Corporate Fact Sheet


Semifore is headquartered in Palo Alto, California.

Company History

Semifore was founded in 2006 and is privately held.

Management Team

Richard Weber, Founder and CEO
Jamsheed Agahi, Founder and VP Quality
Herb Winsted, Vice President, Business Development

Company Overview

Semifore is reshaping the design of hardware/software interfaces for software development and verification. The company’s technology addresses register map hierarchy and complexity. Register maps define the functionality, performance and behavior of chips. As SoC designs reach more than a thousand registers – in some cases millions – on a single chip, Semifore’s technology has risen to the forefront as crucial component to successful design. It provides hardware and software design functionality not available in any other commercial offering or industry standard. It also provides multi-language support and is proven to improve designer productivity and interoperability efficiency as much as 70%.  Markets include Networking, Storage, Semiconductors, Aerospace and Defense, Medical, Computer Hardware and Networking, Security, and Pharmaceutical and Biotech.


Semifore’s  CoStar Design Director™ significantly improves designer productivity and interoperability efficiency as much as 70%.  The CoStar (Configuration Status Register) encompasses three innovations: CSRCompiler™, the CSRSpec™ Language and CSRConfigurator™.  The cornerstone, CSRCompiler is extremely fast, with the capacity to compile thousands of registers in seconds. The CSRSpec language provides a single source to specify register behavior and address map hierarchy of a chip.  A terse and easy to understand language, the language expands to a, high quality RTL ready for design synthesis. The CSRConfigurator fully customizes outputs of the CSRCompiler no matter the application, with no additional scripting or manual intervention needed. Advantages include abilities to produce accurate, concise design descriptions; to lint and integrate clean third-party intellectual property and legacy designs; to generate fast, single source high quality RTL; and to instantly document revisions for each functional team.  CoStar Design Director is easily integrated into internal design flows and commercial tools, and supports industry standards to include IP-XACT, SystemRDL and UVM.