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Date: | Thu, 15 Nov 2012 19:12:30 -0800 |
Subject: | Re: [geda-help] New user help with gEDA- gschem, ngspice, and |
opamps | |
From: | keitho AT strucktower DOT com |
To: | geda-help AT delorie DOT com |
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> > On Nov 15, 2012, at 2:29 PM, keitho AT strucktower DOT com wrote: > >> I see that gnetlist has designated my opamp with a "U" instead of an >> "X", >> not sure what that suggests. > > That's why it doesn't work. You need to start the refdes of a device > modeled by a subcircuit with "X". > Hi John- Thanks for responding. I went back into gschem and edited the refdes to now read "X8" instead of "U8". But now I get this error: ******** Circuit: * gnetlist -g spice-sdb --nomunge -i -o test1.net test1.sch Original line no.: 0, new internal line no.: 114: Undefined number [B__1] Original line no.: 0, new internal line no.: 114: Expression err: b__1) Original line no.: 0, new internal line no.: 114: Cannot compute substitute Original line no.: 0, new internal line no.: 115: Undefined number [B__1] Original line no.: 0, new internal line no.: 115: Expression err: b__1) Original line no.: 0, new internal line no.: 115: Cannot compute substitute Copies=124 Evals=75 Placeholders=4 Symbols=5 Errors=6 Numparam expansion errors: Run Spice anyway? y/n ? n ERROR: fatal error in ngspice, exit(1) keith AT t520:~/gaf$ ***** Is this due to an error in the subckt? Or something about the way I have configured it? I wonder- there is one line in the TI datasheet which I wasn't sure how to interpret. It looks like a line which was wrapped around but not designated as a continuation. Here's the subckt from the datasheet: http://www.strucktower.com/tlv274in_Page16.jpg I've marked what I interpret as one line in my tlv27x.inc. The only other thing I can think of is... someone (and the manual) mentioned I would need to have the "--enable-xspice" function compiled in order to use these older models which use the "poly" statement. Since I got this from the Debian repository I don't know if that was done or not. Ideas? Thanks so much, Keith
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