real projects.
Who Will Benefit
Students and practicing digital designers who know basic digital logic and want a concise, reliable reference to write synthesizable VHDL and understand how VHDL models map to FPGA flows.
Level: Intermediate — Prerequisites: Basic digital logic (Boolean algebra, combinational/sequential circuits), familiarity with finite state machines and basic programming concepts; no prior VHDL required.
Key Takeaways
- Write clear, synthesizable VHDL for combinational and sequential logic using processes and concurrent statements.
- Model and simulate hardware behaviour correctly and distinguish synthesisable constructs from simulation-only idioms.
- Organize designs with packages, generics, and modular entity/architecture structure for reuse and testability.
- Develop effective testbenches and use simulation/debugging techniques to validate designs before synthesis.
- Follow an FPGA-oriented design flow: synthesis, constraints, fitting, and bitstream generation considerations.
- Apply language attributes, subtype and type design, and common VHDL idioms to implement robust hardware modules.
Topics Covered
- 1. Introduction to VHDL and Hardware Modeling
- 2. Lexical Elements, Identifiers and Basic Types
- 3. Signals, Variables and Assignment Semantics
- 4. Concurrent Statements and Structural Modeling
- 5. Sequential Statements and Process Modeling
- 6. Subprograms, Packages and Reuse Mechanisms
- 7. Data Types, Arrays and Records for Hardware
- 8. Synthesis vs Simulation: Guidelines and Limitations
- 9. Testbench Techniques and Verification Basics
- 10. Attributes, Generics and Configuration Management
- 11. FPGA-based Design Case Study and Design Flow
- 12. Practical Examples, Coding Styles and Troubleshooting
Languages, Platforms & Tools
How It Compares
More compact and classroom-friendly than Ashenden's own The Designer's Guide to VHDL (which is far more exhaustive); more authoritative on language rules than many introductory texts such as Douglas Perry's VHDL Programming by Example, while Perry offers more hands-on, beginner examples.
