I am currently working on some pcells under 90nm technology. And I have finished the mosfet without specifying its connectivities. Then I find the auto-abutment capability of virtuoso XL could be very useful for our project, so I followed the instructions in virtuoso XL user guide to alter my nmos pcell. However, no matter what I do, the abutment can never triggered, I have already opened the abut server, abut device and connectivity extractor options. I even tried the sample pcells of cadence, but still can not see abutment occur.
Therefore. I wonder could you please give me some detailed guidence about how to declare the pins of a mosfet pcell( such as G. S, D ) to meet the abutment requirements, and how to make auto-abutment happen? And how can I debug my skill code to find where I made mistakes?
Thank you very much!