OpenRAM/PORTING.md

Porting to a New Technology

If you want to support a new technology, you will need to create:

• a setup script for each technology you want to use
• a technology directory for each technology with the base cells

We provide two technology examples for [SCMOS] and [FreePDK45]. Each specific technology (e.g., [FreePDK45]) should be a subdirectory (e.g., $OPENRAM_TECH/freepdk45) and include certain folders and files:

• gds_lib folder with all the .gds (premade) library cells:
  • dff.gds
  • sense_amp.gds
  • write_driver.gds
  • cell_1rw.gds
  • replica_cell_1rw.gds
  • dummy_cell_1rw.gds
• sp_lib folder with all the .sp (premade) library netlists for the above cells.
• layers.map
• A valid tech Python module (tech directory with __init__.py and tech.py) with:
  • References in tech.py to spice models
  • DRC/LVS rules needed for dynamic cells and routing
  • Layer information
  • Spice and supply information
  • etc.