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Re: [Help-gnucap] Digital mode simulation


From: al davis
Subject: Re: [Help-gnucap] Digital mode simulation
Date: Thu, 3 Aug 2006 01:43:01 -0400
User-agent: KMail/1.9.3

On Wednesday 02 August 2006 17:30, Jose Roberto B. de A. 
Monteiro wrote:
> .print dc V(V2) V(V3) VO(U1) VO(U2)
> .dc V2 0 10 1 >nor-test.dat
> .END
> 
> 
> But I not got the following result:
> 
> #           V(V2)      V(V3)      VO(U1)     VO(U2)
>  0.         0.         10.        ??         ??
>  1.         1.         10.        ??         ??

> Is there something that I am doing wrong? Maybe a missing 
LOGIC model
> parameter, etc.
> 

VO is not a valid probe on a U device.  The only valid probes 
are the same as the ones for the output node.  (V, Logic, etc.)

Since it cannot always be determined when you ask for a probe 
whether it is valid or not, it accepts anything, but prints ?? 
as the value for an invalid probe.


Also ....  you rarely need to specify "mode=digital".  The 
simulator should be able to select the mode automatically.





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