(A) hierarchical schematic capture system for VLSI design

Abstract

Program celled HIENA (Hierarchical Interactive Entry and Netlist Analysis) for schematic editing and extraction of electrical netlist has been developed to provide an integrated VLSI design environment based on EDIF under MS-DOS Version 3.0 on IBM PC AT. HIENA consists of three subprograms, SCHEMA, CONE, and HILINK; SCHEMA (SCHEMAtic editor) handles interactive schematic design entry and editing, and CONE (CONnectivity Extractor) extracts the connectivity information, i.e., netlist of each page drawn with SCHEMA, and HILINK (HIerarchical LINKer) is responsible for linking multiple pages with design hierarchy preserved and for providing the netlist information in EDIF format.