Remove old mac. Good riddance.

8 files changed, 0 insertions, 3582 deletions

diff --git a/eth/demo/verilog/RAMB16_S1_S2.v b/eth/demo/verilog/RAMB16_S1_S2.v
deleted file mode 100644
index 758760b95..000000000
--- a/eth/demo/verilog/RAMB16_S1_S2.v
+++ /dev/null
@@ -1,1535 +0,0 @@
-// $Header: /devl/xcs/repo/env/Databases/CAEInterfaces/verunilibs/data/unisims/RAMB16_S1_S2.v,v 1.10 2005/03/14 22:54:41 wloo Exp $
-///////////////////////////////////////////////////////////////////////////////
-// Copyright (c) 1995/2005 Xilinx, Inc.
-// All Right Reserved.
-///////////////////////////////////////////////////////////////////////////////
-//   ____  ____
-//  /   /\/   /
-// /___/  \  /    Vendor : Xilinx
-// \   \   \/     Version : 8.1i (I.13)
-//  \   \         Description : Xilinx Functional Simulation Library Component
-//  /   /                  16K-Bit Data and 2K-Bit Parity Dual Port Block RAM
-// /___/   /\     Filename : RAMB16_S1_S2.v
-// \   \  /  \    Timestamp : Thu Mar 10 16:43:35 PST 2005
-//  \___\/\___\
-//
-// Revision:
-//    03/23/04 - Initial version.
-// End Revision
-
-`ifdef legacy_model
-
-`timescale  1 ps / 1 ps
-
-module RAMB16_S1_S2 (DOA, DOB, ADDRA, ADDRB, CLKA, CLKB, DIA, DIB, ENA, ENB, SSRA, SSRB, WEA, WEB);
-
-    parameter INIT_A = 1'h0;
-    parameter INIT_B = 2'h0;
-    parameter SRVAL_A = 1'h0;
-    parameter SRVAL_B = 2'h0;
-    parameter WRITE_MODE_A = "WRITE_FIRST";
-    parameter WRITE_MODE_B = "WRITE_FIRST";
-    parameter SIM_COLLISION_CHECK = "ALL";
-    localparam SETUP_ALL = 1000;
-    localparam SETUP_READ_FIRST = 3000;
-
-    parameter INIT_00 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_01 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_02 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_03 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_04 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_05 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_06 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_07 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_08 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_09 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_0A = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_0B = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_0C = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_0D = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_0E = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_0F = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_10 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_11 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_12 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_13 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_14 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_15 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_16 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_17 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_18 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_19 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_1A = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_1B = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_1C = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_1D = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_1E = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_1F = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_20 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_21 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_22 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_23 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_24 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_25 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_26 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_27 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_28 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_29 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_2A = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_2B = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_2C = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_2D = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_2E = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_2F = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_30 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_31 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_32 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_33 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_34 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_35 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_36 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_37 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_38 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_39 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_3A = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_3B = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_3C = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_3D = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_3E = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_3F = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-
-    output [0:0] DOA;
-    reg [0:0] doa_out;
-    wire doa_out0;
-
-    input [13:0] ADDRA;
-    input [0:0] DIA;
-    input ENA, CLKA, WEA, SSRA;
-
-    output [1:0] DOB;
-    reg [1:0] dob_out;
-    wire dob_out0, dob_out1;
-
-    input [12:0] ADDRB;
-    input [1:0] DIB;
-    input ENB, CLKB, WEB, SSRB;
-
-    reg [18431:0] mem;
-    reg [8:0] count;
-    reg [1:0] wr_mode_a, wr_mode_b;
-
-    reg [5:0] dmi, dbi;
-    reg [5:0] pmi, pbi;
-
-    wire [13:0] addra_int;
-    reg [13:0] addra_reg;
-    wire [0:0] dia_int;
-    wire ena_int, clka_int, wea_int, ssra_int;
-    reg ena_reg, wea_reg, ssra_reg;
-    wire [12:0] addrb_int;
-    reg [12:0] addrb_reg;
-    wire [1:0] dib_int;
-    wire enb_int, clkb_int, web_int, ssrb_int;
-    reg display_flag;
-    reg enb_reg, web_reg, ssrb_reg;
-
-    time time_clka, time_clkb;
-    time time_clka_clkb;
-    time time_clkb_clka;
-
-    reg setup_all_a_b;
-    reg setup_all_b_a;
-    reg setup_zero;
-    reg setup_rf_a_b;
-    reg setup_rf_b_a;
-    reg [1:0] data_collision, data_collision_a_b, data_collision_b_a;
-    reg memory_collision, memory_collision_a_b, memory_collision_b_a;
-    reg address_collision, address_collision_a_b, address_collision_b_a;
-    reg change_clka;
-    reg change_clkb;
-
-    wire [14:0] data_addra_int;
-    wire [14:0] data_addra_reg;
-    wire [14:0] data_addrb_int;
-    wire [14:0] data_addrb_reg;
-    wire [15:0] parity_addra_int;
-    wire [15:0] parity_addra_reg;
-    wire [15:0] parity_addrb_int;
-    wire [15:0] parity_addrb_reg;
-
-    tri0 GSR = glbl.GSR;
-
-    always @(GSR)
-	if (GSR) begin
-	    assign doa_out = INIT_A[0:0];
-	    assign dob_out = INIT_B[1:0];
-	end
-	else begin
-	    deassign doa_out;
-	    deassign dob_out;
-	end
-
-    buf b_doa_out0 (doa_out0, doa_out[0]);
-    buf b_dob_out0 (dob_out0, dob_out[0]);
-    buf b_dob_out1 (dob_out1, dob_out[1]);
-
-    buf b_doa0 (DOA[0], doa_out0);
-    buf b_dob0 (DOB[0], dob_out0);
-    buf b_dob1 (DOB[1], dob_out1);
-
-    buf b_addra_0 (addra_int[0], ADDRA[0]);
-    buf b_addra_1 (addra_int[1], ADDRA[1]);
-    buf b_addra_2 (addra_int[2], ADDRA[2]);
-    buf b_addra_3 (addra_int[3], ADDRA[3]);
-    buf b_addra_4 (addra_int[4], ADDRA[4]);
-    buf b_addra_5 (addra_int[5], ADDRA[5]);
-    buf b_addra_6 (addra_int[6], ADDRA[6]);
-    buf b_addra_7 (addra_int[7], ADDRA[7]);
-    buf b_addra_8 (addra_int[8], ADDRA[8]);
-    buf b_addra_9 (addra_int[9], ADDRA[9]);
-    buf b_addra_10 (addra_int[10], ADDRA[10]);
-    buf b_addra_11 (addra_int[11], ADDRA[11]);
-    buf b_addra_12 (addra_int[12], ADDRA[12]);
-    buf b_addra_13 (addra_int[13], ADDRA[13]);
-    buf b_dia_0 (dia_int[0], DIA[0]);
-    buf b_ena (ena_int, ENA);
-    buf b_clka (clka_int, CLKA);
-    buf b_ssra (ssra_int, SSRA);
-    buf b_wea (wea_int, WEA);
-    buf b_addrb_0 (addrb_int[0], ADDRB[0]);
-    buf b_addrb_1 (addrb_int[1], ADDRB[1]);
-    buf b_addrb_2 (addrb_int[2], ADDRB[2]);
-    buf b_addrb_3 (addrb_int[3], ADDRB[3]);
-    buf b_addrb_4 (addrb_int[4], ADDRB[4]);
-    buf b_addrb_5 (addrb_int[5], ADDRB[5]);
-    buf b_addrb_6 (addrb_int[6], ADDRB[6]);
-    buf b_addrb_7 (addrb_int[7], ADDRB[7]);
-    buf b_addrb_8 (addrb_int[8], ADDRB[8]);
-    buf b_addrb_9 (addrb_int[9], ADDRB[9]);
-    buf b_addrb_10 (addrb_int[10], ADDRB[10]);
-    buf b_addrb_11 (addrb_int[11], ADDRB[11]);
-    buf b_addrb_12 (addrb_int[12], ADDRB[12]);
-    buf b_dib_0 (dib_int[0], DIB[0]);
-    buf b_dib_1 (dib_int[1], DIB[1]);
-    buf b_enb (enb_int, ENB);
-    buf b_clkb (clkb_int, CLKB);
-    buf b_ssrb (ssrb_int, SSRB);
-    buf b_web (web_int, WEB);
-
-    initial begin
-	for (count = 0; count < 256; count = count + 1) begin
-	    mem[count]		  <= INIT_00[count];
-	    mem[256 * 1 + count]  <= INIT_01[count];
-	    mem[256 * 2 + count]  <= INIT_02[count];
-	    mem[256 * 3 + count]  <= INIT_03[count];
-	    mem[256 * 4 + count]  <= INIT_04[count];
-	    mem[256 * 5 + count]  <= INIT_05[count];
-	    mem[256 * 6 + count]  <= INIT_06[count];
-	    mem[256 * 7 + count]  <= INIT_07[count];
-	    mem[256 * 8 + count]  <= INIT_08[count];
-	    mem[256 * 9 + count]  <= INIT_09[count];
-	    mem[256 * 10 + count] <= INIT_0A[count];
-	    mem[256 * 11 + count] <= INIT_0B[count];
-	    mem[256 * 12 + count] <= INIT_0C[count];
-	    mem[256 * 13 + count] <= INIT_0D[count];
-	    mem[256 * 14 + count] <= INIT_0E[count];
-	    mem[256 * 15 + count] <= INIT_0F[count];
-	    mem[256 * 16 + count] <= INIT_10[count];
-	    mem[256 * 17 + count] <= INIT_11[count];
-	    mem[256 * 18 + count] <= INIT_12[count];
-	    mem[256 * 19 + count] <= INIT_13[count];
-	    mem[256 * 20 + count] <= INIT_14[count];
-	    mem[256 * 21 + count] <= INIT_15[count];
-	    mem[256 * 22 + count] <= INIT_16[count];
-	    mem[256 * 23 + count] <= INIT_17[count];
-	    mem[256 * 24 + count] <= INIT_18[count];
-	    mem[256 * 25 + count] <= INIT_19[count];
-	    mem[256 * 26 + count] <= INIT_1A[count];
-	    mem[256 * 27 + count] <= INIT_1B[count];
-	    mem[256 * 28 + count] <= INIT_1C[count];
-	    mem[256 * 29 + count] <= INIT_1D[count];
-	    mem[256 * 30 + count] <= INIT_1E[count];
-	    mem[256 * 31 + count] <= INIT_1F[count];
-	    mem[256 * 32 + count] <= INIT_20[count];
-	    mem[256 * 33 + count] <= INIT_21[count];
-	    mem[256 * 34 + count] <= INIT_22[count];
-	    mem[256 * 35 + count] <= INIT_23[count];
-	    mem[256 * 36 + count] <= INIT_24[count];
-	    mem[256 * 37 + count] <= INIT_25[count];
-	    mem[256 * 38 + count] <= INIT_26[count];
-	    mem[256 * 39 + count] <= INIT_27[count];
-	    mem[256 * 40 + count] <= INIT_28[count];
-	    mem[256 * 41 + count] <= INIT_29[count];
-	    mem[256 * 42 + count] <= INIT_2A[count];
-	    mem[256 * 43 + count] <= INIT_2B[count];
-	    mem[256 * 44 + count] <= INIT_2C[count];
-	    mem[256 * 45 + count] <= INIT_2D[count];
-	    mem[256 * 46 + count] <= INIT_2E[count];
-	    mem[256 * 47 + count] <= INIT_2F[count];
-	    mem[256 * 48 + count] <= INIT_30[count];
-	    mem[256 * 49 + count] <= INIT_31[count];
-	    mem[256 * 50 + count] <= INIT_32[count];
-	    mem[256 * 51 + count] <= INIT_33[count];
-	    mem[256 * 52 + count] <= INIT_34[count];
-	    mem[256 * 53 + count] <= INIT_35[count];
-	    mem[256 * 54 + count] <= INIT_36[count];
-	    mem[256 * 55 + count] <= INIT_37[count];
-	    mem[256 * 56 + count] <= INIT_38[count];
-	    mem[256 * 57 + count] <= INIT_39[count];
-	    mem[256 * 58 + count] <= INIT_3A[count];
-	    mem[256 * 59 + count] <= INIT_3B[count];
-	    mem[256 * 60 + count] <= INIT_3C[count];
-	    mem[256 * 61 + count] <= INIT_3D[count];
-	    mem[256 * 62 + count] <= INIT_3E[count];
-	    mem[256 * 63 + count] <= INIT_3F[count];
-	end
-	address_collision <= 0;
-	address_collision_a_b <= 0;
-	address_collision_b_a <= 0;
-	change_clka <= 0;
-	change_clkb <= 0;
-	data_collision <= 0;
-	data_collision_a_b <= 0;
-	data_collision_b_a <= 0;
-	memory_collision <= 0;
-	memory_collision_a_b <= 0;
-	memory_collision_b_a <= 0;
-	setup_all_a_b <= 0;
-	setup_all_b_a <= 0;
-	setup_zero <= 0;
