alternative way to load design variable?

Dear all,

In Cadence ADE, one often manually inputs the value for design
variables you already set in your schematic. In schematic's netlist,
you can see sth. like:

simulator lang=spectre
global 0 sub! vdd!
include ....../quantity.spectre
parameters YOUR DESIGN VARIABLE=XXX
include YOUR MODEL FILE

Obviously, the design variables are loaded/combined to your schematic
very early (at least earlier than loading of model files).

I wonder if I can bypass the step of manually inputing the value for
design variables? say, like loading a file from somewhere. I tried to
load the design variables file from "Model Library" and "Simulation
Files" in ADE, but it didn't work. It seems that this issues hasn't
been addressed in previous posts. Anyone can give me some clues?
Thanks!

rgds

-Andy

ps: my design variables files is like:
simulator lang=spectre
parameters YOUR DESIGN VARIABLE=XXX

 

That should work. What happened when you tried ?

 

Hi, fogh

Thanks for asking. I tried this method again with a simplest ckts: just
a voltage source plus a resistor.
1. I input "resistance" as the value of the resistor.
2. I create a file "test.parameter", which contains two lines as below:
simulator lang=spectre
parameters resistance=10
3. I add the path to the file "test.parameter" in the "Model Library
Setup".
4. Run a simple DC simulation.
5. I got the feedback from Cadence like:

Environment variable:
SPECTRE_DEFAULTS=-E
Command line:
/cds/IC5141/tools.sun4v/spectre/bin/32bit/spectre -env artist5.1.0
\
+escchars +log ../psf/spectre.out +inter=mpsc \
+mpssession=spectre0_22222_1 -format psfbin -raw ../psf \
+lqtimeout 900 input.scs
spectre pid = 22303

Loading /cds/IC5141/tools.sun4v/cmi/lib/4.0/libinfineon_sh.so ...
Loading /cds/IC5141/tools.sun4v/cmi/lib/4.0/libnortel_sh.so ...
Loading /cds/IC5141/tools.sun4v/cmi/lib/4.0/libphilips_sh.so ...
Loading /cds/IC5141/tools.sun4v/cmi/lib/4.0/libsparam_sh.so ...
Loading /cds/IC5141/tools.sun4v/cmi/lib/4.0/libstmodels_sh.so ...
spectre (ver. 5.10.41.041405 -- 14 Apr 2005).
Includes RSA BSAFE(R) Cryptographic or Security Protocol Software from
RSA
Security, Inc.

Simulating `input.scs' on aaron at 10:53:50 AM, Mon Apr 24, 2006.

Error found by spectre during circuit read-in.
"input.scs" 9: Top-level parameter `resistance' must be initialized
with a
value or expression.
"/home/********/test.parameter" 1: Parameter `resistance'
was previously defined.

Created directory ahdlcmi (770)
Created directory ahdlcmi/_grps_ef-

test_IBM7WL_IBM_PDK_bicmos7wl_rel_Spectre_models_mvcap.va.ahdlcmi/
(770)
Opening directory ahdlcmi (770)
Opening directory ahdlcmi/_grps_ef-

test_IBM7WL_IBM_PDK_bicmos7wl_rel_Spectre_models_mvcap.va.ahdlcmi/
(770)

Warning from spectre during AHDL read-in.
Multiple definitions found for ahdl primitive `mosvarcap'. Using
the first
definition.

Opening directory ahdlcmi (770)
Created directory ahdlcmi/_grps_ef-

test_IBM7WL_IBM_PDK_bicmos7wl_rel_Spectre_models_mvcap33.va.ahdlcmi/
(770)
spectre terminated prematurely due to fatal error.

Well, donu if I am going a wrong way?

rgds

-Andy