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// default SYN_KEEP definition
///////////////////////////////////////
// dependencies
///////////////////////////////////////
// size to width
//////////////////////////////////////////////////////////////////////
////                                                              ////
////  Versatile library, clock and reset                          ////
////                                                              ////
////  Description                                                 ////
////  Logic related to clock and reset                            ////
////                                                              ////
////                                                              ////
////  To Do:                                                      ////
////   - add more different registers                             ////
////                                                              ////
////  Author(s):                                                  ////
////      - Michael Unneback, unneback@opencores.org              ////
////        ORSoC AB                                              ////
////                                                              ////
//////////////////////////////////////////////////////////////////////
////                                                              ////
//// Copyright (C) 2010 Authors and OPENCORES.ORG                 ////
////                                                              ////
//// This source file may be used and distributed without         ////
//// restriction provided that this copyright statement is not    ////
//// removed from the file and that any derivative work contains  ////
//// the original copyright notice and the associated disclaimer. ////
////                                                              ////
//// This source file 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 2.1 of the License, or (at your option) any   ////
//// later version.                                               ////
////                                                              ////
//// This source 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 this source; if not, download it   ////
//// from http://www.opencores.org/lgpl.shtml                     ////
////                                                              ////
//////////////////////////////////////////////////////////////////////
//altera
module vl_gbuf ( i, o);
input i;
output o;
assign o = i;
endmodule
 // ALTERA
 //ACTEL
// sync reset
// input active lo async reset, normally from external reset generator and/or switch
// output active high global reset sync with two DFFs 
`timescale 1 ns/100 ps
module vl_sync_rst ( rst_n_i, rst_o, clk);
input rst_n_i, clk;
output rst_o;
reg [1:0] tmp;
always @ (posedge clk or negedge rst_n_i)
if (!rst_n_i)
        tmp <= 2'b11;
else
        tmp <= {1'b0,tmp[1]};
vl_gbuf buf_i0( .i(tmp[0]), .o(rst_o));
endmodule
// vl_pll
///////////////////////////////////////////////////////////////////////////////
`timescale 1 ps/1 ps
module vl_pll ( clk_i, rst_n_i, lock, clk_o, rst_o);
parameter index = 0;
parameter number_of_clk = 1;
parameter period_time_0 = 20000;
parameter period_time_1 = 20000;
parameter period_time_2 = 20000;
parameter period_time_3 = 20000;
parameter period_time_4 = 20000;
parameter lock_delay = 2000000;
input clk_i, rst_n_i;
output lock;
output reg [0:number_of_clk-1] clk_o;
output [0:number_of_clk-1] rst_o;
`ifdef SIM_PLL
always
     #((period_time_0)/2) clk_o[0] <=  (!rst_n_i) ? 0 : ~clk_o[0];
generate if (number_of_clk > 1)
always
     #((period_time_1)/2) clk_o[1] <=  (!rst_n_i) ? 0 : ~clk_o[1];
endgenerate
generate if (number_of_clk > 2)
always
     #((period_time_2)/2) clk_o[2] <=  (!rst_n_i) ? 0 : ~clk_o[2];
endgenerate
generate if (number_of_clk > 3)
always
     #((period_time_3)/2) clk_o[3] <=  (!rst_n_i) ? 0 : ~clk_o[3];
endgenerate
generate if (number_of_clk > 4)
always
     #((period_time_4)/2) clk_o[4] <=  (!rst_n_i) ? 0 : ~clk_o[4];
endgenerate
genvar i;
generate for (i=0;i<number_of_clk;i=i+1) begin: clock
     vl_sync_rst rst_i0 ( .rst_n_i(rst_n_i | lock), .rst_o(rst_o[i]), .clk(clk_o[i]));
end
endgenerate
//assign #lock_delay lock = rst_n_i;
assign lock = rst_n_i;
endmodule
`else
`ifdef VL_PLL0
`ifdef VL_PLL0_CLK1
    pll0 pll0_i0 (.areset(rst_n_i), .inclk0(clk_i), .locked(lock), .c0(clk_o[0]));
`endif
`ifdef VL_PLL0_CLK2
    pll0 pll0_i0 (.areset(rst_n_i), .inclk0(clk_i), .locked(lock), .c0(clk_o[0]), .c1(clk_o[1]));
`endif
`ifdef VL_PLL0_CLK3
    pll0 pll0_i0 (.areset(rst_n_i), .inclk0(clk_i), .locked(lock), .c0(clk_o[0]), .c1(clk_o[1]), .c2(clk_o[2]));
`endif
`ifdef VL_PLL0_CLK4
    pll0 pll0_i0 (.areset(rst_n_i), .inclk0(clk_i), .locked(lock), .c0(clk_o[0]), .c1(clk_o[1]), .c2(clk_o[2]), .c3(clk_o[3]));
`endif
`ifdef VL_PLL0_CLK5
    pll0 pll0_i0 (.areset(rst_n_i), .inclk0(clk_i), .locked(lock), .c0(clk_o[0]), .c1(clk_o[1]), .c2(clk_o[2]), .c3(clk_o[3]), .c4(clk_o[4]));
`endif
`endif
`ifdef VL_PLL1
`ifdef VL_PLL1_CLK1
    pll1 pll1_i0 (.areset(rst_n_i), .inclk0(clk_i), .locked(lock), .c0(clk_o[0]));
`endif
`ifdef VL_PLL1_CLK2
    pll1 pll1_i0 (.areset(rst_n_i), .inclk0(clk_i), .locked(lock), .c0(clk_o[0]), .c1(clk_o[1]));
`endif
`ifdef VL_PLL1_CLK3
    pll1 pll1_i0 (.areset(rst_n_i), .inclk0(clk_i), .locked(lock), .c0(clk_o[0]), .c1(clk_o[1]), .c2(clk_o[2]));
`endif
`ifdef VL_PLL1_CLK4
    pll1 pll1_i0 (.areset(rst_n_i), .inclk0(clk_i), .locked(lock), .c0(clk_o[0]), .c1(clk_o[1]), .c2(clk_o[2]), .c3(clk_o[3]));
`endif
`ifdef VL_PLL1_CLK5
    pll1 pll1_i0 (.areset(rst_n_i), .inclk0(clk_i), .locked(lock), .c0(clk_o[0]), .c1(clk_o[1]), .c2(clk_o[2]), .c3(clk_o[3]), .c4(clk_o[4]));
`endif
`endif
`ifdef VL_PLL2
`ifdef VL_PLL2_CLK1
    pll2 pll2_i0 (.areset(rst_n_i), .inclk0(clk_i), .locked(lock), .c0(clk_o[0]));
`endif
`ifdef VL_PLL2_CLK2
    pll2 pll2_i0 (.areset(rst_n_i), .inclk0(clk_i), .locked(lock), .c0(clk_o[0]), .c1(clk_o[1]));
`endif
`ifdef VL_PLL2_CLK3
    pll2 pll2_i0 (.areset(rst_n_i), .inclk0(clk_i), .locked(lock), .c0(clk_o[0]), .c1(clk_o[1]), .c2(clk_o[2]));
`endif
`ifdef VL_PLL2_CLK4
    pll2 pll2_i0 (.areset(rst_n_i), .inclk0(clk_i), .locked(lock), .c0(clk_o[0]), .c1(clk_o[1]), .c2(clk_o[2]), .c3(clk_o[3]));
`endif
`ifdef VL_PLL2_CLK5
    pll2 pll2_i0 (.areset(rst_n_i), .inclk0(clk_i), .locked(lock), .c0(clk_o[0]), .c1(clk_o[1]), .c2(clk_o[2]), .c3(clk_o[3]), .c4(clk_o[4]));
`endif
`endif
`ifdef VL_PLL3
`ifdef VL_PLL3_CLK1
    pll3 pll3_i0 (.areset(rst_n_i), .inclk0(clk_i), .locked(lock), .c0(clk_o[0]));
`endif
`ifdef VL_PLL3_CLK2
    pll3 pll3_i0 (.areset(rst_n_i), .inclk0(clk_i), .locked(lock), .c0(clk_o[0]), .c1(clk_o[1]));
`endif
`ifdef VL_PLL3_CLK3
    pll3 pll3_i0 (.areset(rst_n_i), .inclk0(clk_i), .locked(lock), .c0(clk_o[0]), .c1(clk_o[1]), .c2(clk_o[2]));
`endif
`ifdef VL_PLL3_CLK4
    pll3 pll3_i0 (.areset(rst_n_i), .inclk0(clk_i), .locked(lock), .c0(clk_o[0]), .c1(clk_o[1]), .c2(clk_o[2]), .c3(clk_o[3]));
`endif
`ifdef VL_PLL3_CLK5
    pll3 pll3_i0 (.areset(rst_n_i), .inclk0(clk_i), .locked(lock), .c0(clk_o[0]), .c1(clk_o[1]), .c2(clk_o[2]), .c3(clk_o[3]), .c4(clk_o[4]));
`endif
`endif
genvar i;
generate for (i=0;i<number_of_clk;i=i+1) begin: clock
        vl_sync_rst rst_i0 ( .rst_n_i(rst_n_i | lock), .rst_o(rst_o[i]), .clk(clk_o[i]));
end
endgenerate
endmodule
`endif
///////////////////////////////////////////////////////////////////////////////
 //altera
 //actel
//////////////////////////////////////////////////////////////////////
////                                                              ////
////  Versatile library, registers                                ////
////                                                              ////
////  Description                                                 ////
////  Different type of registers                                 ////
////                                                              ////
////                                                              ////
////  To Do:                                                      ////
////   - add more different registers                             ////
////                                                              ////
////  Author(s):                                                  ////
////      - Michael Unneback, unneback@opencores.org              ////
////        ORSoC AB                                              ////
////                                                              ////
//////////////////////////////////////////////////////////////////////
////                                                              ////
//// Copyright (C) 2010 Authors and OPENCORES.ORG                 ////
////                                                              ////
//// This source file may be used and distributed without         ////
//// restriction provided that this copyright statement is not    ////
//// removed from the file and that any derivative work contains  ////
//// the original copyright notice and the associated disclaimer. ////
////                                                              ////
//// This source file 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 2.1 of the License, or (at your option) any   ////
//// later version.                                               ////
////                                                              ////
//// This source 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 this source; if not, download it   ////
//// from http://www.opencores.org/lgpl.shtml                     ////
////                                                              ////
//////////////////////////////////////////////////////////////////////
module vl_dff ( d, q, clk, rst);
        parameter width = 1;
        parameter reset_value = 0;
        input [width-1:0] d;
        input clk, rst;
        output reg [width-1:0] q;
        always @ (posedge clk or posedge rst)
        if (rst)
                q <= reset_value;
        else
                q <= d;
endmodule
module vl_dff_array ( d, q, clk, rst);
        parameter width = 1;
        parameter depth = 2;
        parameter reset_value = 1'b0;
        input [width-1:0] d;
        input clk, rst;
        output [width-1:0] q;
        reg  [0:depth-1] q_tmp [width-1:0];
        integer i;
        always @ (posedge clk or posedge rst)
        if (rst) begin
            for (i=0;i<depth;i=i+1)
                q_tmp[i] <= {width{reset_value}};
        end else begin
            q_tmp[0] <= d;
            for (i=1;i<depth;i=i+1)
                q_tmp[i] <= q_tmp[i-1];
        end
    assign q = q_tmp[depth-1];
endmodule
module vl_dff_ce ( d, ce, q, clk, rst);
        parameter width = 1;
        parameter reset_value = 0;
        input [width-1:0] d;
        input ce, clk, rst;
        output reg [width-1:0] q;
        always @ (posedge clk or posedge rst)
        if (rst)
                q <= reset_value;
        else
                if (ce)
                        q <= d;
endmodule
module vl_dff_ce_clear ( d, ce, clear, q, clk, rst);
        parameter width = 1;
        parameter reset_value = 0;
        input [width-1:0] d;
        input ce, clear, clk, rst;
        output reg [width-1:0] q;
        always @ (posedge clk or posedge rst)
        if (rst)
            q <= reset_value;
        else
            if (ce)
                if (clear)
                    q <= {width{1'b0}};
                else
                    q <= d;
endmodule
module vl_dff_ce_set ( d, ce, set, q, clk, rst);
        parameter width = 1;
        parameter reset_value = 0;
        input [width-1:0] d;
        input ce, set, clk, rst;
        output reg [width-1:0] q;
        always @ (posedge clk or posedge rst)
        if (rst)
            q <= reset_value;
        else
            if (ce)
                if (set)
                    q <= {width{1'b1}};
                else
                    q <= d;
endmodule
module vl_spr ( sp, r, q, clk, rst);
        //parameter width = 1;
        parameter reset_value = 1'b0;
        input sp, r;
        output reg q;
        input clk, rst;
        always @ (posedge clk or posedge rst)
        if (rst)
            q <= reset_value;
        else
            if (sp)
                q <= 1'b1;
            else if (r)
                q <= 1'b0;
endmodule
module vl_srp ( s, rp, q, clk, rst);
        parameter width = 1;
        parameter reset_value = 0;
        input s, rp;
        output reg q;
        input clk, rst;
        always @ (posedge clk or posedge rst)
        if (rst)
            q <= reset_value;
        else
            if (rp)
                q <= 1'b0;
            else if (s)
                q <= 1'b1;
endmodule
// megafunction wizard: %LPM_FF%
// GENERATION: STANDARD
// VERSION: WM1.0
// MODULE: lpm_ff 
// ============================================================
// File Name: dff_sr.v
// Megafunction Name(s):
//                      lpm_ff
//
// Simulation Library Files(s):
//                      lpm
// ============================================================
// ************************************************************
// THIS IS A WIZARD-GENERATED FILE. DO NOT EDIT THIS FILE!
//
// 9.1 Build 304 01/25/2010 SP 1 SJ Full Version
// ************************************************************
//Copyright (C) 1991-2010 Altera Corporation
//Your use of Altera Corporation's design tools, logic functions 
//and other software and tools, and its AMPP partner logic 
//functions, and any output files from any of the foregoing 
//(including device programming or simulation files), and any 
//associated documentation or information are expressly subject 
//to the terms and conditions of the Altera Program License 
//Subscription Agreement, Altera MegaCore Function License 
//Agreement, or other applicable license agreement, including, 
//without limitation, that your use is for the sole purpose of 
//programming logic devices manufactured by Altera and sold by 
//Altera or its authorized distributors.  Please refer to the 
//applicable agreement for further details.