-	setup_rf_a_b <= 0;
-	setup_rf_b_a <= 0;
-    end
-
-    assign data_addra_int = addra_int * 1;
-    assign data_addra_reg = addra_reg * 1;
-    assign data_addrb_int = addrb_int * 2;
-    assign data_addrb_reg = addrb_reg * 2;
-
-
-    initial begin
-
-	display_flag = 1;
-
-	case (SIM_COLLISION_CHECK)
-
-	    "NONE" : begin
-		         assign setup_all_a_b = 1'b0;
-	                 assign setup_all_b_a = 1'b0;
-	                 assign setup_zero = 1'b0;
-	                 assign setup_rf_a_b = 1'b0;
-	                 assign setup_rf_b_a = 1'b0;
-	                 assign display_flag = 0;
-	             end
-	    "WARNING_ONLY" : begin
-		                 assign data_collision = 2'b00;
-	                         assign data_collision_a_b = 2'b00;
-	                         assign data_collision_b_a = 2'b00;
-	                         assign memory_collision = 1'b0;
-	                         assign memory_collision_a_b = 1'b0;
-	                         assign memory_collision_b_a = 1'b0;
-	                     end
-	    "GENERATE_X_ONLY" : begin
-		                    assign display_flag = 0;
-	                        end
-	    "ALL" : ;
-	    default : begin
-		          $display("Attribute Syntax Error : The Attribute SIM_COLLISION_CHECK on RAMB16_S1_S2 instance %m is set to %s.  Legal values for this attribute are ALL, NONE, WARNING_ONLY or GENERATE_X_ONLY.", SIM_COLLISION_CHECK);
-		          $finish;
-	              end
-
-	endcase // case(SIM_COLLISION_CHECK)
-
-    end // initial begin
-
-
-    always @(posedge clka_int) begin
-	time_clka = $time;
-	#0 time_clkb_clka = time_clka - time_clkb;
-	change_clka = ~change_clka;
-    end
-
-    always @(posedge clkb_int) begin
-	time_clkb = $time;
-	#0 time_clka_clkb = time_clkb - time_clka;
-	change_clkb = ~change_clkb;
-    end
-
-    always @(change_clkb) begin
-	if ((0 < time_clka_clkb) && (time_clka_clkb < SETUP_ALL))
-	    setup_all_a_b = 1;
-	if ((0 < time_clka_clkb) && (time_clka_clkb < SETUP_READ_FIRST))
-	    setup_rf_a_b = 1;
-    end
-
-    always @(change_clka) begin
-	if ((0 < time_clkb_clka) && (time_clkb_clka < SETUP_ALL))
-	    setup_all_b_a = 1;
-	if ((0 < time_clkb_clka) && (time_clkb_clka < SETUP_READ_FIRST))
-	    setup_rf_b_a = 1;
-    end
-
-    always @(change_clkb or change_clka) begin
-	if ((time_clkb_clka == 0) && (time_clka_clkb == 0))
-	    setup_zero = 1;
-    end
-
-    always @(posedge setup_zero) begin
-	if ((ena_int == 1) && (wea_int == 1) &&
-	    (enb_int == 1) && (web_int == 1) &&
-	    (data_addra_int[14:1] == data_addrb_int[14:1]))
-	    memory_collision <= 1;
-    end
-
-    always @(posedge setup_all_a_b or posedge setup_rf_a_b) begin
-	if ((ena_reg == 1) && (wea_reg == 1) &&
-	    (enb_int == 1) && (web_int == 1) &&
-	    (data_addra_reg[14:1] == data_addrb_int[14:1]))
-	    memory_collision_a_b <= 1;
-    end
-
-    always @(posedge setup_all_b_a or posedge setup_rf_b_a) begin
-	if ((ena_int == 1) && (wea_int == 1) &&
-	    (enb_reg == 1) && (web_reg == 1) &&
-	    (data_addra_int[14:1] == data_addrb_reg[14:1]))
-	    memory_collision_b_a <= 1;
-    end
-
-    always @(posedge setup_all_a_b) begin
-	if (data_addra_reg[14:1] == data_addrb_int[14:1]) begin
-	if ((ena_reg == 1) && (enb_int == 1)) begin
-	    case ({wr_mode_a, wr_mode_b, wea_reg, web_int})
-		6'b000011 : begin data_collision_a_b <= 2'b11; display_wa_wb; end
-		6'b000111 : begin data_collision_a_b <= 2'b11; display_wa_wb; end
-		6'b001011 : begin data_collision_a_b <= 2'b10; display_wa_wb; end
-//		6'b010011 : begin data_collision_a_b <= 2'b00; display_wa_wb; end
-//		6'b010111 : begin data_collision_a_b <= 2'b00; display_wa_wb; end
-//		6'b011011 : begin data_collision_a_b <= 2'b00; display_wa_wb; end
-		6'b100011 : begin data_collision_a_b <= 2'b01; display_wa_wb; end
-		6'b100111 : begin data_collision_a_b <= 2'b01; display_wa_wb; end
-		6'b101011 : begin display_wa_wb; end
-		6'b000001 : begin data_collision_a_b <= 2'b10; display_ra_wb; end
-//		6'b000101 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
-		6'b001001 : begin data_collision_a_b <= 2'b10; display_ra_wb; end
-		6'b010001 : begin data_collision_a_b <= 2'b10; display_ra_wb; end
-//		6'b010101 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
-		6'b011001 : begin data_collision_a_b <= 2'b10; display_ra_wb; end
-		6'b100001 : begin data_collision_a_b <= 2'b10; display_ra_wb; end
-//		6'b100101 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
-		6'b101001 : begin data_collision_a_b <= 2'b10; display_ra_wb; end
-		6'b000010 : begin data_collision_a_b <= 2'b01; display_wa_rb; end
-		6'b000110 : begin data_collision_a_b <= 2'b01; display_wa_rb; end
-		6'b001010 : begin data_collision_a_b <= 2'b01; display_wa_rb; end
-//		6'b010010 : begin data_collision_a_b <= 2'b00; display_wa_rb; end
-//		6'b010110 : begin data_collision_a_b <= 2'b00; display_wa_rb; end
-//		6'b011010 : begin data_collision_a_b <= 2'b00; display_wa_rb; end
-		6'b100010 : begin data_collision_a_b <= 2'b01; display_wa_rb; end
-		6'b100110 : begin data_collision_a_b <= 2'b01; display_wa_rb; end
-		6'b101010 : begin data_collision_a_b <= 2'b01; display_wa_rb; end
-	    endcase
-	end
-	end
-	setup_all_a_b <= 0;
-    end
-
-
-    always @(posedge setup_all_b_a) begin
-	if (data_addra_int[14:1] == data_addrb_reg[14:1]) begin
-	if ((ena_int == 1) && (enb_reg == 1)) begin
-	    case ({wr_mode_a, wr_mode_b, wea_int, web_reg})
-		6'b000011 : begin data_collision_b_a <= 2'b11; display_wa_wb; end
-//		6'b000111 : begin data_collision_b_a <= 2'b00; display_wa_wb; end
-		6'b001011 : begin data_collision_b_a <= 2'b10; display_wa_wb; end
-		6'b010011 : begin data_collision_b_a <= 2'b11; display_wa_wb; end
-//		6'b010111 : begin data_collision_b_a <= 2'b00; display_wa_wb; end
-		6'b011011 : begin data_collision_b_a <= 2'b10; display_wa_wb; end
-		6'b100011 : begin data_collision_b_a <= 2'b01; display_wa_wb; end
-		6'b100111 : begin data_collision_b_a <= 2'b01; display_wa_wb; end
-		6'b101011 : begin display_wa_wb; end
-		6'b000001 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
-		6'b000101 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
-		6'b001001 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
-		6'b010001 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
-		6'b010101 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
-		6'b011001 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
-		6'b100001 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
-		6'b100101 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
-		6'b101001 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
-		6'b000010 : begin data_collision_b_a <= 2'b01; display_wa_rb; end
-		6'b000110 : begin data_collision_b_a <= 2'b01; display_wa_rb; end
-		6'b001010 : begin data_collision_b_a <= 2'b01; display_wa_rb; end
-//		6'b010010 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
-//		6'b010110 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
-//		6'b011010 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
-		6'b100010 : begin data_collision_b_a <= 2'b01; display_wa_rb; end
-		6'b100110 : begin data_collision_b_a <= 2'b01; display_wa_rb; end
-		6'b101010 : begin data_collision_b_a <= 2'b01; display_wa_rb; end
-	    endcase
-	end
-	end
-	setup_all_b_a <= 0;
-    end
-
-
-    always @(posedge setup_zero) begin
-	if (data_addra_int[14:1] == data_addrb_int[14:1]) begin
-	if ((ena_int == 1) && (enb_int == 1)) begin
-	    case ({wr_mode_a, wr_mode_b, wea_int, web_int})
-		6'b000011 : begin data_collision <= 2'b11; display_wa_wb; end
-		6'b000111 : begin data_collision <= 2'b11; display_wa_wb; end
-		6'b001011 : begin data_collision <= 2'b10; display_wa_wb; end
-		6'b010011 : begin data_collision <= 2'b11; display_wa_wb; end
-		6'b010111 : begin data_collision <= 2'b11; display_wa_wb; end
-		6'b011011 : begin data_collision <= 2'b10; display_wa_wb; end
-		6'b100011 : begin data_collision <= 2'b01; display_wa_wb; end
-		6'b100111 : begin data_collision <= 2'b01; display_wa_wb; end
-		6'b101011 : begin display_wa_wb; end
-		6'b000001 : begin data_collision <= 2'b10; display_ra_wb; end
-//		6'b000101 : begin data_collision <= 2'b00; display_ra_wb; end
-		6'b001001 : begin data_collision <= 2'b10; display_ra_wb; end
-		6'b010001 : begin data_collision <= 2'b10; display_ra_wb; end
-//		6'b010101 : begin data_collision <= 2'b00; display_ra_wb; end
-		6'b011001 : begin data_collision <= 2'b10; display_ra_wb; end
-		6'b100001 : begin data_collision <= 2'b10; display_ra_wb; end
-//		6'b100101 : begin data_collision <= 2'b00; display_ra_wb; end
-		6'b101001 : begin data_collision <= 2'b10; display_ra_wb; end
-		6'b000010 : begin data_collision <= 2'b01; display_wa_rb; end
-		6'b000110 : begin data_collision <= 2'b01; display_wa_rb; end
-		6'b001010 : begin data_collision <= 2'b01; display_wa_rb; end
-//		6'b010010 : begin data_collision <= 2'b00; display_wa_rb; end
-//		6'b010110 : begin data_collision <= 2'b00; display_wa_rb; end
-//		6'b011010 : begin data_collision <= 2'b00; display_wa_rb; end
-		6'b100010 : begin data_collision <= 2'b01; display_wa_rb; end
-		6'b100110 : begin data_collision <= 2'b01; display_wa_rb; end
-		6'b101010 : begin data_collision <= 2'b01; display_wa_rb; end
-	    endcase
-	end
-	end
-	setup_zero <= 0;
-    end
-
-    task display_ra_wb;
-    begin
-	if (display_flag)
-        $display("Memory Collision Error on RAMB16_S1_S2:%m at simulation time %.3f ns\nA read was performed on address %h (hex) of Port A while a write was requested to the same address on Port B. The write will be successful however the read value on Port A is unknown until the next CLKA cycle.", $time/1000.0, addra_int);
-    end
-    endtask
-
-    task display_wa_rb;
-    begin
-	if (display_flag)
-        $display("Memory Collision Error on RAMB16_S1_S2:%m at simulation time %.3f ns\nA read was performed on address %h (hex) of Port B while a write was requested to the same address on Port A. The write will be successful however the read value on Port B is unknown until the next CLKB cycle.", $time/1000.0, addrb_int);
-    end
-    endtask
-
-    task display_wa_wb;
-    begin
-	if (display_flag)
-        $display("Memory Collision Error on RAMB16_S1_S2:%m at simulation time %.3f ns\nA write was requested to the same address simultaneously at both Port A and Port B of the RAM. The contents written to the RAM at address location %h (hex) of Port A and address location %h (hex) of Port B are unknown.", $time/1000.0, addra_int, addrb_int);
-    end
-    endtask
-
-
-    always @(posedge setup_rf_a_b) begin
-	if (data_addra_reg[14:1] == data_addrb_int[14:1]) begin
-	if ((ena_reg == 1) && (enb_int == 1)) begin
-	    case ({wr_mode_a, wr_mode_b, wea_reg, web_int})
-//		6'b000011 : begin data_collision_a_b <= 2'b00; display_wa_wb; end
-//		6'b000111 : begin data_collision_a_b <= 2'b00; display_wa_wb; end
-//		6'b001011 : begin data_collision_a_b <= 2'b00; display_wa_wb; end
-		6'b010011 : begin data_collision_a_b <= 2'b11; display_wa_wb; end
-		6'b010111 : begin data_collision_a_b <= 2'b11; display_wa_wb; end
-		6'b011011 : begin data_collision_a_b <= 2'b10; display_wa_wb; end
-//		6'b100011 : begin data_collision_a_b <= 2'b00; display_wa_wb; end
-//		6'b100111 : begin data_collision_a_b <= 2'b00; display_wa_wb; end
-//		6'b101011 : begin data_collision_a_b <= 2'b00; display_wa_wb; end
-//		6'b000001 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
-//		6'b000101 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
-//		6'b001001 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
-//		6'b010001 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
-//		6'b010101 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
-//		6'b011001 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
-//		6'b100001 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
-//		6'b100101 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
-//		6'b101001 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
-//		6'b000010 : begin data_collision_a_b <= 2'b00; display_wa_rb; end
-//		6'b000110 : begin data_collision_a_b <= 2'b00; display_wa_rb; end
-//		6'b001010 : begin data_collision_a_b <= 2'b00; display_wa_rb; end
-		6'b010010 : begin data_collision_a_b <= 2'b01; display_wa_rb; end
-		6'b010110 : begin data_collision_a_b <= 2'b01; display_wa_rb; end
