I don't know what UIC is, but you can use .IC ".ic0" file to load the node voltage in the .ic0 file , I think all the node voltages are in the file. Those voltages are the voltages you saved when you did last simulation and choose .save LEVEL=ALL.
【 在 SchoolMaster (校长) 的大作中提到: 】 ∶ I don't know what UIC is, but you can use ∶ .IC ".ic0" file to load the node voltage in the .ic0 file What i want to know is how to create <design>.ic0 file
∶ , I think all the node voltages are in the file. Those voltages ∶ are the voltages you saved when you did last simulation and choose ∶ .save LEVEL=ALL. As i said, i did add the .save sentence in the netlist, but hspice did not write the ic0 file when i used UIC option.
About UIC, the manual says: UIC Causes Star-Hspice to use the nodal voltages specified in the .IC statement (or by the “IC = ” parameters in the various element statements) to calculate the initial transient conditions, rather than solving for the quiescent operating point.
☆─────────────────────────────────────☆ toctory (等待……I can wait to be King) 于 (Tue Jul 8 08:59:05 2003) 提到:
【 在 flydragon (InWell~WellIn) 的大作中提到: 】 ∶ What i want to know is how to create <design>.ic0 file ∶ As i said, i did add the .save sentence in the netlist, but hspice did ∶ not write the ic0 file when i used UIC option. ∶ About UIC, the manual says: ∶ UIC Causes Star-Hspice to use the nodal ∶ voltages specified in the .IC statement (or ∶ by the “IC = ” parameters in the various ∶ element statements) to calculate the ∶ initial transient conditions, rather than ∶ solving for the quiescent operating point.
☆─────────────────────────────────────☆ toctory (等待……I can wait to be King) 于 (Tue Jul 8 09:03:19 2003) 提到:
∶ uic可以指定ic不能指定的一些器件参数，例如电感电流等等。但是使用uic时如果没有 ∶ 给全电路的ic点，则没有给出的ic点将会为0(?这块我不能肯定，呵呵。)而器件则为of ∶ f状态。这可能就是你使用ic和uic结果不一致的原因。 Manual上只是说： If you specify the UIC parameter in the .TRAN statement, Star-Hspice does not calculate the initial DC operating point, but directly enters transient analysis. Transient analysis uses the .IC initialization values as part of the solution, for timepoint zero (calculating the zero timepoint applies a fixed equivalent voltage source). 怎样DIRECTLY ENTERS没明确答案，估计是你说的那样，用.op 1f看的结果也比较符合
∶ uic,.ic中电压直贝作为来计算直流工作点的起始电压。 搞错了吧，.nodeset才是计算直流工作点的初始电压： .NODESET initializes all specified nodal voltages, for DC operating point analysis
☆─────────────────────────────────────☆ toctory (等待……I can wait to be King) 于 (Tue Jul 8 23:17:57 2003) 提到:
【 在 flydragon (InWell~WellIn) 的大作中提到: 】 ∶ Manual上只是说： ∶ If you specify the UIC parameter in the .TRAN statement, Star-Hspice does not ∶ calculate the initial DC operating point, but directly enters transient ∶ analysis. Transient analysis uses the .IC initialization values as part of the ∶ solution, for timepoint zero (calculating the zero timepoint applies a fixed ∶ equivalent voltage source). directly enters trans analysis应该就是不算dc点了吧，呵呵。所以用uic如果不给全 初始值的话结果会不对的。 你一定要用.uic吗？我很奇怪，有很多方法可以避免啊。 ∶ 怎样DIRECTLY ENTERS没明确答案，估计是你说的那样，用.op 1f看的结果也比较符合 ∶ 但在使用UIC时.op也不会记录0时刻工作点信息，大概认为这是已知的？ 我认为这样很可能。 ∶ 多谢帮忙。
☆─────────────────────────────────────☆ toctory (等待……I can wait to be King) 于 (Tue Jul 8 23:20:52 2003) 提到:
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