User guide

7-11
VCD and VPD File Utilities
-compare01xz (EVCD only)
Converts all signal state information to equivalent 4-state values
(0, 1, x, z) before difference comparison is made (EVCD files only).
Also ignores the strength information.
-xzmatch
Equates x and z values.
-xumatch (9-state VPD file only)
Equates x and u (uninitialized) values.
-xdmatch (9-state VPD file only)
Equates x and d (dontcare) values.
-zdmatch (9-state VPD file only)
Equates z and d (dontcare) values.
-zwmatch (9-state VPD file only)
Equates z and w (weak 1) values. In conjunction with -xzmatch
(above), this option causes x and z value to be equated at all times
EXCEPT time 0.
Options for Specifying Output Format
The following options change how value change differences are
reported.
-allsigdiffs
By default, vcdiff only shows the first difference for a given signal.
This option reports all diffs for a signal until the maximum number
of diffs is reported (see -limitdiffs).
-wrapsize columns
Wraps the output of vectors longer than the given size to the next
line. By default, this value is 64.