The role of VHDL in the MCC CAD system

description is given of a suite of utilities for manipulating VHDL (VHSIC Hardware Description Language) designs that has been developed and integrated into a CAD (Computer-aided design) system. The system is a tightly integrated environment supporting the sharing of design information between heterogeneous tools, using an underlying knowledge base built on top of an object-orientated distributed database. The VHDL utilities include an editing mode to provide syntactic assistance for writing VHDL an analyzer to produce intermediate representations, a compiler to translate the intermediate representations into directly executable Lisp functions, an elaborator for generating simulation models from complete design, and a simulator for these models. Experimentation, continued development, and several important extensions to the CAD System VHDL utilities are in progress

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