Linda, Assuming the file is relatively simple and built correctly, you can do this conversion manually by deleting the V-t tables (the keywords [Rising Waveform] and [Falling Waveform] and the data with them). Change the [IBIS Ver] entry to "1.1" and run the IBISCHK4 parser on the file. Remove any keywords or subparameters that cause errors. If the [Ramp] in the original 3.2 file used a 50 ohm load, you should have a 1.1-compliant IBIS file after the changes. Note that you may lose more than a little detail in the response of the buffer -- IBIS 1.1 only supported simple ramp rates under the [Ramp] keyword. Other useful keywords and buffer types are not supported under IBIS 1.1 either. In other words, the conversion may give you a file that is compliant to 1.1, but is far less useful! - Michael Mirmak Intel Corp. Chair, EIA IBIS Open Forum -----Original Message----- From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On Behalf Of Linda Zhang Sent: Friday, January 19, 2007 17:54 To: si-list@xxxxxxxxxxxxx Subject: [SI-LIST] Does anyone know how to convert IBIS version 3.2 to version 1.1? The IBIS to PSPICE converter only works for IBIS version 1.1, but the vendor gives me the IBIS model of version 3.2. I have to run it in PSPICE. Does anyone know how to convert ver 3.2 to ver 1.1? Thank you in advacne. =20 Linda=20 =20 --------------------------------- The fish are biting. Get more visitors on your site using Yahoo! Search Marketing. ------------------------------------------------------------------ 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 technical documents are available at: http://www.si-list.net List archives are viewable at: =20 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 =20 ------------------------------------------------------------------ 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 technical documents are available at: http://www.si-list.net 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