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/* $Id: fasm_fifo.v,v 1.2 2008/06/05 21:07:13 sybreon Exp $

**

** FASM MEMORY LIBRARY

** Copyright (C) 2004-2008 Shawn Tan <shawn.tan@aeste.net>

** All rights reserved.

**

** FASM is free software: you can redistribute it and/or modify it

** under the terms of the GNU Lesser General Public License as

** published by the Free Software Foundation, either version 3 of the

** License, or (at your option) any later version.

**

** FASM 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 Lesser General

** Public License for more details.

**

** You should have received a copy of the GNU Lesser General Public

** License along with FASM. If not, see <http:**www.gnu.org/licenses/>.

*/

module fasm_stack (/*AUTOARG*/

   // Outputs

   dat_o, rok_o, wok_o,

   // Inputs

   dat_i, rde_i, wre_i, rst_i, ena_i, clk_i

   );

   parameter AW = 4;

   parameter DW = 32;

   output [DW-1:0] dat_o;

   output          rok_o,

                   wok_o;

   input [DW-1:0]  dat_i;

   input           rde_i,

                   wre_i;

   input           rst_i,

                   ena_i,

                   clk_i;

   /*AUTOREG*/

   // Beginning of automatic regs (for this module's undeclared outputs)

   reg                  rok_o;

   reg                  wok_o;

   // End of automatics

   reg [AW:1]           rRADR;

   wire [AW:1]          rWADR = (rde_i) ? rRADR - 1 : rRADR + 1;

   always @(posedge clk_i)

     if (rst_i) begin

        /*AUTORESET*/

        // Beginning of autoreset for uninitialized flops

        rRADR <= {(1+(AW)-(1)){1'b0}};

        // End of automatics

     end else if (ena_i) begin

        rRADR <= #1 rWADR;

     end

   /*

    fasm_tparam AUTO_TEMPLATE (

    .AW(AW),

    .DW(DW),

    .clk_i(clk_i),

    .rst_i(),

    .stb_i(),

    .wre_i(),

    .dat_i(),

    .adr_i(rRADR),

    .dat_o(dat_o),

    .xclk_i(clk_i),

    .xrst_i(),

    .xstb_i(),

    .xwre_i(wWRE),

    .xadr_i(rWADR),

    .xdat_i(dat_i),

    .xdat_o(),

    )

    */

   fasm_tparam

     #(/*AUTOINSTPARAM*/

       // Parameters

       .AW                              (AW),                    // Templated

       .DW                              (DW))                    // Templated

   stack0

     (/*AUTOINST*/

      // Outputs

      .dat_o                            (dat_o),                 // Templated

      .xdat_o                           (),                      // Templated

      // Inputs

      .dat_i                            (),                      // Templated

      .adr_i                            (rRADR),                 // Templated

      .wre_i                            (),                      // Templated

      .stb_i                            (),                      // Templated

      .rst_i                            (),                      // Templated

      .clk_i                            (clk_i),                 // Templated

      .xdat_i                           (dat_i),                 // Templated

      .xadr_i                           (rWADR),                 // Templated

      .xwre_i                           (wWRE),                  // Templated

      .xstb_i                           (),                      // Templated

      .xrst_i                           (),                      // Templated

      .xclk_i                           (clk_i));                // Templated

endmodule // fasm_stack

/*

 $Log$

 */