-		6'b011010 : begin data_collision_a_b <= 2'b01; display_wa_rb; end
-//		6'b100010 : begin data_collision_a_b <= 2'b00; display_wa_rb; end
-//		6'b100110 : begin data_collision_a_b <= 2'b00; display_wa_rb; end
-//		6'b101010 : begin data_collision_a_b <= 2'b00; display_wa_rb; end
-	    endcase
-	end
-	end
-	setup_rf_a_b <= 0;
-    end
-
-
-    always @(posedge setup_rf_b_a) begin
-	if (data_addra_int[14:1] == data_addrb_reg[14:1]) begin
-	if ((ena_int == 1) && (enb_reg == 1)) begin
-	    case ({wr_mode_a, wr_mode_b, wea_int, web_reg})
-//		6'b000011 : begin data_collision_b_a <= 2'b00; display_wa_wb; end
-		6'b000111 : begin data_collision_b_a <= 2'b11; display_wa_wb; end
-//		6'b001011 : begin data_collision_b_a <= 2'b00; display_wa_wb; end
-//		6'b010011 : begin data_collision_b_a <= 2'b00; display_wa_wb; end
-		6'b010111 : begin data_collision_b_a <= 2'b11; display_wa_wb; end
-//		6'b011011 : begin data_collision_b_a <= 2'b00; display_wa_wb; end
-//		6'b100011 : begin data_collision_b_a <= 2'b00; display_wa_wb; end
-		6'b100111 : begin data_collision_b_a <= 2'b01; display_wa_wb; end
-//		6'b101011 : begin data_collision_b_a <= 2'b00; display_wa_wb; end
-//		6'b000001 : begin data_collision_b_a <= 2'b00; display_ra_wb; end
-		6'b000101 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
-//		6'b001001 : begin data_collision_b_a <= 2'b00; display_ra_wb; end
-//		6'b010001 : begin data_collision_b_a <= 2'b00; display_ra_wb; end
-		6'b010101 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
-//		6'b011001 : begin data_collision_b_a <= 2'b00; display_ra_wb; end
-//		6'b100001 : begin data_collision_b_a <= 2'b00; display_ra_wb; end
-		6'b100101 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
-//		6'b101001 : begin data_collision_b_a <= 2'b00; display_ra_wb; end
-//		6'b000010 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
-//		6'b000110 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
-//		6'b001010 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
-//		6'b010010 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
-//		6'b010110 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
-//		6'b011010 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
-//		6'b100010 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
-//		6'b100110 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
-//		6'b101010 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
-	    endcase
-	end
-	end
-	setup_rf_b_a <= 0;
-    end
-
-
-    always @(posedge clka_int) begin
-	addra_reg <= addra_int;
-	ena_reg <= ena_int;
-	ssra_reg <= ssra_int;
-	wea_reg <= wea_int;
-    end
-
-    always @(posedge clkb_int) begin
-	addrb_reg <= addrb_int;
-	enb_reg <= enb_int;
-	ssrb_reg <= ssrb_int;
-	web_reg <= web_int;
-    end
-
-    // Data
-    always @(posedge memory_collision) begin
-	for (dmi = 0; dmi < 1; dmi = dmi + 1) begin
-	    mem[data_addra_int + dmi] <= 1'bX;
-	end
-	memory_collision <= 0;
-    end
-
-    always @(posedge memory_collision_a_b) begin
-	for (dmi = 0; dmi < 1; dmi = dmi + 1) begin
-	    mem[data_addra_reg + dmi] <= 1'bX;
-	end
-	memory_collision_a_b <= 0;
-    end
-
-    always @(posedge memory_collision_b_a) begin
-	for (dmi = 0; dmi < 1; dmi = dmi + 1) begin
-	    mem[data_addra_int + dmi] <= 1'bX;
-	end
-	memory_collision_b_a <= 0;
-    end
-
-    always @(posedge data_collision[1]) begin
-	if (ssra_int == 0) begin
-	    doa_out <= 1'bX;
-	end
-	data_collision[1] <= 0;
-    end
-
-    always @(posedge data_collision[0]) begin
-	if (ssrb_int == 0) begin
-	    for (dbi = 0; dbi < 1; dbi = dbi + 1) begin
-		dob_out[data_addra_int[0 : 0] + dbi] <= 1'bX;
-	    end
-	end
-	data_collision[0] <= 0;
-    end
-
-    always @(posedge data_collision_a_b[1]) begin
-	if (ssra_reg == 0) begin
-	    doa_out <= 1'bX;
-	end
-	data_collision_a_b[1] <= 0;
-    end
-
-    always @(posedge data_collision_a_b[0]) begin
-	if (ssrb_int == 0) begin
-	    for (dbi = 0; dbi < 1; dbi = dbi + 1) begin
-		dob_out[data_addra_reg[0 : 0] + dbi] <= 1'bX;
-	    end
-	end
-	data_collision_a_b[0] <= 0;
-    end
-
-    always @(posedge data_collision_b_a[1]) begin
-	if (ssra_int == 0) begin
-	    doa_out <= 1'bX;
-	end
-	data_collision_b_a[1] <= 0;
-    end
-
-    always @(posedge data_collision_b_a[0]) begin
-	if (ssrb_reg == 0) begin
-	    for (dbi = 0; dbi < 1; dbi = dbi + 1) begin
-		dob_out[data_addra_int[0 : 0] + dbi] <= 1'bX;
-	    end
-	end
-	data_collision_b_a[0] <= 0;
-    end
-
-
-    initial begin
-	case (WRITE_MODE_A)
-	    "WRITE_FIRST" : wr_mode_a <= 2'b00;
-	    "READ_FIRST"  : wr_mode_a <= 2'b01;
-	    "NO_CHANGE"   : wr_mode_a <= 2'b10;
-	    default       : begin
-				$display("Attribute Syntax Error : The Attribute WRITE_MODE_A on RAMB16_S1_S2 instance %m is set to %s.  Legal values for this attribute are WRITE_FIRST, READ_FIRST or NO_CHANGE.", WRITE_MODE_A);
-				$finish;
-			    end
-	endcase
-    end
-
-    initial begin
-	case (WRITE_MODE_B)
-	    "WRITE_FIRST" : wr_mode_b <= 2'b00;
-	    "READ_FIRST"  : wr_mode_b <= 2'b01;
-	    "NO_CHANGE"   : wr_mode_b <= 2'b10;
-	    default       : begin
-				$display("Attribute Syntax Error : The Attribute WRITE_MODE_B on RAMB16_S1_S2 instance %m is set to %s.  Legal values for this attribute are WRITE_FIRST, READ_FIRST or NO_CHANGE.", WRITE_MODE_B);
-				$finish;
-			    end
-	endcase
-    end
-
-    // Port A
-    always @(posedge clka_int) begin
-	if (ena_int == 1'b1) begin
-	    if (ssra_int == 1'b1) begin
-		doa_out[0] <= SRVAL_A[0];
-	    end
-	    else begin
-		if (wea_int == 1'b1) begin
-		    if (wr_mode_a == 2'b00) begin
-			doa_out <= dia_int;
-		    end
-		    else if (wr_mode_a == 2'b01) begin
-			doa_out[0] <= mem[data_addra_int + 0];
-		    end
-		end
-		else begin
-		    doa_out[0] <= mem[data_addra_int + 0];
-		end
-	    end
-	end
-    end
-
-    always @(posedge clka_int) begin
-	if (ena_int == 1'b1 && wea_int == 1'b1) begin
-	    mem[data_addra_int + 0] <= dia_int[0];
-	end
-    end
-
-    // Port B
-    always @(posedge clkb_int) begin
-	if (enb_int == 1'b1) begin
-	    if (ssrb_int == 1'b1) begin
-		dob_out[0] <= SRVAL_B[0];
-		dob_out[1] <= SRVAL_B[1];
-	    end
-	    else begin
-		if (web_int == 1'b1) begin
-		    if (wr_mode_b == 2'b00) begin
-			dob_out <= dib_int;
-		    end
-		    else if (wr_mode_b == 2'b01) begin
-			dob_out[0] <= mem[data_addrb_int + 0];
-			dob_out[1] <= mem[data_addrb_int + 1];
-		    end
-		end
-		else begin
-		    dob_out[0] <= mem[data_addrb_int + 0];
-		    dob_out[1] <= mem[data_addrb_int + 1];
-		end
-	    end
-	end
-    end
-
-    always @(posedge clkb_int) begin
-	if (enb_int == 1'b1 && web_int == 1'b1) begin
-	    mem[data_addrb_int + 0] <= dib_int[0];
-	    mem[data_addrb_int + 1] <= dib_int[1];
-	end
-    end
-
-    specify
-	(CLKA *> DOA) = (100, 100);
-	(CLKB *> DOB) = (100, 100);
-    endspecify
-
-endmodule
-
-`else
-
-// $Header: /devl/xcs/repo/env/Databases/CAEInterfaces/verunilibs/data/unisims/RAMB16_S1_S2.v,v 1.10 2005/03/14 22:54:41 wloo Exp $
-///////////////////////////////////////////////////////////////////////////////
-// Copyright (c) 1995/2005 Xilinx, Inc.
-// All Right Reserved.
-///////////////////////////////////////////////////////////////////////////////
-//   ____  ____
-//  /   /\/   /
-// /___/  \  /    Vendor : Xilinx
-// \   \   \/     Version : 8.1i (I.13)
-//  \   \         Description : Xilinx Timing Simulation Library Component
-//  /   /                  16K-Bit Data and 2K-Bit Parity Dual Port Block RAM
-// /___/   /\     Filename : RAMB16_S1_S2.v
-// \   \  /  \    Timestamp : Thu Mar 10 16:44:01 PST 2005
-//  \___\/\___\
-//
-// Revision:
-//    03/23/04 - Initial version.
-//    03/10/05 - Initialized outputs.
-// End Revision
-
-`timescale 1 ps/1 ps
-
-module RAMB16_S1_S2 (DOA, DOB, ADDRA, ADDRB, CLKA, CLKB, DIA, DIB, ENA, ENB, SSRA, SSRB, WEA, WEB);
-
-    parameter INIT_A = 1'h0;
-    parameter INIT_B = 2'h0;
-    parameter SRVAL_A = 1'h0;
-    parameter SRVAL_B = 2'h0;
-    parameter WRITE_MODE_A = "WRITE_FIRST";
-    parameter WRITE_MODE_B = "WRITE_FIRST";
-    parameter SIM_COLLISION_CHECK = "ALL";
-    localparam SETUP_ALL = 1000;
-    localparam SETUP_READ_FIRST = 3000;
-
-    parameter INIT_00 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_01 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_02 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_03 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_04 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_05 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_06 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_07 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_08 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_09 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_0A = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_0B = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_0C = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_0D = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_0E = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_0F = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_10 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_11 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_12 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_13 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_14 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_15 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_16 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_17 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_18 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_19 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_1A = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_1B = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_1C = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_1D = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_1E = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_1F = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_20 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_21 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_22 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_23 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_24 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_25 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_26 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_27 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_28 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_29 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_2A = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_2B = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_2C = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_2D = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_2E = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_2F = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_30 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_31 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_32 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_33 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_34 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_35 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_36 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_37 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_38 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_39 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_3A = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_3B = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_3C = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_3D = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_3E = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-    parameter INIT_3F = 256'h0000000000000000000000000000000000000000000000000000000000000000;
-
-    output [0:0] DOA;
-    output [1:0] DOB;
-
-    input [13:0] ADDRA;
-    input [0:0] DIA;
-    input ENA, CLKA, WEA, SSRA;
-    input [12:0] ADDRB;
-    input [1:0] DIB;
-    input ENB, CLKB, WEB, SSRB;
-
-    reg [0:0] doa_out = INIT_A[0:0];
-    reg [1:0] dob_out = INIT_B[1:0];
-    
-    reg [1:0] mem [8191:0];
-    
-    reg [8:0] count, countp;
-    reg [1:0] wr_mode_a, wr_mode_b;
-
