Questa
Functional coverage decides whether you dare tape out
Questa is a digital functional verification platform providing simulation, formal verification, coverage analysis and debug — the daily tool of chip verification engineers.
The most expensive mistake in chip design is a functional bug found after tape-out. Functional verification answers a simple question: does this design behave correctly in every possible case? Simulation covers a finite set of scenarios, formal verification can prove certain properties mathematically, and coverage analysis tells you what has not been exercised.
Questa brings all three into one platform, supporting SystemVerilog, UVM and other mainstream methodologies. For teams working in UVM, its debug and coverage closure capability is what determines day-to-day productivity.
Key capabilities
High-performance simulation
Fast simulation engine for SystemVerilog and UVM.
Formal verification
Mathematically proves key properties, reaching corners simulation misses.
Coverage analysis
Code, functional and assertion coverage with closure analysis.
Debug environment
Waveform, transaction-level debug and assertion diagnostics.
Verification management
Regression management and result tracking.
Third-party integration
Works with mainstream simulators and verification IP.
What it delivers
- Quantified coverage means you know before tape-out whether verification is sufficient
- Formal verification reaches simulation blind spots with provable properties
- Mature debug and regression management raise verification throughput
- UVM support lets team methodology carry forward
- Compatible with the verification IP ecosystem, reusing existing assets