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  3. skill code to find floating vias in layout

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skill code to find floating vias in layout

pham777
pham777 over 12 years ago

when I do lvs verification, the one I hate most is the short causing by floating vias in sub block(sub block is lvs/drc cleaned), especially

the sub-block has irregular shape (like a squid, spreading out all over to other blocks, for example, clock buffers..). I wonder if someone

can write a skill code to find floating vias in layout (floating vias means vias not connected to any nets or any instances).

I'm using cadence ic615.06.15.151

Thanks,

ha

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  • pham777
    pham777 over 12 years ago

    Hi Ted,

    If floating vias are just big enough, drc can not catch them. DRC also don't do anything with PSUB2 layer

    I am a layout guy, don't know much about writing SKILL. Could you be more specific about using dbGetTrueOverlaps in a procedure

    format.

    Thanks a lot,

    ha

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  • pham777
    pham777 over 12 years ago

    Hi Ted,

    If floating vias are just big enough, drc can not catch them. DRC also don't do anything with PSUB2 layer

    I am a layout guy, don't know much about writing SKILL. Could you be more specific about using dbGetTrueOverlaps in a procedure

    format.

    Thanks a lot,

    ha

    • Cancel
    • Vote Up 0 Vote Down
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