-    reg [5:0] dmi, dbi;
-    reg [5:0] pmi, pbi;
-
-    wire [13:0] addra_int;
-    reg [13:0] addra_reg;
-    wire [0:0] dia_int;
-    wire ena_int, clka_int, wea_int, ssra_int;
-    reg ena_reg, wea_reg, ssra_reg;
-    wire [12:0] addrb_int;
-    reg [12:0] addrb_reg;
-    wire [1:0] dib_int;
-    wire enb_int, clkb_int, web_int, ssrb_int;
-    reg display_flag, output_flag;
-    reg enb_reg, web_reg, ssrb_reg;
-
-    time time_clka, time_clkb;
-    time time_clka_clkb;
-    time time_clkb_clka;
-
-    reg setup_all_a_b;
-    reg setup_all_b_a;
-    reg setup_zero;
-    reg setup_rf_a_b;
-    reg setup_rf_b_a;
-    reg [1:0] data_collision, data_collision_a_b, data_collision_b_a;
-    reg memory_collision, memory_collision_a_b, memory_collision_b_a;
-    reg change_clka;
-    reg change_clkb;
-
-    wire [14:0] data_addra_int;
-    wire [14:0] data_addra_reg;
-    wire [14:0] data_addrb_int;
-    wire [14:0] data_addrb_reg;
-
-    wire dia_enable = ena_int && wea_int;
-    wire dib_enable = enb_int && web_int;
-
-    tri0 GSR = glbl.GSR;
-    wire gsr_int;
-
-    buf b_gsr (gsr_int, GSR);
-
-    buf b_doa [0:0] (DOA, doa_out);
-    buf b_addra [13:0] (addra_int, ADDRA);
-    buf b_dia [0:0] (dia_int, DIA);
-    buf b_ena (ena_int, ENA);
-    buf b_clka (clka_int, CLKA);
-    buf b_ssra (ssra_int, SSRA);
-    buf b_wea (wea_int, WEA);
-
-    buf b_dob [1:0] (DOB, dob_out);
-    buf b_addrb [12:0] (addrb_int, ADDRB);
-    buf b_dib [1:0] (dib_int, DIB);
-    buf b_enb (enb_int, ENB);
-    buf b_clkb (clkb_int, CLKB);
-    buf b_ssrb (ssrb_int, SSRB);
-    buf b_web (web_int, WEB);
-
-    
-    always @(gsr_int)
-	if (gsr_int) begin
-	    assign {doa_out} = INIT_A;
-	    assign {dob_out} = INIT_B;
-	end
-	else begin
-	    deassign doa_out;
-	    deassign dob_out;
-	end
-
-    
-    initial begin
-
-	for (count = 0; count < 128; count = count + 1) begin
-	    mem[count]          = INIT_00[(count * 2) +: 2];
-	    mem[128 * 1 + count]  = INIT_01[(count * 2) +: 2];
-	    mem[128 * 2 + count]  = INIT_02[(count * 2) +: 2];
-	    mem[128 * 3 + count]  = INIT_03[(count * 2) +: 2];
-	    mem[128 * 4 + count]  = INIT_04[(count * 2) +: 2];
-	    mem[128 * 5 + count]  = INIT_05[(count * 2) +: 2];
-	    mem[128 * 6 + count]  = INIT_06[(count * 2) +: 2];
-	    mem[128 * 7 + count]  = INIT_07[(count * 2) +: 2];
-	    mem[128 * 8 + count]  = INIT_08[(count * 2) +: 2];
-	    mem[128 * 9 + count]  = INIT_09[(count * 2) +: 2];
-	    mem[128 * 10 + count] = INIT_0A[(count * 2) +: 2];
-	    mem[128 * 11 + count] = INIT_0B[(count * 2) +: 2];
-	    mem[128 * 12 + count] = INIT_0C[(count * 2) +: 2];
-	    mem[128 * 13 + count] = INIT_0D[(count * 2) +: 2];
-	    mem[128 * 14 + count] = INIT_0E[(count * 2) +: 2];
-	    mem[128 * 15 + count] = INIT_0F[(count * 2) +: 2];
-	    mem[128 * 16 + count] = INIT_10[(count * 2) +: 2];
-	    mem[128 * 17 + count] = INIT_11[(count * 2) +: 2];
-	    mem[128 * 18 + count] = INIT_12[(count * 2) +: 2];
-	    mem[128 * 19 + count] = INIT_13[(count * 2) +: 2];
-	    mem[128 * 20 + count] = INIT_14[(count * 2) +: 2];
-	    mem[128 * 21 + count] = INIT_15[(count * 2) +: 2];
-	    mem[128 * 22 + count] = INIT_16[(count * 2) +: 2];
-	    mem[128 * 23 + count] = INIT_17[(count * 2) +: 2];
-	    mem[128 * 24 + count] = INIT_18[(count * 2) +: 2];
-	    mem[128 * 25 + count] = INIT_19[(count * 2) +: 2];
-	    mem[128 * 26 + count] = INIT_1A[(count * 2) +: 2];
-	    mem[128 * 27 + count] = INIT_1B[(count * 2) +: 2];
-	    mem[128 * 28 + count] = INIT_1C[(count * 2) +: 2];
-	    mem[128 * 29 + count] = INIT_1D[(count * 2) +: 2];
-	    mem[128 * 30 + count] = INIT_1E[(count * 2) +: 2];
-	    mem[128 * 31 + count] = INIT_1F[(count * 2) +: 2];
-	    mem[128 * 32 + count] = INIT_20[(count * 2) +: 2];
-	    mem[128 * 33 + count] = INIT_21[(count * 2) +: 2];
-	    mem[128 * 34 + count] = INIT_22[(count * 2) +: 2];
-	    mem[128 * 35 + count] = INIT_23[(count * 2) +: 2];
-	    mem[128 * 36 + count] = INIT_24[(count * 2) +: 2];
-	    mem[128 * 37 + count] = INIT_25[(count * 2) +: 2];
-	    mem[128 * 38 + count] = INIT_26[(count * 2) +: 2];
-	    mem[128 * 39 + count] = INIT_27[(count * 2) +: 2];
-	    mem[128 * 40 + count] = INIT_28[(count * 2) +: 2];
-	    mem[128 * 41 + count] = INIT_29[(count * 2) +: 2];
-	    mem[128 * 42 + count] = INIT_2A[(count * 2) +: 2];
-	    mem[128 * 43 + count] = INIT_2B[(count * 2) +: 2];
-	    mem[128 * 44 + count] = INIT_2C[(count * 2) +: 2];
-	    mem[128 * 45 + count] = INIT_2D[(count * 2) +: 2];
-	    mem[128 * 46 + count] = INIT_2E[(count * 2) +: 2];
-	    mem[128 * 47 + count] = INIT_2F[(count * 2) +: 2];
-	    mem[128 * 48 + count] = INIT_30[(count * 2) +: 2];
-	    mem[128 * 49 + count] = INIT_31[(count * 2) +: 2];
-	    mem[128 * 50 + count] = INIT_32[(count * 2) +: 2];
-	    mem[128 * 51 + count] = INIT_33[(count * 2) +: 2];
-	    mem[128 * 52 + count] = INIT_34[(count * 2) +: 2];
-	    mem[128 * 53 + count] = INIT_35[(count * 2) +: 2];
-	    mem[128 * 54 + count] = INIT_36[(count * 2) +: 2];
-	    mem[128 * 55 + count] = INIT_37[(count * 2) +: 2];
-	    mem[128 * 56 + count] = INIT_38[(count * 2) +: 2];
-	    mem[128 * 57 + count] = INIT_39[(count * 2) +: 2];
-	    mem[128 * 58 + count] = INIT_3A[(count * 2) +: 2];
-	    mem[128 * 59 + count] = INIT_3B[(count * 2) +: 2];
-	    mem[128 * 60 + count] = INIT_3C[(count * 2) +: 2];
-	    mem[128 * 61 + count] = INIT_3D[(count * 2) +: 2];
-	    mem[128 * 62 + count] = INIT_3E[(count * 2) +: 2];
-	    mem[128 * 63 + count] = INIT_3F[(count * 2) +: 2];
-	end
-
-	
-	change_clka <= 0;
-	change_clkb <= 0;
-	data_collision <= 0;
-	data_collision_a_b <= 0;
-	data_collision_b_a <= 0;
-	memory_collision <= 0;
-	memory_collision_a_b <= 0;
-	memory_collision_b_a <= 0;
-	setup_all_a_b <= 0;
-	setup_all_b_a <= 0;
-	setup_zero <= 0;
-	setup_rf_a_b <= 0;
-	setup_rf_b_a <= 0;
-    end
-
-    assign data_addra_int = addra_int * 1;
-    assign data_addra_reg = addra_reg * 1;
-    assign data_addrb_int = addrb_int * 2;
-    assign data_addrb_reg = addrb_reg * 2;
-
-
-    initial begin
-
-	display_flag = 1;
-	output_flag = 1;
-	
-	case (SIM_COLLISION_CHECK)
-
-	    "NONE" : begin
-		         output_flag = 0;
-	                 display_flag = 0;
-	             end
-	    "WARNING_ONLY" : output_flag = 0;
-	    "GENERATE_ONLY" : display_flag = 0;
-	    "ALL" : ;
-
-	    default : begin
-		          $display("Attribute Syntax Error : The Attribute SIM_COLLISION_CHECK on RAMB16_S1_S2 instance %m is set to %s.  Legal values for this attribute are ALL, NONE, WARNING_ONLY or GENERATE_ONLY.", SIM_COLLISION_CHECK);
-		          $finish;
-	              end
-
-	endcase // case(SIM_COLLISION_CHECK)
-
-    end // initial begin
-
-    
-    always @(posedge clka_int) begin
-	if ((output_flag || display_flag)) begin
-	    time_clka = $time;
-	    #0 time_clkb_clka = time_clka - time_clkb;
-	    change_clka = ~change_clka;
-	end
-    end
-    
-    always @(posedge clkb_int) begin
-	if ((output_flag || display_flag)) begin
-	    time_clkb = $time;
-	    #0 time_clka_clkb = time_clkb - time_clka;
-	    change_clkb = ~change_clkb;
-	end
-    end
-    
-    always @(change_clkb) begin
-	if ((0 < time_clka_clkb) && (time_clka_clkb < SETUP_ALL))
-	    setup_all_a_b = 1;
-	if ((0 < time_clka_clkb) && (time_clka_clkb < SETUP_READ_FIRST))
-	    setup_rf_a_b = 1;
-    end
-
-    always @(change_clka) begin
-	if ((0 < time_clkb_clka) && (time_clkb_clka < SETUP_ALL))
-	    setup_all_b_a = 1;
-	if ((0 < time_clkb_clka) && (time_clkb_clka < SETUP_READ_FIRST))
-	    setup_rf_b_a = 1;
-    end
-
-    always @(change_clkb or change_clka) begin
-	if ((time_clkb_clka == 0) && (time_clka_clkb == 0))
-	    setup_zero = 1;
-    end
-
-    always @(posedge setup_zero) begin
-	if ((ena_int == 1) && (wea_int == 1) &&
-	    (enb_int == 1) && (web_int == 1) &&
-	    (data_addra_int[14:1] == data_addrb_int[14:1]))
-	    memory_collision <= 1;
-    end
-
-    always @(posedge setup_all_a_b or posedge setup_rf_a_b) begin
-	if ((ena_reg == 1) && (wea_reg == 1) &&
-	    (enb_int == 1) && (web_int == 1) &&
-	    (data_addra_reg[14:1] == data_addrb_int[14:1]))
-	    memory_collision_a_b <= 1;
-    end
-
-    always @(posedge setup_all_b_a or posedge setup_rf_b_a) begin
-	if ((ena_int == 1) && (wea_int == 1) &&
-	    (enb_reg == 1) && (web_reg == 1) &&
-	    (data_addra_int[14:1] == data_addrb_reg[14:1]))
-	    memory_collision_b_a <= 1;
-    end
-
-    always @(posedge setup_all_a_b) begin
-	if (data_addra_reg[14:1] == data_addrb_int[14:1]) begin
-	if ((ena_reg == 1) && (enb_int == 1)) begin
-	    case ({wr_mode_a, wr_mode_b, wea_reg, web_int})
-		6'b000011 : begin data_collision_a_b <= 2'b11; display_wa_wb; end
-		6'b000111 : begin data_collision_a_b <= 2'b11; display_wa_wb; end
-		6'b001011 : begin data_collision_a_b <= 2'b10; display_wa_wb; end
-//		6'b010011 : begin data_collision_a_b <= 2'b00; display_wa_wb; end
-//		6'b010111 : begin data_collision_a_b <= 2'b00; display_wa_wb; end
-//		6'b011011 : begin data_collision_a_b <= 2'b00; display_wa_wb; end
-		6'b100011 : begin data_collision_a_b <= 2'b01; display_wa_wb; end
-		6'b100111 : begin data_collision_a_b <= 2'b01; display_wa_wb; end
-		6'b101011 : begin display_wa_wb; end
-		6'b000001 : begin data_collision_a_b <= 2'b10; display_ra_wb; end
-//		6'b000101 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
-		6'b001001 : begin data_collision_a_b <= 2'b10; display_ra_wb; end
-		6'b010001 : begin data_collision_a_b <= 2'b10; display_ra_wb; end
-//		6'b010101 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
-		6'b011001 : begin data_collision_a_b <= 2'b10; display_ra_wb; end
-		6'b100001 : begin data_collision_a_b <= 2'b10; display_ra_wb; end
-//		6'b100101 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
-		6'b101001 : begin data_collision_a_b <= 2'b10; display_ra_wb; end
-		6'b000010 : begin data_collision_a_b <= 2'b01; display_wa_rb; end
-		6'b000110 : begin data_collision_a_b <= 2'b01; display_wa_rb; end
-		6'b001010 : begin data_collision_a_b <= 2'b01; display_wa_rb; end
-//		6'b010010 : begin data_collision_a_b <= 2'b00; display_wa_rb; end
-//		6'b010110 : begin data_collision_a_b <= 2'b00; display_wa_rb; end
-//		6'b011010 : begin data_collision_a_b <= 2'b00; display_wa_rb; end
-		6'b100010 : begin data_collision_a_b <= 2'b01; display_wa_rb; end
-		6'b100110 : begin data_collision_a_b <= 2'b01; display_wa_rb; end
-		6'b101010 : begin data_collision_a_b <= 2'b01; display_wa_rb; end
-	    endcase
-	end
-	end
-	setup_all_a_b <= 0;
-    end
-
-
-    always @(posedge setup_all_b_a) begin
-	if (data_addra_int[14:1] == data_addrb_reg[14:1]) begin
-	if ((ena_int == 1) && (enb_reg == 1)) begin
-	    case ({wr_mode_a, wr_mode_b, wea_int, web_reg})
-		6'b000011 : begin data_collision_b_a <= 2'b11; display_wa_wb; end
-//		6'b000111 : begin data_collision_b_a <= 2'b00; display_wa_wb; end
-		6'b001011 : begin data_collision_b_a <= 2'b10; display_wa_wb; end
-		6'b010011 : begin data_collision_b_a <= 2'b11; display_wa_wb; end
-//		6'b010111 : begin data_collision_b_a <= 2'b00; display_wa_wb; end
-		6'b011011 : begin data_collision_b_a <= 2'b10; display_wa_wb; end
-		6'b100011 : begin data_collision_b_a <= 2'b01; display_wa_wb; end
-		6'b100111 : begin data_collision_b_a <= 2'b01; display_wa_wb; end
-		6'b101011 : begin display_wa_wb; end
-		6'b000001 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
-		6'b000101 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
-		6'b001001 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
-		6'b010001 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
-		6'b010101 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
-		6'b011001 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
-		6'b100001 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
-		6'b100101 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
-		6'b101001 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
-		6'b000010 : begin data_collision_b_a <= 2'b01; display_wa_rb; end
-		6'b000110 : begin data_collision_b_a <= 2'b01; display_wa_rb; end
-		6'b001010 : begin data_collision_b_a <= 2'b01; display_wa_rb; end
-//		6'b010010 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
-//		6'b010110 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
-//		6'b011010 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
