TALIB: An IC Layout Design Assistant

Jin Kim, John McDermott

This paper describes a knowledge-based system for automatically synthesizing integrated circuit layouts for NMOS cells. The desired cell layouts are specified in terms of their general structural and functional characteristics. From these initial specifications, the system produces correct and compact cell layouts. The system performs this task by generating plan steps at different levels of abstraction and opportunistically refining each plan step at one level to more specific steps at a lower level. Although the implementation of this system has focused on NMOS technology, the techniques used are not restricted to that technology.'

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