User guide

7-15
VCD and VPD File Utilities
-spikes
Indicates all zero-time transitions with the >> symbol in the
left-most column. In addition, prints a summary of the total number
of spikes seen at the end of the vcat output. The following is an
example of the new output:
--- DF_test.logic.I_348.N_1 ---
0 x
100 0
120 1
>>120 0
4000 1
12000 0
20000 1
Spikes detected: 5
-noalpha
By default vcat displays signals within a module instance in
alphabetical order. This option disables this ordering.
-wrapsize size
Specifies value displays for wide vector signals, how many bits to
display on a line before wrapping to the next line.
-showmasters
Specifies showing collapsed net masters
-showdefs
Specifies displaying signals but not their value changes or the
simulation time of these value changes.
-showcodes
Specifies displaying the signal’s VCD file identifier code.
-stdin
Enables you to use standard input, such as piping the VCD file
into vcat, instead of specifying the filename.