// synopsys translate_off
`timescale 1 ps / 1 ps
// synopsys translate_on
module vl_dff_sr (
        aclr,
        aset,
        clock,
        data,
        q);
        input     aclr;
        input     aset;
        input     clock;
        input     data;
        output    q;
        wire [0:0] sub_wire0;
        wire [0:0] sub_wire1 = sub_wire0[0:0];
        wire  q = sub_wire1;
        wire  sub_wire2 = data;
        wire  sub_wire3 = sub_wire2;
        lpm_ff  lpm_ff_component (
                                .aclr (aclr),
                                .clock (clock),
                                .data (sub_wire3),
                                .aset (aset),
                                .q (sub_wire0)
                                // synopsys translate_off
                                ,
                                .aload (),
                                .enable (),
                                .sclr (),
                                .sload (),
                                .sset ()
                                // synopsys translate_on
                                );
        defparam
                lpm_ff_component.lpm_fftype = "DFF",
                lpm_ff_component.lpm_type = "LPM_FF",
                lpm_ff_component.lpm_width = 1;
endmodule
// ============================================================
// CNX file retrieval info
// ============================================================
// Retrieval info: PRIVATE: ACLR NUMERIC "1"
// Retrieval info: PRIVATE: ALOAD NUMERIC "0"
// Retrieval info: PRIVATE: ASET NUMERIC "1"
// Retrieval info: PRIVATE: ASET_ALL1 NUMERIC "1"
// Retrieval info: PRIVATE: CLK_EN NUMERIC "0"
// Retrieval info: PRIVATE: DFF NUMERIC "1"
// Retrieval info: PRIVATE: INTENDED_DEVICE_FAMILY STRING "Cyclone IV E"
// Retrieval info: PRIVATE: SCLR NUMERIC "0"
// Retrieval info: PRIVATE: SLOAD NUMERIC "0"
// Retrieval info: PRIVATE: SSET NUMERIC "0"
// Retrieval info: PRIVATE: SSET_ALL1 NUMERIC "1"
// Retrieval info: PRIVATE: SYNTH_WRAPPER_GEN_POSTFIX STRING "0"
// Retrieval info: PRIVATE: UseTFFdataPort NUMERIC "0"
// Retrieval info: PRIVATE: nBit NUMERIC "1"
// Retrieval info: CONSTANT: LPM_FFTYPE STRING "DFF"
// Retrieval info: CONSTANT: LPM_TYPE STRING "LPM_FF"
// Retrieval info: CONSTANT: LPM_WIDTH NUMERIC "1"
// Retrieval info: USED_PORT: aclr 0 0 0 0 INPUT NODEFVAL aclr
// Retrieval info: USED_PORT: aset 0 0 0 0 INPUT NODEFVAL aset
// Retrieval info: USED_PORT: clock 0 0 0 0 INPUT NODEFVAL clock
// Retrieval info: USED_PORT: data 0 0 0 0 INPUT NODEFVAL data
// Retrieval info: USED_PORT: q 0 0 0 0 OUTPUT NODEFVAL q
// Retrieval info: CONNECT: @clock 0 0 0 0 clock 0 0 0 0
// Retrieval info: CONNECT: q 0 0 0 0 @q 0 0 1 0
// Retrieval info: CONNECT: @aclr 0 0 0 0 aclr 0 0 0 0
// Retrieval info: CONNECT: @aset 0 0 0 0 aset 0 0 0 0
// Retrieval info: CONNECT: @data 0 0 1 0 data 0 0 0 0
// Retrieval info: LIBRARY: lpm lpm.lpm_components.all
// Retrieval info: GEN_FILE: TYPE_NORMAL dff_sr.v TRUE
// Retrieval info: GEN_FILE: TYPE_NORMAL dff_sr.inc FALSE
// Retrieval info: GEN_FILE: TYPE_NORMAL dff_sr.cmp FALSE
// Retrieval info: GEN_FILE: TYPE_NORMAL dff_sr.bsf FALSE
// Retrieval info: GEN_FILE: TYPE_NORMAL dff_sr_inst.v FALSE
// Retrieval info: GEN_FILE: TYPE_NORMAL dff_sr_bb.v FALSE
// Retrieval info: LIB_FILE: lpm
// LATCH
// For targtes not supporting LATCH use dff_sr with clk=1 and data=1
module vl_latch ( d, le, q, clk);
input d, le;
output q;
input clk;
dff_sr i0 (.aclr(), .aset(), .clock(1'b1), .data(1'b1), .q(q));
endmodule
module vl_shreg ( d, q, clk, rst);
parameter depth = 10;
input d;
output q;
input clk, rst;
reg [1:depth] dffs;
always @ (posedge clk or posedge rst)
if (rst)
    dffs <= {depth{1'b0}};
else
    dffs <= {d,dffs[1:depth-1]};
assign q = dffs[depth];
endmodule
module vl_shreg_ce ( d, ce, q, clk, rst);
parameter depth = 10;
input d, ce;
output q;
input clk, rst;
reg [1:depth] dffs;
always @ (posedge clk or posedge rst)
if (rst)
    dffs <= {depth{1'b0}};
else
    if (ce)
        dffs <= {d,dffs[1:depth-1]};
assign q = dffs[depth];
endmodule
module vl_delay ( d, q, clk, rst);
parameter depth = 10;
input d;
output q;
input clk, rst;
reg [1:depth] dffs;
always @ (posedge clk or posedge rst)
if (rst)
    dffs <= {depth{1'b0}};
else
    dffs <= {d,dffs[1:depth-1]};
assign q = dffs[depth];
endmodule
module vl_delay_emptyflag ( d, q, emptyflag, clk, rst);
parameter depth = 10;
input d;
output q, emptyflag;
input clk, rst;
reg [1:depth] dffs;
always @ (posedge clk or posedge rst)
if (rst)
    dffs <= {depth{1'b0}};
else
    dffs <= {d,dffs[1:depth-1]};
assign q = dffs[depth];
assign emptyflag = !(|dffs);
endmodule
module vl_pulse2toggle ( pl, q, clk, rst);
input pl;
output reg q;
input clk, rst;
always @ (posedge clk or posedge rst)
if (rst)
    q <= 1'b0;
else
    q <= pl ^ q;
endmodule
module vl_toggle2pulse (d, pl, clk, rst);
input d;
output pl;
input clk, rst;
reg dff;
always @ (posedge clk or posedge rst)
if (rst)
    dff <= 1'b0;
else
    dff <= d;
assign pl = d ^ dff;
endmodule
module vl_synchronizer (d, q, clk, rst);
input d;
output reg q;
input clk, rst;
reg dff;
always @ (posedge clk or posedge rst)
if (rst)
    {q,dff} <= 2'b00;
else
    {q,dff} <= {dff,d};
endmodule
module vl_cdc ( start_pl, take_it_pl, take_it_grant_pl, got_it_pl, clk_src, rst_src, clk_dst, rst_dst);
input start_pl;
output take_it_pl;
input take_it_grant_pl; // note: connect to take_it_pl to generate automatic ack
output got_it_pl;
input clk_src, rst_src;
input clk_dst, rst_dst;
wire take_it_tg, take_it_tg_sync;
wire got_it_tg, got_it_tg_sync;
// src -> dst
vl_pulse2toggle p2t0 (
    .pl(start_pl),
    .q(take_it_tg),
    .clk(clk_src),
    .rst(rst_src));
vl_synchronizer sync0 (
    .d(take_it_tg),
    .q(take_it_tg_sync),
    .clk(clk_dst),
    .rst(rst_dst));
vl_toggle2pulse t2p0 (
    .d(take_it_tg_sync),
    .pl(take_it_pl),
    .clk(clk_dst),
    .rst(rst_dst));
// dst -> src
vl_pulse2toggle p2t1 (
    .pl(take_it_grant_pl),
    .q(got_it_tg),
    .clk(clk_dst),
    .rst(rst_dst));
vl_synchronizer sync1 (
    .d(got_it_tg),
    .q(got_it_tg_sync),
    .clk(clk_src),
    .rst(rst_src));
vl_toggle2pulse t2p1 (
    .d(got_it_tg_sync),
    .pl(got_it_pl),
    .clk(clk_src),
    .rst(rst_src));
endmodule
//////////////////////////////////////////////////////////////////////
////                                                              ////
////  Logic functions                                             ////
////                                                              ////
////  Description                                                 ////
////  Logic functions such as multiplexers                        ////
////                                                              ////
////                                                              ////
////  To Do:                                                      ////
////   -                                                          ////
////                                                              ////
////  Author(s):                                                  ////
////      - Michael Unneback, unneback@opencores.org              ////
////        ORSoC AB                                              ////
////                                                              ////
//////////////////////////////////////////////////////////////////////
////                                                              ////
//// Copyright (C) 2010 Authors and OPENCORES.ORG                 ////
////                                                              ////
//// This source file may be used and distributed without         ////
//// restriction provided that this copyright statement is not    ////
//// removed from the file and that any derivative work contains  ////
//// the original copyright notice and the associated disclaimer. ////
////                                                              ////
//// This source file 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 2.1 of the License, or (at your option) any   ////
//// later version.                                               ////
////                                                              ////
//// This source 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 this source; if not, download it   ////
//// from http://www.opencores.org/lgpl.shtml                     ////
////                                                              ////
//////////////////////////////////////////////////////////////////////
module vl_mux_andor ( a, sel, dout);
parameter width = 32;
parameter nr_of_ports = 4;
input [nr_of_ports*width-1:0] a;
input [nr_of_ports-1:0] sel;
output reg [width-1:0] dout;
integer i,j;
always @ (a, sel)
begin
    dout = a[width-1:0] & {width{sel[0]}};
    for (i=1;i<nr_of_ports;i=i+1)
        for (j=0;j<width;j=j+1)
            dout[j] = (a[i*width + j] & sel[i]) | dout[j];
end
endmodule
module vl_mux2_andor ( a1, a0, sel, dout);
parameter width = 32;
localparam nr_of_ports = 2;
input [width-1:0] a1, a0;
input [nr_of_ports-1:0] sel;
output [width-1:0] dout;
vl_mux_andor
    # ( .width(width), .nr_of_ports(nr_of_ports))
    mux0( .a({a1,a0}), .sel(sel), .dout(dout));
endmodule
module vl_mux3_andor ( a2, a1, a0, sel, dout);
parameter width = 32;
localparam nr_of_ports = 3;
input [width-1:0] a2, a1, a0;
input [nr_of_ports-1:0] sel;
output [width-1:0] dout;
vl_mux_andor
    # ( .width(width), .nr_of_ports(nr_of_ports))
    mux0( .a({a2,a1,a0}), .sel(sel), .dout(dout));
endmodule
module vl_mux4_andor ( a3, a2, a1, a0, sel, dout);
parameter width = 32;
localparam nr_of_ports = 4;
input [width-1:0] a3, a2, a1, a0;
input [nr_of_ports-1:0] sel;
output [width-1:0] dout;
vl_mux_andor
    # ( .width(width), .nr_of_ports(nr_of_ports))
    mux0( .a({a3,a2,a1,a0}), .sel(sel), .dout(dout));
endmodule
module vl_mux5_andor ( a4, a3, a2, a1, a0, sel, dout);
parameter width = 32;
localparam nr_of_ports = 5;
input [width-1:0] a4, a3, a2, a1, a0;
input [nr_of_ports-1:0] sel;
output [width-1:0] dout;
vl_mux_andor
    # ( .width(width), .nr_of_ports(nr_of_ports))
    mux0( .a({a4,a3,a2,a1,a0}), .sel(sel), .dout(dout));
endmodule
module vl_mux6_andor ( a5, a4, a3, a2, a1, a0, sel, dout);
parameter width = 32;
localparam nr_of_ports = 6;
input [width-1:0] a5, a4, a3, a2, a1, a0;
input [nr_of_ports-1:0] sel;
output [width-1:0] dout;
vl_mux_andor
    # ( .width(width), .nr_of_ports(nr_of_ports))
    mux0( .a({a5,a4,a3,a2,a1,a0}), .sel(sel), .dout(dout));
endmodule
module vl_parity_generate (data, parity);
parameter word_size = 32;
parameter chunk_size = 8;
parameter parity_type = 1'b0; // 0 - even, 1 - odd parity
input [word_size-1:0] data;
output reg [word_size/chunk_size-1:0] parity;
integer i,j;
always @ (data)
for (i=0;i<word_size/chunk_size;i=i+1) begin
    parity[i] = parity_type;
    for (j=0;j<chunk_size;j=j+1) begin
        parity[i] = data[i*chunk_size+j] ^ parity[i];
    end
end
endmodule
module vl_parity_check( data, parity, parity_error);
parameter word_size = 32;
parameter chunk_size = 8;
parameter parity_type = 1'b0; // 0 - even, 1 - odd parity
input [word_size-1:0] data;
input [word_size/chunk_size-1:0] parity;
output parity_error;
reg [word_size/chunk_size-1:0] error_flag;
integer i,j;
always @ (data or parity)
for (i=0;i<word_size/chunk_size;i=i+1) begin
    error_flag[i] = parity[i] ^ parity_type;
    for (j=0;j<chunk_size;j=j+1) begin
        error_flag[i] = data[i*chunk_size+j] ^ error_flag[i];
    end
end
assign parity_error = |error_flag;
endmodule
//////////////////////////////////////////////////////////////////////
////                                                              ////
////  IO functions                                                ////
////                                                              ////
////  Description                                                 ////
////  IO functions such as IOB flip-flops                         ////
////                                                              ////
////                                                              ////
////  To Do:                                                      ////
////   -                                                          ////
////                                                              ////
////  Author(s):                                                  ////
////      - Michael Unneback, unneback@opencores.org              ////
////        ORSoC AB                                              ////
////                                                              ////
//////////////////////////////////////////////////////////////////////
////                                                              ////
//// Copyright (C) 2010 Authors and OPENCORES.ORG                 ////
////                                                              ////
//// This source file may be used and distributed without         ////
//// restriction provided that this copyright statement is not    ////
//// removed from the file and that any derivative work contains  ////
//// the original copyright notice and the associated disclaimer. ////
////                                                              ////
//// This source file 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 2.1 of the License, or (at your option) any   ////
//// later version.                                               ////
////                                                              ////
//// This source 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 this source; if not, download it   ////
//// from http://www.opencores.org/lgpl.shtml                     ////
////                                                              ////
//////////////////////////////////////////////////////////////////////
`timescale 1ns/1ns
module vl_o_dff (d_i, o_pad, clk, rst);
parameter width = 1;
parameter reset_value = {width{1'b0}};
input  [width-1:0]  d_i;
output [width-1:0] o_pad;
input clk, rst;
wire [width-1:0] d_i_int /*synthesis syn_keep = 1*/;
reg  [width-1:0] o_pad_int;
assign d_i_int = d_i;
genvar i;
generate
for (i=0;i<width;i=i+1) begin : dffs
    always @ (posedge clk or posedge rst)
    if (rst)
        o_pad_int[i] <= reset_value[i];
    else
        o_pad_int[i] <= d_i_int[i];
    assign #1 o_pad[i] = o_pad_int[i];
end
endgenerate
endmodule
`timescale 1ns/1ns
module vl_io_dff_oe ( d_i, d_o, oe, io_pad, clk, rst);
parameter width = 1;
input  [width-1:0] d_o;
output reg [width-1:0] d_i;
input oe;
inout [width-1:0] io_pad;
input clk, rst;
wire [width-1:0] oe_d /*synthesis syn_keep = 1*/;
reg [width-1:0] oe_q;
reg [width-1:0] d_o_q;
assign oe_d = {width{oe}};
genvar i;
generate
for (i=0;i<width;i=i+1) begin : dffs
    always @ (posedge clk or posedge rst)
    if (rst)
        oe_q[i] <= 1'b0;
    else
        oe_q[i] <= oe_d[i];
    always @ (posedge clk or posedge rst)
    if (rst)
        d_o_q[i] <= 1'b0;
    else
        d_o_q[i] <= d_o[i];
    always @ (posedge clk or posedge rst)
    if (rst)
        d_i[i] <= 1'b0;
    else
        d_i[i] <= io_pad[i];
    assign #1 io_pad[i] = (oe_q[i]) ? d_o_q[i] : 1'bz;
end
endgenerate
endmodule
module vl_o_ddr (d_h_i, d_l_i, o_pad, clk, rst);
parameter width = 1;
input  [width-1:0] d_h_i, d_l_i;
output [width-1:0] o_pad;
input clk, rst;
genvar i;
generate
for (i=0;i<width;i=i+1) begin : ddr
    ddio_out ddio_out0( .aclr(rst), .datain_h(d_h_i[i]), .datain_l(d_l_i[i]), .outclock(clk), .dataout(o_pad[i]) );
end
endgenerate
endmodule
module vl_o_clk ( clk_o_pad, clk, rst);
input clk, rst;
output clk_o_pad;
vl_o_ddr o_ddr0( .d_h_i(1'b1), .d_l_i(1'b0), .o_pad(clk_o_pad), .clk(clk), .rst(rst));
endmodule
//////////////////////////////////////////////////////////////////////
////                                                              ////
////  Versatile counter                                           ////
////                                                              ////
////  Description                                                 ////
////  Versatile counter, a reconfigurable binary, gray or LFSR    ////
////  counter                                                     ////
////                                                              ////
