PRTODAY / NewswireToday Free press release distribution service network

More news: Engineering
Written by / Agency / Source: Mentor Graphics Corporation

Check Ads Availability|e-mail Article

Are you the owner of this article?, Turn it PREMIUM with your LOGO instead - and make it 3rd party Ads-Free! within the next hour!

Mentor Graphics Announces the Questa X-Value Verification Solution - Mentor Graphics Corp. announced availability of a new solution for X-value verification in register transfer level (RTL) and gate level designs -
Mentor Graphics Announces the Questa X-Value Verification Solution


NewswireToday - /newswire/ - Wilsonville, OR, United States, 2014/04/01 - Mentor Graphics Corp. announced availability of a new solution for X-value verification in register transfer level (RTL) and gate level designs - NASDAQ: MENT

Your Banner Ad Here instead - Showing along with ALL Articles covering Engineering Announcements

Replace these Affiliate Programs at ANYTIME! Your banner here within the next hour. Learn How!


X-values are symbols that represent unknown voltage levels of signals in digital IC designs. The latest version of the Questa® Verification Platform links simulation and formal verification capabilities to deliver complete X-value analysis and debug, which helps an IC design team avoid the risk of silicon and simulation failure. These new capabilities target both of the problematic effects of X-values that can lead to silicon bugs and wasted design effort: X-optimism and X-pessimism.

“Even though awareness of X issues is good, and designers do their best to follow coding guidelines to avoid X-state bugs, we still face the challenge of eliminating all X-related silicon bugs with traditional verification methods,” said Meng-Han Hsieh, director of Design Platform Division, MediaTek Inc. “The Questa X-value verification solution has proven to be of immense value in catching X bugs which would have been difficult to detect otherwise.”

“Within the Questa Platform we combine formal and simulation to obtain results that couldn’t be achieved with either of these technologies used independently,” said John Lenyo, vice president and general manager, Design Verification Technology Division, Mentor Graphics. “The X-value verification solution brings these complementary technologies together to help our customers overcome the risks of silicon and simulation failures caused by X-states.”

Simulation to Silicon Mismatches
Fundamental differences exist in the way that an X-value is interpreted in RTL simulation versus how it is treated by synthesis. The synthesis interpretation of X, as don’t care, can result in a silicon circuit that behaves differently than it does in RTL simulation, where X is interpreted as unknown. Simply eliminating all X-values from RTL simulation is not practical, as not all storage elements in today’s large designs can be reset directly, especially those in the data path.

X-Optimism and X-Pessimism Verification with Questa
X-optimism is the more dangerous of the two risks associated with X-values. This effect causes unknown values to act as though they were deterministically known values in RTL simulation. This can mask bugs, since the design is not being simulated with all the signal values that it will experience in silicon.

The Questa Verification Platform now includes a mode with silicon-accurate semantics for X-propagation in both the simulation and formal verification engines. This X-propagation mode defeats the threat of X-optimism by allowing X-values to propagate to assertions or testbench checkers, where they can be detected. The Questa fully automatic formal solution can detect storage elements that have been initialized correctly, but could later be corrupted by X-values in their fan-in logic. In addition, X-value debug is expedited with X-trapping that pinpoints the source of X-optimism in the design, and with X-tracing capabilities which aid in tracking down the source of unexpected X-values.

The second X-value concern is X-pessimism, which is most troublesome during gate-level simulation. This issue causes signal values to appear as unknown, even though they will be deterministically known in silicon. X-pessimism leads to wasted debug effort and overdesign.

The Questa solution eliminates these pessimistic X-values by identifying X-state signals that can be formally proven to always resolve to known good logic values. These logic values are then used to initialize the design in simulation, preventing costly simulation failures.

Product Availability and Additional Information
The new Questa product is available for immediate shipment.

About the Questa Verification Platform
The Questa Verification Platform uniquely provides a comprehensive solution that addresses the SoC verification explosion with a platform comprised of advanced verification methodologies, high performance simulation, intelligent testbench automation, software/hardware unified debug, formal, CDC, low power, analog-mixed signal, VIP, a central unified database and automated analysis tools, as well as integrated flows with ESL and emulation.

Mentor Graphics and Questa are registered trademarks of Mentor Graphics Corporation. All other company or product names are the registered trademarks or trademarks of their respective owners.

About Mentor Graphics
Mentor Graphics Corporation ( is a world leader in electronic hardware and software design solutions, providing products, consulting services and award-winning support for the worlds most successful electronic, semiconductor and systems companies. Established in 1981, the company reported revenues in the last fiscal year in excess of $1.15 billion. Corporate headquarters are located at 8005 S.W. Boeckman Road, Wilsonville, Oregon 97070-7777.

