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From: R. Timothy Edwards (tim AT stravinsky DOT jhuapl.edu)
Date: Tue Jan 08 2002 - 12:41:10 EST

  • Next message: Jeff W. Sondeen: "Re: -- SCN5M_SUBM.15.light.tech27"

    Dear magic hackers,
    
       I'm in the middle of recoding the CIF and GDS input and output sections
    to new heights of sophistication.  This includes rescaling everything in a
    design so that the grid space (magic units per lambda) can be changed at any
    time, including during CIF and GDS input.  This means that when magic reads
    non-magic-generated CIF and GDS, and finds geometry on finer scales than 1/2
    lambda, it will redefine its own grid such that the grid is fine enough to
    accept all input without altering any geometry.
    
       I also implemented a new DRC rule called "widespacing" to accept rules such   
    as "if m1 width > 10um, then spacing to unconnected m1 must be at least 0.6um"
    that seem to abound in modern processes.  It's actually a rather elegant
    implementation, making use of the same code as the drc extensions' "maxwidth"
    rule.  At least, I hope it will be regarded as elegant.
    
       Concerning the Darwin port emailed to the magic-dev group:  Please don't
    make any other changes until I write back the changes mentioned above.  I'll
    take care of the Darwin port additions when I'm finished.
    
    							Regards,
    							Tim
    


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