All, The Analog BIRD that I had earlier sent out was more of a concept BIRD showing how Buffer and Package ISS models could be defined in a consistent way. I split the Analog BIRD into a Buffer BIRD and a Package BIRD. I also simplified them, and, in particular, took the comments from the Interconnect Committee and updated the Package BIRD accordingly. These are still concept proposals that need discussion in both the IBIS ATM and Interconnect committees. Walter Walter Katz wkatz@xxxxxxxxxx Phone 303.449-2308 Mobile 720.333-1107