Syntax: !fx keyword [arg]This command is a prompt-line equivalent to most of the functionality of the FastCap/FastHenry interface. This interface is also controlled from the RLC Extraction panel, which is produced by the Extract RLC button in the Extract Menu.
The first argument is a keyword, which must be present and must be one of those listed below. The second argument is optional or required for some of the keywords. Most of the keywords indicate an operation that is equivalent to pressing one of the buttons in the RLC Extraction panel.
In general, all existing partitioning will be lost. This is always true of FastHenry data. The polygons from the file will be merged with existing polygons on the same layer if they touch or overlap, or added if they are isolated. All partitioning will be recreated, as if the data were freshly read.
For FastCap data, it is possible for some of the existing partitioning to be retained. This requires:
If these conditions apply, then the existing partitioning of the conducting objects will be retained. The dielectric interface partitioning, however, is not retained, and will be recreated. The user must refine this if necessary.
This functionality is available only from the !fx command, and not the graphical pop-up.
If the optional ``-s'' option is given, this will append to or create two files: filename.top and filename.bot. If the files exist, they will be appended to. Concatenating the two files (e.g. cat file.top file.bot > file.lst) will produce a standard unified list file. This option enables output from different FastCap preprocessor runs to be combined.