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Posts posted by thomas.haber

  1. Hello Thomas,


    Let me introduce myself first. I am working on creating validation tools for RTL design. Now I am using your pattern log viewer to create log viewer for a trace file called tarmac trace. I found it is super convenient and easy to use.


    And now I am learning to extend Impulse to write my own format viewer. I will keep watching this topic as well as your website to catch up with any update!




    You're welcome.


    Best Regards,


  2. Hi Torsten,

    all the issues in the first mail are correct (beside dat :-) ). Most of them are known but still on a list somewhere.

    Will keep you updated on them.


    For the second mail, i might make you happy.

    With the next release there will be productions available. One is based on javascript.

    The script is designed in a way so that you can create any kind of signal with it.

    A simple one looks like:


    for (var iter  =  new SamplesIterator(input);iter.hasNext();){
         var current = iter.next();


    Will overlay a signal with a sin curve.

    Would be great to have a first user !

    Guess it will be released next week. Docu will follow.




  3. Hi Sumit,


    just some tought on this.

    I had similar ideas when i was covered with the spin simulator.

    If you want to keep a "systemC sync" on all processes you probably have to give more effort than you can take from it.

    A solution could be to allow async for a given amout (like tlm). 


    In spin you have the possibility to do parallel calculation for a given "simulator time".

    In these proclets you calculate but can not change any signals, and change signals when your are out and back in sync. 

    The same you can do in systemC. Doing parallell calculations in a seperate "real" thread, but keep systemC running in its own process means.




  4. Hi Sumit and Torsten,


    0.5.16 is out. It has a new View "Signal Table" that allows to 

    * sort 

    * filter

    * view data (columns)


    The input of the table can be bound to

    * the current editor

    * selection of a view (explorer)

    * fixed


    The displayed contents can be 

    * the slected element

    * its children

    * all children below (tribe)


    Also new are first means to modify (edit) signal files by modifying its hierarchy (copy/paste).




  5. >>1. Select-All feature : Select all works everywhere apart from where it is mostly needed, the signal selection pane (left bottom pane which shows signals in a particular hierarchy).

    Yes you are right.


    >> 2.  Impulse first drawing : The feature works, thanks for that. But now it includes some values which are not visible. I would be happy if every smallest possible changes are visible.

    Do you have an example - example file.


    >> With the statistics work started, you have taken a big load on yourself. Good luck with it and please let me know if you need help on the way.

    I focus on means. Not on implementing all possible statistical operations. So ther will be an outcome quite soon.

    It shall be possible that user can implement their own functions.

    But i need to know what can be possible requirements.

    And i will implement  a couple of maybe 10 general purpose function (your input is welcome).





  6. I read the full text in the isue and i think i understand it better now.


    The problem is that anybody want it in his special mode :-) . 
    My personal view and my approach is that i want you and anybody to enable as much as possible,
    but i can not implement everthing.
    Solution is to enable different forms of extensions.
    This is what i started some time ago.
    This has also to do with another isses about statistical informations.
    There will be an extention to calc you own statistics.
    I was also thinking to combine with eclipse report engine and its charts !
  7. >>Hope I am keeping you busy by flooding "New feature request". I am happy that I am able to keep you busy.


    >>Can you make impulse reading a XML file OR some "Other file" which contain connection and hierarchy information about SoC fabric ? Have some more idea to employ impulse for some other job also.



    I don't understand this. Could you please explain.


    Best Regards,


  8. Fully agree, here my thoughts:


    Best thing would be to reuse something existing.

    But i don't think that there is an open solution that covers all digital,analog tlm ( and maybe  logging).


    First thing to decide is the approach:

    * stream approach (like vcd -- can be also compressed) - easier to implement - faster logging

    * db approach - can be quite complicated - faster reading




  9. Usually simulator put a struture of scopes into the vcd file.

    So in the viewer its much easier to get through the signals.

    But SystemC does not by default.

    Instead they have dots in the name.


    $scope module SystemC $end

    $var wire   32  aaa  top.irx_hsdpa_top.HSI_CLC_REG [31:0]  $end



    Is it possible to change systemCs mind ?





  10. #0000021: 

    Now i understand. But its a problem to solve. Usually simulator put the struture into the vcd and then you see a tree of elements.

    But SystemC does not by default it seems.


    $scope module SystemC $end

    $var wire   32  aaa  top.irx_hsdpa_top.HSI_CLC_REG [31:0]  $end

    Don't know why. Maybe its possible. I will open a thread about it !

    If there is a structure you see it. And then you can copy whole structures into the view.


    Now i also understand your request about a new view.

    Usually you have a structure and in the signal view you can collapse and open parts of it.

    Additionally you can define multiple configurations and switch thwem on the same file.



    You know that you can slect multiple signals and press enter to open the dialog for all of them ?

    That not more than 3 clicks and presses for N Signals.



    Ok you want to change it (see 20). I thought you want a clear indicator what is currently displayed. Would it make sense ?

  11. Hi Summit,


    I put some comments into your request:

    #0000023: Combining single bit signals into multi-bit signal
    #Would be great if we can combine many single bit signal into multibit signal
    Yes i'm thinking about a group feature.
    But usually bit signals in vcd that belong to a group ([3]) are allready combined by default!
    #0000022: Splitting Multibit Signals into constituent bits
    #Would be great if there is any mechanism to split every N-bit signals to N individual bits
    This is allready possible but not auomatically for a whole bus.
    You can copy the config and do a selection of the bits you want to see (logic data tab).
    An ungroup feature would make it automatically.
    #0000021: Hierarchy solver for VCD
    #VCD signals are shown as U_ab.U_hb.U......, can you please add a mechanism which will automaticall resolve this into hierarchy.
    This i don't understand.
    The VCD signal allready contains a hierarchy structure.
    This is used in impulse.
    #0000020: Conversion of any data-type to analog data-type
    #Feature of conversion any signal to analog signal (interpolated or step) upon right click. Very important for signal processing systems.
    This is possible (see logic data tab)
    #0000019: Style and signedness on Right click over signal
    #Would be great if data style and signedness can be available within right click over the signal. 
    Does it mean you want an indicator which format is shown ? eg 0001H ,  0001O , 0001B (for hex,octal,binary).
    Signed and unsigned should not be misleading ?!?
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