Verilator

Today

01:23 pm Installation: RE: Verilator instalation

For the record I've run into the same problem last week, bringing Verilator up on a new Fedora 18 64-bit machine with... Jeremy Bennett

05/17/2013

11:42 pm Usage: RE: using split VCD trace

Hello,
my friend Gregory has used part of my work in his Atari Jaguar SOC.
This is here :
https://github.com/Tor... Frederic Requin

05/15/2013

12:47 pm Development: RE: SystemVerilog interfaces

Can you share with us some info on what features of SystemVerilog interfaces that will be supported?
Kenny
Kenny Ranerup

05/13/2013

09:58 am Installation: RE: Verilator instalation

Thanks,
Problem solved,the problem (i think) is related with the linking with this version of g++ 4.7.2. I forced ... João Fernandes

05/12/2013

08:17 pm Installation: RE: Verilator instalation

Maybe the shared object is inconsistent with the headers or something, I'm not sure but I always use static linking f... Wilson Snyder

07:06 pm Installation: RE: Verilator instalation

Yes the systemc test all pass on all the installs i made.
Now i installed the Ubuntu 13.04 x86_64 on a vm,and the te... João Fernandes

12:32 pm Installation: RE: Verilator instalation

From the backtraces I don't believe this is verilator related. Do the systemc tests pass without verilator?
Most ... Wilson Snyder

09:10 am Installation: RE: Verilator instalation

Thanks for your reply,
I recompiled systemc and the test_sc per your instructions to take the backtrace, and the v... João Fernandes

05/11/2013

08:26 pm Development: RE: False circular logic and other issues when parsing 3rd party code

Please see bug63 and the UNOPTFLAT section of the manual for more details, there are some reporting options that were... Wilson Snyder

06:54 pm Development: False circular logic and other issues when parsing 3rd party code

First of all many thanks for quickly fixing bug642 and bug643. I will shortly verify those fixes with my project.
Du... Krzysztof Jankowski

05/10/2013

02:24 am Installation: RE: Verilator instalation

Seems suspicious given that version of Verilator and SystemC seems to work for everyone else. It's certainly possibl... Wilson Snyder

05/09/2013

07:01 pm Installation: Verilator instalation

Hi everyone.
First let me thank the developers for this amazing tool.
Right now i think i am having some troubles... João Fernandes

05/08/2013

10:56 am Development: RE: support for unsized SV integer constants

This is bug256, which is unfortunately harder to fix than it might appear. I would suggest defining DELAY as nothing.
Wilson Snyder

10:52 am Usage: RE: how to prevent verilator from analyzing meta-comments?

Right, the pipe filter is a great example application for things like this.
There's an example of filtering in tes... Wilson Snyder

04:42 am Development: support for unsized SV integer constants

Below SV code doesn't seem to compile with "verilator -sc unsized.sv" command:... Krzysztof Jankowski

03:08 am Usage: how to prevent verilator from analyzing meta-comments?

I'm new to verilator and just started playing with it. I have some big 3rd party SV code, which I really don't want t... Krzysztof Jankowski

05/05/2013

02:06 pm Usage: RE: how to drive data in a single clock domain

Thanks for the pointer. You need this:
reg Trd /*verilator public_flat_rw @(negedge clk)*/;
reg Twr /*veri... Wilson Snyder

04:20 am Usage: RE: how to drive data in a single clock domain

I think that on time 62 (jpg is also included), the value of DUT ferri (pipe_fifo.v:49) should be 0. I call eval ever... Pinhas Krengel

05/04/2013

09:01 pm Usage: RE: how to drive data in a single clock domain

Verilator is cycle based so doesn't propagate events from signals set in DPI tasks (trd/twr), instead it waits for th... Wilson Snyder

08:09 pm Usage: RE: how to drive data in a single clock domain

Please see a simple example.
Correct behavior is the ferr is not asserted after a single cycle write set.
When I sa... Pinhas Krengel

07:58 pm Usage: RE: how to drive data in a single clock domain

Registered outputs should of course only change when the clocks change. I'm probably confused, can you draw a diagra... Wilson Snyder

07:51 pm Usage: RE: how to drive data in a single clock domain

I call eval every time change in the first place. It seems that eval is doing somthing only on a positive
edge.
If... Pinhas Krengel

07:36 pm Usage: RE: how to drive data in a single clock domain

I'm not sure I understand exactly, but I think you're saying the data is racing. The "C" interface doesn't have a pr... Wilson Snyder

