Qilong, The icpriority parameter is controlling the order of the readns/readic parameter and the "nodeset"/"ic" statements in the netlist (see "spectre -h nodeset" and "spectre -h ic". It is not about the ic parameter on capacitors or inductors. As far as I know, the initial conditions read from a file with readic will always override the initial conditions specified on the instance directly - no contradiction here at all. I don't understand what you mean by "Furthermore, is there any priority table that can used to check the order of use between ic, skipdc, readic and readns?" - maybe I've explained it though? Essentially a nodeset is a help at the beginning of DC convergence - the forces are applied, DC convergence is reached, and then the forces removed and it then attempts to continue with DC convergence. Initial conditions are held for the entire duration of the DC convergence (so they are a stronger force). The skipdc parameter controls whether a DC solution is found, or whether various advanced methods are used instead (such as waveless, rampup, sigrampup and so on). Regards, Andrew.
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