The Magic VLSI Layout System
Abstract
Magic is a new IC layout system that includes several facilities traditionally contained in separate batch-processing programs. Magic incorporates expertise about design rules, connectivity, and routing directly into the layout editor and uses this information to provide several unusual features. They include a continuous design-rule checker that operates in background and maintains an up-to-date picture of violations; a hierarchical circuit extractor that only re-extracts portions of the circuit that have changed; an operation called plowing that permits interactive stretching and compaction; and a suite of routing tools that can work under and around existing connections in the channels. A design style called logs and a data structure called corner stitching are used to achieve an efficient implementation of the system.
- Publication:
-
IEEE Design & Test of Computers
- Pub Date:
- February 1985
- DOI:
- Bibcode:
- 1985IDTC....2...19O
- Keywords:
-
- Very large scale integration;
- Routing;
- Data structures;
- Large scale integration;
- Application specific integrated circuits;
- Data mining;
- Design automation;
- Wires;
- Spatial databases;
- Circuit simulation
