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Date: Fri, 16 Nov 2012 05:54:11 -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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Hi John-

Thanks again.

I do get "codemodel: too few args." So I assume the problem is not due to 
how my version of ngspice is compiled.

Other ideas?

Keith


>
> On Nov 15, 2012, at 8:12 PM, keitho AT strucktower DOT com wrote:
>
>>>
>>> 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.
>
> I believe you are correct.
>
>>
>> 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.
>
> That is true.
>
>> Since I
>> got this from the Debian repository I don't know if that was done or
>> not.
>
> You can tell by typing "codemodel" at the interactive ngspice prompt. This
> is an XSPICE command. If XSPICE is enabled, you get "codemodel: too few
> args.", but if not you get "codemodel: no such command available in
> ngspice".
>
> John Doty              Noqsi Aerospace, Ltd.
> http://www.noqsi.com/
> jpd AT noqsi DOT com
>
>
>
>