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cb2oa, missing vias

stuso

 Hi guys, when i translate from 5141 to OA i have some missing vias in my IC6 layout. Our PDK providers have the same process in 5141 and OA so we have only converted the design libs.

Looking at my PDK providers OA techlib it looks more complex regards via definitions, compared to 5141. In the OA techfile i see a standard vias & viaSpecs definition. I tried to manually edit the tech file and put my missing via definitions into these 2 sections but i noticed when i import this hacked OA techfile and dump it back out again that the viaSpec part has reverted to default...i.e my edits are gone, but the standardVias i added are still there. Crucially however when i open the layout with my new hached techfile attached to the lib the vias are still missing. any advice greatly appreciated, if this is a complex process i'll log an SR.

Thanks

Stu

 

 

 

 

 

Parents

  •  Hi Marc, yes i think an SR is required.

    i looked in the log and i cannot see any specific mention of vias or the specific vias which are missing. In the OA layout the missing vias are represented by marker layers with the name of said via shown in text as well. Does this suggest that cdb2oa has no issues translating these vias BUT that my OA techfile simply does not define these vias. For example in a similar situation i had some custom multipart paths (MPP) which were missing but to get them back all i had to do was modify my MPP code very slightly then re-load it in IC6 and they re-appeared.

    Thanks for your help.

    Stu

     

     

Reply

  •  Hi Marc, yes i think an SR is required.

    i looked in the log and i cannot see any specific mention of vias or the specific vias which are missing. In the OA layout the missing vias are represented by marker layers with the name of said via shown in text as well. Does this suggest that cdb2oa has no issues translating these vias BUT that my OA techfile simply does not define these vias. For example in a similar situation i had some custom multipart paths (MPP) which were missing but to get them back all i had to do was modify my MPP code very slightly then re-load it in IC6 and they re-appeared.

    Thanks for your help.

    Stu

     

     

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