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Prakash <prakashkuve AT yahoo DOT com> wrote:

>          Here is an example of where having a DRC ignore <cellname>
> would be a great help. In SRAM layots, we might want to have a
> global cell which contains half the size of the via allowed in the
> process. The bitcell that contains this via cell would abut with a
> neighbouring bitcell and would get the other half from there. Hence
> it is no DR violation but MAGIC would flag off an error inside the
> cell and this would be repeated in all the nummerous bitcells.

Why would you not want the whole contact, and let the contact overlap
between bitcells?  It is not illegal nor unusual for subcells to overlap
and share contacts, they just have to overlap "exactly".

Philippe Pouliquen
The Johns Hopkins University

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