Hi All, The latest version of the Backchannel BIRD (draft 10) has been uploaded on the ATM website and is available here: http://www.vhdl.org/ibis/macromodel_wip/archive/20140804/ambrishvarma/Backchannel%20support%20BIRD%20147%20draft%2010/Backchannel_BIRD147_Draft10.docx Or http://tinyurl.com/bcibird10 This is the version that was discussed at the 07/29/2014 ATM. Please let me know if there are any questions. Thanks, Ambrish. Ambrish Varma. Cadence Design Systems.