nCompare - Verdi

Introduction

The nCompare utility in Verdi provides a comprehensive way of comparing two waveform database.

The utility has many options to craft the comparison.

Feature list:

1. Compares signals and arranges (sorted) it by hierarchy and time sequence.

2. Runs in batch mode

3. User can provide trigger setting

4. Has renaming rule to map the signal names

etc.

set referenceFSDB <PATH_TO_FSDB>

set testFSDB <PATH_TO_FSDB>

cmpOpenFsdb $referenceFSDB $testFSDB

# Adding compare options.

# Enable glitch,x and z compare

# -tolerance 100 --> Have a tolerance of 100 time units, i.e. a shift in secondary signal within 100 time-unit is OK

# -valuetolerance 0 --> Signal value margin

cmpSetCmpOption -glitch T -x T -z T -tolerance 100 -valuetolerance 0

# Add the hierarchy and comparison parameters

# Level indicates how deep to perform comparison with 0 being all levels under given hierarchy

# Type indicates the signals to be compared. (IN, OUT, INOUT, BOUDNARY i.e. IN + OUT + INOUT, NET, REG etc)

cmpSetSignalPair <design_hierarchy_to_compare> -level n -type BOUNDARY

cmpCompare

The nCompare utility has a list of commands to tweak the compare.

For more information on the Tool Utility check "Verdi and Siloti Command Reference" manual Appendix D: nCompare File and Comparison Formats