////  To Do:                                                      ////
////   - add LFSR with more taps                                  ////
////                                                              ////
////  Author(s):                                                  ////
////      - Michael Unneback, unneback@opencores.org              ////
////        ORSoC AB                                              ////
////                                                              ////
//////////////////////////////////////////////////////////////////////
////                                                              ////
//// Copyright (C) 2009 Authors and OPENCORES.ORG                 ////
////                                                              ////
//// This source file may be used and distributed without         ////
//// restriction provided that this copyright statement is not    ////
//// removed from the file and that any derivative work contains  ////
//// the original copyright notice and the associated disclaimer. ////
////                                                              ////
//// This source file 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 2.1 of the License, or (at your option) any   ////
//// later version.                                               ////
////                                                              ////
//// This source 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 this source; if not, download it   ////
//// from http://www.opencores.org/lgpl.shtml                     ////
////                                                              ////
//////////////////////////////////////////////////////////////////////
// binary counter
module vl_cnt_bin_ce (
 cke, q, rst, clk);
   parameter length = 4;
   input cke;
   output [length:1] q;
   input rst;
   input clk;
   parameter clear_value = 0;
   parameter set_value = 1;
   parameter wrap_value = 0;
   parameter level1_value = 15;
   reg  [length:1] qi;
   wire [length:1] q_next;
   assign q_next = qi + {{length-1{1'b0}},1'b1};
   always @ (posedge clk or posedge rst)
     if (rst)
       qi <= {length{1'b0}};
     else
     if (cke)
       qi <= q_next;
   assign q = qi;
endmodule
//////////////////////////////////////////////////////////////////////
////                                                              ////
////  Versatile counter                                           ////
////                                                              ////
////  Description                                                 ////
////  Versatile counter, a reconfigurable binary, gray or LFSR    ////
////  counter                                                     ////
////                                                              ////
////  To Do:                                                      ////
////   - add LFSR with more taps                                  ////
////                                                              ////
////  Author(s):                                                  ////
////      - Michael Unneback, unneback@opencores.org              ////
////        ORSoC AB                                              ////
////                                                              ////
//////////////////////////////////////////////////////////////////////
////                                                              ////
//// Copyright (C) 2009 Authors and OPENCORES.ORG                 ////
////                                                              ////
//// This source file may be used and distributed without         ////
//// restriction provided that this copyright statement is not    ////
//// removed from the file and that any derivative work contains  ////
//// the original copyright notice and the associated disclaimer. ////
////                                                              ////
//// This source file 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 2.1 of the License, or (at your option) any   ////
//// later version.                                               ////
////                                                              ////
//// This source 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 this source; if not, download it   ////
//// from http://www.opencores.org/lgpl.shtml                     ////
////                                                              ////
//////////////////////////////////////////////////////////////////////
// binary counter
module vl_cnt_bin_ce_rew_zq_l1 (
 cke, rew, zq, level1, rst, clk);
   parameter length = 4;
   input cke;
   input rew;
   output reg zq;
   output reg level1;
   input rst;
   input clk;
   parameter clear_value = 0;
   parameter set_value = 1;
   parameter wrap_value = 1;
   parameter level1_value = 15;
   wire clear;
   assign clear = 1'b0;
   reg  [length:1] qi;
   wire  [length:1] q_next, q_next_fw, q_next_rew;
   assign q_next_fw  = qi + {{length-1{1'b0}},1'b1};
   assign q_next_rew = qi - {{length-1{1'b0}},1'b1};
   assign q_next = rew ? q_next_rew : q_next_fw;
   always @ (posedge clk or posedge rst)
     if (rst)
       qi <= {length{1'b0}};
     else
     if (cke)
       qi <= q_next;
   always @ (posedge clk or posedge rst)
     if (rst)
       zq <= 1'b1;
     else
     if (cke)
       zq <= q_next == {length{1'b0}};
    always @ (posedge clk or posedge rst)
    if (rst)
        level1 <= 1'b0;
    else
    if (cke)
    if (clear)
        level1 <= 1'b0;
    else if (q_next == level1_value)
        level1 <= 1'b1;
    else if (qi == level1_value & rew)
        level1 <= 1'b0;
endmodule
//////////////////////////////////////////////////////////////////////
////                                                              ////
////  Versatile counter                                           ////
////                                                              ////
////  Description                                                 ////
////  Versatile counter, a reconfigurable binary, gray or LFSR    ////
////  counter                                                     ////
////                                                              ////
////  To Do:                                                      ////
////   - add LFSR with more taps                                  ////
////                                                              ////
////  Author(s):                                                  ////
////      - Michael Unneback, unneback@opencores.org              ////
////        ORSoC AB                                              ////
////                                                              ////
//////////////////////////////////////////////////////////////////////
////                                                              ////
//// Copyright (C) 2009 Authors and OPENCORES.ORG                 ////
////                                                              ////
//// This source file may be used and distributed without         ////
//// restriction provided that this copyright statement is not    ////
//// removed from the file and that any derivative work contains  ////
//// the original copyright notice and the associated disclaimer. ////
////                                                              ////
//// This source file 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 2.1 of the License, or (at your option) any   ////
//// later version.                                               ////
////                                                              ////
//// This source 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 this source; if not, download it   ////
//// from http://www.opencores.org/lgpl.shtml                     ////
////                                                              ////
//////////////////////////////////////////////////////////////////////
// binary counter
module vl_cnt_bin_ce_rew_q_zq_l1 (
 cke, rew, q, zq, level1, rst, clk);
   parameter length = 4;
   input cke;
   input rew;
   output [length:1] q;
   output reg zq;
   output reg level1;
   input rst;
   input clk;
   parameter clear_value = 0;
   parameter set_value = 1;
   parameter wrap_value = 1;
   parameter level1_value = 15;
   wire clear;
   assign clear = 1'b0;
   reg  [length:1] qi;
   wire  [length:1] q_next, q_next_fw, q_next_rew;
   assign q_next_fw  = qi + {{length-1{1'b0}},1'b1};
   assign q_next_rew = qi - {{length-1{1'b0}},1'b1};
   assign q_next = rew ? q_next_rew : q_next_fw;
   always @ (posedge clk or posedge rst)
     if (rst)
       qi <= {length{1'b0}};
     else
     if (cke)
       qi <= q_next;
   assign q = qi;
   always @ (posedge clk or posedge rst)
     if (rst)
       zq <= 1'b1;
     else
     if (cke)
       zq <= q_next == {length{1'b0}};
    always @ (posedge clk or posedge rst)
    if (rst)
        level1 <= 1'b0;
    else
    if (cke)
    if (clear)
        level1 <= 1'b0;
    else if (q_next == level1_value)
        level1 <= 1'b1;
    else if (qi == level1_value & rew)
        level1 <= 1'b0;
endmodule
//////////////////////////////////////////////////////////////////////
////                                                              ////
////  Versatile counter                                           ////
////                                                              ////
////  Description                                                 ////
////  Versatile counter, a reconfigurable binary, gray or LFSR    ////
////  counter                                                     ////
////                                                              ////
////  To Do:                                                      ////
////   - add LFSR with more taps                                  ////
////                                                              ////
////  Author(s):                                                  ////
////      - Michael Unneback, unneback@opencores.org              ////
////        ORSoC AB                                              ////
////                                                              ////
//////////////////////////////////////////////////////////////////////
////                                                              ////
//// Copyright (C) 2009 Authors and OPENCORES.ORG                 ////
////                                                              ////
//// This source file may be used and distributed without         ////
//// restriction provided that this copyright statement is not    ////
//// removed from the file and that any derivative work contains  ////
//// the original copyright notice and the associated disclaimer. ////
////                                                              ////
//// This source file 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 2.1 of the License, or (at your option) any   ////
//// later version.                                               ////
////                                                              ////
//// This source 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 this source; if not, download it   ////
//// from http://www.opencores.org/lgpl.shtml                     ////
////                                                              ////
//////////////////////////////////////////////////////////////////////
// LFSR counter
module vl_cnt_lfsr_zq (
 zq, rst, clk);
   parameter length = 4;
   output reg zq;
   input rst;
   input clk;
   parameter clear_value = 0;
   parameter set_value = 1;
   parameter wrap_value = 8;
   parameter level1_value = 15;
   reg  [length:1] qi;
   reg lfsr_fb;
   wire [length:1] q_next;
   reg [32:1] polynom;
   integer i;
   always @ (qi)
   begin
        case (length)
         2: polynom = 32'b11;                               // 0x3
         3: polynom = 32'b110;                              // 0x6
         4: polynom = 32'b1100;                             // 0xC
         5: polynom = 32'b10100;                            // 0x14
         6: polynom = 32'b110000;                           // 0x30
         7: polynom = 32'b1100000;                          // 0x60
         8: polynom = 32'b10111000;                         // 0xb8
         9: polynom = 32'b100010000;                        // 0x110
        10: polynom = 32'b1001000000;                       // 0x240
        11: polynom = 32'b10100000000;                      // 0x500
        12: polynom = 32'b100000101001;                     // 0x829
        13: polynom = 32'b1000000001100;                    // 0x100C
        14: polynom = 32'b10000000010101;                   // 0x2015
        15: polynom = 32'b110000000000000;                  // 0x6000
        16: polynom = 32'b1101000000001000;                 // 0xD008
        17: polynom = 32'b10010000000000000;                // 0x12000
        18: polynom = 32'b100000010000000000;               // 0x20400
        19: polynom = 32'b1000000000000100011;              // 0x40023
        20: polynom = 32'b10010000000000000000;             // 0x90000
        21: polynom = 32'b101000000000000000000;            // 0x140000
        22: polynom = 32'b1100000000000000000000;           // 0x300000
        23: polynom = 32'b10000100000000000000000;          // 0x420000
        24: polynom = 32'b111000010000000000000000;         // 0xE10000
        25: polynom = 32'b1001000000000000000000000;        // 0x1200000
        26: polynom = 32'b10000000000000000000100011;       // 0x2000023
        27: polynom = 32'b100000000000000000000010011;      // 0x4000013
        28: polynom = 32'b1100100000000000000000000000;     // 0xC800000
        29: polynom = 32'b10100000000000000000000000000;    // 0x14000000
        30: polynom = 32'b100000000000000000000000101001;   // 0x20000029
        31: polynom = 32'b1001000000000000000000000000000;  // 0x48000000
        32: polynom = 32'b10000000001000000000000000000011; // 0x80200003
        default: polynom = 32'b0;
        endcase
        lfsr_fb = qi[length];
        for (i=length-1; i>=1; i=i-1) begin
            if (polynom[i])
                lfsr_fb = lfsr_fb  ~^ qi[i];
        end
    end
   assign q_next = (qi == wrap_value) ? {length{1'b0}} :{qi[length-1:1],lfsr_fb};
   always @ (posedge clk or posedge rst)
     if (rst)
       qi <= {length{1'b0}};
     else
       qi <= q_next;
   always @ (posedge clk or posedge rst)
     if (rst)
       zq <= 1'b1;
     else
       zq <= q_next == {length{1'b0}};
endmodule
//////////////////////////////////////////////////////////////////////
////                                                              ////
////  Versatile counter                                           ////
////                                                              ////
////  Description                                                 ////
////  Versatile counter, a reconfigurable binary, gray or LFSR    ////
////  counter                                                     ////
////                                                              ////
////  To Do:                                                      ////
////   - add LFSR with more taps                                  ////
////                                                              ////
////  Author(s):                                                  ////
////      - Michael Unneback, unneback@opencores.org              ////
////        ORSoC AB                                              ////
////                                                              ////
//////////////////////////////////////////////////////////////////////
////                                                              ////
//// Copyright (C) 2009 Authors and OPENCORES.ORG                 ////
////                                                              ////
//// This source file may be used and distributed without         ////
//// restriction provided that this copyright statement is not    ////
//// removed from the file and that any derivative work contains  ////
//// the original copyright notice and the associated disclaimer. ////
////                                                              ////
