[Fedora-electronic-lab] thank you for this platform

Chitlesh GOORAH chitlesh at fedoraproject.org
Tue Dec 15 22:59:09 UTC 2009

On Tue, Dec 15, 2009 at 6:44 PM, Nigel noldsworth <> wrote:
> Hello,
> Thank you for this robust platform for digital design. I'm a digital
> designer. I was using iverilog and gtkwave on ubuntu. However last
> year, I had a lot of issues when doing maths with verilog. Then I
> tried Fedora to see if if suffers these issues, but haven't
> encountered any. I was impressed and sticked with Fedora ever since.
> With the recent gplcver and vrq, it makes verilog design exciting.

Hello Nigel,

Thank you for your feedback. We appreciate it.

There was recently a thread in the iverilog mailing list about this
maths issue with Ubuntu's iverilog. This issue is still present on
Ubuntu with the next iverilog release. The test we have conducted
against iverilog on Fedora does not reflect this maths issue.

> In the meantime, I'm learning vhdl on my own and am unable to get the
> name of the current state of the state machine on gtkwave. Is there a
> solution for that so that I don't have to declare a special
> non-synthesized std_logic_vector.

As Shakthi pointed out, extract the waveforms with --wave=design.ghw
instead of VCD.


Chitlesh GOORAH
Fedora Electronic Lab

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