>> IBIS 4.0 addresses this, enabling calls to external models. External models are NOT supported in IBIS 4.0. This is part of the draft IBIS 4.1 specification, still in discussion in the IBIS Open Forum. A vote for ratification has not been scheduled. Lynne Green Vice Chair, IBIS Senior Member of Consulting Staff, Cadence Design Systems, Inc. ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: http://www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List archives are viewable at: http://www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu