Greg, You got it exactly right. Walter From: ibis-macro-bounce@xxxxxxxxxxxxx [mailto:ibis-macro-bounce@xxxxxxxxxxxxx] On Behalf Of Gregory R Edlund Sent: Friday, March 07, 2014 9:25 AM To: IBIS-ATM Subject: [ibis-macro] AMI Statistical Enablement I'm pretty sure I asked this question a long time ago, but I can't find my notes. Too many bits and bytes for a tired old brain... What state of these parameters is required to support statistical simulation in an IBIS 5.1 model? GetWave_Exists Init_Returns_Impulse If I remember correctly, statistical simulation does not use the results of the GetWave function, so GetWave_Exists could be true or false. Init_Returns_Impulse means the DLL perfoms equalization by changing the impulse response that came from the EDA tool (as opposed to modifying the time-domain waveform). It seems like Init_Returns_Impulse should be true to enable statistical simulation. Did I get this right? Greg Edlund Senior Engineer Signal Integrity and System Timing IBM Systems & Technology Group 3605 Hwy. 52 N Bldg 050-3 Rochester, MN 55901