iVerilog / VVP output to GTKwave.

Oct 11, 2005 3 Replies
G

nextPart1422611.stSyJimiRn Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8Bit



Hi All.



I have a test routine that successfully compiles in iVerilog. I process my verilog source as follows:



/usr/local/bin/iverilog -Wall -g2 -tvvp -o./test.sim ./test; /usr/local/bin/vvp ./test.sim -lxt2



Now I have the lxt2 formated output in the file ./test.sim



My question is:



How go I get GTKwave to accept and display this output? Every time I click GTKwave->File->Open the program just aborts and exits. I have tried without success cut & pasting too.



Can anyone kindly offer some assistance please?



Any assistance greatly appreciated.


Vote
Twitter Facebook LinkedIn
A

There are different versions of GTKwave available. I recommend trying

1.3.72 from here:
formatting link

Regards, Allan

Vote
Twitter Facebook LinkedIn
G

Grahame Kelly schrieb: ...

The ./test.sim is not the lxt2 file. It is the compiled verilog code the simulator uses.

You need to specify the lxt2 file inside of your verilog code and what variables should be put in it.

Look for the system function $dumpfile and $dumpvars from the verilog languange.

Something like this would dump all your variables to the file test.lxt:

initial begin

$dumpfile("test.lxt"); $dumpvars;

end

Then you can open it with:

gtkwave test.lxt

You might also consider starting it from command line. Then you see any error message it produced.

Hope that helps.

Guenter

Vote
Twitter Facebook LinkedIn
G

snipped-for-privacy@hotmail.com wrote: -------------

Much thanks to you, Guenter and Allan. I did as you both advised, and GTKwave is now running wonderfully with the iverilog, vvp output as expected. I especially appreciate you both giving me examples to follow.

------------- Again much thanks guys. Cheers Grahame

Vote
Twitter Facebook LinkedIn

Join the Discussion

Have something to add? Share your thoughts — no account required.

Didn't find your answer?

Ask the community — no account required