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"freeing" nets in 6.1.x VXL

linbo

 Does anyone have any hints for "freeing" shapes and vias from their net connectivity in VXL 6.1.x?  It seems the sticky net problem from a long time ago is back.

 

Example:

 I have a via on a net named foo with an error marker.  If I query the via the net is vdd.  When I extract, the error marker remains and the error shape is still there and the via's net is still vdd.  Despite quitting out of Cadence session and restarting the dang via remains firmly connected to vdd.  It is clear that vdd is not involved in any way with the via or the net.

 The only way I can get the via to "free" it's net assignment is to copy the via to a second via, delete the first one and place the new copy onto the net named foo.   If I re-extract the net on the via is now foo.

 

If someone has some skill code out there that could fix this I would really appreciate it.  If you work for a company that wants the layouts to be "XL compliant" this is a real pain.

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  • Andrew Beckett

    OK, but making comments on the forum won't result in enhancement requests being filed with R&D, so a service request would allow your suggestions to be properly discussed and make it through to R&D.

    Note that there are major differences in Layout XL in IC61 - for example, the binder is now net based (rather than instance based) and as such it tends to do a far better job of matching the schematic and layout even when you do things like copy - because there's no requirement for the instance names to match.

    You can also force a re-extract, Connectivity->Update->Extract Layout (there's an icon for this).

    Best Regards,

    Andrew.

Reply
  • Andrew Beckett

    OK, but making comments on the forum won't result in enhancement requests being filed with R&D, so a service request would allow your suggestions to be properly discussed and make it through to R&D.

    Note that there are major differences in Layout XL in IC61 - for example, the binder is now net based (rather than instance based) and as such it tends to do a far better job of matching the schematic and layout even when you do things like copy - because there's no requirement for the instance names to match.

    You can also force a re-extract, Connectivity->Update->Extract Layout (there's an icon for this).

    Best Regards,

    Andrew.

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