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From: Jeff Sondeen (sondeen AT ISI DOT EDU)
Date: Thu Oct 03 2002 - 14:55:35 EDT

  • Next message: Jeff Sondeen: "Re: problems with connectivity in magic" 

    R. Timothy Edwards writes:
 > Dear Mika,
 > 
 >    The source of the problem seems to be this:
 > 
 > << m2contact >>
 > rect 168 396 172 400
 >    .
 >    .
 >    .
 > << polycontact >>
 > rect 168 396 172 400
 > 

 > The "SCN6M_SUBM.10.tech27" does not support (I don't know if this
 > is correct or not according to the process design rules) via
 > overlapping poly contact.

you're right, Timothy.  this is a problem with magic in that both
types 'm2c' and 'pc' reside on the metal1 plane (and there can only be
one type there in magic, so the last one in wins).  it's ok to stack
vias on top of 'pc's (thus 'pm12c').  the new style tech files (to be
in alpha soon) put m2c's (actually v1's) on the metal1 plane and 'pc's
on the active plane, avoiding this problem.

thanks,
/jeff

by the way, i always get several bounced replies when emailing
magic-dev AT csl DOT cornell.edu, can that be fixed?

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