[sv-bc] RE: [sv-ec] Is modport variable allowed to be declared later?

Surya,

>It seems to me, the names should be previously declared before usage of
modport. 

Why?

-- Brad

-----Original Message-----
From: owner-sv-ec@eda.org [mailto:owner-sv-ec@eda.org] On Behalf Of
Surya Pratik Saha
Sent: Monday, January 28, 2008 4:16 AM
To: sv-ec@eda.org; sv-bc@eda.org
Subject: [sv-ec] Is modport variable allowed to be declared later?

Hi,
As per LRM (section 20.4 Modports)
*All of the names used in a modport declaration shall be declared by the
same interface as the modport itself. In particular, the names used
shall not be those declared by another enclosing interface, and a
modport dec-laration shall not implicitly declare new ports.

*It seems to me, the names should be previously declared before usage of
modport. With that consideration, following case should fail:
interface intf ;
    modport master (
      input cl
     );

    int cl = 1;
endinterface

module mod;
    intf fg();
    mod1 md1(fg.master);
        int x;
    initial
        begin
            x = fg.cl;
        end
endmodule

module mod1(intf.master ms);
    int x;
    initial
        x = ms.cl;
endmodule


Note 'cl' is declared later after modport declaration 'master'. But some
simulators are passing the case.

--
Regards
Surya





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