-		6'b100010 : begin data_collision_b_a <= 2'b01; display_wa_rb; end
-		6'b100110 : begin data_collision_b_a <= 2'b01; display_wa_rb; end
-		6'b101010 : begin data_collision_b_a <= 2'b01; display_wa_rb; end
-	    endcase
-	end
-	end
-	setup_all_b_a <= 0;
-    end
-
-
-    always @(posedge setup_zero) begin
-	if (data_addra_int[14:1] == data_addrb_int[14:1]) begin
-	if ((ena_int == 1) && (enb_int == 1)) begin
-	    case ({wr_mode_a, wr_mode_b, wea_int, web_int})
-		6'b000011 : begin data_collision <= 2'b11; display_wa_wb; end
-		6'b000111 : begin data_collision <= 2'b11; display_wa_wb; end
-		6'b001011 : begin data_collision <= 2'b10; display_wa_wb; end
-		6'b010011 : begin data_collision <= 2'b11; display_wa_wb; end
-		6'b010111 : begin data_collision <= 2'b11; display_wa_wb; end
-		6'b011011 : begin data_collision <= 2'b10; display_wa_wb; end
-		6'b100011 : begin data_collision <= 2'b01; display_wa_wb; end
-		6'b100111 : begin data_collision <= 2'b01; display_wa_wb; end
-		6'b101011 : begin display_wa_wb; end
-		6'b000001 : begin data_collision <= 2'b10; display_ra_wb; end
-//		6'b000101 : begin data_collision <= 2'b00; display_ra_wb; end
-		6'b001001 : begin data_collision <= 2'b10; display_ra_wb; end
-		6'b010001 : begin data_collision <= 2'b10; display_ra_wb; end
-//		6'b010101 : begin data_collision <= 2'b00; display_ra_wb; end
-		6'b011001 : begin data_collision <= 2'b10; display_ra_wb; end
-		6'b100001 : begin data_collision <= 2'b10; display_ra_wb; end
-//		6'b100101 : begin data_collision <= 2'b00; display_ra_wb; end
-		6'b101001 : begin data_collision <= 2'b10; display_ra_wb; end
-		6'b000010 : begin data_collision <= 2'b01; display_wa_rb; end
-		6'b000110 : begin data_collision <= 2'b01; display_wa_rb; end
-		6'b001010 : begin data_collision <= 2'b01; display_wa_rb; end
-//		6'b010010 : begin data_collision <= 2'b00; display_wa_rb; end
-//		6'b010110 : begin data_collision <= 2'b00; display_wa_rb; end
-//		6'b011010 : begin data_collision <= 2'b00; display_wa_rb; end
-		6'b100010 : begin data_collision <= 2'b01; display_wa_rb; end
-		6'b100110 : begin data_collision <= 2'b01; display_wa_rb; end
-		6'b101010 : begin data_collision <= 2'b01; display_wa_rb; end
-	    endcase
-	end
-	end
-	setup_zero <= 0;
-    end
-
-    task display_ra_wb;
-    begin
-	if (display_flag)
-        $display("Memory Collision Error on RAMB16_S1_S2:%m at simulation time %.3f ns\nA read was performed on address %h (hex) of Port A while a write was requested to the same address on Port B. The write will be successful however the read value on Port A is unknown until the next CLKA cycle.", $time/1000.0, addra_int);
-    end
-    endtask
-
-    task display_wa_rb;
-    begin
-	if (display_flag)
-        $display("Memory Collision Error on RAMB16_S1_S2:%m at simulation time %.3f ns\nA read was performed on address %h (hex) of Port B while a write was requested to the same address on Port A. The write will be successful however the read value on Port B is unknown until the next CLKB cycle.", $time/1000.0, addrb_int);
-    end
-    endtask
-
-    task display_wa_wb;
-    begin
-	if (display_flag)
-        $display("Memory Collision Error on RAMB16_S1_S2:%m at simulation time %.3f ns\nA write was requested to the same address simultaneously at both Port A and Port B of the RAM. The contents written to the RAM at address location %h (hex) of Port A and address location %h (hex) of Port B are unknown.", $time/1000.0, addra_int, addrb_int);
-    end
-    endtask
-
-
-    always @(posedge setup_rf_a_b) begin
-	if (data_addra_reg[14:1] == data_addrb_int[14:1]) begin
-	if ((ena_reg == 1) && (enb_int == 1)) begin
-	    case ({wr_mode_a, wr_mode_b, wea_reg, web_int})
-//		6'b000011 : begin data_collision_a_b <= 2'b00; display_wa_wb; end
-//		6'b000111 : begin data_collision_a_b <= 2'b00; display_wa_wb; end
-//		6'b001011 : begin data_collision_a_b <= 2'b00; display_wa_wb; end
-		6'b010011 : begin data_collision_a_b <= 2'b11; display_wa_wb; end
-		6'b010111 : begin data_collision_a_b <= 2'b11; display_wa_wb; end
-		6'b011011 : begin data_collision_a_b <= 2'b10; display_wa_wb; end
-//		6'b100011 : begin data_collision_a_b <= 2'b00; display_wa_wb; end
-//		6'b100111 : begin data_collision_a_b <= 2'b00; display_wa_wb; end
-//		6'b101011 : begin data_collision_a_b <= 2'b00; display_wa_wb; end
-//		6'b000001 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
-//		6'b000101 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
-//		6'b001001 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
-//		6'b010001 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
-//		6'b010101 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
-//		6'b011001 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
-//		6'b100001 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
-//		6'b100101 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
-//		6'b101001 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
-//		6'b000010 : begin data_collision_a_b <= 2'b00; display_wa_rb; end
-//		6'b000110 : begin data_collision_a_b <= 2'b00; display_wa_rb; end
-//		6'b001010 : begin data_collision_a_b <= 2'b00; display_wa_rb; end
-		6'b010010 : begin data_collision_a_b <= 2'b01; display_wa_rb; end
-		6'b010110 : begin data_collision_a_b <= 2'b01; display_wa_rb; end
-		6'b011010 : begin data_collision_a_b <= 2'b01; display_wa_rb; end
-//		6'b100010 : begin data_collision_a_b <= 2'b00; display_wa_rb; end
-//		6'b100110 : begin data_collision_a_b <= 2'b00; display_wa_rb; end
-//		6'b101010 : begin data_collision_a_b <= 2'b00; display_wa_rb; end
-	    endcase
-	end
-	end
-	setup_rf_a_b <= 0;
-    end
-
-
-    always @(posedge setup_rf_b_a) begin
-	if (data_addra_int[14:1] == data_addrb_reg[14:1]) begin
-	if ((ena_int == 1) && (enb_reg == 1)) begin
-	    case ({wr_mode_a, wr_mode_b, wea_int, web_reg})
-//		6'b000011 : begin data_collision_b_a <= 2'b00; display_wa_wb; end
-		6'b000111 : begin data_collision_b_a <= 2'b11; display_wa_wb; end
-//		6'b001011 : begin data_collision_b_a <= 2'b00; display_wa_wb; end
-//		6'b010011 : begin data_collision_b_a <= 2'b00; display_wa_wb; end
-		6'b010111 : begin data_collision_b_a <= 2'b11; display_wa_wb; end
-//		6'b011011 : begin data_collision_b_a <= 2'b00; display_wa_wb; end
-//		6'b100011 : begin data_collision_b_a <= 2'b00; display_wa_wb; end
-		6'b100111 : begin data_collision_b_a <= 2'b01; display_wa_wb; end
-//		6'b101011 : begin data_collision_b_a <= 2'b00; display_wa_wb; end
-//		6'b000001 : begin data_collision_b_a <= 2'b00; display_ra_wb; end
-		6'b000101 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
-//		6'b001001 : begin data_collision_b_a <= 2'b00; display_ra_wb; end
-//		6'b010001 : begin data_collision_b_a <= 2'b00; display_ra_wb; end
-		6'b010101 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
-//		6'b011001 : begin data_collision_b_a <= 2'b00; display_ra_wb; end
-//		6'b100001 : begin data_collision_b_a <= 2'b00; display_ra_wb; end
-		6'b100101 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
-//		6'b101001 : begin data_collision_b_a <= 2'b00; display_ra_wb; end
-//		6'b000010 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
-//		6'b000110 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
-//		6'b001010 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
-//		6'b010010 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
-//		6'b010110 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
-//		6'b011010 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
-//		6'b100010 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
-//		6'b100110 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
-//		6'b101010 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
-	    endcase
-	end
-	end
-	setup_rf_b_a <= 0;
-    end
-
-
-    always @(posedge clka_int) begin
-	if ((output_flag || display_flag)) begin
-	    addra_reg <= addra_int;
-	    ena_reg <= ena_int;
-	    ssra_reg <= ssra_int;
-	    wea_reg <= wea_int;
-	end
-    end
-    
-    always @(posedge clkb_int) begin
-	if ((output_flag || display_flag)) begin
-	    addrb_reg <= addrb_int;
-	    enb_reg <= enb_int;
-	    ssrb_reg <= ssrb_int;
-	    web_reg <= web_int;
-	end
-    end
-    
-	    
-    // Data
-    always @(posedge memory_collision) begin
-	if ((output_flag || display_flag)) begin
-	    mem[addra_int[13:1]][addra_int[0:0] * 1 +: 1] <= 1'bx;
-	    memory_collision <= 0;
-	end
-	
-    end
-
-    always @(posedge memory_collision_a_b) begin
-	if ((output_flag || display_flag)) begin
-	    mem[addra_reg[13:1]][addra_reg[0:0] * 1 +: 1] <= 1'bx;
-	    memory_collision_a_b <= 0;
-	end
-    end
-    
-    always @(posedge memory_collision_b_a) begin
-	if ((output_flag || display_flag)) begin
-	    mem[addra_int[13:1]][addra_int[0:0] * 1 +: 1] <= 1'bx;
-	    memory_collision_b_a <= 0;
-	end
-    end
-    
-    always @(posedge data_collision[1]) begin
-	if (ssra_int == 0 && output_flag) begin
-	    doa_out <= #100 1'bX;
-	end
-	data_collision[1] <= 0;
-    end
-
-    always @(posedge data_collision[0]) begin
-	if (ssrb_int == 0 && output_flag) begin
-	    dob_out[addra_int[0:0] * 1 +: 1] <= #100 1'bX;
-	end
-	data_collision[0] <= 0;
-    end
-
-    always @(posedge data_collision_a_b[1]) begin
-	if (ssra_reg == 0 && output_flag) begin
-	    doa_out <= #100 1'bX;
-	end
-	data_collision_a_b[1] <= 0;
-    end
-
-    always @(posedge data_collision_a_b[0]) begin
-	if (ssrb_int == 0 && output_flag) begin
-	    dob_out[addra_reg[0:0] * 1 +: 1] <= #100 1'bX;
-	end
-	data_collision_a_b[0] <= 0;
-    end
-
-    always @(posedge data_collision_b_a[1]) begin
-	if (ssra_int == 0 && output_flag) begin
-	    doa_out <= #100 1'bX;
-	end
-	data_collision_b_a[1] <= 0;
-    end
-
-    always @(posedge data_collision_b_a[0]) begin
-	if (ssrb_reg == 0 && output_flag) begin
-	    dob_out[addra_int[0:0] * 1 +: 1] <= #100 1'bX;
-	end
-	data_collision_b_a[0] <= 0;
-    end
-
-
-    initial begin
-	case (WRITE_MODE_A)
-	    "WRITE_FIRST" : wr_mode_a <= 2'b00;
-	    "READ_FIRST"  : wr_mode_a <= 2'b01;
-	    "NO_CHANGE"   : wr_mode_a <= 2'b10;
-	    default       : begin
-				$display("Attribute Syntax Error : The Attribute WRITE_MODE_A on RAMB16_S1_S2 instance %m is set to %s.  Legal values for this attribute are WRITE_FIRST, READ_FIRST or NO_CHANGE.", WRITE_MODE_A);
-				$finish;
-			    end
-	endcase
-    end
-
-    initial begin
-	case (WRITE_MODE_B)
-	    "WRITE_FIRST" : wr_mode_b <= 2'b00;
-	    "READ_FIRST"  : wr_mode_b <= 2'b01;
-	    "NO_CHANGE"   : wr_mode_b <= 2'b10;
-	    default       : begin
-				$display("Attribute Syntax Error : The Attribute WRITE_MODE_B on RAMB16_S1_S2 instance %m is set to %s.  Legal values for this attribute are WRITE_FIRST, READ_FIRST or NO_CHANGE.", WRITE_MODE_B);
-				$finish;
-			    end
-	endcase
-    end
-
-
-    // Port A
-    always @(posedge clka_int) begin
-
-	if (ena_int == 1'b1) begin
-
-	    if (ssra_int == 1'b1) begin
-		{doa_out} <= #100 SRVAL_A;
-	    end
-	    else begin
-		if (wea_int == 1'b1) begin
-		    if (wr_mode_a == 2'b00) begin
-			doa_out <= #100 dia_int;
-		    end
-		    else if (wr_mode_a == 2'b01) begin
-
-			doa_out <= #100 mem[addra_int[13:1]][addra_int[0:0] * 1 +: 1];
-
-		    end
-		end
-		else begin
-
-		    doa_out <= #100 mem[addra_int[13:1]][addra_int[0:0] * 1 +: 1];
-		    
-		end
-	    end
-
-	    // memory
-	    if (wea_int == 1'b1) begin
-		mem[addra_int[13:1]][addra_int[0:0] * 1 +: 1] <= dia_int;
-	    end
-	    
-	end
-    end
-
-
-    // Port B
-    always @(posedge clkb_int) begin
-
-	if (enb_int == 1'b1) begin
-
-	    if (ssrb_int == 1'b1) begin
-		{dob_out} <= #100 SRVAL_B;
-	    end
-	    else begin
-		if (web_int == 1'b1) begin
-		    if (wr_mode_b == 2'b00) begin
-			dob_out <= #100 dib_int;
-		    end
-		    else if (wr_mode_b == 2'b01) begin
-			dob_out <= #100 mem[addrb_int];
-		    end
-		end
-		else begin
-		    dob_out <= #100 mem[addrb_int];
-		end
-	    end
-
-	    // memory
-	    if (web_int == 1'b1) begin
-		mem[addrb_int] <= dib_int;
-	    end
-
-	end
-    end
-
-
-endmodule
-
-`endif
diff --git a/eth/demo/verilog/demo.ucf b/eth/demo/verilog/demo.ucf
deleted file mode 100644
index f3562b46b..000000000
--- a/eth/demo/verilog/demo.ucf
+++ /dev/null
@@ -1,52 +0,0 @@
-NET "Reset_n"          LOC = "C15"; // PushButton #4

