- •Contents
- •Introducing Comparescan
- •Features
- •Applications
- •Organization of this Guide
- •Getting Started
- •Starting Comparescan
- •Specifying Input Files
- •Specifying Simulation Results Databases for Comparison
- •Specifying a Comparescan Rules File
- •Specifying a Comparescan Error Database for Viewing
- •Using Automatically Generated Files
- •Using the State File
- •Using the Preferences File
- •Using X Resources
- •Understanding Comparescan Exit Status Codes
- •Comparescan Tutorial
- •Accessing the Tutorial Source Files
- •Simulation Results Databases
- •Comparescan Rules Files
- •Generating a Comparescan Error Database
- •Viewing a Comparescan Error Database
- •Viewing Errors in Hierarchical Order
- •Viewing Errors in Signalscan Waves
- •Viewing Multiple Objects in Signalscan Waves
- •Viewing Errors in Time Order
- •Exiting Comparescan
- •Giving More Information in the Rules File
- •Reviewing the demo.rules Rules File
- •Using the demo.rules Rules File
- •Viewing Clocked Miscompares in Signalscan Waves
- •Comparescan Graphical User Interface
- •Comparescan Window
- •Menu Bar
- •File Menu
- •Tools Menu
- •View Menu
- •Window Menu
- •Button Bar
- •Application Examples
- •Making Absolute Comparisons
- •Specifying the Filename of an Object
- •Comparing Two Objects from the Same File
- •Comparing Two Objects on a Condition
- •Making Clocked Comparisons
- •Using One Clock and Two Simulation Files
- •Using One Clock and One Simulation File
- •Using Two Clocks and Two Simulation Files
- •Using Two Clocks and One Simulation File
- •Performing a Clock Compare with Timing Checks
- •Checking Stability
- •Specifying Objects in the Design Hierarchy
- •Command Option Examples
- •Specifying Start and End Times for Golden and Test Files
- •Specifying Start and End Times for Comparison
- •Specifying a Time Shift
- •Specifying compare Command Tolerance Windows
- •Special Syntax Examples
- •Commenting
- •Continuing Long Lines
- •Specifying Both a Golden and a Test File
- •Specifying Filenames Using UNIX Filename Syntax
- •Writing Comparescan Rules
- •Default Comparison Rules
- •Absolute and Clocked Comparisons
- •Rules File Parsing and Execution
- •Command Syntax and Options
- •General Command Syntax
- •Command Summary
- •General Command Options
- •datafile1
- •datafile2
- •compare
- •clkdef
- •clkcompare
- •stability
- •sequencetime
- •nosequencetime
- •statemapping
- •threshold
- •report
- •savedata
- •loaddata
- •translate
- •Frequently Asked Questions
- •Comparescan Input
- •Comparescan Output
- •How do I view a comparison report that I have generated?
- •Can I print a report of my errors?
- •Can I run the tool in batch mode?
- •Graphical User Interface (GUI)
- •How do I run the program without the user interface?
- •Why can’t Comparescan allocate colors?
- •How do I change the colors in the GUI?
- •Why can’t I read the text in the GUI?
- •Comparescan Features
- •How can I compare a digital simulation with an analog simulation?
- •How do I match an X value?
- •How do I compare only the top-level signals in my design?
- •How do I compare modules at different levels in the hierarchy?
- •What if I want a different tolerance window for every signal?
- •Comparescan Error Messages
- •What does “Out of Memory” mean?
- •What does “fork failed” mean?
- •Index
Comparescan User Guide
Comparescan Tutorial
Viewing Errors in Time Order
You can view errors in the Comparescan window in time order instead of in hierarchical order.
When you view errors in time order, you can determine which error occurred first (and possibly caused the other errors) in a comparison, and you can identify compare errors that are clustered in time.
To view your compare errors in time order, click TimeView or select View—View by Time from the Comparescan menu.
The Comparescan window lists all of the signal compare mismatch errors by simulation time, as shown in Figure 3-9 on page 30. The simulation time is listed to the left of each signal compare mismatch error.
To view the same error database in both hierarchical order and time order simultaneously, choose Window—New Window. Set one of the windows to hierarchical view and one to time view.
December 2000 |
29 |
Product Version 1.9 |
Comparescan User Guide
Comparescan Tutorial
Figure 3-9 Comparescan Window in Time View
December 2000 |
30 |
Product Version 1.9 |