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LIBRARY record

The LIBRARY record should be the first data record in the file, and can appear once only.

The flags byte of the record header can be used for a version number, which identifies in some way the remaining data in the file.

The LIBRARY record contains the following fields:

bytes field name purpose
8 munit machine units
8 uunit user units
8 cdate library creation date
8 mdate library modification date
? libname library name string

The first two fields are double-precision numbers that define the scale factors for the data in the file. These are interpreted in the same way as the similar fields in the header of a GDSII file.

The second two fields represent creation and modification dates for the file content.

A name string for the library follows. Strings are null-byte terminated, and an additional null byte is added if necessary so that the total length is even.


next up previous contents index
Next: STRUCT record Up: CGX Data Records Previous: CGX Data Records   Contents   Index
Stephen R. Whiteley 2022-05-28