The action block is the explicit production that appears as part of the assert statement. I suggest changing: SystemVerilog provides eight system tasks to control execution of assertion action block for concurrent assertions: to SystemVerilog provides system tasks to control the pass and fail actions associated with concurrent assertions: > -----Original Message----- > From: Kulshrestha, Manisha > Sent: Wednesday, March 28, 2007 12:27 PM > To: Rich, Dave; 'Jonathan Bromley'; 'john.havlicek@freescale.com'; 'sv- > ac@server.eda-stds.org' > Subject: RE: [sv-ac] call to vote on Mantis 1361 > > Hi Dave, > > These functions do affect the implicit fail action. > > Manisha > > -----Original Message----- > From: owner-sv-ac@server.eda.org [mailto:owner-sv-ac@server.eda.org] On > Behalf Of Rich, Dave > Sent: Wednesday, March 28, 2007 9:45 AM > To: Jonathan Bromley; john.havlicek@freescale.com; sv-ac@server.eda- > stds.org > Subject: RE: [sv-ac] call to vote on Mantis 1361 > > > Another minor clarification is whether $assertfailon/off effects just the > explicit fail action, or also the implicit fail action of calling $error. > > Also, it is clear in this proposal that these tasks only control the > execution of the action blocks of concurrent assertions. Shouldn't the > same be true for section 22.8? > > > Dave > > > -----Original Message----- > > From: owner-sv-ac@server.eda.org [mailto:owner-sv-ac@server.eda.org] > On > > Behalf Of Jonathan Bromley > > Sent: Wednesday, March 28, 2007 3:20 AM > > To: john.havlicek@freescale.com; sv-ac@server.eda-stds.org > > Subject: RE: [sv-ac] call to vote on Mantis 1361 > > > > This is probably too late, but I only just caught up with my email > > backlog after being away... > > > > I think there is an ambiguity, or at least a lack of clarity, in the > > proposed new clause "22.9 Assertion action control system > tasks". > > Do the $assertpasson/$assertpassoff tasks enable/disable the action on > > nonvacuous pass, or both vacuous and nonvacuous passes? If they > > control all forms of pass action, how do they interact with > > $assertvacuouson/off? For example, if I do > > > > initial begin > > $assertpassoff; > > $assertvacuousoff; > > $assertpasson; > > end > > > > what will happen - is the $assertvacuousoff sticky, so that the later > > $assertpasson enables only non-vacuous successes? It might be > > preferable to express the effect in terms of three flags for each > > assertion, one flag to enable each action - fail, non-vacuous success, > > vacuous succes - and then describe the effect of the $assert... tasks > > on those flags. > > -- > > Jonathan Bromley, Consultant > > > > DOULOS - Developing Design Know-how > > VHDL * Verilog * SystemC * e * Perl * Tcl/Tk * Project Services > > > > Doulos Ltd. Church Hatch, 22 Market Place, Ringwood, Hampshire, BH24 > 1AW, > > UK > > Tel: +44 (0)1425 471223 Email: > > jonathan.bromley@doulos.com > > Fax: +44 (0)1425 471573 Web: > > http://www.doulos.com > > > > This e-mail and any attachments are confidential and Doulos Ltd. > > reserves > > all rights of privilege in respect thereof. It is intended for the > use of > > the addressee only. If you are not the intended recipient please > delete it > > from your system, any use, disclosure, or copying of this > document is > > unauthorised. The contents of this message may contain personal views > > which are not the views of Doulos Ltd., unless specifically stated. > > > > -- > > This message has been scanned for viruses and dangerous content by > > MailScanner, and is believed to be clean. > > > > > -- > This message has been scanned for viruses and > dangerous content by MailScanner, and is > believed to be clean. > -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.Received on Wed Mar 28 12:52:13 2007
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