spectre: save all currents connected to a given node, but exclude given connections

Dear Zol,

Zol said:

Is there any way to exclude some terminals, like the bulk of the transistors or the supplies of digital cells (I can match a pattern to the terminal names)? I tried

save my_node:currents probelvl=2 exclude=[*:b *:inheretedSupplyName]

But it does not work.

From my understanding,  by default, the save statement in spectre uses the terminal name for element currents and the terminal index for subcircuit terminals. Assuming your transistors are implemented as subcircuits, the save statement will use its terminal number and not its name. I think you can check this by examining your input.scs file. This might explain why your attempt to exclude the bulk node terminal currents using the syntax "*:b" is not excluding the bulk node currents. You can change the default behavior to use the terminal name by setting the option useterms=name. I just searched the site, and there is a Troubleshooting article at URL:

support.cadence.com/.../ArticleAttachmentPortal

that relates to this issue that may be helpful if you did not find it in your search.

Shawn

Thanks for the reply. I set useterms=name through ADE's Environment Windows. I confirmed it in the netlist. I am saving only selected currents. I have only one save statement for the currents, and I still see the bulk currents. I have not seen any mention about the save statements in spectre.out. I have this problem with baseline spectre and with APS as well.

Can you think of anything else, what I should set to make it work?

I use IC 6.1.8-64b.500.13.EHF7868 with spectre 20.1.0.348.isr10 64bit

I tried with the latest Spectre (21.1.0.664.isr16) and it doesn't seem to be possible as far as I can see.

You should contact customer support.

Regards,

Andrew