At 08:30 PM 7/12/2012, you wrote:
I have been trying to find a way to control parameters to be output
in a spice netlist, in addition to the standard parameters that
Electric outputs. For example, Electric outputs resistance value for
resistors in the spice netlist. But I want to netlist resistor
length, width and number of modules. How can I control this? If
anyone has done this before, I'd appreciate giving me a clue about
where to look and if possible an example.
Thanks
This can be done in a number of ways:
(1) Build your own components and use them instead of the built-in
primitives. For example, instead of using the Resistor primitive in
the schematics technology, create a schematic cell called
"my-resistor" (and an icon cell of the same name that has a resistor
symbol in it). Then add a Spice Template to the schematic cell, which
has an arbitrary line of Spice code in it. This will work for simple objects.
(2) For more complex situations, you can create Spice parameters that
consist of code (either Spice code or Java code). These parameters
can compute arbitrary values based on the context of the cell, etc.
To see examples of such complex cells, look at the logical effort
libraries that come with Electric, and define schematic symbols with
code in them.
-Steven Rubin
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