//// This source file 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 2.1 of the License, or (at your option) any   ////
//// later version.                                               ////
////                                                              ////
//// This source 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 this source; if not, download it   ////
//// from http://www.opencores.org/lgpl.shtml                     ////
////                                                              ////
//////////////////////////////////////////////////////////////////////
// LFSR counter
module vl_cnt_lfsr_ce (
 cke, zq, rst, clk);
   parameter length = 4;
   input cke;
   output reg zq;
   input rst;
   input clk;
   parameter clear_value = 0;
   parameter set_value = 1;
   parameter wrap_value = 0;
   parameter level1_value = 15;
   reg  [length:1] qi;
   reg lfsr_fb;
   wire [length:1] q_next;
   reg [32:1] polynom;
   integer i;
   always @ (qi)
   begin
        case (length)
         2: polynom = 32'b11;                               // 0x3
         3: polynom = 32'b110;                              // 0x6
         4: polynom = 32'b1100;                             // 0xC
         5: polynom = 32'b10100;                            // 0x14
         6: polynom = 32'b110000;                           // 0x30
         7: polynom = 32'b1100000;                          // 0x60
         8: polynom = 32'b10111000;                         // 0xb8
         9: polynom = 32'b100010000;                        // 0x110
        10: polynom = 32'b1001000000;                       // 0x240
        11: polynom = 32'b10100000000;                      // 0x500
        12: polynom = 32'b100000101001;                     // 0x829
        13: polynom = 32'b1000000001100;                    // 0x100C
        14: polynom = 32'b10000000010101;                   // 0x2015
        15: polynom = 32'b110000000000000;                  // 0x6000
        16: polynom = 32'b1101000000001000;                 // 0xD008
        17: polynom = 32'b10010000000000000;                // 0x12000
        18: polynom = 32'b100000010000000000;               // 0x20400
        19: polynom = 32'b1000000000000100011;              // 0x40023
        20: polynom = 32'b10010000000000000000;             // 0x90000
        21: polynom = 32'b101000000000000000000;            // 0x140000
        22: polynom = 32'b1100000000000000000000;           // 0x300000
        23: polynom = 32'b10000100000000000000000;          // 0x420000
        24: polynom = 32'b111000010000000000000000;         // 0xE10000
        25: polynom = 32'b1001000000000000000000000;        // 0x1200000
        26: polynom = 32'b10000000000000000000100011;       // 0x2000023
        27: polynom = 32'b100000000000000000000010011;      // 0x4000013
        28: polynom = 32'b1100100000000000000000000000;     // 0xC800000
        29: polynom = 32'b10100000000000000000000000000;    // 0x14000000
        30: polynom = 32'b100000000000000000000000101001;   // 0x20000029
        31: polynom = 32'b1001000000000000000000000000000;  // 0x48000000
        32: polynom = 32'b10000000001000000000000000000011; // 0x80200003
        default: polynom = 32'b0;
        endcase
        lfsr_fb = qi[length];
        for (i=length-1; i>=1; i=i-1) begin
            if (polynom[i])
                lfsr_fb = lfsr_fb  ~^ qi[i];
        end
    end
   assign q_next = (qi == wrap_value) ? {length{1'b0}} :{qi[length-1:1],lfsr_fb};
   always @ (posedge clk or posedge rst)
     if (rst)
       qi <= {length{1'b0}};
     else
     if (cke)
       qi <= q_next;
   always @ (posedge clk or posedge rst)
     if (rst)
       zq <= 1'b1;
     else
     if (cke)
       zq <= q_next == {length{1'b0}};
endmodule
//////////////////////////////////////////////////////////////////////
////                                                              ////
////  Versatile counter                                           ////
////                                                              ////
////  Description                                                 ////
////  Versatile counter, a reconfigurable binary, gray or LFSR    ////
////  counter                                                     ////
////                                                              ////
////  To Do:                                                      ////
////   - add LFSR with more taps                                  ////
////                                                              ////
////  Author(s):                                                  ////
////      - Michael Unneback, unneback@opencores.org              ////
////        ORSoC AB                                              ////
////                                                              ////
//////////////////////////////////////////////////////////////////////
////                                                              ////
//// Copyright (C) 2009 Authors and OPENCORES.ORG                 ////
////                                                              ////
//// This source file may be used and distributed without         ////
//// restriction provided that this copyright statement is not    ////
//// removed from the file and that any derivative work contains  ////
//// the original copyright notice and the associated disclaimer. ////
////                                                              ////
//// This source file 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 2.1 of the License, or (at your option) any   ////
//// later version.                                               ////
////                                                              ////
//// This source 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 this source; if not, download it   ////
//// from http://www.opencores.org/lgpl.shtml                     ////
////                                                              ////
//////////////////////////////////////////////////////////////////////
// GRAY counter
module vl_cnt_gray_ce_bin (
 cke, q, q_bin, rst, clk);
   parameter length = 4;
   input cke;
   output reg [length:1] q;
   output [length:1] q_bin;
   input rst;
   input clk;
   parameter clear_value = 0;
   parameter set_value = 1;
   parameter wrap_value = 8;
   parameter level1_value = 15;
   reg  [length:1] qi;
   wire [length:1] q_next;
   assign q_next = qi + {{length-1{1'b0}},1'b1};
   always @ (posedge clk or posedge rst)
     if (rst)
       qi <= {length{1'b0}};
     else
     if (cke)
       qi <= q_next;
   always @ (posedge clk or posedge rst)
     if (rst)
       q <= {length{1'b0}};
     else
       if (cke)
         q <= (q_next>>1) ^ q_next;
   assign q_bin = qi;
endmodule
//////////////////////////////////////////////////////////////////////
////                                                              ////
////  Versatile library, counters                                 ////
////                                                              ////
////  Description                                                 ////
////  counters                                                    ////
////                                                              ////
////                                                              ////
////  To Do:                                                      ////
////   - add more counters                                        ////
////                                                              ////
////  Author(s):                                                  ////
////      - Michael Unneback, unneback@opencores.org              ////
////        ORSoC AB                                              ////
////                                                              ////
//////////////////////////////////////////////////////////////////////
////                                                              ////
//// Copyright (C) 2010 Authors and OPENCORES.ORG                 ////
////                                                              ////
//// This source file may be used and distributed without         ////
//// restriction provided that this copyright statement is not    ////
//// removed from the file and that any derivative work contains  ////
//// the original copyright notice and the associated disclaimer. ////
////                                                              ////
//// This source file 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 2.1 of the License, or (at your option) any   ////
//// later version.                                               ////
////                                                              ////
//// This source 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 this source; if not, download it   ////
//// from http://www.opencores.org/lgpl.shtml                     ////
////                                                              ////
//////////////////////////////////////////////////////////////////////
module vl_cnt_shreg_wrap ( q, rst, clk);
   parameter length = 4;
   output reg [0:length-1] q;
   input rst;
   input clk;
    always @ (posedge clk or posedge rst)
    if (rst)
        q <= {1'b1,{length-1{1'b0}}};
    else
        q <= {q[length-1],q[0:length-2]};
endmodule
module vl_cnt_shreg_ce_wrap ( cke, q, rst, clk);
   parameter length = 4;
   input cke;
   output reg [0:length-1] q;
   input rst;
   input clk;
    always @ (posedge clk or posedge rst)
    if (rst)
        q <= {1'b1,{length-1{1'b0}}};
    else
        if (cke)
            q <= {q[length-1],q[0:length-2]};
endmodule
module vl_cnt_shreg_clear ( clear, q, rst, clk);
   parameter length = 4;
   input clear;
   output reg [0:length-1] q;
   input rst;
   input clk;
    always @ (posedge clk or posedge rst)
    if (rst)
        q <= {1'b1,{length-1{1'b0}}};
    else
        if (clear)
            q <= {1'b1,{length-1{1'b0}}};
        else
            q <= q >> 1;
endmodule
module vl_cnt_shreg_ce_clear ( cke, clear, q, rst, clk);
   parameter length = 4;
   input cke, clear;
   output reg [0:length-1] q;
   input rst;
   input clk;
    always @ (posedge clk or posedge rst)
    if (rst)
        q <= {1'b1,{length-1{1'b0}}};
    else
        if (cke)
            if (clear)
                q <= {1'b1,{length-1{1'b0}}};
            else
                q <= q >> 1;
endmodule
module vl_cnt_shreg_ce_clear_wrap ( cke, clear, q, rst, clk);
   parameter length = 4;
   input cke, clear;
   output reg [0:length-1] q;
   input rst;
   input clk;
    always @ (posedge clk or posedge rst)
    if (rst)
        q <= {1'b1,{length-1{1'b0}}};
    else
        if (cke)
            if (clear)
                q <= {1'b1,{length-1{1'b0}}};
            else
            q <= {q[length-1],q[0:length-2]};
endmodule
//////////////////////////////////////////////////////////////////////
////                                                              ////
////  Versatile library, memories                                 ////
////                                                              ////
////  Description                                                 ////
////  memories                                                    ////
////                                                              ////
////                                                              ////
////  To Do:                                                      ////
////   - add more memory types                                    ////
////                                                              ////
////  Author(s):                                                  ////
////      - Michael Unneback, unneback@opencores.org              ////
////        ORSoC AB                                              ////
////                                                              ////
//////////////////////////////////////////////////////////////////////
////                                                              ////
//// Copyright (C) 2010 Authors and OPENCORES.ORG                 ////
////                                                              ////
//// This source file may be used and distributed without         ////
//// restriction provided that this copyright statement is not    ////
//// removed from the file and that any derivative work contains  ////
//// the original copyright notice and the associated disclaimer. ////
////                                                              ////
//// This source file 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 2.1 of the License, or (at your option) any   ////
//// later version.                                               ////
////                                                              ////
//// This source 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 this source; if not, download it   ////
//// from http://www.opencores.org/lgpl.shtml                     ////
////                                                              ////
//////////////////////////////////////////////////////////////////////
/// ROM
module vl_rom_init ( adr, q, clk);
   parameter data_width = 32;
   parameter addr_width = 8;
   parameter mem_size = 1<<addr_width;
   input [(addr_width-1):0]       adr;
   output reg [(data_width-1):0] q;
   input                         clk;
   reg [data_width-1:0] rom [mem_size-1:0];
   parameter memory_file = "vl_rom.vmem";
   initial
     begin
        $readmemh(memory_file, rom);
     end
   always @ (posedge clk)
     q <= rom[adr];
endmodule
// Single port RAM
module vl_ram ( d, adr, we, q, clk);
   parameter data_width = 32;
   parameter addr_width = 8;
   parameter mem_size = 1<<addr_width;
   parameter debug = 0;
   input [(data_width-1):0]      d;
   input [(addr_width-1):0]       adr;
   input                         we;
   output reg [(data_width-1):0] q;
   input                         clk;
   reg [data_width-1:0] ram [mem_size-1:0];
    parameter memory_init = 0;
    parameter memory_file = "vl_ram.vmem";
    generate
    if (memory_init == 1) begin : init_mem
        initial
            $readmemh(memory_file, ram);
   end else if (memory_init == 2) begin : init_zero
        integer k;
        initial
            for (k = 0; k < mem_size; k = k + 1)
                ram[k] = 0;
   end
   endgenerate
    generate
    if (debug==1) begin : debug_we
        always @ (posedge clk)
        if (we)
            $display ("Value %h written at address %h : time %t", d, adr, $time);
    end
    endgenerate
   always @ (posedge clk)
   begin
   if (we)
     ram[adr] <= d;
   q <= ram[adr];
   end
endmodule
module vl_ram_be ( d, adr, be, we, q, clk);
   parameter data_width = 32;
   parameter addr_width = 6;
   parameter mem_size = 1<<addr_width;
   input [(data_width-1):0]      d;
   input [(addr_width-1):0]       adr;
   input [(data_width/8)-1:0]    be;
   input                         we;
   output reg [(data_width-1):0] q;
   input                         clk;
`ifdef SYSTEMVERILOG
    // use a multi-dimensional packed array
    //t o model individual bytes within the word
    logic [data_width/8-1:0][7:0] ram [0:mem_size-1];// # words = 1 << address width
`else
    reg [data_width-1:0] ram [mem_size-1:0];
    wire [data_width/8-1:0] cke;
`endif
    parameter memory_init = 0;
    parameter memory_file = "vl_ram.vmem";
    generate
    if (memory_init == 1) begin : init_mem
        initial
            $readmemh(memory_file, ram);
    end else if (memory_init == 2) begin : init_zero
        integer k;
        initial
            for (k = 0; k < mem_size; k = k + 1)
                ram[k] = 0;
    end
   endgenerate
`ifdef SYSTEMVERILOG
always_ff@(posedge clk)
begin
    if(we) begin
        if(be[3]) ram[adr][3] <= d[31:24];
        if(be[2]) ram[adr][2] <= d[23:16];
        if(be[1]) ram[adr][1] <= d[15:8];
        if(be[0]) ram[adr][0] <= d[7:0];
    end
        q <= ram[adr];
end
`else
assign cke = {data_width/8{we}} & be;
   genvar i;
   generate for (i=0;i<data_width/8;i=i+1) begin : be_ram
      always @ (posedge clk)
      if (cke[i])
        ram[adr][(i+1)*8-1:i*8] <= d[(i+1)*8-1:i*8];
   end
   endgenerate
   always @ (posedge clk)
      q <= ram[adr];
`endif
`ifdef verilator
   // Function to access RAM (for use by Verilator).
