RE: Are array parameters in functions allowed?

That is a vector, not an array.

Shalom

> -----Original Message-----
> From: owner-verilog-ams@server.eda.org [mailto:owner-verilog-
> ams@server.eda.org] On Behalf Of Muranyi, Arpad
> Sent: Thursday, June 14, 2007 5:57 PM
> To: Verilog-AMS LRM Committee
> Subject: RE: Are array parameters in functions allowed?
> 
> Shalom,
> 
> Are you sure about that?  The example I see in
> 1364-2005 Section 10.4.3 seems to sow an array
> input parameter:
> 
> 
> function [7:0] getbyte;
> input [15:0] address;
> begin
> // code to extract low-order byte from addressed word
> . . .
> getbyte = result_expression;
> end
> endfunction
> 
> 
> Or did I misunderstand that example?
> 
> Thanks,
> 
> Arpad
> =================================================
> 
> -----Original Message-----
> From: Bresticker, Shalom
> Sent: Thursday, June 14, 2007 6:39 AM
> To: David Miller; Muranyi, Arpad
> Cc: Verilog-AMS LRM Committee
> Subject: RE: Are array parameters in functions allowed?
> 
> In digital, they are not allowed in Verilog (1364), but they are
> allowed
> in SystemVerilog (1800).
> 
> Shalom
> 
> > -----Original Message-----
> > From: owner-verilog-ams@server.eda.org [mailto:owner-verilog-
> > ams@server.eda.org] On Behalf Of David Miller
> > Sent: Wednesday, June 13, 2007 9:08 PM
> > To: Muranyi, Arpad
> > Cc: Verilog-AMS LRM Committee
> > Subject: Re: Are array parameters in functions allowed?
> >
> > Muranyi, Arpad wrote:
> > > Hello everyone,
> > >
> > > Sorry for bringing this questions to this forum, but
> > > the information in the v2.2 LRM doesn't answer my
> > > question.
> > >
> > > I wonder whether arrays are allowed as parameters to
> > > analog (or digital) functions.  Section 4.6 doesn't
> > > give enough detail on the "function_item_declaration"
> > > to answer this question, and I am getting an error
> > > message from my favorite simulator when I do this:
> > >
> > >   analog function integer FindCursorIndex;
> > >     input Wfm[1:100];
> > >     ...
> > >     ...
> > >     ...
> > >
> > > Error: Illegal array parameter 'Wfm' in function 'FindCursorIndex'
> > >
> > > Thanks,
> > >
> > > Arpad
> > > ======================================================
> > >
> > >
> > Hi Arpad,
> >
> > Yes array parameters are allowed as the arguments to an analog udf.
> > In the latest version of the LRM currently under review, this has
> been
> > clarified with regards to the syntax. Also array parameters were
> valid
> > in LRM 2.2, when we introduced the output, inout direction
> > declarations.
> >
> > So you should be able to have:
> >
> > analog function integer FindCursorIndex;
> >     input [1:100]Wfm;
> >     integer Wfm[1:100];
> >
> > .....
> > parmaeter integer P[1:100] = {.......};
> >
> > analog begin
> >     ... = FindCursorIndex(P);
> >
> >
> > Take care where the range is specified, I think, since Wfm is a
> 'port'
> > the range (width) is on the left, and then when you declare the
> local
> > integer variable, it is an array so the range is on the right. At
> > least
> > this is the case for Analog.
> >
> > Cheers....
> > Dave
> 
> --
> 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.