07:28 pm Usage: how to drive data in a single clock domain

Hi
I am new to verilator. I have problems in driving data to a simple single clock DUT.
If clock edge and data st... Pinhas Krengel

03:21 pm Usage: RE: verilator DPI‏

Hello
Thank you very much for your help. The debian package was not working okay. I removed it and installed and bui... Pinhas Krengel

02:53 pm Usage: RE: verilator DPI‏

BTW you may want to skip the "make install". Instead "setenv VERILATOR_ROOT `pwd`" then run $VERILATOR_ROOT/bin/veri... Wilson Snyder

02:51 pm Usage: RE: verilator DPI‏

I understand, but debian lags the mainline and doesn't have many bug fixes. Follow the [[Installing]] instructions, ... Wilson Snyder

02:41 pm Usage: RE: verilator DPI‏

I did not build it myself. I used apt-get install verilator.
I assume I have to build it myself.
My build does not ... Pinhas Krengel

02:36 pm Usage: RE: verilator DPI‏

BTW check the version you are using; I'm not sure how close it is to the head; maybe the release from here will work ... Wilson Snyder

02:34 pm Usage: RE: verilator DPI‏

Works fine for me. I get "task drive 0 0 at 2" etc then it ends.
Sorry must be something related to your site, yo... Wilson Snyder

02:19 pm Usage: RE: verilator DPI‏

All files are attached:
cmp.unx //compile and run
sim_main.cpp
pipe_fifo_tool.sv
pipe_fifo.v
./cmp.unx
./obj_... Pinhas Krengel

02:04 pm Usage: RE: verilator DPI‏

Not sure why it isn't working; but you will need to (later) findScope("TOP.v") to get to it, or pass a different name... Wilson Snyder

01:50 pm Usage: RE: verilator DPI‏

Some more info about DPI crash from gdb:
(gdb) info function t_gen_stim
All functions matching regular expression... Pinhas Krengel

01:21 pm Usage: RE: verilator DPI‏

Hi
I did create :
pipe_fifo_tool = new Vpipe_fifo_tool;
I added the dump statement:
pipe_fifo_tool = new Vpip... Pinhas Krengel

11:25 am Usage: RE: verilator DPI‏

Should work, though the scope probably needs to be u_dut.v. But that's not the problem as the error would be differe... Wilson Snyder

10:48 am Usage: verilator DPI‏

I have downloaded and installed on my debian machine verilator (using apt-get install).
It works fine with simple ex... Pinhas Krengel

04/30/2013

09:17 am Installation: RE: Verilator binaries for windows

Verilator itself is not compiled with Visual Studio. Visual Studio is only used to run Verilator and compile Verilato... Amir Gonnen

08:20 am Installation: RE: Verilator binaries for windows

Hi, I managed to compile the verilator.exe with the XMLs, sln, proj and projfilters provided. But how can I compile t... Lau Janine

04/29/2013

02:56 am Usage: RE: public access to the module #parameter block from C++

Yes it does. Thank you.
I think my mistake was putting /*verilator public*/ on the same line but after the comma.
... Bulent Abali

04/28/2013

10:58 pm Usage: RE: public access to the module #parameter block from C++

This should make "TWO" visible in the class header.
module b #(
parameter TWO /*verilator public*/ =... Wilson Snyder

04/25/2013

05:11 pm Development: RE: SystemVerilog interfaces

Great! Thanks Wilson Ed Lander

04/24/2013

02:20 pm Usage: RE: sc_uint instead of native uint?

I'll probably do that, indeed. I'm not very keen on my current solution of adding another level to wrap it in sc_uint... Alex Hornung

12:18 pm Usage: RE: sc_uint instead of native uint?

sc_uint didn't originally exist in SystemC, and verilator anyhow needs native uints for non-SystemC generation.
... Wilson Snyder

12:12 pm Development: RE: SystemVerilog interfaces

Interfaces should be in by the next release or one after - by end of June. Wilson Snyder

04/23/2013

05:02 am Usage: sc_uint instead of native uint?

Hi - I was wondering why the two verilator options for systemc ports are sc_bv and native uints, instead of sc_bv and... Alex Hornung

04/22/2013

12:17 pm Usage: RE: public access to the module #parameter block from C++

that makes sense. thank you. Bulent Abali

07:58 am Usage: RE: public access to the module #parameter block from C++

Hi B Abali,
The parameter is a constant - it will have been optimized out by the compiler. Indeed optimizing out p... Jeremy Bennett