RE: [sv-ec] FW: [sv-bc] Interface name in virtual interface declaration

19.3 says, "The following items are visible in all compilation units:
modules, macromodules, primitives, programs, interfaces, and packages."

Shalom

> -----Original Message-----
> From: owner-sv-ec@server.eda.org [mailto:owner-sv-ec@server.eda.org]
> On Behalf Of Brad Pierce
> Sent: Friday, April 20, 2007 1:11 AM
> To: sv-ec@server.eda-stds.org
> Cc: Surya Pratik Saha; Maidment, Matthew R
> Subject: RE: [sv-ec] FW: [sv-bc] Interface name in virtual interface
> declaration
> 
> The BNF in no way implies that "the interface identifier used in
> virtual
> interface declaration has to be ... declared before the use inside
> virtual interface declaration".
> 
> Instead the BNF allows you to infer that a nonkeyword identifier
> immediately
> following
> 
>     virtual [interface]
> 
> must be the name of an interface.  If you later learned that the
> identifier
> is not actually the name of an interface, then that would be an error
> according
> to the BNF.
> 
> -- Brad
> 
> 
> -----Original Message-----
> From: Rich, Dave [mailto:Dave_Rich@mentor.com]
> Sent: Thursday, April 19, 2007 2:49 PM
> To: Brad Pierce; sv-ec@eda-stds.org
> Cc: Surya Pratik Saha; Matthew.R.Maidment
> Subject: RE: [sv-ec] FW: [sv-bc] Interface name in virtual interface
> declaration
> 
> I don't think the LRM requires interface identifiers to be defined
> before referenced. There is certainly no requirement that a module or
> interface identifier be declared before it is instantiated.
> 
> You will get an error at elaboration if you actually try to use the
> virtual interface 'ij'. You won't see a compile time error here
> because
> there could eventually be an interface called 'b' with a modport
> called
> 't'.
> 
> Dave
> 
> 
> 
> > -----Original Message-----
> > From: owner-sv-ec@server.eda.org [mailto:owner-sv-ec@server.eda.org]
> On
> > Behalf Of Brad Pierce
> > Sent: Wednesday, April 18, 2007 10:11 PM
> > To: sv-ec@server.eda-stds.org
> > Cc: Surya Pratik Saha; Matthew.R.Maidment
> > Subject: [sv-ec] FW: [sv-bc] Interface name in virtual interface
> > declaration
> >
> >
> >
> > -----Original Message-----
> > From: owner-sv-bc@eda.org [mailto:owner-sv-bc@eda.org] On Behalf Of
> > Surya Pratik Saha
> > Sent: Wednesday, April 18, 2007 5:10 AM
> > To: sv-bc@eda-stds.org
> > Subject: [sv-bc] Interface name in virtual interface declaration
> >
> > Hi,
> > As per LRM, the BNF of virtual interface declaration is:
> >
> > *virtual_interface_declaration ::= virtual [ interface ]
> > interface_identifier list_of_virtual_interface_decl ;
> >
> > list_of_virtual_interface_decl ::= variable_identifier [ =
> > interface_instance_identifier ] { , variable_identifier [ =
> > interface_instance_identifier ] }
> >
> > data_declaration ::= ... | virtual_interface_declaration
> >
> > data_type ::= ... | virtual [ interface ] interface_identifier
> >
> > *So, as per BNF, the interface identifier used in virtual interface
> > declaration has to be visible, i.e. the interface has to be declared
> > before the use inside virtual interface declaration. But MTI-Vlog is
> > treating it as hierarchical reference of interface identifier or
> > interface instance identifier. So following case:
> >
> > *module m;
> > virtual interface b.t ij;
> > bot b();
> > endmodule
> > interface int_ii;
> > endinterface
> >
> > module bot;
> >     int_ii t();
> > endmodule*
> >
> > is passed by MTI, wheras this is against the LRM. Please let me know
> > your comments.
> >
> > --
> > Regards
> > Surya
> >
> >
> >
> >
> >
> > --
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