Browse Prior Art Database

Physical Modeling Initial and Final Value Definition for Pins

IP.com Disclosure Number: IPCOM000034446D
Original Publication Date: 1989-Feb-01
Included in the Prior Art Database: 2005-Jan-27

Publishing Venue

IBM

Related People

Authors:
Dubler, JF Robinson, SG Valashinas, DA [+details]

Abstract

Disclosed is a method of guaranteeing in an electronic design automation logic simulator/physical modeling system that the pins of a physical device are in a known state prior to each device computation and are left in a known state at the end of each device computation. Insuring that the pins are in a known state both at the beginning and at the end of each device computation eliminates the possibility of unpredictable or undesired results. Certain devices could produce unpredictable results when the initial values on the pins of a device are not in a known state prior to a device computation. The disclosed method defines a procedure for allowing the behavioral shell for a physical device to have an initial value defined for each pin of the device.