-NET "Clk_100M"         LOC = "B15";

-NET "Clk_125M"         LOC = "A16"; // GMII only

-

-NET "RS232_TXD"        LOC = "A9";

-NET "RS232_RXD"        LOC = "F1";

-

-NET "USB_TXD"          LOC = "D1";

-NET "USB_RXD"          LOC = "A8";

-

-NET "PHY_RESET_n"      LOC = "E25";

-

-NET "PHY_RXC"          LOC = "B13";

-NET "PHY_RXD<0>"       LOC = "D16";

-NET "PHY_RXD<1>"       LOC = "C16";

-NET "PHY_RXD<2>"       LOC = "D15";

-NET "PHY_RXD<3>"       LOC = "D14";

-NET "PHY_RXD<4>"       LOC = "E14";

-NET "PHY_RXD<5>"       LOC = "F14";

-NET "PHY_RXD<6>"       LOC = "F11";

-NET "PHY_RXD<7>"       LOC = "F12";

-NET "PHY_RXDV"         LOC = "F13";

-NET "PHY_RXER"         LOC = "E13";

-

-NET "PHY_GTX_CLK"      LOC = "C26"; // GMII only

-NET "PHY_TXC"          LOC = "A10";

-NET "PHY_TXD<0>"       LOC = "H26";

-NET "PHY_TXD<1>"       LOC = "H24";

-NET "PHY_TXD<2>"       LOC = "G26";

-NET "PHY_TXD<3>"       LOC = "G24";

-NET "PHY_TXD<4>"       LOC = "F26";

-NET "PHY_TXD<5>"       LOC = "F24";

-NET "PHY_TXD<6>"       LOC = "E26";

-NET "PHY_TXD<7>"       LOC = "E24";

-NET "PHY_TXEN"         LOC = "D26";

-NET "PHY_TXER"         LOC = "D24";

-

-NET "PHY_COL"          LOC = "B24";

-NET "PHY_CRS"          LOC = "D25";

-

-NET "PHY_MDC"          LOC = "G25";

-NET "PHY_MDIO"         LOC = "H25";

-

-NET "LED<1>"           LOC = "D13"; // LED #1-4

-NET "LED<2>"           LOC = "D12";

-NET "LED<3>"           LOC = "C11";

-NET "LED<4>"           LOC = "D11";

-

-NET "Clk_100M" PERIOD = 10.000 ; # 100  MHz

-NET "Clk_125M" PERIOD = 8.000  ; # 125  MHz

-NET "PHY_RXC"  PERIOD = 8.000  ; # 125  MHz

-NET "PHY_TXC"  PERIOD = 8.000  ; # 125  MHz

diff --git a/eth/demo/verilog/demo.v b/eth/demo/verilog/demo.v
deleted file mode 100644
index 649903c9a..000000000
--- a/eth/demo/verilog/demo.v
+++ /dev/null
@@ -1,378 +0,0 @@
-module demo(

-  Reset_n,

-  Clk_100M,

-  Clk_125M, // GMII only

-

-  RS232_TXD,

-  RS232_RXD,

-

-  USB_TXD,

-  USB_RXD,

-

-  //--- 10/100/1000BASE-T Ethernet PHY (MII/GMII)

-  PHY_RESET_n,

-

-  PHY_RXC,

-  PHY_RXD,

-  PHY_RXDV,

-  PHY_RXER,

-

-  PHY_GTX_CLK, // GMII only

-  PHY_TXC,

-  PHY_TXD,

-  PHY_TXEN,

-  PHY_TXER,

-

-  PHY_COL,

-  PHY_CRS,

-

-  PHY_MDC,

-  PHY_MDIO,

-

-  // Misc. I/Os

-  LED,

-  Button

-);

-

-  input        Reset_n;

-  input        Clk_100M;

-  input        Clk_125M; // GMII

-

-  output       RS232_TXD;

-  input        RS232_RXD;

-

-  output       USB_TXD;

-  input        USB_RXD;

-

-  //--- 10/100/1000BASE-T Ethernet PHY (MII/GMII)

-  output       PHY_RESET_n;

-

-  input        PHY_RXC;

-  input [7:0]  PHY_RXD;

-  input        PHY_RXDV;

-  input        PHY_RXER;

-

-  output       PHY_GTX_CLK; // GMII only

-  input        PHY_TXC;

-  output [7:0] PHY_TXD;

-  output       PHY_TXEN;

-  output       PHY_TXER;

-

-  input        PHY_COL;

-  input        PHY_CRS;

-

-  output       PHY_MDC;

-  inout        PHY_MDIO;

-

-  // Misc. I/Os

-  output [1:4] LED;

-

-  input [1:4]  Button;

-

-  //-------------------------------------------------------------------------

-  // Local declarations

-  //-------------------------------------------------------------------------

-

-  // Rename to "standard" core clock name

-  wire Clk = Clk_100M;

-

-  reg [27:0] Counter;

-  always @( negedge Reset_n or posedge Clk )

-    if ( ~Reset_n )

-      Counter <= 0;

-    else

-      Counter <= Counter + 1;

-

-  assign LED[1:4] = Counter[27:24];

-

-  //-------------------------------------------------------------------------

-  // Instantiation of sub-modules

-  //-------------------------------------------------------------------------

-

-  //--- UART ----------------------------------------------------------------

-

-  wire       UART_RXD;

-  wire       UART_TXD;

-  wire       UART_RxValid;

-  wire [7:0] UART_RxData;

-  wire       UART_TxReady;

-  wire       UART_TxValid;

-  wire [7:0] UART_TxData;

-

-  demo_uart demo_uart(

-    .Reset_n( Reset_n ),

-    .Clk    ( Clk     ),

-

-    // Interface to UART PHY

-    .RXD_i( UART_RXD ),

-    .TXD_o( UART_TXD ),

-

-    // Clk is divided by (Prescaler+1) to generate 16x the bitrate

-`ifdef EHDL_SIMULATION

-    .Prescaler_i( 16'd3 ), // Corresponds to VERY FAST - for simulation only!

-`else                      

-    .Prescaler_i( 16'd650 ), // Corresponds to 9600 baud (assuming 100 MHz clock)

-`endif

-                      

-    // Pulsed when RxData is valid

-    .RxValid_o( UART_RxValid ),

-    .RxData_o ( UART_RxData  ),

-

-    // Asserted when ready for a new Tx byte

-    .TxReady_o( UART_TxReady ),

-

-    // Pulsed when TxData is valid

-    .TxValid_i( UART_TxValid ),

-    .TxData_i ( UART_TxData  )

-  );

-

-  // Transmit & receive in parallel on either RS232 or USB/RS232 interface

-//  assign UART_RXD = RS232_RXD & USB_RXD; // RS232 signals are high when inactive

-  assign     UART_RXD = RS232_RXD;

-

-  assign RS232_TXD = UART_TXD;

-  assign USB_TXD   = UART_TXD;

-

-  //--- UART-to-Wishbone Master ---------------------------------------------

-

-  wire        WB_STB_ETH;

-  wire        WB_STB_PDM;

-  wire        WB_STB_PG;

-  wire        WB_CYC;

-  wire [14:0] WB_ADR;

-  wire        WB_WE;

-  wire [15:0] WB_DAT_Wr;

-  wire [15:0] WB_DAT_Rd;

-  wire        WB_ACK;

-

-  demo_wishbone_master demo_wishbone_master(

-    .Reset_n( Reset_n ),

-    .Clk    ( Clk     ),

-

-    //--- UART interface

-

-    // Pulsed when RxData_i is valid

-    .RxValid_i( UART_RxValid ),

-    .RxData_i ( UART_RxData  ),

-

-    // Asserted when ready for a new Tx byte

-    .TxReady_i( UART_TxReady ),

-

-    // Pulsed when TxData_o is valid

-    .TxValid_o( UART_TxValid ),

-    .TxData_o ( UART_TxData  ),

-

-    //--- Wishbone interface

-    .STB_ETH_O( WB_STB_ETH ),

-    .STB_PDM_O( WB_STB_PDM ),

-    .STB_PG_O ( WB_STB_PG  ),

-    .CYC_O    ( WB_CYC     ),

-    .ADR_O    ( WB_ADR     ),

-    .WE_O     ( WB_WE      ), 

-    .DAT_O    ( WB_DAT_Wr  ),

-    .DAT_I    ( WB_DAT_Rd  ),

-    .ACK_I    ( WB_ACK     )

-  );

-

-  //--- Wishbone clients ----------------------------------------------------

-

-  //--- Packet Descriptor Memory --------------------------------------------

-

-  wire [15:0] WB_DAT_Rd_PDM;

-  wire        WB_ACK_PDM;

-

-  wire        PDM_Rd;

-  wire [13:0] PDM_Addr;

-  wire [31:0] PDM_RdData;

-

-  demo_packet_descriptor_memory demo_packet_descriptor_memory(

-    .Reset_n( Reset_n ),

-    .Clk    ( Clk     ),

-

-    //--- Wishbone interface

-    .STB_I( WB_STB_PDM    ),

-    .CYC_I( WB_CYC        ),

-    .ADR_I( WB_ADR        ),

-    .WE_I ( WB_WE         ), 

-    .DAT_I( WB_DAT_Wr     ),

-    .DAT_O( WB_DAT_Rd_PDM ),

-    .ACK_O( WB_ACK_PDM    ),

-

-    //--- Packet Generator interface

-    // RdData_o is always valid exactly one clock after Addr_i changes

-    // and Rd_i is asserted

-    .Rd_i    ( PDM_Rd     ),

-    .Addr_i  ( PDM_Addr   ),

-    .RdData_o( PDM_RdData )

-  );

-

-  //--- Packet Generator ----------------------------------------------------

-

-  wire [15:0] WB_DAT_Rd_PG;

-  wire        WB_ACK_PG;

-

-  wire        Rx_mac_ra;

-  wire        Rx_mac_rd;

-  wire [31:0] Rx_mac_data;

-  wire [1:0]  Rx_mac_BE;

-  wire        Rx_mac_pa;

-  wire        Rx_mac_sop;

-  wire        Rx_mac_err;

-  wire        Rx_mac_eop;

-

-  wire        Tx_mac_wa;

-  wire        Tx_mac_wr;

-  wire [31:0] Tx_mac_data;

-  wire [1:0]  Tx_mac_BE;

-  wire        Tx_mac_sop;

-  wire        Tx_mac_eop;

-

-  demo_packet_generator demo_packet_generator(

-    .Reset_n( Reset_n ),

-    .Clk    ( Clk     ),

-

-    //--- Wishbone interface

-    .STB_I( WB_STB_PG    ),

-    .CYC_I( WB_CYC       ),

-    .ADR_I( WB_ADR[1:0]  ),

-    .WE_I ( WB_WE        ),

-    .DAT_I( WB_DAT_Wr    ),

-    .DAT_O( WB_DAT_Rd_PG ),

-    .ACK_O( WB_ACK_PG    ),

-

-    //--- Packet Descriptor Memory interface

-    // RdData_i is always valid exactly one clock after Addr_o changes

-    // and Rd_o is asserted

-    .Rd_o    ( PDM_Rd     ),

-    .Addr_o  ( PDM_Addr   ),

-    .RdData_i( PDM_RdData ),

-

-    //--- User (packet) interface

-    .Rx_mac_ra  ( Rx_mac_ra   ),

-    .Rx_mac_rd  ( Rx_mac_rd   ),

-    .Rx_mac_data( Rx_mac_data ),

-    .Rx_mac_BE  ( Rx_mac_BE   ),

-    .Rx_mac_pa  ( Rx_mac_pa   ),

-    .Rx_mac_sop ( Rx_mac_sop  ),

-    .Rx_mac_err ( Rx_mac_err  ),

-    .Rx_mac_eop ( Rx_mac_eop  ),

-

-    .Tx_mac_wa  ( Tx_mac_wa   ),

-    .Tx_mac_wr  ( Tx_mac_wr   ),

-    .Tx_mac_data( Tx_mac_data ),

-    .Tx_mac_BE  ( Tx_mac_BE   ),

-    .Tx_mac_sop ( Tx_mac_sop  ),

-    .Tx_mac_eop ( Tx_mac_eop  )

-  );

-

-  //--- Simple Wishbone client ----------------------------------------------

-

-  reg [15:0] Reg1;

-  reg [15:0] Reg2;

-

-  reg        WB_ACK_Reg;

-  reg [15:0] WB_DAT_Reg;

-

-  always @( negedge Reset_n or posedge Clk )

-    if ( ~Reset_n )

-      begin

-        WB_ACK_Reg <= 0;

-        WB_DAT_Reg <= 'b0;

-

-        Reg1 <= 16'h1234;

-        Reg2 <= 16'hABCD;

-      end

-    else

-      begin

-        WB_ACK_Reg <= 0;

-        if ( WB_CYC & ~( WB_STB_ETH | WB_STB_PG | WB_STB_PDM ) )

-          begin

-            WB_ACK_Reg <= 1;

-            if ( WB_WE )

