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Getting back source layout from gds

ImonMondal

Hi All,

I have made a stupid mistake while creating gds from my top level layout, and hence wanted to seek your help in case you have any solution.  

 

Here it goes:  I streamed out the gds from the layout using the export option in the CIW window of icfb.  In order to check if the gds is okay, I streamed it in using the import option. However, I didn't change the library name during the import process. Hence my original layout library files got overwritten with the gds import files. Now all the transistors, resistors and contacts have gotten renamed by some unique cryptic names and are being referred from the same library instead of the tech lib.

Is there any way to get back the source layout from the available gds, with all the instances referred from the correct tech lib ? 

 

-With Regards

Imon 

Parents

  • Andrew,
     
    Thanks for your response.
     
    I am using IC5. Unfortunately I went with the default options during stream out, and hence "Keep PCell" option was turned off, and our backup failed due to some unrelated issue.  The last personal back up that I had was a week old. So it looks like, all I can do is to manually restore  the final top level layout by comparing with the older one and re doing the changes.
     
    -Imon
     
Reply

  • Andrew,
     
    Thanks for your response.
     
    I am using IC5. Unfortunately I went with the default options during stream out, and hence "Keep PCell" option was turned off, and our backup failed due to some unrelated issue.  The last personal back up that I had was a week old. So it looks like, all I can do is to manually restore  the final top level layout by comparing with the older one and re doing the changes.
     
    -Imon
     
Children
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