Wednesday, December 03, 2008     Register | Login | Search | Contact Us
     
   
     
     

Many of you already received communications about the move of the Cadence user community into cadence.com. And many of you have already joined, with over 4000 registrations in the first two weeks.

The new Cadence Community enhances the ability of Cadence users to connect and collaborate. In addition to moving the community into cadence.com -- enabling single sign-on for community, Sourcelink and Cadence events -- the new site is organized around nine technology segments, giving you easy access to product information, training, forums and blogs. Some of the new features include:
  • Ability to respond to posts via e-mail
  • Technology-specific blogs
  • Latest Web 2.0 social networking capabilities
  • Public profile options
  • Private messaging
  • Friends lists
Visit the new Cadence Community today at www.cadence.com/community and join the discussions!

Registration note: Due to the scope of the enhancements and the new SSO registration system, we were not able to migrate existing cdnusers.org member accounts. So new registrations are required, but this enables a broader set of functionality we think you'll enjoy.

Forum note: Under the guidance of forum moderators, we have taken the 20+ cdnusers.org forums and consolidated them into 11 forums on the new site. Posts have been brought over so you can leverage that posting history. CDNusers forums will be set to read only starting 7/30, and cdnusers.org will be redirected to the new community on 8/4.

Best regards,
Mike and Tom

Michael A. Catrambone - Steering Committee Chairman
Distinguished Engineer
PCB/Mechanical
UTStarcom, Inc.

Tom Diederich
Cadence Community Manager
Home
Forums
Forums > Functional Verification > e

Subject: how can i detect X value
Posting to forums is available to community members only.
Login or Register
Rate this topic:
   
Author Messages
zcabeli11
Posts: 27
Online: User is Offline
3/05/2008 3:06 AM  
Hello, i'm using ticks to read data from verilog wire. however, when the wire contains invalid value (x) it gives me defauls zero. how can detect this invalid value ? thanks,
stephenh
Posts: 77
Online: User is Offline
3/05/2008 3:46 AM  
Use ports instead - they're faster, safer and have built-in methods for doing X checks etc.
Steve H.
zcabeli11
Posts: 27
Online: User is Offline
3/05/2008 7:03 AM  

i used simple port to bind a name with it's verilog corresponding element. and then called the method has_unknown( )

thanks,
jhzhang
Moderator
Posts: 7
Online: User is Offline
3/05/2008 7:06 AM  
You can also use the MVL API with simple ports to both sample and drive X/Z values safely.
arjuny
Posts: 7
Online: User is Offline
3/05/2008 10:00 AM  
The following example gives the x detection on simple port

a : simple_port of bit is instance;

if(a.get_mvl() == MVL_X) {
out("unknown value was detected on verilog wire");
};
Posting to forums is available to community members only.
Login or Register
Forums > Functional Verification > e > how can i detect X value


ActiveForums 3.6
     
Copyright 2006 Cadence Design Systems, Inc.