Open Artwork System Interchange Standard

Open Artwork System Interchange Standard (OASIS (TM)) is a specification for hierarchical integrated circuit mask layout data format for interchange between EDA software, IC mask writing tools and mask inspection tools.

The name is the trademark of SEMI (http://www.semi.org). It is developed by SEMI for microelectronics/semiconductor industry as a replacement for GDSII format, the IC industry de facto standard for IC layout data exchange for more than two decades.

Like GDSII, OASIS (TM) is a hardware- and software-independent binary format.

It delivers the following improvements over GDSII:

Up to 10 times smaller file sizes
Support of 64-bit arithmetics
Richer data format for exchange of information between design and manufacturing stages.

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