Subversion Repositories sparc64soc

// ========== Copyright Header Begin ==========================================

// 

// OpenSPARC T1 Processor File: sparc_tlu_penc64.v

// Copyright (c) 2006 Sun Microsystems, Inc.  All Rights Reserved.

// DO NOT ALTER OR REMOVE COPYRIGHT NOTICES.

// 

// The above named program is free software; you can redistribute it and/or

// modify it under the terms of the GNU General Public

// License version 2 as published by the Free Software Foundation.

// 

// The above named program is distributed in the hope that it will be 

// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

// General Public License for more details.

// 

// You should have received a copy of the GNU General Public

// License along with this work; if not, write to the Free Software

// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.

// 

// ========== Copyright Header End ============================================

////////////////////////////////////////////////////////////////////////

/*

//  Module Name: sparc_tlu_penc64

//  Description:

//    64 -> 6 priority encoder

//    Bit 63 has the highest priority

//

*/

module sparc_tlu_penc64 (/*AUTOARG*/

   // Outputs

   out,

   // Inputs

   in

   );

   input [63:0] in;

   output [5:0] out;

   reg [5:0]     out;

   integer      i;

always @ (in)

begin

//

// code modified for verplex to avoid inferred latches

//           if (in == 64'b0) // don't want a latch

        out = 6'b0;

//      else 

        for (i=0;i<64;i=i+1)

            begin

               if (in[i])

                   out[5:0] = i[5:0];

            end

end

endmodule // sparc_tlu_penc64