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Running Eldo<br />

Running Eldo Interactive Mode<br />

where = 1, 2, 3, and so on. When the -statfile argument is specified, the date and time are<br />

not appended to the output filename.<br />

Example with the extract_overshoot_opamp.cir netlist delivered in the examples tree:<br />

<strong>eldo</strong> -stat -statfile extract_overshoot_opamp.stat -statfsize 1<br />

extract_overshoot_opamp.cir<br />

Seven files (extract_overshoot_opamp.stat and extract_overshoot_opamp.stat.) will be<br />

generated, where n is 1 through 6, each with a maximum size of 1kB.<br />

Statistics File Options<br />

To change the number of items to be listed in each of the Simulation sections of the statistics file<br />

use .OPTION SPNNB=val. The default is 10. For example, .OPTION SPNNB=12 means every<br />

list under “Simulation: Rejection node list” is limited to the “top 12” items.<br />

To control the percentage threshold of the contributions from subcircuit instances, use<br />

.OPTION SPNRAT=val. The default is 0.7 (70%), and the range is between 0 and 1.<br />

Tip<br />

See also “Eldo Arguments” in the Eldo Reference Manual.<br />

Related Topics<br />

Using the Statistics File<br />

Invoking Eldo<br />

Running Eldo Interactive Mode<br />

Eldo interactive mode is a way of invoking Eldo and executing commands interactively instead<br />

of providing the commands in a netlist. Some other AMS tools, such as ICanalyst, transparently<br />

make use of Eldo in interactive mode. Eldo interactive mode is not supported by Questa ADMS.<br />

Procedure<br />

1. To invoke Eldo interactive mode, type:<br />

<strong>eldo</strong> cir_filename -inter<br />

where cir_filename is the name of the .cir netlist file to be simulated. Default extension<br />

is .cir.<br />

When working in Eldo interactive mode, a prompt is displayed in your terminal<br />

window:<br />

<strong>eldo</strong>><br />

2. When working in Eldo interactive mode, type your command after the <strong>eldo</strong>> prompt.<br />

For continuation lines, type the backslash character (\) at the end of a line.<br />

58<br />

Eldo® User's Manual, 15.3

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