[sv-bc] Re: [sv-ac] mantis 1550

-----Non-member submission by John Havlicek-----
Sent: Friday, November 03, 2006 11:35 AM

Hi Jonathan:

The usage you describe aligns with the intuition that I mentioned in an
earlier mail to Dave Rich.

I also suggested in an earlier mail to Ed Cerny that we might need to
ask for SV-BC help on this.

I've copied SV-EC and SV-BC.

Thanks,

John H.

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> Note that users of clocking blocks already expect to be able to detect

> change events on an input clockvar.
> This is very, very similar to the detection of events on $past() or 
> $sampled().
> 
> I have not been following this discussion as closely as I should, and 
> I don't have much expertise to contribute to sv-ac, but I would urge 
> you all to share this issue with sv-ec and sv-bc.  I accept that it 
> raises some tricky problems, but I think users will be mightily 
> confused to find they can't detect changes on the result of $sampled()

> or $past(), where the user was expecting to get a deglitched and 
> possibly delayed version of a signal and wanted to use changes on that

> conditioned signal to trigger downstream activity.
> --
> Jonathan Bromley, Consultant
> 
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