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 Assura error markers not viewable when zoomed out 

Last post Tue, Dec 15 2009 7:27 PM by Quek. 3 replies.
Started by TrevorB 15 Dec 2009 08:37 AM. Topic has 3 replies and 1699 views
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  • Tue, Dec 15 2009 8:37 AM

    • TrevorB
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    • Joined on Mon, Nov 30 2009
    • Huntsville, AL
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    Assura error markers not viewable when zoomed out Reply

    Hi,

    Previously, our layout designers were accustomed to doing a "fit zoom" and viewing the entire chip.  At this perspective, with all layout layers set to no-view, they could see all the Assura DRC error markers. (It's an informal tape-out, sign-off test.)

    However, for some reason, they can no longer see all the errors.  They can only see large clumps of errors, but they have to zoom in to see smaller isolated errors.

    I also was accustomed to the principle that any "highlight" was viewable no matter how far the viewer is zoomed out.  But, this does not seem to hold true for the highlight markers in Assura 3.2 and IC 5.10.41.500.6.137.

    Do you have any suggestions on how to increase the visibility of Assura DRC error markers (highlight shapes)?

    BTW, I have experimented with increasing the stipple density and outline width of the highlight-drawingX layers, but that seemed to make matters worse - not better - for the full chip view.

    Thanks,

    Trevor

    • Post Points: 20
  • Tue, Dec 15 2009 4:35 PM

    • Quek
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    Re: Assura error markers not viewable when zoomed out Reply

    Hi Trevor

    There were some old bugs that indeed caused the markers to disappear. In one case, a possible workaround is to view the results using the standalone viewer "avview". But those bugs have already been fixed since Assura317.

    unix>avview &

    Would you please give the latest version of Assura (ver41USR1_HF1) a try to see if the problem persists?

    Thanks
    Quek

    • Post Points: 20
  • Tue, Dec 15 2009 7:22 PM

    • TrevorB
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    Re: Assura error markers not viewable when zoomed out Reply

    Quek:
    Would you please give the latest version of Assura (ver41USR1_HF1) a try to see if the problem persists
     

    Hi Quek,

    I tried the latest version, and it changed several things - but not the visibility of the error markers.  :(

    The problem is not that the markers are not being loaded into Virtuoso.  The problem is that we cannot see the markers, until we zoom in.  This is relatively new to us.  We are accustomed to being able to see at least one pixel representing every error.  We had to zoom in for more detail - but, at least there was some evidence, even at the chip level.

    Now, we cannot see the errors unless we zoom in and pan around.

    Maybe this is a problem more with IC5 than Assura, since IC controls the graphics editor?

    Thanks!

    Trevor

    • Post Points: 20
  • Tue, Dec 15 2009 7:27 PM

    • Quek
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    Re: Assura error markers not viewable when zoomed out Reply
    Hi Trevor

    Your issue is the same as the previous bug cases. The markers would disappear whenever user zooms in/out of the layout. Would you please try and see if viewing the results using avview shows the same problem?

    unix>avview &


    Thanks
    Quek
    • Post Points: 5
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Started by TrevorB at 15 Dec 2009 08:37 AM. Topic has 3 replies.