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AR# 16635

ChipScope Pro Analyzer - How do I view a VCD file generated by ChipScope Pro Analyzer in ModelSim?

Description

Keywords: ModelSim, MTI, VCD, ChipScope, Pro, Analyzer, view, software

ChipScope Pro Analyzer exports VCD (Value Change Dump) files that can be viewed in order to print and debug waveforms for future analysis. How do I view these files in ModelSim?

Solution

ChipScope Pro Analyzer does not have the capability to read in VCD files. There are some free viewers you can use. Here are some examples:

VCD Viewer
nWave: One of the best VCD viewers, with support for large VCD dumps.
Undertow: Undertow waveform viewer.
GTKWave: Freeware VCD viewer.
Dinotrace: Freeware VCD viewer from veritools.
WaveViewer: SynaptiCAD's freeware VCD viewer also supports analog signal display and SPICE import. A proprietary compressed waveform format allows it to compress VCD files by 200x, making it a very fast viewer.

Also, ModelSim contains an application called "vcd2wlf," which converts a VCD file into the .wlf format.

The following command will allow you to use this application:
vcd2wlf <vcd_filename> <wlf filename>

The .wlf file may be viewed in ModelSim as a data set. The data sets can then be compared and printed in the Wave window.

AR# 16635
Date Created 09/03/2007
Last Updated 08/18/2009
Status Active
Type General Article