[sv-bc] RE: functional if statement

Yes, sorry, a typo on my part.

After correction, are the two equivalent?

 

Thanks,

Kapil

________________________________

From: Bresticker, Shalom [mailto:shalom.bresticker@intel.com] 
Sent: Tuesday, December 09, 2008 4:45 PM
To: Kapil Kaushik; sv-ac@server.eda.org; sv-bc@server.eda.org;
sv-ec@server.eda.org
Cc: Satyakam Sudershan
Subject: RE: functional if statement

 

I don't see the connection between this and standards work, but I'll
answer anyway.

What you probably want is

dout <= enable ? din : dout;

 

Shalom

	 

	
________________________________


	From: owner-sv-bc@server.eda.org
[mailto:owner-sv-bc@server.eda.org] On Behalf Of Kapil Kaushik
	Sent: Tuesday, December 09, 2008 1:05 PM
	To: sv-ac@server.eda.org; sv-bc@server.eda.org;
sv-ec@server.eda.org
	Cc: Satyakam Sudershan
	Subject: [sv-bc] functional if statement

	Hi,

	 

	I have the following piece of rtl:

	 

	always @(posedge ck54 or negedge p_rst_x) begin

	    if (~p_rst_x) 

	      dout <= 3'd0;     

	    else 

	      dout <= func( enable, din);

	      // if (enable)      // Works fine

	        // dout = din;   // Works fine

	      end

	      

	      function    func; 

	  input     enable;     

	  input din;

	  reg temp; 

	 

	    begin

	      if (enable) 

	        temp = din;

	      func = temp;            // Latch inferred

	 

	    end

	  endfunction

	 

	Given the above description, can I replace the command "dout <=
func(enable,din)" by "dout <= enable ? din : 1'bx"?

	Kindly suggest.

	 

	Thanks,

	Kapil

	
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