   function [31:0] get_mem;
      // verilator public
      input [addr_width-1:0]             addr;
      get_mem = ram[addr];
   endfunction // get_mem
   // Function to write RAM (for use by Verilator).
   function set_mem;
      // verilator public
      input [addr_width-1:0]             addr;
      input [data_width-1:0]             data;
      ram[addr] = data;
   endfunction // set_mem
`endif
endmodule
module vl_dpram_1r1w ( d_a, adr_a, we_a, clk_a, q_b, adr_b, clk_b );
   parameter data_width = 32;
   parameter addr_width = 8;
   parameter mem_size = 1<<addr_width;
   input [(data_width-1):0]      d_a;
   input [(addr_width-1):0]       adr_a;
   input [(addr_width-1):0]       adr_b;
   input                         we_a;
   output reg [(data_width-1):0]          q_b;
   input                         clk_a, clk_b;
   reg [data_width-1:0] ram [0:mem_size-1] ;
    parameter memory_init = 0;
    parameter memory_file = "vl_ram.vmem";
    parameter debug = 0;
    generate
    if (memory_init == 1) begin : init_mem
        initial
            $readmemh(memory_file, ram);
    end else if (memory_init == 2) begin : init_zero
        integer k;
        initial
            for (k = 0; k < mem_size; k = k + 1)
                ram[k] = 0;
    end
   endgenerate
    generate
    if (debug==1) begin : debug_we
        always @ (posedge clk_a)
        if (we_a)
            $display ("Debug: Value %h written at address %h : time %t", d_a, adr_a, $time);
    end
    endgenerate
   always @ (posedge clk_a)
   if (we_a)
     ram[adr_a] <= d_a;
   always @ (posedge clk_b)
      q_b = ram[adr_b];
endmodule
module vl_dpram_2r1w ( d_a, q_a, adr_a, we_a, clk_a, q_b, adr_b, clk_b );
   parameter data_width = 32;
   parameter addr_width = 8;
   parameter mem_size = 1<<addr_width;
   input [(data_width-1):0]      d_a;
   input [(addr_width-1):0]       adr_a;
   input [(addr_width-1):0]       adr_b;
   input                         we_a;
   output [(data_width-1):0]      q_b;
   output reg [(data_width-1):0] q_a;
   input                         clk_a, clk_b;
   reg [(data_width-1):0]         q_b;
   reg [data_width-1:0] ram [0:mem_size-1] ;
    parameter memory_init = 0;
    parameter memory_file = "vl_ram.vmem";
    parameter debug = 0;
    generate
    if (memory_init == 1) begin : init_mem
        initial
            $readmemh(memory_file, ram);
    end else if (memory_init == 2) begin : init_zero
        integer k;
        initial
            for (k = 0; k < mem_size; k = k + 1)
                ram[k] = 0;
    end
   endgenerate
    generate
    if (debug==1) begin : debug_we
        always @ (posedge clk_a)
        if (we_a)
            $display ("Debug: Value %h written at address %h : time %t", d_a, adr_a, $time);
    end
    endgenerate
   always @ (posedge clk_a)
     begin
        q_a <= ram[adr_a];
        if (we_a)
             ram[adr_a] <= d_a;
     end
   always @ (posedge clk_b)
          q_b <= ram[adr_b];
endmodule
module vl_dpram_1r2w ( d_a, q_a, adr_a, we_a, clk_a, d_b, adr_b, we_b, clk_b );
   parameter data_width = 32;
   parameter addr_width = 8;
   parameter mem_size = 1<<addr_width;
   input [(data_width-1):0]      d_a;
   input [(addr_width-1):0]       adr_a;
   input [(addr_width-1):0]       adr_b;
   input                         we_a;
   input [(data_width-1):0]       d_b;
   output reg [(data_width-1):0] q_a;
   input                         we_b;
   input                         clk_a, clk_b;
   reg [(data_width-1):0]         q_b;
   reg [data_width-1:0] ram [0:mem_size-1] ;
    parameter memory_init = 0;
    parameter memory_file = "vl_ram.vmem";
    parameter debug = 0;
    generate
    if (memory_init == 1) begin : init_mem
        initial
            $readmemh(memory_file, ram);
    end else if (memory_init == 2) begin : init_zero
        integer k;
        initial
            for (k = 0; k < mem_size; k = k + 1)
                ram[k] = 0;
    end
   endgenerate
    generate
    if (debug==1) begin : debug_we
        always @ (posedge clk_a)
        if (we_a)
            $display ("Debug: Value %h written at address %h : time %t", d_a, adr_a, $time);
        always @ (posedge clk_b)
        if (we_b)
            $display ("Debug: Value %h written at address %h : time %t", d_b, adr_b, $time);
    end
    endgenerate
   always @ (posedge clk_a)
     begin
        q_a <= ram[adr_a];
        if (we_a)
             ram[adr_a] <= d_a;
     end
   always @ (posedge clk_b)
     begin
        if (we_b)
          ram[adr_b] <= d_b;
     end
endmodule
module vl_dpram_2r2w ( d_a, q_a, adr_a, we_a, clk_a, d_b, q_b, adr_b, we_b, clk_b );
   parameter data_width = 32;
   parameter addr_width = 8;
   parameter mem_size = 1<<addr_width;
   input [(data_width-1):0]      d_a;
   input [(addr_width-1):0]       adr_a;
   input [(addr_width-1):0]       adr_b;
   input                         we_a;
   output [(data_width-1):0]      q_b;
   input [(data_width-1):0]       d_b;
   output reg [(data_width-1):0] q_a;
   input                         we_b;
   input                         clk_a, clk_b;
   reg [(data_width-1):0]         q_b;
   reg [data_width-1:0] ram [0:mem_size-1] ;
    parameter memory_init = 0;
    parameter memory_file = "vl_ram.vmem";
    parameter debug = 0;
    generate
    if (memory_init) begin : init_mem
        initial
            $readmemh(memory_file, ram);
    end else if (memory_init == 2) begin : init_zero
        integer k;
        initial
            for (k = 0; k < mem_size; k = k + 1)
                ram[k] = 0;
    end
   endgenerate
    generate
    if (debug==1) begin : debug_we
        always @ (posedge clk_a)
        if (we_a)
            $display ("Debug: Value %h written at address %h : time %t", d_a, adr_a, $time);
        always @ (posedge clk_b)
        if (we_b)
            $display ("Debug: Value %h written at address %h : time %t", d_b, adr_b, $time);
    end
    endgenerate
   always @ (posedge clk_a)
     begin
        q_a <= ram[adr_a];
        if (we_a)
             ram[adr_a] <= d_a;
     end
   always @ (posedge clk_b)
     begin
        q_b <= ram[adr_b];
        if (we_b)
          ram[adr_b] <= d_b;
     end
endmodule
module vl_dpram_be_2r2w ( d_a, q_a, adr_a, be_a, we_a, clk_a, d_b, q_b, adr_b, be_b, we_b, clk_b );
   parameter a_data_width = 32;
   parameter a_addr_width = 8;
   parameter b_data_width = 64; //a_data_width;
   //localparam b_addr_width = a_data_width * a_addr_width / b_data_width;
   localparam b_addr_width =
        (a_data_width==b_data_width) ? a_addr_width :
        (a_data_width==b_data_width*2) ? a_addr_width+1 :
        (a_data_width==b_data_width*4) ? a_addr_width+2 :
        (a_data_width==b_data_width*8) ? a_addr_width+3 :
        (a_data_width==b_data_width*16) ? a_addr_width+4 :
        (a_data_width==b_data_width*32) ? a_addr_width+5 :
        (a_data_width==b_data_width/2) ? a_addr_width-1 :
        (a_data_width==b_data_width/4) ? a_addr_width-2 :
        (a_data_width==b_data_width/8) ? a_addr_width-3 :
        (a_data_width==b_data_width/16) ? a_addr_width-4 :
        (a_data_width==b_data_width/32) ? a_addr_width-5 : 0;
   localparam ratio = (a_addr_width>b_addr_width) ? (a_addr_width/b_addr_width) : (b_addr_width/a_addr_width);
   parameter mem_size = (a_addr_width>b_addr_width) ? (1<<b_addr_width) : (1<<a_addr_width);
   parameter memory_init = 0;
   parameter memory_file = "vl_ram.vmem";
   parameter debug = 0;
   input [(a_data_width-1):0]      d_a;
   input [(a_addr_width-1):0]       adr_a;
   input [(a_data_width/8-1):0]    be_a;
   input                           we_a;
   output reg [(a_data_width-1):0] q_a;
   input [(b_data_width-1):0]       d_b;
   input [(b_addr_width-1):0]       adr_b;
   input [(b_data_width/8-1):0]    be_b;
   input                           we_b;
   output reg [(b_data_width-1):0]          q_b;
   input                           clk_a, clk_b;
    generate
    if (debug==1) begin : debug_we
        always @ (posedge clk_a)
        if (we_a)
            $display ("Debug: Value %h written at address %h : time %t", d_a, adr_a, $time);
        always @ (posedge clk_b)
        if (we_b)
            $display ("Debug: Value %h written at address %h : time %t", d_b, adr_b, $time);
    end
    endgenerate
`ifdef SYSTEMVERILOG
// use a multi-dimensional packed array
//to model individual bytes within the word
generate
if (a_data_width==32 & b_data_width==32) begin : dpram_3232
    logic [0:3][7:0] ram [0:mem_size-1] ;
    initial
        if (memory_init==1)
            $readmemh(memory_file, ram);
    integer k;
    initial
        if (memory_init==2)
            for (k = 0; k < mem_size; k = k + 1)
                ram[k] = 0;
    always_ff@(posedge clk_a)
    begin
        if(we_a) begin
            if(be_a[3]) ram[adr_a][0] <= d_a[31:24];
            if(be_a[2]) ram[adr_a][1] <= d_a[23:16];
            if(be_a[1]) ram[adr_a][2] <= d_a[15:8];
            if(be_a[0]) ram[adr_a][3] <= d_a[7:0];
        end
    end
    always@(posedge clk_a)
        q_a = ram[adr_a];
    always_ff@(posedge clk_b)
    begin
        if(we_b) begin
            if(be_b[3]) ram[adr_b][0] <= d_b[31:24];
            if(be_b[2]) ram[adr_b][1] <= d_b[23:16];
            if(be_b[1]) ram[adr_b][2] <= d_b[15:8];
            if(be_b[0]) ram[adr_b][3] <= d_b[7:0];
        end
    end
    always@(posedge clk_b)
        q_b = ram[adr_b];
end
endgenerate
generate
if (a_data_width==64 & b_data_width==64) begin : dpram_6464
    logic [0:7][7:0] ram [0:mem_size-1] ;
    initial
        if (memory_init==1)
            $readmemh(memory_file, ram);
    integer k;
    initial
        if (memory_init==2)
            for (k = 0; k < mem_size; k = k + 1)
                ram[k] = 0;
    always_ff@(posedge clk_a)
    begin
        if(we_a) begin
            if(be_a[7]) ram[adr_a][7] <= d_a[63:56];
            if(be_a[6]) ram[adr_a][6] <= d_a[55:48];
            if(be_a[5]) ram[adr_a][5] <= d_a[47:40];
            if(be_a[4]) ram[adr_a][4] <= d_a[39:32];
            if(be_a[3]) ram[adr_a][3] <= d_a[31:24];
            if(be_a[2]) ram[adr_a][2] <= d_a[23:16];
            if(be_a[1]) ram[adr_a][1] <= d_a[15:8];
            if(be_a[0]) ram[adr_a][0] <= d_a[7:0];
        end
    end
    always@(posedge clk_a)
        q_a = ram[adr_a];
    always_ff@(posedge clk_b)
    begin
        if(we_b) begin
            if(be_b[7]) ram[adr_b][7] <= d_b[63:56];
            if(be_b[6]) ram[adr_b][6] <= d_b[55:48];
            if(be_b[5]) ram[adr_b][5] <= d_b[47:40];
            if(be_b[4]) ram[adr_b][4] <= d_b[39:32];
            if(be_b[3]) ram[adr_b][3] <= d_b[31:24];
            if(be_b[2]) ram[adr_b][2] <= d_b[23:16];
            if(be_b[1]) ram[adr_b][1] <= d_b[15:8];
            if(be_b[0]) ram[adr_b][0] <= d_b[7:0];
        end
    end
    always@(posedge clk_b)
        q_b = ram[adr_b];
end
endgenerate
generate
if (a_data_width==32 & b_data_width==16) begin : dpram_3216
logic [31:0] temp;
vl_dpram_be_2r2w # (.a_data_width(32), .b_data_width(32), .a_addr_width(a_addr_width), .mem_size(mem_size), .memory_init(memory_init), .memory_file(memory_file))
dpram3232 (
    .d_a(d_a),
    .q_a(q_a),
    .adr_a(adr_a),
    .be_a(be_a),
    .we_a(we_a),
    .clk_a(clk_a),
    .d_b({d_b,d_b}),
    .q_b(temp),
    .adr_b(adr_b[b_addr_width-1:1]),
    .be_b({be_b,be_b} & {{2{adr_b[0]}},{2{!adr_b[0]}}}),
    .we_b(we_b),
    .clk_b(clk_b)
);
always @ (adr_b[0] or temp)
    if (adr_b[0])
        q_b = temp[31:16];
    else
        q_b = temp[15:0];
end
endgenerate
generate
if (a_data_width==32 & b_data_width==64) begin : dpram_3264
logic [63:0] temp;
