Hi Quek, After changing to SCONNECT commands the PVS LVS was passing but I couldn't get the stamp=2 feature in my QRC extraction to take effect. An example of R extracted spice netlist from my modified Assura LVS and QRC: X0 net8#2 in#307 vss#75 vss#70 nch_mac L=4e-08 W=1.4e-07 X1 net8#4 in#306 vdd#322 vdd#312 pch_mac L=4e-08 W=1.4e-07 The 4th bulk terminals are connecting to sub-nodes of vss/vdd. The same layout with my modified PVS LVS & QRC: XM0 net8#2 in#303 vss#75 vss nch_mac L=4e-08 W=1.4e-07 XM1 net8#4 in#300 vdd#316 vdd pch_mac L=4e-08 W=1.4e-07 The 4 bulk nodes are still connecting to the original vss/vdd. I did also investigate using STAMP instead of SCONNECT for psub/nxwell but I found it doesn't work the same in PVS compared to Assura (& possibly Calibre). Instead of stamping connectivity from one layer to another it wants to create a new output layer with the stamped connectivity. I go back to my original question - does stamp=2 work with a PVS LVS flow? Since the examples in the documentation only describe what happens with Assura LVS I can't be sure. Thanks, Robin
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