The 1.1o draft version of the IBIS Quality specification is attached, and also uploaded to the IQ web site: http://www.vhdl.org/pub/ibis/quality_wip/ Revision comments: Suggest Terminator model in 3.2.1. Merge 3.2.5 into 3.2.4. Deleted 3.1.3, 3.2.2, 3.2.3, 3.2.5. Mike