vl_dpram_be_2r2w # (.a_data_width(32), .b_data_width(64), .a_addr_width(a_addr_width), .mem_size(mem_size), .memory_init(memory_init), .memory_file(memory_file))
dpram6464 (
    .d_a({d_a,d_a}),
    .q_a(temp),
    .adr_a(adr_a[a_addr_width-1:1]),
    .be_a({be_a,be_a} & {{4{adr_a[0]}},{4{!adr_a[0]}}}),
    .we_a(we_a),
    .clk_a(clk_a),
    .d_b(d_b),
    .q_b(q_b),
    .adr_b(adr_b),
    .be_b(be_b),
    .we_b(we_b),
    .clk_b(clk_b)
);
always @ (adr_a[0] or temp)
    if (adr_a[0])
        q_a = temp[63:32];
    else
        q_a = temp[31:0];
end
endgenerate
`else
    // This modules requires SystemVerilog
    // at this point anyway
`endif
endmodule
// FIFO
module vl_fifo_1r1w_fill_level_sync (
    d, wr, fifo_full,
    q, rd, fifo_empty,
    fill_level,
    clk, rst
    );
parameter data_width = 18;
parameter addr_width = 4;
// write side
input  [data_width-1:0] d;
input                   wr;
output                  fifo_full;
// read side
output [data_width-1:0] q;
input                   rd;
output                  fifo_empty;
// common
output [addr_width:0]   fill_level;
input rst, clk;
wire [addr_width:1] wadr, radr;
vl_cnt_bin_ce
    # ( .length(addr_width))
    fifo_wr_adr( .cke(wr), .q(wadr), .rst(rst), .clk(clk));
vl_cnt_bin_ce
    # (.length(addr_width))
    fifo_rd_adr( .cke(rd), .q(radr), .rst(rst), .clk(clk));
vl_dpram_1r1w
    # (.data_width(data_width), .addr_width(addr_width))
    dpram ( .d_a(d), .adr_a(wadr), .we_a(wr), .clk_a(clk), .q_b(q), .adr_b(radr), .clk_b(clk));
vl_cnt_bin_ce_rew_q_zq_l1
    # (.length(addr_width+1), .level1_value(1<<addr_width))
    fill_level_cnt( .cke(rd ^ wr), .rew(rd), .q(fill_level), .zq(fifo_empty), .level1(fifo_full), .rst(rst), .clk(clk));
endmodule
// Intended use is two small FIFOs (RX and TX typically) in one FPGA RAM resource
// RAM is supposed to be larger than the two FIFOs
// LFSR counters used adr pointers
module vl_fifo_2r2w_sync_simplex (
    // a side
    a_d, a_wr, a_fifo_full,
    a_q, a_rd, a_fifo_empty,
    a_fill_level,
    // b side
    b_d, b_wr, b_fifo_full,
    b_q, b_rd, b_fifo_empty,
    b_fill_level,
    // common
    clk, rst
    );
parameter data_width = 8;
parameter addr_width = 5;
parameter fifo_full_level = (1<<addr_width)-1;
// a side
input  [data_width-1:0] a_d;
input                   a_wr;
output                  a_fifo_full;
output [data_width-1:0] a_q;
input                   a_rd;
output                  a_fifo_empty;
output [addr_width-1:0] a_fill_level;
// b side
input  [data_width-1:0] b_d;
input                   b_wr;
output                  b_fifo_full;
output [data_width-1:0] b_q;
input                   b_rd;
output                  b_fifo_empty;
output [addr_width-1:0] b_fill_level;
input                   clk;
input                   rst;
// adr_gen
wire [addr_width:1] a_wadr, a_radr;
wire [addr_width:1] b_wadr, b_radr;
// dpram
wire [addr_width:0] a_dpram_adr, b_dpram_adr;
vl_cnt_lfsr_ce
    # ( .length(addr_width))
    fifo_a_wr_adr( .cke(a_wr), .q(a_wadr), .rst(rst), .clk(clk));
vl_cnt_lfsr_ce
    # (.length(addr_width))
    fifo_a_rd_adr( .cke(a_rd), .q(a_radr), .rst(rst), .clk(clk));
vl_cnt_lfsr_ce
    # ( .length(addr_width))
    fifo_b_wr_adr( .cke(b_wr), .q(b_wadr), .rst(rst), .clk(clk));
vl_cnt_lfsr_ce
    # (.length(addr_width))
    fifo_b_rd_adr( .cke(b_rd), .q(b_radr), .rst(rst), .clk(clk));
// mux read or write adr to DPRAM
assign a_dpram_adr = (a_wr) ? {1'b0,a_wadr} : {1'b1,a_radr};
assign b_dpram_adr = (b_wr) ? {1'b1,b_wadr} : {1'b0,b_radr};
vl_dpram_2r2w
    # (.data_width(data_width), .addr_width(addr_width+1))
    dpram ( .d_a(a_d), .q_a(a_q), .adr_a(a_dpram_adr), .we_a(a_wr), .clk_a(a_clk),
            .d_b(b_d), .q_b(b_q), .adr_b(b_dpram_adr), .we_b(b_wr), .clk_b(b_clk));
vl_cnt_bin_ce_rew_zq_l1
    # (.length(addr_width), .level1_value(fifo_full_level))
    a_fill_level_cnt( .cke(a_rd ^ a_wr), .rew(a_rd), .q(a_fill_level), .zq(a_fifo_empty), .level1(a_fifo_full), .rst(rst), .clk(clk));
vl_cnt_bin_ce_rew_zq_l1
    # (.length(addr_width), .level1_value(fifo_full_level))
    b_fill_level_cnt( .cke(b_rd ^ b_wr), .rew(b_rd), .q(b_fill_level), .zq(b_fifo_empty), .level1(b_fifo_full), .rst(rst), .clk(clk));
endmodule
module vl_fifo_cmp_async ( wptr, rptr, fifo_empty, fifo_full, wclk, rclk, rst );
   parameter addr_width = 4;
   parameter N = addr_width-1;
   parameter Q1 = 2'b00;
   parameter Q2 = 2'b01;
   parameter Q3 = 2'b11;
   parameter Q4 = 2'b10;
   parameter going_empty = 1'b0;
   parameter going_full  = 1'b1;
   input [N:0]  wptr, rptr;
   output       fifo_empty;
   output       fifo_full;
   input        wclk, rclk, rst;
   wire direction;
   reg  direction_set, direction_clr;
   wire async_empty, async_full;
   wire fifo_full2;
   wire fifo_empty2;
   // direction_set
   always @ (wptr[N:N-1] or rptr[N:N-1])
     case ({wptr[N:N-1],rptr[N:N-1]})
       {Q1,Q2} : direction_set <= 1'b1;
       {Q2,Q3} : direction_set <= 1'b1;
       {Q3,Q4} : direction_set <= 1'b1;
       {Q4,Q1} : direction_set <= 1'b1;
       default : direction_set <= 1'b0;
     endcase
   // direction_clear
   always @ (wptr[N:N-1] or rptr[N:N-1] or rst)
     if (rst)
       direction_clr <= 1'b1;
     else
       case ({wptr[N:N-1],rptr[N:N-1]})
         {Q2,Q1} : direction_clr <= 1'b1;
         {Q3,Q2} : direction_clr <= 1'b1;
         {Q4,Q3} : direction_clr <= 1'b1;
         {Q1,Q4} : direction_clr <= 1'b1;
         default : direction_clr <= 1'b0;
       endcase
    vl_dff_sr dff_sr_dir( .aclr(direction_clr), .aset(direction_set), .clock(1'b1), .data(1'b1), .q(direction));
   assign async_empty = (wptr == rptr) && (direction==going_empty);
   assign async_full  = (wptr == rptr) && (direction==going_full);
    vl_dff_sr dff_sr_empty0( .aclr(rst), .aset(async_full), .clock(wclk), .data(async_full), .q(fifo_full2));
    vl_dff_sr dff_sr_empty1( .aclr(rst), .aset(async_full), .clock(wclk), .data(fifo_full2), .q(fifo_full));
/*
   always @ (posedge wclk or posedge rst or posedge async_full)
     if (rst)
       {fifo_full, fifo_full2} <= 2'b00;
     else if (async_full)
       {fifo_full, fifo_full2} <= 2'b11;
     else
       {fifo_full, fifo_full2} <= {fifo_full2, async_full};
*/
/*   always @ (posedge rclk or posedge async_empty)
     if (async_empty)
       {fifo_empty, fifo_empty2} <= 2'b11;
     else
       {fifo_empty,fifo_empty2} <= {fifo_empty2,async_empty}; */
    vl_dff # ( .reset_value(1'b1)) dff0 ( .d(async_empty), .q(fifo_empty2), .clk(rclk), .rst(async_empty));
    vl_dff # ( .reset_value(1'b1)) dff1 ( .d(fifo_empty2), .q(fifo_empty),  .clk(rclk), .rst(async_empty));
endmodule // async_compb
module vl_fifo_1r1w_async (
    d, wr, fifo_full, wr_clk, wr_rst,
    q, rd, fifo_empty, rd_clk, rd_rst
    );
parameter data_width = 18;
parameter addr_width = 4;
// write side
input  [data_width-1:0] d;
input                   wr;
output                  fifo_full;
input                   wr_clk;
input                   wr_rst;
// read side
output [data_width-1:0] q;
input                   rd;
output                  fifo_empty;
input                   rd_clk;
input                   rd_rst;
wire [addr_width:1] wadr, wadr_bin, radr, radr_bin;
vl_cnt_gray_ce_bin
    # ( .length(addr_width))
    fifo_wr_adr( .cke(wr), .q(wadr), .q_bin(wadr_bin), .rst(wr_rst), .clk(wr_clk));
vl_cnt_gray_ce_bin
    # (.length(addr_width))
    fifo_rd_adr( .cke(rd), .q(radr), .q_bin(radr_bin), .rst(rd_rst), .clk(rd_clk));
vl_dpram_1r1w
    # (.data_width(data_width), .addr_width(addr_width))
    dpram ( .d_a(d), .adr_a(wadr_bin), .we_a(wr), .clk_a(wr_clk), .q_b(q), .adr_b(radr_bin), .clk_b(rd_clk));
vl_fifo_cmp_async
    # (.addr_width(addr_width))
    cmp ( .wptr(wadr), .rptr(radr), .fifo_empty(fifo_empty), .fifo_full(fifo_full), .wclk(wr_clk), .rclk(rd_clk), .rst(wr_rst) );
endmodule
module vl_fifo_2r2w_async (
    // a side
    a_d, a_wr, a_fifo_full,
    a_q, a_rd, a_fifo_empty,
    a_clk, a_rst,
    // b side
    b_d, b_wr, b_fifo_full,
    b_q, b_rd, b_fifo_empty,
    b_clk, b_rst
    );
parameter data_width = 18;
parameter addr_width = 4;
// a side
input  [data_width-1:0] a_d;
input                   a_wr;
output                  a_fifo_full;
output [data_width-1:0] a_q;
input                   a_rd;
output                  a_fifo_empty;
input                   a_clk;
input                   a_rst;
// b side
input  [data_width-1:0] b_d;
input                   b_wr;
output                  b_fifo_full;
output [data_width-1:0] b_q;
input                   b_rd;
output                  b_fifo_empty;
input                   b_clk;
input                   b_rst;
vl_fifo_1r1w_async # (.data_width(data_width), .addr_width(addr_width))
vl_fifo_1r1w_async_a (
    .d(a_d), .wr(a_wr), .fifo_full(a_fifo_full), .wr_clk(a_clk), .wr_rst(a_rst),
    .q(b_q), .rd(b_rd), .fifo_empty(b_fifo_empty), .rd_clk(b_clk), .rd_rst(b_rst)
    );
vl_fifo_1r1w_async # (.data_width(data_width), .addr_width(addr_width))
vl_fifo_1r1w_async_b (
    .d(b_d), .wr(b_wr), .fifo_full(b_fifo_full), .wr_clk(b_clk), .wr_rst(b_rst),
    .q(a_q), .rd(a_rd), .fifo_empty(a_fifo_empty), .rd_clk(a_clk), .rd_rst(a_rst)
    );
endmodule
module vl_fifo_2r2w_async_simplex (
    // a side
    a_d, a_wr, a_fifo_full,
    a_q, a_rd, a_fifo_empty,
    a_clk, a_rst,
    // b side
    b_d, b_wr, b_fifo_full,
    b_q, b_rd, b_fifo_empty,
    b_clk, b_rst
    );
parameter data_width = 18;
parameter addr_width = 4;
// a side
input  [data_width-1:0] a_d;
input                   a_wr;
output                  a_fifo_full;
output [data_width-1:0] a_q;
input                   a_rd;
output                  a_fifo_empty;
input                   a_clk;
input                   a_rst;
// b side
input  [data_width-1:0] b_d;
input                   b_wr;
output                  b_fifo_full;
output [data_width-1:0] b_q;
input                   b_rd;
output                  b_fifo_empty;
input                   b_clk;
input                   b_rst;
// adr_gen
wire [addr_width:1] a_wadr, a_wadr_bin, a_radr, a_radr_bin;
wire [addr_width:1] b_wadr, b_wadr_bin, b_radr, b_radr_bin;
// dpram
wire [addr_width:0] a_dpram_adr, b_dpram_adr;
vl_cnt_gray_ce_bin
    # ( .length(addr_width))
    fifo_a_wr_adr( .cke(a_wr), .q(a_wadr), .q_bin(a_wadr_bin), .rst(a_rst), .clk(a_clk));
vl_cnt_gray_ce_bin
    # (.length(addr_width))
    fifo_a_rd_adr( .cke(a_rd), .q(a_radr), .q_bin(a_radr_bin), .rst(a_rst), .clk(a_clk));
vl_cnt_gray_ce_bin
    # ( .length(addr_width))
    fifo_b_wr_adr( .cke(b_wr), .q(b_wadr), .q_bin(b_wadr_bin), .rst(b_rst), .clk(b_clk));
vl_cnt_gray_ce_bin
    # (.length(addr_width))
    fifo_b_rd_adr( .cke(b_rd), .q(b_radr), .q_bin(b_radr_bin), .rst(b_rst), .clk(b_clk));
// mux read or write adr to DPRAM
assign a_dpram_adr = (a_wr) ? {1'b0,a_wadr_bin} : {1'b1,a_radr_bin};
assign b_dpram_adr = (b_wr) ? {1'b1,b_wadr_bin} : {1'b0,b_radr_bin};
vl_dpram_2r2w
    # (.data_width(data_width), .addr_width(addr_width+1))
    dpram ( .d_a(a_d), .q_a(a_q), .adr_a(a_dpram_adr), .we_a(a_wr), .clk_a(a_clk),
            .d_b(b_d), .q_b(b_q), .adr_b(b_dpram_adr), .we_b(b_wr), .clk_b(b_clk));
vl_fifo_cmp_async
    # (.addr_width(addr_width))
    cmp1 ( .wptr(a_wadr), .rptr(b_radr), .fifo_empty(b_fifo_empty), .fifo_full(a_fifo_full), .wclk(a_clk), .rclk(b_clk), .rst(a_rst) );
vl_fifo_cmp_async
    # (.addr_width(addr_width))
    cmp2 ( .wptr(b_wadr), .rptr(a_radr), .fifo_empty(a_fifo_empty), .fifo_full(b_fifo_full), .wclk(b_clk), .rclk(a_clk), .rst(b_rst) );
endmodule
module vl_reg_file (
    a1, a2, a3, wd3, we3, rd1, rd2, clk
);
parameter data_width = 32;
parameter addr_width = 5;
input [addr_width-1:0] a1, a2, a3;
