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  3. the defalut line type in wavescan

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the defalut line type in wavescan

minci
minci over 15 years ago

 hi,there

i am using ic5141 usr6 and mmsim72 with IBM 0.13 PDK and SMIC cmos090 PDK

when i use cmos090 PDK with default configuration,the resulting line of simulation in the wavescan is solid and is very clear.

But when i use IBM PDK with default configuration,the resulting line of simulation is dotted and i have to change it to solid everytime after the result be plotted.How can i set the default line type in the wavescan no matter which PDK i am using?

Best regards

minci

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  • Quek
    Quek over 15 years ago

    Hi minci

    You can refer to the "trace variables" section of wavescan manual by clicking here. Here is the setting for .cdsinit file:

    envSetVal("wavescan.trace" "lineStyle" 'string "solid")

    In general, you can look for any environment variables for the tools (schematic editor, layout editor, spectre, ade, etc) in the .cdsenv files following directory:

    $CDSHOME/tools/dfII/etc/tools

    E.g. $CDSHOME/tools/dfII/etc/tools/wavescan/.cdsenv

    In case the above does not work, we have an internal solution which gives the following suggestion:

    1. Open Display Resources Manager in CIW by selecting Tools ->Display Resources Manager...
    2. Click "Edit..." in Display Resources Tool Box.
    3. Change "Tech Lib Name" to ABC.

    4. Search layers "y0" and modify the display style.
    5. Re-do step 4 to change "y1" "y2" ........ "y9".

    6. Save the display setup.

    Best regards
    Quek

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  • minci
    minci over 15 years ago

     hi,Quek,thanks for help!

    I have written the following line in my .cdsinit file of my work directory:

     envSetVal("wavescan.trace" "lineStyle" 'string "solid")

    and i have found in the  .cdsenv file in my $CDSHOME/tools/dfII/etc/tools/wavescan/ has already set wavescan.trace to solid.

    but it doesn't work.

    then i try the last method and this time it works!

    but i' wonder whether changing the layers "y0,y1,y2...." like this  will change the layout display,or it just changes the line in the wavescan?

     

    Best regards

    minci

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  • Quek
    Quek over 15 years ago
    Hi minci

    Layers y0, y1, etc are also used for displaying the output of marknet cmd. So you will also see solid lines for marknet. Changing these layers does not affect layout display. Layout display is controlled by the display packets as set in the display.drf provided by the foundry.

    Best regards
    Quek
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  • minci
    minci over 15 years ago

     hi,Quek

    i find that when i have changed the y0...etc in the Display Resources Tool Box and go to save. It overrides my display.drf file which was copied from the PDK while making my work directory as the PDK instruction said.Does it matter or not for the display.drf file have been changed?

    Best regards

    minci


     

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  • Quek
    Quek over 15 years ago

    Hi minci

    I don't quite understand your reply so let me make a guess. You have copied the display.drf file from the pdk directory to your working directory and after modifying and saving the y0,y1,etc packets, you found that the display.drf file in your working directory has changed. So you are wondering if it matters? May I know if this is your question?

    It does not matter. display.drf is just for viewing the layout so it can be customized according to your preferences.

    Best regards
    Quek

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  • minci
    minci over 15 years ago

     Hi Quek

     Your guess is right!

    now i can change my display.drf file without worry.

    But still, i am somewhat confusing that why i have to change display.drf to modify the line type in the wavescan?

    Why the envSet cmd in the .cdsinit file didn't work?

     

    Best regards

    minci

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  • Andrew Beckett
    Andrew Beckett over 15 years ago

    When using wavescan with ADE, it plots signals with the same colour and line style as the corresponding probe in the schematic, to make sure it is obvious which signal is which. Since probing and other schematic layers are controlled by layers in the tech file, and their appearance is controlled via the display.drf, that is what sets the appearance of the lines in wavescan within ADE (as well as the probe colours).

    When running wavescan standalone, the .cdsenv settings are used; i.e. it doesn't have the colours overridden by ADE.

    Regards,

    Andrew.

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  • candygg
    candygg over 14 years ago

    Thanks all for the above information! That helps when change line color and line style from "dash" to "solid".

    However, I also want to change default symbol style and symbol count in wavescan.

    I set in .cdsenv as follows:

    wavescan.trace symbolsOn string "true"

    wavescan.trace symbolStyle string "circle"

    wavescan.trace symbolCount string "All points"

    Only the first command works. Can display.drf change symbol style and symbol count? And where? Thanks again!

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