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Forums > Functional Verification > SystemVerilog

Subject: Mailbox inside initial blocks
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sundar_80
Posts: 20
Online: User is Offline
7/31/2007 12:46 AM  
Hello All,
         Do the below code is legal? becuase i was in the assumption that the below code will work, but when we tried the same code with NCSIM6.1 version it gave an error and the error was mailbox should not be declared inside initial block.

<BR>   program test();<BR>      initial<BR>        begin<BR>            mailbox mbx; // <STRONG>mailbox inside initial block not supported by ncsim<BR></STRONG>            mbx = new();<BR>        end<BR>


Sundar
stephenh
Posts: 77
Online: User is Offline
7/31/2007 4:38 AM  
Hi Sundar.

Is your example representative of the real use model?
If you really are trying to declare the mailbox at the top of an initial block, then why not put it into the program itself?
Putting it into the initial doesn't really give you any benefit, so far as I can see...

As for whether it's legal, I don't see any obvious reason why not, but I also don't see why you'd put a mailbox there anyway.
Steve H.
ajeetha
Posts: 97
Online: User is Offline
7/31/2007 6:41 AM  
Adding to what Steve has said, since your initial block is unnamed, you can't even use Hierarchical access to refer to the Mailbox from outside the initial block - who will be the receiving party of this mailbox then?

Ajeetha, CVC
www.noveldv.com
tpylant
Posts: 87
Online: User is Offline
8/03/2007 8:40 AM  
If you move the mailbox declaration out of the initial block, it compiles correctly:

program test();

mailbox mbx;

initial begin
mbx = new();
end

endprogram
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Forums > Functional Verification > SystemVerilog > Mailbox inside initial blocks


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