Your Banner Ad Here instead - Showing along with ALL Articles covering Engineering Announcements

Replace these Affiliate Programs at ANYTIME! Your banner here within the next hour. Learn How!


Written by / Agency / Source: Mentor Graphics Corporation


Availability: All Regions (Including Int'l)


Traffic Booster: [/] Quick Newswire Today Visibility Checker


Distribution / Indexing: [+] / [Company listed above is a registered member of our network. Content made possible by PRZOOM / PRTODAY indexing services]

# # #
  Your Banner Ad showing on ALL
Engineering articles,
CATCH Visitors via Your Competitors Announcements!

Mentor Graphics Announces the Questa X-Value Verification Solution

Company website links NOT available to basic submissions
It is OK to republish and/or LINK any newswire for any legitimate media purpose as long as you name Newswire Today and LINK as the source.
  Is this your article?
Activate ALL web links and social stream by Upgrading to Press Release PREMIUM Plan Now!

Questa Verification | Mentor Graphics Corp.
Publisher Contact: Carole Dunn - 
503-685-4716 carole_dunn[.]
Newswire Today - PRZOOM / PRTODAY disclaims any content contained in this article. If you need/wish to contact the company who published the current release, you will need to contact them - NOT us. Issuers of articles are solely responsible for the accuracy of their content. Our complete disclaimer appears here.
IMPORTANT INFORMATION: Issuance, publication or distribution of this press release in certain jurisdictions could be subject to restrictions. The recipient of this press release is responsible for using this press release and the information herein in accordance with the applicable rules and regulations in the particular jurisdiction. This press release does not constitute an offer or an offering to acquire or subscribe for any Mentor Graphics Corporation securities in any jurisdiction including any other companies listed or named in this release.

Engineering via RSSAdd NewswireToday - PRZOOM Headline News to FeedBurner
Find who RetweetFollow @NewswireTODAY

Are you the owner of this article?, Turn it PREMIUM with your LOGO instead - and make it 3rd party Ads-Free! within the next hour!

Read Latest Articles From Mentor Graphics Corporation / Company Profile

Read Engineering Most Recent Related Newswires:

Mentor Graphics Integrates its Questa Verification Solution with Jenkins Ecosystem Enabling Maximum Regression Speed
Mentor Graphics Announces Availability of Qualified Calibre PERC Rule Decks for UMC 28nm Technology
ABB Launches Flexible 'Plug and Play' Microgrid Solution to Boost Use of Renewables
Mentor Graphics, Northwest Logic, and Krivi Semiconductor Announce Availability of Complete DDR4 SDRAM IP Design and Verification Solution
ABB and Microsoft Partner to Drive Digital Industrial Transformation
ABB and Fluor Partner to Deliver Power Substation Projects Globally
Mentor Graphics Extends Offering to Support TSMC 7nm and 16FFC FinFET Process Technologies
ABB to Divest Cable Business to NKT Cables
ABB Unveils Innovative Traction Transformer Reducing Energy Losses by up to 50 Percent
ABB Revolutionizes Battery Charger for All Trains
ABB Wins $35 Million Substation Upgrade Order to Strengthen Southern German Grid
ABB Introduces the World’s Most Efficient Electric Propulsion System for Marine Vessels
ABB Elected to the Industrial Internet Consortium’s Steering Committee
Custom Fluid Power and Outsource Institute of Technology Partnership
ABB Presents Digital Grid Approach At Leading Power Sector Event in Paris

Boost Your Social Network
& Crowdfunding Campaigns

NewswireToday Celebrates 10 Years in Business


Visit  MagLar, Inc.

Visit  NAKIVO, Inc.

  ©2016 Newswire Today — Limelon Advertising, Co.
Home | About | Advertise/Pricing | Contact | Investors | Privacy/TOS | Sitemap | FRANCAIS
newswire, PR free press releases distribution service magazines engine news alert newsroom press room breaking news public relations articles company news alerts newswiredistribution ezine bizentrepreneur biznewstoday digital business report market search pr firms agencies reports distri-bution today investor relation successful internet entrepreneurs newswire distribution freenewswiredistribution asianewstoday bizwiretoday USA pr UK today - NOT affiliated with PRNewswire as we declined their partnership offer in 2013
PRTODAY & NewswireTODAY are NOT affiliated with USA TODAY (