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Author: Admin | 2025-04-28
Clash is a functional hardware description language that borrows both its syntax and semantics from the functional programming language Haskell. It provides a familiar structural design approach to both combinational and synchronous sequential circuits. The Clash compiler transforms these high-level descriptions to low-level synthesizable VHDL, Verilog, or SystemVerilog.Clash is an open-source project, licensed under the permissive BSD2 license, and actively maintained by QBayLogic. The Clash project is a Haskell Foundation affiliated project.Features Strongly typed Clash is built on Haskell which provides an excellent foundation for well-typed code. Together with Clash's standard library it is easy to build scalable and reusable hardware designs. Interactive REPL Load your designs in an interpreter and easily test all your component without needing to setup a test bench. Low-level access Although Clash offers many features, you sometimes need to directly access VHDL, Verilog, or SystemVerilog directly. Clash allows you to do this with its own templating system. Get the book: Retrocomputing with Clash Haskell has become the functional programming language of choice for many developers due to its excellent tools for abstraction and principled program design. The open source Clash hardware description language now brings these features to FPGA development. Retrocomputing with Clash takes the experienced Haskell programmer on a journey into the world of hardware design with Clash. Our approach is based on using Haskell to its fullest potential, using abstractions like monads and lenses in building a library of reusable components. Implement various retro-computing devices: Pocket calculator Pong (sample chapter) An implementation of
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