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The Flatten Button: Flatten Hierarchy

This button brings up a small pop-up which controls flattening of the hierarchy by moving the contents of selected subcells into the current cell. A Depth choice menu selects the depth into the hierarchy to flatten. If 1, only geometry in the subcell is flattened, and sub-subcells are placed. If ``all'', the entire subcell hierarchy is flattened. There is also a button to skip box and wire merging and undo list processing operations for speed. This may be desirable for flattening complex cells, which may take a long time to process. In this mode, there is no ``undo'' capability, however.

The Flatten button on the pop-up initiates the operation. The subcells to be flattened must have been selected at this point.

Pressing Ctrl-C will pause the process, and give the user the option of terminating the job. It is usually not desirable to stop in the middle of a flatten operation, but invoking this prompt may reassure the user that the operation is in progress and not ``hung''.

The symbolic data from flattened subcells are added to the symbolic part of the current cell, in electrical mode. This will only be visible if the current cell is in symbolic mode (see the symbl button).


next up previous contents index
Next: The Create Cell Button: Up: The Edit Menu: Modify Previous: The Pop Button: Pop   Contents   Index
Stephen R. Whiteley 2006-10-23