Browse Prior Art Database

Method to Insure Correct Values Propagated From a Physical Device

IP.com Disclosure Number: IPCOM000034482D
Original Publication Date: 1989-Mar-01
Included in the Prior Art Database: 2005-Jan-27

Publishing Venue

IBM

Related People

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

Abstract

Disclosed is a procedure for guaranteeing that values propagated from a physical device in a logic simulator/physical modeling system are the correct values for that simulation time. Correct values are assured by having the behavioral shell for the physical device wait for the delay time and then propagate the current output values. Using this procedure, no physical device output values are ever propagated into the future. Net values derived from a physical device computation that are scheduled into a future simulation time queue could be incorrect based upon subsequent computations performed prior to the net actually taking on the scheduled value.