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Date:      Sun, 14 Oct 2012 22:26:34 +1000
From:      Da Rock <freebsd-questions@herveybayaustralia.com.au>
To:        User Questions <freebsd-questions@freebsd.org>
Subject:   OT: gEDA, SPICE, electronic cad/simulation
Message-ID:  <507AAF7A.9070909@herveybayaustralia.com.au>

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I'm struggling with this damn gEDA/SPICE thing - I think I have gEDA 
schem figured, but I can't be sure because I can't test it. For the life 
of me I can't seem to get my head around it, but then I might just be 
too tired.

Can anyone point out what I'm missing? I open geda, create a sch file 
(circuit), and then run gnetlist -g spice-sdb <sch-file>. I then run 
ngspice (or gspiceui) but it comes up with errors over the 555 (U1) and 
diodes (d?) I'm running like this:

Error on line 9 : d1 2 0 unknown
      unable to find definition of model unknown - default assumed
Error on line 13 : u1 0 4 3 +9v 1 4 5 +9v unknown
      unable to find definition of model +9v - default assumed

      unknown parameter (4)
Doing analysis at TEMP = 27.000000 and TNOM = 27.000000


CPU time since last call: 0.040 seconds.

Total CPU time: 0.040 seconds.

Current dynamic memory usage = 0 bytes,
Dynamic memory limit = 32742.316406 MB.

Warning: can't parse '0': ignored
Warning: can't parse '0': ignored
Warning: can't parse '0': ignored
Warning: singular matrix:  check nodes 1 and 1

Warning: singular matrix:  check nodes 1 and 1

Note: starting dynamic Gmin stepping
Trying gmin =   1.0000E-03 Note: One successful Gmin step
Trying gmin =   1.0000E-04 Note: One successful Gmin step
Trying gmin =   1.0000E-05 Note: One successful Gmin step
Trying gmin =   1.0000E-06 Note: One successful Gmin step
Trying gmin =   1.0000E-07 Note: One successful Gmin step
Trying gmin =   1.0000E-08 Note: One successful Gmin step
Trying gmin =   1.0000E-09 Note: One successful Gmin step
Trying gmin =   1.0000E-10 Note: One successful Gmin step
Trying gmin =   1.0000E-11 Note: One successful Gmin step
Trying gmin =   1.0000E-12 Note: One successful Gmin step
Trying gmin =   1.0000E-12 Note: One successful Gmin step
Warning: singular matrix:  check nodes 1 and 1

Warning: Dynamic Gmin stepping failed
Note: starting source stepping
Supplies reduced to   0.0000% Warning: singular matrix:  check nodes 1 and 1


Trying gmin =   1.0000E-02 Note: One successful Gmin step
Trying gmin =   1.0000E-03 Note: One successful Gmin step
Trying gmin =   1.0000E-04 Note: One successful Gmin step
Trying gmin =   1.0000E-05 Note: One successful Gmin step
Trying gmin =   1.0000E-06 Note: One successful Gmin step
Trying gmin =   1.0000E-07 Note: One successful Gmin step
Trying gmin =   1.0000E-08 Note: One successful Gmin step
Trying gmin =   1.0000E-09 Note: One successful Gmin step
Trying gmin =   1.0000E-10 Note: One successful Gmin step
Trying gmin =   1.0000E-11 Note: One successful Gmin step
Trying gmin =   1.0000E-12 Note: One successful Gmin step
Note: One successful source step
Supplies reduced to   0.1000% Warning: singular matrix:  check nodes 1 and 1

Supplies reduced to   0.0000% Warning: singular matrix:  check nodes 1 and 1

Warning: source stepping failed
doAnalyses: iteration limit reached

run simulation(s) aborted
Syntax error: expression not understood 'v(5)-v(+9v) v(3)-v(2) v(5)-v(4) 
v(+9v) v(1) v(2) v(3) v(4) v(5)'.

There is nada on google about any of this - but I suspect it is missing 
model files or something, and before I go attaching to yet another 
mailing list, I thought I'd run it by here first as I'm sure there are 
some who use this and have experience with it on FreeBSD 9.

TIA guys



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