-              begin

-                if ( WB_ADR[0] )

-                  Reg2 <= WB_DAT_Wr;

-                else

-                  Reg1 <= WB_DAT_Wr;

-              end

-            else

-              begin

-                if ( WB_ADR[0] )

-                  WB_DAT_Reg <= Reg2;

-                else

-                  WB_DAT_Reg <= Reg1;

-              end

-          end

-      end

-

-  //--- DUT - Ethernet Core -------------------------------------------------

-

-  wire [15:0] WB_DAT_Rd_ETH;

-  wire        WB_ACK_ETH;

-

-  wire [2:0] Speed;

-

-  MAC_top dut(

-    // System signals

-    .Clk_125M( Clk_125M ),

-    .Clk_user( Clk      ),

-    .Speed   ( Speed    ),

-

-    // Wishbone compliant core host interface

-    .RST_I( ~Reset_n ),

-    .CLK_I( Clk     ),

-    .STB_I( WB_STB_ETH    ),

-    .CYC_I( WB_CYC        ),

-    .ADR_I( WB_ADR[6:0]   ),

-    .WE_I ( WB_WE         ),

-    .DAT_I( WB_DAT_Wr     ),

-    .DAT_O( WB_DAT_Rd_ETH ),

-    .ACK_O( WB_ACK_ETH    ),

-

-    // User (packet) interface

-    .Rx_mac_ra  ( Rx_mac_ra   ),

-    .Rx_mac_rd  ( Rx_mac_rd   ),

-    .Rx_mac_data( Rx_mac_data ),

-    .Rx_mac_BE  ( Rx_mac_BE   ),

-    .Rx_mac_pa  ( Rx_mac_pa   ),

-    .Rx_mac_sop ( Rx_mac_sop  ),

-    .Rx_mac_err ( Rx_mac_err  ),

-    .Rx_mac_eop ( Rx_mac_eop  ),

-

-    .Tx_mac_wa  ( Tx_mac_wa   ),

-    .Tx_mac_wr  ( Tx_mac_wr   ),

-    .Tx_mac_data( Tx_mac_data ),

-    .Tx_mac_BE  ( Tx_mac_BE   ),

-    .Tx_mac_sop ( Tx_mac_sop  ),

-    .Tx_mac_eop ( Tx_mac_eop  ),

-

-    // PHY interface (GMII/MII)

-    .Gtx_clk( PHY_GTX_CLK  ), // Used only in GMII mode

-    .Rx_clk ( PHY_RXC      ),

-    .Tx_clk ( PHY_TXC      ),  // Used only in MII mode

-    .Tx_er  ( PHY_TXER     ),

-    .Tx_en  ( PHY_TXEN     ),

-    .Txd    ( PHY_TXD      ),

-    .Rx_er  ( PHY_RXER     ),

-    .Rx_dv  ( PHY_RXDV     ),

-    .Rxd    ( PHY_RXD      ),

-    .Crs    ( PHY_CRS      ),

-    .Col    ( PHY_COL      ),

-

-    // MDIO interface (to PHY)

-    .Mdio( PHY_MDIO ),

-    .Mdc ( PHY_MDC  )

-  );

-

-  //--- Combination of Wishbone read data and acknowledge -------------------

-

-  assign WB_DAT_Rd = ({16{WB_ACK_Reg}} & WB_DAT_Reg   ) |

-                     ({16{WB_ACK_PDM}} & WB_DAT_Rd_PDM) |

-                     ({16{WB_ACK_PG }} & WB_DAT_Rd_PG ) |

-                     ({16{WB_ACK_ETH}} & WB_DAT_Rd_ETH);

-

-  assign WB_ACK = WB_ACK_Reg | WB_ACK_PDM | WB_ACK_PG | WB_ACK_ETH;

-

-  assign PHY_RESET_n = Reset_n;                 

-

-endmodule

diff --git a/eth/demo/verilog/demo_packet_descriptor_memory.v b/eth/demo/verilog/demo_packet_descriptor_memory.v
deleted file mode 100644
index a5588a7d1..000000000
--- a/eth/demo/verilog/demo_packet_descriptor_memory.v
+++ /dev/null
@@ -1,384 +0,0 @@
-module demo_packet_descriptor_memory(

-  Reset_n,

-  Clk,

-

-  //--- Wishbone interface

-  STB_I,

-  CYC_I,

-  ADR_I,

-  WE_I, 

-  DAT_I,

-  DAT_O,

-  ACK_O,

-

-  //--- Packet Generator interface

-  // RdData_o is always valid exactly one clock after Addr_i changes

-  // and Rd_i is asserted

-  Rd_i,

-  Addr_i,

-  RdData_o

-);

-

-  input         Reset_n;

-  input         Clk;

-

-  //--- Wishbone interface

-  input         STB_I;

-  input         CYC_I;

-  input [14:0]  ADR_I;

-  input         WE_I;

-  input [15:0]  DAT_I;

-  output [15:0] DAT_O;

-  output        ACK_O;

-

-  //--- Packet Generator interface

-  // RdData_o is always valid exactly one clock after Addr_i changes

-  // and Rd_i is asserted

-  input         Rd_i;

-  input [13:0]  Addr_i;

-  output [31:0] RdData_o;

-

-  //-------------------------------------------------------------------------

-  // Local declarations

-  //-------------------------------------------------------------------------

-

-  reg ACK_O;

-

-  //-------------------------------------------------------------------------

-

-  wire [15:0] WrDataA = DAT_I;

-  wire [15:0] RdDataA;

-  wire [31:0] RdDataB;

-

-  assign DAT_O = RdDataA;

-  assign RdData_o = RdDataB;

-

-  wire WB_Access = STB_I & CYC_I;

-  wire WB_AccessClock1;

-  reg  WB_AccessClock2;

-

-  assign WB_AccessClock1 = WB_Access & ~WB_AccessClock2;

-

-  always @( negedge Reset_n or posedge Clk )

-    if ( ~Reset_n )

-      begin

-        WB_AccessClock2 <= 0;

-        ACK_O <= 0;

-      end

-    else

-      begin

-        WB_AccessClock2 <= WB_Access;

-        ACK_O <= WB_AccessClock1;

-      end

-

-  //-------------------------------------------------------------------------

-  // Instantiation of sub-modules

-  //-------------------------------------------------------------------------

-

-  //--- Instantiation of Xilinx 16 Kbit Dual Port Memory --------------------

-

-  RAMB16_S1_S2 RAMB16_S1_S2_bit0 (

-    .DOA( RdDataA[0] ),

-    .DOB( { RdDataB[0], RdDataB[16+0] } ),

-

-    .ADDRA( ADR_I[13:0]     ),

-    .DIA  ( WrDataA[0] ),

-    .ENA  ( WB_AccessClock1 ),

-    .CLKA ( Clk             ),

-    .WEA  ( WE_I            ),

-    .SSRA ( 1'b0            ),

-

-    .ADDRB( Addr_i[12:0] ),

-    .DIB  ( 2'b00        ),

-    .ENB  ( Rd_i         ),

-    .CLKB ( Clk          ),

-    .WEB  ( 1'b0         ),

-    .SSRB ( 1'b0         )

-  );

-

-  RAMB16_S1_S2 RAMB16_S1_S2_bit1 (

-    .DOA( RdDataA[1] ),

-    .DOB( { RdDataB[1], RdDataB[16+1] } ),

-

-    .ADDRA( ADR_I[13:0]     ),

-    .DIA  ( WrDataA[1] ),

-    .ENA  ( WB_AccessClock1 ),

-    .CLKA ( Clk             ),

-    .WEA  ( WE_I            ),

-    .SSRA ( 1'b0            ),

-

-    .ADDRB( Addr_i[12:0] ),

-    .DIB  ( 2'b00        ),

-    .ENB  ( Rd_i         ),

-    .CLKB ( Clk          ),

-    .WEB  ( 1'b0         ),

-    .SSRB ( 1'b0         )

-  );

-

-  RAMB16_S1_S2 RAMB16_S1_S2_bit2 (

-    .DOA( RdDataA[2] ),

-    .DOB( { RdDataB[2], RdDataB[16+2] } ),

-

-    .ADDRA( ADR_I[13:0]     ),

-    .DIA  ( WrDataA[2] ),

-    .ENA  ( WB_AccessClock1 ),

-    .CLKA ( Clk             ),

-    .WEA  ( WE_I            ),

-    .SSRA ( 1'b0            ),

-

-    .ADDRB( Addr_i[12:0] ),

-    .DIB  ( 2'b00        ),

-    .ENB  ( Rd_i         ),

-    .CLKB ( Clk          ),

-    .WEB  ( 1'b0         ),

-    .SSRB ( 1'b0         )

-  );

-

-  RAMB16_S1_S2 RAMB16_S1_S2_bit3 (

-    .DOA( RdDataA[3] ),

-    .DOB( { RdDataB[3], RdDataB[16+3] } ),

-

-    .ADDRA( ADR_I[13:0]     ),

-    .DIA  ( WrDataA[3] ),

-    .ENA  ( WB_AccessClock1 ),

-    .CLKA ( Clk             ),

-    .WEA  ( WE_I            ),

-    .SSRA ( 1'b0            ),

-

-    .ADDRB( Addr_i[12:0] ),

-    .DIB  ( 2'b00        ),

-    .ENB  ( Rd_i         ),

-    .CLKB ( Clk          ),

-    .WEB  ( 1'b0         ),

-    .SSRB ( 1'b0         )

-  );

-

-  RAMB16_S1_S2 RAMB16_S1_S2_bit4 (

-    .DOA( RdDataA[4] ),

-    .DOB( { RdDataB[4], RdDataB[16+4] } ),

-

-    .ADDRA( ADR_I[13:0]     ),

-    .DIA  ( WrDataA[4] ),

-    .ENA  ( WB_AccessClock1 ),

-    .CLKA ( Clk             ),

-    .WEA  ( WE_I            ),

-    .SSRA ( 1'b0            ),

-

-    .ADDRB( Addr_i[12:0] ),

-    .DIB  ( 2'b00        ),

-    .ENB  ( Rd_i         ),

-    .CLKB ( Clk          ),

-    .WEB  ( 1'b0         ),

-    .SSRB ( 1'b0         )

-  );

-

-  RAMB16_S1_S2 RAMB16_S1_S2_bit5 (

-    .DOA( RdDataA[5] ),

-    .DOB( { RdDataB[5], RdDataB[16+5] } ),

-

-    .ADDRA( ADR_I[13:0]     ),

-    .DIA  ( WrDataA[5] ),

-    .ENA  ( WB_AccessClock1 ),

-    .CLKA ( Clk             ),

-    .WEA  ( WE_I            ),

-    .SSRA ( 1'b0            ),

-

-    .ADDRB( Addr_i[12:0] ),

-    .DIB  ( 2'b00        ),

-    .ENB  ( Rd_i         ),

-    .CLKB ( Clk          ),

-    .WEB  ( 1'b0         ),

-    .SSRB ( 1'b0         )

-  );

-

-  RAMB16_S1_S2 RAMB16_S1_S2_bit6 (

-    .DOA( RdDataA[6] ),

-    .DOB( { RdDataB[6], RdDataB[16+6] } ),

-

-    .ADDRA( ADR_I[13:0]     ),

-    .DIA  ( WrDataA[6] ),

-    .ENA  ( WB_AccessClock1 ),

-    .CLKA ( Clk             ),

-    .WEA  ( WE_I            ),

-    .SSRA ( 1'b0            ),

-

-    .ADDRB( Addr_i[12:0] ),

-    .DIB  ( 2'b00        ),

-    .ENB  ( Rd_i         ),

-    .CLKB ( Clk          ),

-    .WEB  ( 1'b0         ),

-    .SSRB ( 1'b0         )

-  );

-

-  RAMB16_S1_S2 RAMB16_S1_S2_bit7 (

-    .DOA( RdDataA[7] ),

-    .DOB( { RdDataB[7], RdDataB[16+7] } ),

-

-    .ADDRA( ADR_I[13:0]     ),

-    .DIA  ( WrDataA[7] ),

-    .ENA  ( WB_AccessClock1 ),

-    .CLKA ( Clk             ),

-    .WEA  ( WE_I            ),

-    .SSRA ( 1'b0            ),

-

-    .ADDRB( Addr_i[12:0] ),

-    .DIB  ( 2'b00        ),

-    .ENB  ( Rd_i         ),

-    .CLKB ( Clk          ),

-    .WEB  ( 1'b0         ),

-    .SSRB ( 1'b0         )

-  );

-

-  RAMB16_S1_S2 RAMB16_S1_S2_bit8 (

-    .DOA( RdDataA[8] ),

-    .DOB( { RdDataB[8], RdDataB[16+8] } ),

-

-    .ADDRA( ADR_I[13:0]     ),

-    .DIA  ( WrDataA[8] ),

-    .ENA  ( WB_AccessClock1 ),

-    .CLKA ( Clk             ),

-    .WEA  ( WE_I            ),

-    .SSRA ( 1'b0            ),

-

-    .ADDRB( Addr_i[12:0] ),

-    .DIB  ( 2'b00        ),

-    .ENB  ( Rd_i         ),

-    .CLKB ( Clk          ),

-    .WEB  ( 1'b0         ),

-    .SSRB ( 1'b0         )

-  );

-

-  RAMB16_S1_S2 RAMB16_S1_S2_bit9 (

-    .DOA( RdDataA[9] ),

-    .DOB( { RdDataB[9], RdDataB[16+9] } ),

-

-    .ADDRA( ADR_I[13:0]     ),

-    .DIA  ( WrDataA[9] ),

-    .ENA  ( WB_AccessClock1 ),

-    .CLKA ( Clk             ),

-    .WEA  ( WE_I            ),

-    .SSRA ( 1'b0            ),

-

-    .ADDRB( Addr_i[12:0] ),

-    .DIB  ( 2'b00        ),

-    .ENB  ( Rd_i         ),

-    .CLKB ( Clk          ),

-    .WEB  ( 1'b0         ),

-    .SSRB ( 1'b0         )

