Viewing Dump File(.vcd file)

[pgh]

Hi:
I would like to know what the contents of a dumpfile would be like. How
can I view the contents of a dump file in general. The simulator I am
using is Modelsim.How do I view the dumpfile in Modelsim.

Thanks in advance.
Sari.

 

[Allan Herriman]

On Wed, 27 Oct 2004 03:22:04 -0400, "pgh" <sari_234@yahoo.com> wrote:

Hi:
I would like to know what the contents of a dumpfile would be like. How
can I view the contents of a dump file in general. The simulator I am
using is Modelsim.How do I view the dumpfile in Modelsim.

A1: You should have a file called vcd2wlf.exe somewhere in the
Modelsim directory. It will convert your vcd to a wlf file, which can
be displayed by Modelsim.

A2: There are free vcd viewers such as gtkwave which will display the
vcd file directly.

A3: Why do you want to display a vcd file in Modelsim? If you want
to look at what's going on inside your design, you should just drag
that piece of the hierarchy into Modelsim's wave window. Using VCD
will slow your simulation and make it harder to view signals.

Regards,
Allan

 

[pgh]

Hi Allan:

Thankyou for ur reply.Ur answers helped me out with my question.
Iam new to Verilog and Iam learning stuff.And I came across dumpfile
concept so I was curious to see what the dump file would consist of.So I
ran a small program to create a dump file but could not open it.The reason
y I mentioned that I had Modelsim is cause that is the simulator Iam
using.I thgt that would matter to view the .vcd file.

Thankyou for ur answers.