Collett International, Inc., Santa Clara, CA;AT&T Bell Labs., Murray Hill, NJ;Vincentelli - Univ. of California, Berkeley, CA;Zycad Corp., Fremont, CA;Quickturn Design Systems, Mountain View, CA;Intel Corp., Hillsboro, OR;Philips ITCL, Leuven, Belgium;Rockwell/CMC, Santa Barbara, CA