User guide

7-7
VCD and VPD File Utilities
-allabsentsig
Reports all absent signals. If this option is not present, by default,
vcdiff reports only the first 10 absent signals.
-ignorecase
Ignores the case of scope/signal names when looking for absent
signals. In effect, it converts all signal/scope names to uppercase
before comparison.
-matchtypes
Reports mismatches in signal data types between the two dump
files.
Options for Specifying Scope(s) to be Value Change Diffed
By default, vcdiff compares the value changes for all signals that
appear in both dump files. The following options limit value change
comparisons to specific scopes.
-scope [scope]
Changes the top level scope to be value change diffed from the
top of the design to the indicated scope. Note, all child scopes/
signals of the indicated scope will be diffed unless modified by the
-level option (below).
-level N
Limits the depth of scope for which value change diffing occurs.
For example, if -level 1 is the only command line option, then
vcdiff diffs the value changes of only the signals in the top level
scope in the dump file.
-include [file]
Reports value change diffs only for those signals/scopes given in
the specified file. The file contains a set of full path specifications
of signals and/or scopes, one per line.