[sv-bc] RE: [sv-ec] Dynamic type parameter array

I think this was an oversight in the BNF. It should be legal.

 

________________________________

From: owner-sv-ec@server.eda.org [mailto:owner-sv-ec@server.eda.org] On
Behalf Of Surya Pratik Saha
Sent: Friday, August 01, 2008 1:58 AM
To: sv-ec@server.eda.org; sv-bc@server.eda.org
Subject: [sv-ec] Dynamic type parameter array

 

Hi,
As per 1800 2005 SV LRM BNF, parameter array rule is defined as:

param_assignment ::= parameter_identifier { unpacked_dimension } =
constant_param_expression
unpacked_dimension ::= [ constant_range ] 
| [ constant_expression ]

So, by BNF parameter can't be declared with dynamic type (associative or
queue or dynamic). But can we declare dynamic type parameter array by
using typedef. Is the e.g. legal:

module top;
    typedef int myassoc[*];
    parameter int myparam1[*] = '{default:1}; // illegal
    parameter myassoc myparam2 = '{default:1}; // Is it legal
endmodule

If 2nd declaration is legal then why BNF restricts the 1st declaration.



-- 
Regards
Surya

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