[Author Prev][Author Next][Thread Prev][Thread Next][Author Index][Thread Index]
gEDA-user: Gnucap crash
Hello Al and other Gnucap developers on this list...
I posted a message similar to this to the gnucap list a few days ago,
but I suspect the list manager bounced me since I'm not on the list --
I don't see it in the archives anyway. Since then, I've learned some
more, so hear I go again...
The following netlist crashes the 3-29 snapshot when I run it on my
PC. When compiled with debugging enabled, I get an assertion failure.
* gnetlist -g spice-sdb -o spice.netlist.wpd TwoStageAmp.sch
.model 2N3904 NPN(IS=1E-14 VAF=100
+ Bf=300 IKF=0.4 XTB=1.5 BR=4
+ CJC=4E-12 CJE=8E-12 RB=20 RC=0.1 RE=0.1
+ TR=250E-9 TF=350E-12 ITF=1 VTF=2 XTF=3 Vceo=40 Icrating=200m mfg=Philips)
R5 Vin 1 10
.OP
RE1 0 Vem1 100
Q1 Vcoll1 Vbase1 Vem1 2N3904
R2 0 Vbase1 2K
.end
The crash/assertion failure occurs when I execute the "op" command at
the Gnucap prompt.
I've poked around and it appears that since I execute the ".op"
command halfway through the script, 'DEV_RESISTANCE::precalc()' never
gets called for RE1 and R2, leading to unpleasantness.
Poking around some more, I see in 'SIM::init()' where 'precalc()'
would be called, and I wonder if it would do any harm to move the call
to 'precalc()' to be outside the if statement. At that point, I stop,
since I don't know enough about the overall design and implementation
of Gnucap to know if invoking the 'precalc()' method multiple times on
the elements in a design would be a good thing or not.
So, now I'll turn this over to the experts. Have fun! :-)
--wpd
_______________________________________________
geda-user mailing list
geda-user@xxxxxxxxxxxxxx
http://www.seul.org/cgi-bin/mailman/listinfo/geda-user