PSS 3.1 Public Review Now Open

The Portable Stimulus Standard (PSS) 3.1 Draft Standard is available for public review, giving the design and verification community an opportunity to review the latest enhancements to PSS and provide feedback before its release.

PSS 3.1 is a focused release that builds on the capabilities of PSS 3.0, with updates concentrated in four key areas:

• A stronger constraint language – Enhancements that provide greater flexibility and control when defining constraints.
• More reusable libraries – Improvements that make it easier to create practical, reusable PSS libraries that can be shared across projects and teams.
• Greater control over generated target code – New capabilities that give models more control over what is produced for target implementations.
• Address spaces and registers – Updates that close gaps and strengthen modeling capabilities in the address and register layer.

The public review provides an opportunity for the industry to evaluate the specification and provide feedback before it is finalized. The Portable Stimulus Working Group invites comments and feedback through its Community Forum.

The document is available for download at Accellera's Drafts Under Public Review page. The public review period is open until September 30, 2026. For more information about PSS and the development of the standard, visit the Portable Stimulus Working Group page.

 

PSS Training Session 15 Now Available!

How Does Portable Stimulus Data Coverage Help Measure Verification Quality?

In Session 15 of Accellera’s “Learning PSS” video series, Tom Fitzpatrick, PSS expert and charter member of Accellera’s Portable Stimulus Working Group, explores PSS data coverage and how it can be used to track critical values and ranges, measure scenario quality, and help ensure required verification scenarios are exercised.

In this session, you’ll learn:

• How cover groups, cover points, and bins turn model values into meaningful coverage goals
• How different types of bins can categorize, filter, ignore, or identify illegal values
• How to create reusable cover groups that can be applied across actions and other model elements
• How cross-coverage tracks combinations of values and identifies which scenario combinations have been exercised
• How PSS determines when coverage is sampled for actions, data flow objects, resources, and structs
• How IFF expressions can control when values contribute to coverage
• How coverage options help manage reporting, bin behavior, and the relative importance of coverage goals
• How data coverage can help evaluate the quality of generated scenarios and determine whether verification goals are being exercised

Watch Session 15 to learn how PSS data coverage helps turn generated scenarios into measurable verification progress.

Stay tuned for session 16 which takes a look back across the series and reviews some of the key concepts in Portable Stimulus.

For details about PSS and other resources, visit the Portable Stimulus Working Group page.

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