oasis format

**OASIS** (Open Artwork System Interchange Standard) is the **next-generation IC layout file format designed to replace GDSII** — offering superior compression, no file size limits, and support for more complex geometric elements, specifically designed for the vast data volumes of advanced semiconductor designs. **OASIS Advantages Over GDSII** - **Compression**: 10-100× smaller file sizes than GDSII — through repetition compression and CBLOCK data compression. - **No Size Limit**: No 2GB file size limit — handles the multi-TB data volumes of advanced node designs. - **Parameterized Cells**: Support for parameterized repetitions — far more compact representation of regular arrays. - **Modal Data**: Properties apply to subsequent elements until changed — reducing redundant data. **Why It Matters** - **Data Volume**: Advanced node designs (5nm, 3nm) generate 10-100 TB of fracture data — GDSII cannot handle this. - **Transfer Time**: Smaller files = faster data transfer between design house, foundry, and mask shop. - **Adoption**: Increasingly adopted at advanced nodes — GDSII remains dominant for mature nodes. **OASIS** is **GDSII without the limits** — the modern IC layout format designed for the data deluge of advanced semiconductor manufacturing.