luke/magic - magic - Gitea: Git with a cup of tea

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Corrected two errors related to extraction: (1) All parasitic extraction: The "defaultperimeter" and the "defaultsideoverlap" commands were failing to exempt types other than space from the list of edges from which fringing capacitance is evaluated. This led to incorrectly considering the boundary between types such as poly and nfet, or between metal1 and rm1, to be sidewall areas. The "default" statements are supposed to consider the most common usage, so the code has been changed to make sure that only edges from material to space are considered. In the rare case that a material-to-material edge in the same plane should be considered a sidewall, the non-default statements can be used instead. (2) Hierarchical parasitic extraction: Magic was incorrectly adding capacitances for subcells which had been output already when handling subcircuit connections during "ext2spice". This duplicate counting has been eliminated.

2026-01-30 22:47:36 +01:00

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