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  3. Help on Hilite net

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Help on Hilite net

zeroskills
zeroskills over 15 years ago

We don't have a regular hilite net, we have is similar a "hilite net" tool using vxl probe. I would like to use a regular "hilite net" without using vxl or a "hilite net" that can be use for vxl and regular layout.

  

 

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  • Andrew Beckett
    Andrew Beckett over 15 years ago
    You probably want Connectivity->Mark Net in that case. You may want to hit F3 to bring up the options form, to be able to adjust which vias are used to avoid it connecting through diffusion.

    Mark Net does not require any connectivity in the database.

    Regards,

    Andrew
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  • zeroskills
    zeroskills over 15 years ago

    i'm much more familiar with the hilite net. i tried the mark net, how do you change the layers?

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  • Andrew Beckett
    Andrew Beckett over 15 years ago

    I'm not sure what you mean by "Hilite net", because as far as I know, there's no command called that. There's a "probe" command (either in Verify->Probe, or Connectivity->XL Probe).

    Your question is really very unclear. Please try to be precise when asking questions, because otherwise we have to guess what you're really asking, and that's not very efficient.

    I'm not sure what you mean by "how do you change the layers"? If you use Connectivity->Mark Net and then hit F3, you have the ability to change the layers used for marking the nets - if you turn off "Cycle through System Colors Automatically" you can choose the mark net colour. Also, perhaps you mean which layers in the layout get traversed? This is controlled by the "Via Layers used by Mark Net", which you can change to "Select Via Layers" and then you have a form to control this. It's seeded from the tech file though.

    As I said, I don't really know what you're asking here - so the above is guesswork as to what your question might actually be.

    Regards,

    Andrew.

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  • zeroskills
    zeroskills over 15 years ago

    Hi Andrew,

    maybe the hilite net skill code was in-house from my previous company. it's similar to xl probe. but i thought cadence have a hilite net built in in virtouso.

    here's a desciption of the hilite net i'm used to:

    - it does work for vxl and regular layout and it can be use for schematic as well.

    - it's similar to xl probe but it can be used for regular layout. for example, when you open a layout not using vxl and want to trace a signal, it will trace the signal by "high lighting" the trace, similar to xl probe. and it does go down or up the hierarchy as long as it's connected, same with xl probe.

    - so the difference between xl probe and hilite net is, hilite net can be used for regular and vxl layout.

     

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  • Andrew Beckett
    Andrew Beckett over 15 years ago
    Well, Mark Net will do that for any layout...
    It's not as fast as a probe, because probing uses the connectivity in the database, and mark net has to follow shapes to figure out connectivity. Probe (in IC61) works on multiple hierarchy levels, but only a single level in IC5141; Mark Net works throughout the hierarchy in both versions.

    So is there a problem with using Mark Net? It's not clear to me why that wouldn't work for you.

    Regards,

    Andrew
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  • zeroskills
    zeroskills over 15 years ago

    well, mark net does the job, the only problem with it is, the layers are not visible enough. even if i cycle through it, all i get is very light un-shaded highlight layers.

    is there a way to change those highlight layers for mark net? and also, to get rid of the mark net, i have to click on the "marked net" and do "unmark net", can i do an "unmark net" without click the marked net? for example shift+j = mark net, ctrl+j= unmark net without clicking the marked net.

    here's a link i found in google in regards to hilite net/ hilight net. this is not me and i didn't did it, i only searched google if there's a similar skill code to what i'm used to. again, this is not me, and his smarter since he can code ;-) unlike me :-(

    http://home.educities.edu.tw/justin727/JW_Skill.files/Hilight_Net_Cell.htm

     

     

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  • Andrew Beckett
    Andrew Beckett over 15 years ago

    You could change the colours and fill of layers y0-y9 in the display resource editor (Tools->Display Resource Editor in the CIW, or can be accessed from the LSW).

    The appearance of any layer is under user control, in the same way that the hilite layers can be controlled. 

    Note that Mark Net seems to be hardcoded to use y0-y9 though.

    Regards,

    Andrew.

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