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Instances with placement status "unplaced"

RVERP

I have a bunch of instances in my layout with placement status "unplaced". They aren't shown in virtuoso, but they appear in my stream out gds, causing a lot of DRC errors.

I can simply remove them with dbRemoveObject, so this is easy to fix. But I don't know how they got there. How do you end up with an unplaced instance?

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  • rajeshcad
    If someone does that deliberately in virtuoso a warning is issued saying that instance will become invisible. If the design was taken outside virtuoso environment then that could be the cause. Or, if someone tried a misadventure with SKILL :-)
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  • rajeshcad
    If someone does that deliberately in virtuoso a warning is issued saying that instance will become invisible. If the design was taken outside virtuoso environment then that could be the cause. Or, if someone tried a misadventure with SKILL :-)
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