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Re: selective drc error supression


From: Pierce Keating
Subject: Re: selective drc error supression
Date: Sun, 22 Apr 2007 10:36:08 -0700 (PDT)

Hi Dima,
 
Thanks for the tip on connecting via the P-Active arc, that seems to work. I'll have to experiment a bit more to see if I can get rid of other errors of this type. There are a lot of overlap and touching errors in the padframe I downloaded from Mosis but I don't think there's anything I can do about that (beyond re-laying out the pads).
 
Thank very much!
Pierce


address@hidden wrote:
Hello Pierce,

Try to connect port of P-transistor and Metal1-P
Active contact by
a short P-Active arc.

If nodes are not connected by arc, Electric doesn't
know that you want them to be connected,
and it thinks that you overlapped them accidently.

-Dima
Hello,
 
Is there a way to stop designated DRC errors? For example, when a Metal1-P Active connector is placed on a P transistor active region, a DRC error is generated:
 
DRC error 4 of 7: Spacing (layer P-Active): node Metal-1-P-Active-Con OVERLAPS arc P-Active [rule 2.2]
 
However I am merely connecting the transistor drain, so I would like to suppress this error.
 
Other times like layers might be intended to touch and a DRC error is correctly generated. However, I would often like to selectively suppress these errors as well. Is there a way to do this?
 
Thanks very much,
Pierce

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