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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 OASIS is a trademark of the Semiconductor Equipment and Materials Institute (SEMI). It was developed by SEMI for the microelectronics/fabrication 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 data 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.
"Open Artwork System Interchange Standard"