Overview

Questa Check X

An undefined signal at a critical control junction in a design, or a register unexpectedly loaded with garbage, can quickly cascade into a perplexing, show-stopping issue. Unfortunately, the handling ‘X’ level signals differ in logic synthesis and simulation.


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Engineer using Questa Check Register Tool on his two monitors
Key features

Questa automated X-state verification

The automated Questa Check X app is designed to automatically employ formal analysis to exhaustively identify ‘X’ propagation issues in your design, taking your RTL and a spec of your initialization sequence as input.

Formal Verification

Featured white papers

Formal verification

Upcoming and on-demand events

View all available Formal Verification video recordings at the Verification Academy.

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Verification Academy

Verification Academy provides the skills necessary to mature an organization's functional verification process capabilities, providing a methodological bridge between high-level value propositions and the low-level details.

Verification Horizons blog

Insight and updates on concepts, values, standards, methodologies, and examples to assist with the understanding of what advanced functional verification technologies can do and how to most effectively apply them.

Verification Horizons

The Verification Horizons publication provides concepts, values, methodologies and examples to assist with the understanding of what advanced functional verification technologies can do and how to most effectively apply them.