input [data_width-1:0] wd3;
input we3;
output [data_width-1:0] rd1, rd2;
input clk;
vl_dpram_1r1w
    # ( .data_width(data_width), .addr_width(addr_width))
    ram1 (
        .d_a(wd3),
        .adr_a(a3),
        .we_a(we3),
        .clk_a(clk),
        .q_b(rd1),
        .adr_b(a1),
        .clk_b(clk) );
vl_dpram_1r1w
    # ( .data_width(data_width), .addr_width(addr_width))
    ram2 (
        .d_a(wd3),
        .adr_a(a3),
        .we_a(we3),
        .clk_a(clk),
        .q_b(rd2),
        .adr_b(a2),
        .clk_b(clk) );
endmodule
//////////////////////////////////////////////////////////////////////
////                                                              ////
////  Versatile library, wishbone stuff                           ////
////                                                              ////
////  Description                                                 ////
////  Wishbone compliant modules                                  ////
////                                                              ////
////                                                              ////
////  To Do:                                                      ////
////   -                                                          ////
////                                                              ////
////  Author(s):                                                  ////
////      - Michael Unneback, unneback@opencores.org              ////
////        ORSoC AB                                              ////
////                                                              ////
//////////////////////////////////////////////////////////////////////
////                                                              ////
//// Copyright (C) 2010 Authors and OPENCORES.ORG                 ////
////                                                              ////
//// This source file may be used and distributed without         ////
//// restriction provided that this copyright statement is not    ////
//// removed from the file and that any derivative work contains  ////
//// the original copyright notice and the associated disclaimer. ////
////                                                              ////
//// This source file 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 2.1 of the License, or (at your option) any   ////
//// later version.                                               ////
////                                                              ////
//// This source 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 this source; if not, download it   ////
//// from http://www.opencores.org/lgpl.shtml                     ////
////                                                              ////
//////////////////////////////////////////////////////////////////////
`timescale 1ns/1ns
module vl_wb_adr_inc ( cyc_i, stb_i, cti_i, bte_i, adr_i, we_i, ack_o, adr_o, clk, rst);
parameter adr_width = 10;
parameter max_burst_width = 4;
input cyc_i, stb_i, we_i;
input [2:0] cti_i;
input [1:0] bte_i;
input [adr_width-1:0] adr_i;
output [adr_width-1:0] adr_o;
output ack_o;
input clk, rst;
reg [adr_width-1:0] adr;
wire [max_burst_width-1:0]

Line No.	Rev	Author	Line
1	60	unneback	`// default SYN_KEEP definition`
2	136	unneback	`///////////////////////////////////////`
3			`// dependencies`
4			`///////////////////////////////////////`
5	97	unneback	`// size to width`
6	6	unneback	`//////////////////////////////////////////////////////////////////////`
7			`//// ////`
8			`//// Versatile library, clock and reset ////`
9			`//// ////`
10			`//// Description ////`
11			`//// Logic related to clock and reset ////`
12			`//// ////`
13			`//// ////`
14			`//// To Do: ////`
15			`//// - add more different registers ////`
16			`//// ////`
17			`//// Author(s): ////`
18			`//// - Michael Unneback, unneback@opencores.org ////`
19			`//// ORSoC AB ////`
20			`//// ////`
21			`//////////////////////////////////////////////////////////////////////`
22			`//// ////`
23			`//// Copyright (C) 2010 Authors and OPENCORES.ORG ////`
24			`//// ////`
25			`//// This source file may be used and distributed without ////`
26			`//// restriction provided that this copyright statement is not ////`
27			`//// removed from the file and that any derivative work contains ////`
28			`//// the original copyright notice and the associated disclaimer. ////`
29			`//// ////`
30			`//// This source file is free software; you can redistribute it ////`
31			`//// and/or modify it under the terms of the GNU Lesser General ////`
32			`//// Public License as published by the Free Software Foundation; ////`
33			`//// either version 2.1 of the License, or (at your option) any ////`
34			`//// later version. ////`
35			`//// ////`
36			`//// This source is distributed in the hope that it will be ////`
37			`//// useful, but WITHOUT ANY WARRANTY; without even the implied ////`
38			`//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR ////`
39			`//// PURPOSE. See the GNU Lesser General Public License for more ////`
40			`//// details. ////`
41			`//// ////`
42			`//// You should have received a copy of the GNU Lesser General ////`
43			`//// Public License along with this source; if not, download it ////`
44			`//// from http://www.opencores.org/lgpl.shtml ////`
45			`//// ////`
46			`//////////////////////////////////////////////////////////////////////`
47	21	unneback	`//altera`
48	33	unneback	`module vl_gbuf ( i, o);`
49			`input i;`
50			`output o;`
51			`assign o = i;`
52			`endmodule`
53	6	unneback	`// ALTERA`
54			`//ACTEL`
55			`// sync reset`
56	17	unneback	`// input active lo async reset, normally from external reset generator and/or switch`
57	6	unneback	`// output active high global reset sync with two DFFs`
58			`timescale 1 ns/100 ps
59			`module vl_sync_rst ( rst_n_i, rst_o, clk);`
60			`input rst_n_i, clk;`
61			`output rst_o;`
62	18	unneback	`reg [1:0] tmp;`
63	6	unneback	`always @ (posedge clk or negedge rst_n_i)`
64			`if (!rst_n_i)`
65	17	unneback	`tmp <= 2'b11;`
66	6	unneback	`else`
67	33	unneback	`tmp <= {1'b0,tmp[1]};`
68	17	unneback	`vl_gbuf buf_i0( .i(tmp[0]), .o(rst_o));`
69	6	unneback	`endmodule`
70			`// vl_pll`
71	32	unneback	`///////////////////////////////////////////////////////////////////////////////`
72			`timescale 1 ps/1 ps
73			`module vl_pll ( clk_i, rst_n_i, lock, clk_o, rst_o);`
74			`parameter index = 0;`
75			`parameter number_of_clk = 1;`
76			`parameter period_time_0 = 20000;`
77			`parameter period_time_1 = 20000;`
78			`parameter period_time_2 = 20000;`
79			`parameter period_time_3 = 20000;`
80			`parameter period_time_4 = 20000;`
81			`parameter lock_delay = 2000000;`
82			`input clk_i, rst_n_i;`
83			`output lock;`
84			`output reg [0:number_of_clk-1] clk_o;`
85			`output [0:number_of_clk-1] rst_o;`
86	33	unneback	`ifdef SIM_PLL
87	32	unneback	`always`
88			`#((period_time_0)/2) clk_o[0] <= (!rst_n_i) ? 0 : ~clk_o[0];`
89			`generate if (number_of_clk > 1)`
90			`always`
91			`#((period_time_1)/2) clk_o[1] <= (!rst_n_i) ? 0 : ~clk_o[1];`
92			`endgenerate`
93			`generate if (number_of_clk > 2)`
94			`always`
95			`#((period_time_2)/2) clk_o[2] <= (!rst_n_i) ? 0 : ~clk_o[2];`
96			`endgenerate`
97	33	unneback	`generate if (number_of_clk > 3)`
98	32	unneback	`always`
99			`#((period_time_3)/2) clk_o[3] <= (!rst_n_i) ? 0 : ~clk_o[3];`
100			`endgenerate`
101	33	unneback	`generate if (number_of_clk > 4)`
102	32	unneback	`always`
103			`#((period_time_4)/2) clk_o[4] <= (!rst_n_i) ? 0 : ~clk_o[4];`
104			`endgenerate`
105			`genvar i;`
106			`generate for (i=0;i<number_of_clk;i=i+1) begin: clock`
107			`vl_sync_rst rst_i0 ( .rst_n_i(rst_n_i \| lock), .rst_o(rst_o[i]), .clk(clk_o[i]));`
108			`end`
109			`endgenerate`
110	33	unneback	`//assign #lock_delay lock = rst_n_i;`
111			`assign lock = rst_n_i;`
112	32	unneback	`endmodule`
113	33	unneback	`else
114			`ifdef VL_PLL0
115			`ifdef VL_PLL0_CLK1
116			`pll0 pll0_i0 (.areset(rst_n_i), .inclk0(clk_i), .locked(lock), .c0(clk_o[0]));`
117			`endif
118			`ifdef VL_PLL0_CLK2
119			`pll0 pll0_i0 (.areset(rst_n_i), .inclk0(clk_i), .locked(lock), .c0(clk_o[0]), .c1(clk_o[1]));`
120			`endif
121			`ifdef VL_PLL0_CLK3
122			`pll0 pll0_i0 (.areset(rst_n_i), .inclk0(clk_i), .locked(lock), .c0(clk_o[0]), .c1(clk_o[1]), .c2(clk_o[2]));`
123			`endif
124			`ifdef VL_PLL0_CLK4
125			`pll0 pll0_i0 (.areset(rst_n_i), .inclk0(clk_i), .locked(lock), .c0(clk_o[0]), .c1(clk_o[1]), .c2(clk_o[2]), .c3(clk_o[3]));`
126			`endif
127			`ifdef VL_PLL0_CLK5
128			`pll0 pll0_i0 (.areset(rst_n_i), .inclk0(clk_i), .locked(lock), .c0(clk_o[0]), .c1(clk_o[1]), .c2(clk_o[2]), .c3(clk_o[3]), .c4(clk_o[4]));`
129			`endif
130			`endif
131			`ifdef VL_PLL1
132			`ifdef VL_PLL1_CLK1
133			`pll1 pll1_i0 (.areset(rst_n_i), .inclk0(clk_i), .locked(lock), .c0(clk_o[0]));`
134			`endif
135			`ifdef VL_PLL1_CLK2
136			`pll1 pll1_i0 (.areset(rst_n_i), .inclk0(clk_i), .locked(lock), .c0(clk_o[0]), .c1(clk_o[1]));`
137			`endif
138			`ifdef VL_PLL1_CLK3
139			`pll1 pll1_i0 (.areset(rst_n_i), .inclk0(clk_i), .locked(lock), .c0(clk_o[0]), .c1(clk_o[1]), .c2(clk_o[2]));`
140			`endif
141			`ifdef VL_PLL1_CLK4
142			`pll1 pll1_i0 (.areset(rst_n_i), .inclk0(clk_i), .locked(lock), .c0(clk_o[0]), .c1(clk_o[1]), .c2(clk_o[2]), .c3(clk_o[3]));`
143			`endif
144			`ifdef VL_PLL1_CLK5
145			`pll1 pll1_i0 (.areset(rst_n_i), .inclk0(clk_i), .locked(lock), .c0(clk_o[0]), .c1(clk_o[1]), .c2(clk_o[2]), .c3(clk_o[3]), .c4(clk_o[4]));`
146			`endif
147			`endif
148			`ifdef VL_PLL2
149			`ifdef VL_PLL2_CLK1
150			`pll2 pll2_i0 (.areset(rst_n_i), .inclk0(clk_i), .locked(lock), .c0(clk_o[0]));`
151			`endif
152			`ifdef VL_PLL2_CLK2
153			`pll2 pll2_i0 (.areset(rst_n_i), .inclk0(clk_i), .locked(lock), .c0(clk_o[0]), .c1(clk_o[1]));`
154			`endif
155			`ifdef VL_PLL2_CLK3
156			`pll2 pll2_i0 (.areset(rst_n_i), .inclk0(clk_i), .locked(lock), .c0(clk_o[0]), .c1(clk_o[1]), .c2(clk_o[2]));`
157			`endif
158			`ifdef VL_PLL2_CLK4
159			`pll2 pll2_i0 (.areset(rst_n_i), .inclk0(clk_i), .locked(lock), .c0(clk_o[0]), .c1(clk_o[1]), .c2(clk_o[2]), .c3(clk_o[3]));`
160			`endif
161			`ifdef VL_PLL2_CLK5
162			`pll2 pll2_i0 (.areset(rst_n_i), .inclk0(clk_i), .locked(lock), .c0(clk_o[0]), .c1(clk_o[1]), .c2(clk_o[2]), .c3(clk_o[3]), .c4(clk_o[4]));`
163			`endif
164			`endif
165			`ifdef VL_PLL3
166			`ifdef VL_PLL3_CLK1
167			`pll3 pll3_i0 (.areset(rst_n_i), .inclk0(clk_i), .locked(lock), .c0(clk_o[0]));`
168			`endif
169			`ifdef VL_PLL3_CLK2
170			`pll3 pll3_i0 (.areset(rst_n_i), .inclk0(clk_i), .locked(lock), .c0(clk_o[0]), .c1(clk_o[1]));`
171			`endif
172			`ifdef VL_PLL3_CLK3
173			`pll3 pll3_i0 (.areset(rst_n_i), .inclk0(clk_i), .locked(lock), .c0(clk_o[0]), .c1(clk_o[1]), .c2(clk_o[2]));`
174			`endif
175			`ifdef VL_PLL3_CLK4
176			`pll3 pll3_i0 (.areset(rst_n_i), .inclk0(clk_i), .locked(lock), .c0(clk_o[0]), .c1(clk_o[1]), .c2(clk_o[2]), .c3(clk_o[3]));`
177			`endif
178			`ifdef VL_PLL3_CLK5
179			`pll3 pll3_i0 (.areset(rst_n_i), .inclk0(clk_i), .locked(lock), .c0(clk_o[0]), .c1(clk_o[1]), .c2(clk_o[2]), .c3(clk_o[3]), .c4(clk_o[4]));`
180			`endif
181			`endif
182	32	unneback	`genvar i;`
183			`generate for (i=0;i<number_of_clk;i=i+1) begin: clock`
184	40	unneback	`vl_sync_rst rst_i0 ( .rst_n_i(rst_n_i \| lock), .rst_o(rst_o[i]), .clk(clk_o[i]));`
185	32	unneback	`end`
186			`endgenerate`
187			`endmodule`
188	33	unneback	`endif
189	32	unneback	`///////////////////////////////////////////////////////////////////////////////`
190	6	unneback	`//altera`
191			`//actel`
