eldo_user

Eldo Control Language
Statement Overview
set w1 = 0
set w2 = 0
set w3 = 0
set w4 = 0
simulation(tb(), w1=@wave1, w2=@wave2)
w3 = w1 + 1
w4 = w1 + w2
Examples
Example One
.define_testbench follower
.connect inn out
.ac dec 10 1 1g
* need to give a name to the waveform like this to be able to get it back
from the simulation command:
.plot ac voutdb_wave=vdb(out)
.end_define_testbench
.define_task opamp_gain_max_from_wave
/* This example shows how to retrieve a simple AC waveform,
and use it to extract its maximum value (a very complicated way).
*/
set vout=0
set i=0 max_gain=-1000 imax=0 x=0.0 y=0.0 iter=0
simulation(
+ powersupply(pvdd = 2.0),
+ follower(),
+ vout = @voutdb_wave)
iter = beginval(vout, x, y)
while (iter != 0)
if (y > max_gain)
max_gain = y
imax = x
endif
iter = nextval(vout, x, y)
endwhile
fprint (stdout, "Maximum gain : %.5g at frequency = %.5g.\n",\
max_gain, vout.x[imax])
.end_define_task
.opamp_gain_max_from_wave()
See “Testbenches” on page 809, “Tasks” on page 814, “Variables” on page 821, “Flow Control
Statements” on page 835, “Defining and Running Simulations” on page 841, and the fprint,
beginval, and nextval functions for more information on the concepts used in the example.
832
Eldo® User's Manual, 15.3