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Subject: Dynamic Shape relief
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ThomasMiller
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3/25/2005 9:20 AM  
I have probably 50 dynamic shapes on my current design and a handful of them are being problematic. I am running ver. 15.2 s068 on Windows XP. The problem that I am seeing is that I get all the Shapes laid down perfectly with no DRC errors, then I will update my silkscreen or some other non-related task and come back to find that I have 20 shape errors. I have my DRC set to 5 mil backoff from all shapes. The errors all report I have 4.99 mils clearance and the DRC value is set to 5 mils. I have to go back manually and update each shape to clear the error. There has to be a better way!
Padmin
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3/25/2005 9:29 AM  
I would recommend disabling your dynamic shape fill mode until you are done (Setup > Drawing Options > Status tab).

Also, you could try adding a small oversize value. See SourceLink Solution 11104124; title: P-S DRC error after my dynamic shape voids the pins and vias.

Hope this helps.
ThomasMiller
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3/25/2005 10:41 AM  
Adding a little bit of overage in my Via to Shape backoff has worked, but it seems like a very odd workaround. I will continue to figure this out.
Ulf Kylenfall
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4/05/2005 12:51 AM  
IMHO: Cadence _could_ add a "Regenerate" button in the shape menu. It is a bit cumbersome to turn off and on shapes just to get a shape regeneration...
Padmin
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4/05/2005 6:26 AM  
I agree, but did you know you can do this under Setup > Drawing Options, by selecting the "Update to Smooth" button? There is an enhancement request submitted asking for the ability to update a single dynamic shape from the shape menu so you don't have to move a component 'ix 0' to update the single shape. Hope this helps!
ThomasMiller
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4/05/2005 8:03 AM  
Isn't it totally weird to have to update your Shape from the Setup Menu? Why not put Update Shapes on the Shape menu where 99% of population would think to look for it??
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Forums > Silicon-package-board > PCB Design > Dynamic Shape relief


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