192			`//////////////////////////////////////////////////////////////////////`
193			`//// ////`
194			`//// Versatile library, registers ////`
195			`//// ////`
196			`//// Description ////`
197			`//// Different type of registers ////`
198			`//// ////`
199			`//// ////`
200			`//// To Do: ////`
201			`//// - add more different registers ////`
202			`//// ////`
203			`//// Author(s): ////`
204			`//// - Michael Unneback, unneback@opencores.org ////`
205			`//// ORSoC AB ////`
206			`//// ////`
207			`//////////////////////////////////////////////////////////////////////`
208			`//// ////`
209			`//// Copyright (C) 2010 Authors and OPENCORES.ORG ////`
210			`//// ////`
211			`//// This source file may be used and distributed without ////`
212			`//// restriction provided that this copyright statement is not ////`
213			`//// removed from the file and that any derivative work contains ////`
214			`//// the original copyright notice and the associated disclaimer. ////`
215			`//// ////`
216			`//// This source file is free software; you can redistribute it ////`
217			`//// and/or modify it under the terms of the GNU Lesser General ////`
218			`//// Public License as published by the Free Software Foundation; ////`
219			`//// either version 2.1 of the License, or (at your option) any ////`
220			`//// later version. ////`
221			`//// ////`
222			`//// This source is distributed in the hope that it will be ////`
223			`//// useful, but WITHOUT ANY WARRANTY; without even the implied ////`
224			`//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR ////`
225			`//// PURPOSE. See the GNU Lesser General Public License for more ////`
226			`//// details. ////`
227			`//// ////`
228			`//// You should have received a copy of the GNU Lesser General ////`
229			`//// Public License along with this source; if not, download it ////`
230			`//// from http://www.opencores.org/lgpl.shtml ////`
231			`//// ////`
232			`//////////////////////////////////////////////////////////////////////`
233	18	unneback	`module vl_dff ( d, q, clk, rst);`
234	6	unneback	`parameter width = 1;`
235			`parameter reset_value = 0;`
236			`input [width-1:0] d;`
237			`input clk, rst;`
238			`output reg [width-1:0] q;`
239			`always @ (posedge clk or posedge rst)`
240			`if (rst)`
241			`q <= reset_value;`
242			`else`
243			`q <= d;`
244			`endmodule`
245	18	unneback	`module vl_dff_array ( d, q, clk, rst);`
246	6	unneback	`parameter width = 1;`
247			`parameter depth = 2;`
248			`parameter reset_value = 1'b0;`
249			`input [width-1:0] d;`
250			`input clk, rst;`
251			`output [width-1:0] q;`
252			`reg [0:depth-1] q_tmp [width-1:0];`
253			`integer i;`
254			`always @ (posedge clk or posedge rst)`
255			`if (rst) begin`
256			`for (i=0;i<depth;i=i+1)`
257			`q_tmp[i] <= {width{reset_value}};`
258			`end else begin`
259			`q_tmp[0] <= d;`
260			`for (i=1;i<depth;i=i+1)`
261			`q_tmp[i] <= q_tmp[i-1];`
262			`end`
263			`assign q = q_tmp[depth-1];`
264			`endmodule`
265	18	unneback	`module vl_dff_ce ( d, ce, q, clk, rst);`
266	6	unneback	`parameter width = 1;`
267			`parameter reset_value = 0;`
268			`input [width-1:0] d;`
269			`input ce, clk, rst;`
270			`output reg [width-1:0] q;`
271			`always @ (posedge clk or posedge rst)`
272			`if (rst)`
273			`q <= reset_value;`
274			`else`
275			`if (ce)`
276			`q <= d;`
277			`endmodule`
278	18	unneback	`module vl_dff_ce_clear ( d, ce, clear, q, clk, rst);`
279	8	unneback	`parameter width = 1;`
280			`parameter reset_value = 0;`
281			`input [width-1:0] d;`
282	10	unneback	`input ce, clear, clk, rst;`
283	8	unneback	`output reg [width-1:0] q;`
284			`always @ (posedge clk or posedge rst)`
285			`if (rst)`
286			`q <= reset_value;`
287			`else`
288			`if (ce)`
289			`if (clear)`
290			`q <= {width{1'b0}};`
291			`else`
292			`q <= d;`
293			`endmodule`
294	24	unneback	`module vl_dff_ce_set ( d, ce, set, q, clk, rst);`
295			`parameter width = 1;`
296			`parameter reset_value = 0;`
297			`input [width-1:0] d;`
298			`input ce, set, clk, rst;`
299			`output reg [width-1:0] q;`
300			`always @ (posedge clk or posedge rst)`
301			`if (rst)`
302			`q <= reset_value;`
303			`else`
304			`if (ce)`
305			`if (set)`
306			`q <= {width{1'b1}};`
307			`else`
308			`q <= d;`
309			`endmodule`
310	29	unneback	`module vl_spr ( sp, r, q, clk, rst);`
311	64	unneback	`//parameter width = 1;`
312			`parameter reset_value = 1'b0;`
313	29	unneback	`input sp, r;`
314			`output reg q;`
315			`input clk, rst;`
316			`always @ (posedge clk or posedge rst)`
317			`if (rst)`
318			`q <= reset_value;`
319			`else`
320			`if (sp)`
321			`q <= 1'b1;`
322			`else if (r)`
323			`q <= 1'b0;`
324			`endmodule`
325			`module vl_srp ( s, rp, q, clk, rst);`
326			`parameter width = 1;`
327			`parameter reset_value = 0;`
328			`input s, rp;`
329			`output reg q;`
330			`input clk, rst;`
331			`always @ (posedge clk or posedge rst)`
332			`if (rst)`
333			`q <= reset_value;`
334			`else`
335			`if (rp)`
336			`q <= 1'b0;`
337			`else if (s)`
338			`q <= 1'b1;`
339			`endmodule`
340	6	unneback	`// megafunction wizard: %LPM_FF%`
341			`// GENERATION: STANDARD`
342			`// VERSION: WM1.0`
343			`// MODULE: lpm_ff`
344			`// ============================================================`
345			`// File Name: dff_sr.v`
346			`// Megafunction Name(s):`
347			`// lpm_ff`
348			`//`
349			`// Simulation Library Files(s):`
350			`// lpm`
351			`// ============================================================`
352			`// ************************************************************`
353			`// THIS IS A WIZARD-GENERATED FILE. DO NOT EDIT THIS FILE!`
354			`//`
355			`// 9.1 Build 304 01/25/2010 SP 1 SJ Full Version`
356			`// ************************************************************`
357			`//Copyright (C) 1991-2010 Altera Corporation`
358			`//Your use of Altera Corporation's design tools, logic functions`
359			`//and other software and tools, and its AMPP partner logic`
360			`//functions, and any output files from any of the foregoing`
361			`//(including device programming or simulation files), and any`
362			`//associated documentation or information are expressly subject`
363			`//to the terms and conditions of the Altera Program License`
364			`//Subscription Agreement, Altera MegaCore Function License`
365			`//Agreement, or other applicable license agreement, including,`
366			`//without limitation, that your use is for the sole purpose of`
367			`//programming logic devices manufactured by Altera and sold by`
368			`//Altera or its authorized distributors. Please refer to the`
369			`//applicable agreement for further details.`
370			`// synopsys translate_off`
371			`timescale 1 ps / 1 ps
372			`// synopsys translate_on`
373	18	unneback	`module vl_dff_sr (`
374	6	unneback	`aclr,`
375			`aset,`
376			`clock,`
377			`data,`
378			`q);`
379			`input aclr;`
380			`input aset;`
381			`input clock;`
382			`input data;`
383			`output q;`
384			`wire [0:0] sub_wire0;`
385			`wire [0:0] sub_wire1 = sub_wire0[0:0];`
386			`wire q = sub_wire1;`
387			`wire sub_wire2 = data;`
388			`wire sub_wire3 = sub_wire2;`
389			`lpm_ff lpm_ff_component (`
390			`.aclr (aclr),`
391			`.clock (clock),`
392			`.data (sub_wire3),`
393			`.aset (aset),`
394			`.q (sub_wire0)`
395			`// synopsys translate_off`
396			`,`
397			`.aload (),`
398			`.enable (),`
399			`.sclr (),`
400			`.sload (),`
401			`.sset ()`
402			`// synopsys translate_on`
403			`);`
404			`defparam`
405			`lpm_ff_component.lpm_fftype = "DFF",`
406			`lpm_ff_component.lpm_type = "LPM_FF",`
407			`lpm_ff_component.lpm_width = 1;`
408			`endmodule`
409			`// ============================================================`
410			`// CNX file retrieval info`
411			`// ============================================================`
412			`// Retrieval info: PRIVATE: ACLR NUMERIC "1"`
413			`// Retrieval info: PRIVATE: ALOAD NUMERIC "0"`
414			`// Retrieval info: PRIVATE: ASET NUMERIC "1"`
415			`// Retrieval info: PRIVATE: ASET_ALL1 NUMERIC "1"`
416			`// Retrieval info: PRIVATE: CLK_EN NUMERIC "0"`
417			`// Retrieval info: PRIVATE: DFF NUMERIC "1"`
418			`// Retrieval info: PRIVATE: INTENDED_DEVICE_FAMILY STRING "Cyclone IV E"`
419			`// Retrieval info: PRIVATE: SCLR NUMERIC "0"`
420			`// Retrieval info: PRIVATE: SLOAD NUMERIC "0"`
421			`// Retrieval info: PRIVATE: SSET NUMERIC "0"`
422			`// Retrieval info: PRIVATE: SSET_ALL1 NUMERIC "1"`
423			`// Retrieval info: PRIVATE: SYNTH_WRAPPER_GEN_POSTFIX STRING "0"`
424			`// Retrieval info: PRIVATE: UseTFFdataPort NUMERIC "0"`
425			`// Retrieval info: PRIVATE: nBit NUMERIC "1"`
426			`// Retrieval info: CONSTANT: LPM_FFTYPE STRING "DFF"`
427			`// Retrieval info: CONSTANT: LPM_TYPE STRING "LPM_FF"`
428			`// Retrieval info: CONSTANT: LPM_WIDTH NUMERIC "1"`
429			`// Retrieval info: USED_PORT: aclr 0 0 0 0 INPUT NODEFVAL aclr`
430			`// Retrieval info: USED_PORT: aset 0 0 0 0 INPUT NODEFVAL aset`
431			`// Retrieval info: USED_PORT: clock 0 0 0 0 INPUT NODEFVAL clock`
432			`// Retrieval info: USED_PORT: data 0 0 0 0 INPUT NODEFVAL data`
433			`// Retrieval info: USED_PORT: q 0 0 0 0 OUTPUT NODEFVAL q`
434			`// Retrieval info: CONNECT: @clock 0 0 0 0 clock 0 0 0 0`
435			`// Retrieval info: CONNECT: q 0 0 0 0 @q 0 0 1 0`
436			`// Retrieval info: CONNECT: @aclr 0 0 0 0 aclr 0 0 0 0`
437			`// Retrieval info: CONNECT: @aset 0 0 0 0 aset 0 0 0 0`
438			`// Retrieval info: CONNECT: @data 0 0 1 0 data 0 0 0 0`
439			`// Retrieval info: LIBRARY: lpm lpm.lpm_components.all`
440			`// Retrieval info: GEN_FILE: TYPE_NORMAL dff_sr.v TRUE`
441			`// Retrieval info: GEN_FILE: TYPE_NORMAL dff_sr.inc FALSE`
442			`// Retrieval info: GEN_FILE: TYPE_NORMAL dff_sr.cmp FALSE`
443			`// Retrieval info: GEN_FILE: TYPE_NORMAL dff_sr.bsf FALSE`
444			`// Retrieval info: GEN_FILE: TYPE_NORMAL dff_sr_inst.v FALSE`
445			`// Retrieval info: GEN_FILE: TYPE_NORMAL dff_sr_bb.v FALSE`
446			`// Retrieval info: LIB_FILE: lpm`
447			`// LATCH`
448			`// For targtes not supporting LATCH use dff_sr with clk=1 and data=1`
449	18	unneback	`module vl_latch ( d, le, q, clk);`
450	6	unneback	`input d, le;`
451			`output q;`
452			`input clk;`
453			`dff_sr i0 (.aclr(), .aset(), .clock(1'b1), .data(1'b1), .q(q));`
454			`endmodule`
455	18	unneback	`module vl_shreg ( d, q, clk, rst);`
456	17	unneback	`parameter depth = 10;`
457			`input d;`
458			`output q;`
459			`input clk, rst;`
460			`reg [1:depth] dffs;`
461			`always @ (posedge clk or posedge rst)`
462			`if (rst)`
463			`dffs <= {depth{1'b0}};`
464			`else`
465			`dffs <= {d,dffs[1:depth-1]};`
466			`assign q = dffs[depth];`
467			`endmodule`
468	18	unneback	`module vl_shreg_ce ( d, ce, q, clk, rst);`
469	17	unneback	`parameter depth = 10;`
470			`input d, ce;`
471			`output q;`
472			`input clk, rst;`
473			`reg [1:depth] dffs;`
474			`always @ (posedge clk or posedge rst)`
475			`if (rst)`
476			`dffs <= {depth{1'b0}};`
477			`else`
478			`if (ce)`
479			`dffs <= {d,dffs[1:depth-1]};`
480			`assign q = dffs[depth];`
481			`endmodule`
482	18	unneback	`module vl_delay ( d, q, clk, rst);`
483	15	unneback	`parameter depth = 10;`
484			`input d;`
485			`output q;`
486			`input clk, rst;`
487			`reg [1:depth] dffs;`
488			`always @ (posedge clk or posedge rst)`
489			`if (rst)`
490			`dffs <= {depth{1'b0}};`
491			`else`
492			`dffs <= {d,dffs[1:depth-1]};`
493			`assign q = dffs[depth];`
494			`endmodule`
495	18	unneback	`module vl_delay_emptyflag ( d, q, emptyflag, clk, rst);`
496	17	unneback	`parameter depth = 10;`
497			`input d;`
498			`output q, emptyflag;`
499			`input clk, rst;`
500			`reg [1:depth] dffs;`

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