Re: @above in analyses other than tran and dc sweep

Geoffrey.Coram wrote:

> Verilog-AMS doesn't provide a way to access ac quantities:
> frequency, the ac current/voltage, etc.  So, I'm not sure
> what expression you imagine could cross zero.
>
> Some simulators do allow you to do a single-frequency ac
> analysis with a swept operating point; I would expect that
> to be treated like a dc sweep for the purposes of @above.


Hi

For the record, I don't think that @above should fire in AC, unless it's 
like a dc sweep as you say.

Eldo/Questa ADMS has a non-standard $realfreq which could be abused to 
produce such an expression. Since such an abuse would violate the stable 
operating point invariate, then it's a somewhat moot as whether it 
should cause @above to fire.

Regards
Paul Floyd
-- 
Dr Paul Floyd
Mentor Graphics Corporation


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