TOPOLOGIZER: An Expert System Translator of Transistor Connectivity to Symbolic Cell Layout

TOPOLOGIZER is an expert system for the design of CMOS cells. TOPOLOGIZER uses heuristics (rules) specified by an expert designer to produce a custom-fit symbolic leaf-cell from a transistor connection description and a description of the environment in which the cell will reside. A symbolic layout system converts the symbolic description to a mask level description.