-  );

-

-  RAMB16_S1_S2 RAMB16_S1_S2_bit10 (

-    .DOA( RdDataA[10] ),

-    .DOB( { RdDataB[10], RdDataB[16+10] } ),

-

-    .ADDRA( ADR_I[13:0]     ),

-    .DIA  ( WrDataA[10] ),

-    .ENA  ( WB_AccessClock1 ),

-    .CLKA ( Clk             ),

-    .WEA  ( WE_I            ),

-    .SSRA ( 1'b0            ),

-

-    .ADDRB( Addr_i[12:0] ),

-    .DIB  ( 2'b00        ),

-    .ENB  ( Rd_i         ),

-    .CLKB ( Clk          ),

-    .WEB  ( 1'b0         ),

-    .SSRB ( 1'b0         )

-  );

-

-  RAMB16_S1_S2 RAMB16_S1_S2_bit11 (

-    .DOA( RdDataA[11] ),

-    .DOB( { RdDataB[11], RdDataB[16+11] } ),

-

-    .ADDRA( ADR_I[13:0]     ),

-    .DIA  ( WrDataA[11] ),

-    .ENA  ( WB_AccessClock1 ),

-    .CLKA ( Clk             ),

-    .WEA  ( WE_I            ),

-    .SSRA ( 1'b0            ),

-

-    .ADDRB( Addr_i[12:0] ),

-    .DIB  ( 2'b00        ),

-    .ENB  ( Rd_i         ),

-    .CLKB ( Clk          ),

-    .WEB  ( 1'b0         ),

-    .SSRB ( 1'b0         )

-  );

-

-  RAMB16_S1_S2 RAMB16_S1_S2_bit12 (

-    .DOA( RdDataA[12] ),

-    .DOB( { RdDataB[12], RdDataB[16+12] } ),

-

-    .ADDRA( ADR_I[13:0]     ),

-    .DIA  ( WrDataA[12] ),

-    .ENA  ( WB_AccessClock1 ),

-    .CLKA ( Clk             ),

-    .WEA  ( WE_I            ),

-    .SSRA ( 1'b0            ),

-

-    .ADDRB( Addr_i[12:0] ),

-    .DIB  ( 2'b00        ),

-    .ENB  ( Rd_i         ),

-    .CLKB ( Clk          ),

-    .WEB  ( 1'b0         ),

-    .SSRB ( 1'b0         )

-  );

-

-  RAMB16_S1_S2 RAMB16_S1_S2_bit13 (

-    .DOA( RdDataA[13] ),

-    .DOB( { RdDataB[13], RdDataB[16+13] } ),

-

-    .ADDRA( ADR_I[13:0]     ),

-    .DIA  ( WrDataA[13] ),

-    .ENA  ( WB_AccessClock1 ),

-    .CLKA ( Clk             ),

-    .WEA  ( WE_I            ),

-    .SSRA ( 1'b0            ),

-

-    .ADDRB( Addr_i[12:0] ),

-    .DIB  ( 2'b00        ),

-    .ENB  ( Rd_i         ),

-    .CLKB ( Clk          ),

-    .WEB  ( 1'b0         ),

-    .SSRB ( 1'b0         )

-  );

-

-  RAMB16_S1_S2 RAMB16_S1_S2_bit14 (

-    .DOA( RdDataA[14] ),

-    .DOB( { RdDataB[14], RdDataB[16+14] } ),

-

-    .ADDRA( ADR_I[13:0]     ),

-    .DIA  ( WrDataA[14] ),

-    .ENA  ( WB_AccessClock1 ),

-    .CLKA ( Clk             ),

-    .WEA  ( WE_I            ),

-    .SSRA ( 1'b0            ),

-

-    .ADDRB( Addr_i[12:0] ),

-    .DIB  ( 2'b00        ),

-    .ENB  ( Rd_i         ),

-    .CLKB ( Clk          ),

-    .WEB  ( 1'b0         ),

-    .SSRB ( 1'b0         )

-  );

-

-  RAMB16_S1_S2 RAMB16_S1_S2_bit15 (

-    .DOA( RdDataA[15] ),

-    .DOB( { RdDataB[15], RdDataB[16+15] } ),

-

-    .ADDRA( ADR_I[13:0]     ),

-    .DIA  ( WrDataA[15] ),

-    .ENA  ( WB_AccessClock1 ),

-    .CLKA ( Clk             ),

-    .WEA  ( WE_I            ),

-    .SSRA ( 1'b0            ),

-

-    .ADDRB( Addr_i[12:0] ),

-    .DIB  ( 2'b00        ),

-    .ENB  ( Rd_i         ),

-    .CLKB ( Clk          ),

-    .WEB  ( 1'b0         ),

-    .SSRB ( 1'b0         )

-  );

-

-endmodule

diff --git a/eth/demo/verilog/demo_packet_generator.v b/eth/demo/verilog/demo_packet_generator.v
deleted file mode 100644
index 22ad52b4c..000000000
--- a/eth/demo/verilog/demo_packet_generator.v
+++ /dev/null
@@ -1,274 +0,0 @@
-module demo_packet_generator(

-  Reset_n,

-  Clk,

-

-  //--- Wishbone interface

-  STB_I,

-  CYC_I,

-  ADR_I,

-  WE_I,

-  DAT_I,

-  DAT_O,

-  ACK_O,

-

-  //--- Packet Descriptor Memory interface

-  // RdData_i is always valid exactly one clock after Addr_o changes

-  // and Rd_o is asserted

-  Rd_o,

-  Addr_o,

-  RdData_i,

-

-  //--- User (packet) interface

-  Rx_mac_ra,

-  Rx_mac_rd,

-  Rx_mac_data,

-  Rx_mac_BE,

-  Rx_mac_pa,

-  Rx_mac_sop,

-  Rx_mac_err,

-  Rx_mac_eop,

-

-  Tx_mac_wa,

-  Tx_mac_wr,

-  Tx_mac_data,

-  Tx_mac_BE,

-  Tx_mac_sop,

-  Tx_mac_eop

-);

-

-  input         Reset_n;

-  input         Clk;

-

-  //--- Wishbone interface

-  input         STB_I;

-  input         CYC_I;

-  input [1:0]   ADR_I;

-  input         WE_I;

-  input [15:0]  DAT_I;

-  output [15:0] DAT_O;

-  output        ACK_O;

-

-  //--- Packet Generator interface

-  // RdData_o is always valid exactly one clock after Addr_o changes

-  // and Rd_o is asserted

-  output        Rd_o;

-  output [13:0] Addr_o;

-  input [31:0]  RdData_i;

-

-  //--- User (packet) interface

-  input         Rx_mac_ra;

-  output        Rx_mac_rd;

-  input [31:0]  Rx_mac_data;

-  input [1:0]   Rx_mac_BE;

-  input         Rx_mac_pa;

-  input         Rx_mac_sop;

-  input         Rx_mac_err;

-  input         Rx_mac_eop;

-

-  input         Tx_mac_wa;

-  output        Tx_mac_wr;

-  output [31:0] Tx_mac_data;

-  output [1:0]  Tx_mac_BE;

-  output        Tx_mac_sop;

-  output        Tx_mac_eop;

-

-  //-------------------------------------------------------------------------

-  // Local declarations

-  //-------------------------------------------------------------------------

-

-  reg        ACK_O;

-  reg [15:0] DAT_O;

-

-  reg        Rd_o;

-  reg        Tx_mac_wr;

-  reg [1:0]  Tx_mac_BE;

-  reg        Tx_mac_sop;

-  reg        Tx_mac_eop;

-

-  //--- Wishbone interface --------------------------------------------------

-

-  reg [1:0] PG_CFG;

-  wire      PG_Enable = PG_CFG[0];

-  

-  always @( negedge Reset_n or posedge Clk )

-    if ( ~Reset_n )

-      begin

-        ACK_O <= 0;

-        DAT_O <= 'b0;

-

-        PG_CFG <= 2'h0;

-      end

-    else

-      begin

-        ACK_O <= 0;

-        if ( CYC_I & STB_I )

-          begin

-            ACK_O <= ~ACK_O; // Generate single cycle pulse!

-            if ( WE_I )

-              begin

-                PG_CFG <= DAT_I;

-              end

-            else

-              begin

-                DAT_O[1:0] <= PG_CFG;

-              end

-          end

-      end

-

-  //--- Packet Generator FSM ------------------------------------------------

-

-  parameter  PG_FSM_STATE_IDLE               = 3'h0;

-  parameter  PG_FSM_STATE_LD_DESC_1          = 3'h1;

-  parameter  PG_FSM_STATE_LD_DESC_2          = 3'h2;

-  parameter  PG_FSM_STATE_RD_HEADER          = 3'h3;

-  parameter  PG_FSM_STATE_PAYLOAD_SEQ_NUMBER = 3'h4;

-  parameter  PG_FSM_STATE_PAYLOAD            = 3'h5;

-  parameter  PG_FSM_STATE_DONE               = 3'h6;

-  reg [2:0]  PG_FSM_State;

-

-  reg [9:0] DescHigh; // Selects currente descriptor

-  reg [3:0] DescLow; // Index into a single descriptor (16 entries)

-

-  reg        PDM_CFG1_LAST;

-  reg [3:0]  PDM_CFG1_REPEAT;

-  reg [3:0]  PDM_CFG1_HDRLEN;

-  reg [15:0] PDM_CFG2_PAYLDLEN;

-

-  reg [31:0] Tx_mac_data_reg;

-  reg        WriteHeader;

-  reg [15:0] PayloadRemaining;

-  reg [31:0] PacketSequenceNumber;

-  reg [31:0] Payload;

-  

-  always @( negedge Reset_n or posedge Clk )

-    if ( ~Reset_n )

-      begin

-        PG_FSM_State <= PG_FSM_STATE_IDLE;

-

-        Rd_o <= 0;

-

-        DescHigh <= 10'b0;

-        DescLow  <= 4'b0;

-

-        Tx_mac_wr  <= 0;

-        Tx_mac_sop <= 0;

-        Tx_mac_eop <= 0;

-        Tx_mac_BE  <= 2'b00;

-

-        Tx_mac_data_reg <= 32'b0;

-        WriteHeader <= 0;

-        PayloadRemaining <= 16'd0;

-

-        PacketSequenceNumber <= 32'd0;

-        Payload <= 32'h0;

-

-        { PDM_CFG1_HDRLEN, PDM_CFG1_REPEAT, PDM_CFG1_LAST, PDM_CFG2_PAYLDLEN } <= 'b0;

-      end

-    else

-      begin

-        casez ( PG_FSM_State )

-          PG_FSM_STATE_IDLE:

-            if ( PG_Enable )

-              begin

-                PG_FSM_State <= PG_FSM_STATE_LD_DESC_1;

-                Rd_o <= 1;

-              end

-            else

-              begin

-                DescHigh <= 10'b0;

-                DescLow  <= 4'b0;

-              end

-

-          PG_FSM_STATE_LD_DESC_1:

-            begin

-              PG_FSM_State <= PG_FSM_STATE_LD_DESC_2;

-

-              DescLow <= DescLow + 1;

-            end

-

-          PG_FSM_STATE_LD_DESC_2:

-            begin

-              PG_FSM_State <= PG_FSM_STATE_RD_HEADER;

-

-              { PDM_CFG1_LAST, PDM_CFG1_REPEAT, PDM_CFG1_HDRLEN, PDM_CFG2_PAYLDLEN } <=

-                { RdData_i[31], RdData_i[23:20], RdData_i[19:16], RdData_i[15:0] };

-            end

-

-          PG_FSM_STATE_RD_HEADER:

-            begin

-              Tx_mac_wr <= 0;

-              if ( Tx_mac_wa )

-                begin

-                  // Space in Tx FIFO - write next header word

-                  DescLow <= DescLow + 1;

-                  Tx_mac_wr <= 1;

-                  Tx_mac_sop <= ( DescLow == 1 ); // Assert SOP on first header word

-                  WriteHeader <= 1;

-                  if ( DescLow == PDM_CFG1_HDRLEN )

-                    begin

-                      // The requested number of header words has been read

-                      // - proceed to generate packet payload

-                      PG_FSM_State <= PG_FSM_STATE_PAYLOAD_SEQ_NUMBER;

-                      PayloadRemaining <= PDM_CFG2_PAYLDLEN;

-                    end

-                end

-            end

-

-          PG_FSM_STATE_PAYLOAD_SEQ_NUMBER:

-            begin

-              WriteHeader <= 0;

-              Tx_mac_data_reg <= PacketSequenceNumber;

-              Tx_mac_wr <= 0;

-              Tx_mac_sop <= 0;

-              if ( Tx_mac_wa )

-                begin

-                  Tx_mac_wr <= 1;

-                  PG_FSM_State <= PG_FSM_STATE_PAYLOAD;

-                  Payload <= 32'h01020304;

-                  PayloadRemaining <= PayloadRemaining - 4;

-                end

-            end

-

-          PG_FSM_STATE_PAYLOAD:

-            begin

-              Tx_mac_data_reg <= Payload;

-              Tx_mac_wr <= 0;

-              if ( Tx_mac_wa )

-                begin

-                  Tx_mac_wr <= 1;

-                  Tx_mac_data_reg <= Payload;

-                  Payload[31:24] <= Payload[31:24] + 8'h04;

-                  Payload[23:16] <= Payload[23:16] + 8'h04;

-                  Payload[15: 8] <= Payload[15: 8] + 8'h04;

-                  Payload[ 7: 0] <= Payload[ 7: 0] + 8'h04;

-                  PayloadRemaining <= PayloadRemaining - 4;

-                  if ( PayloadRemaining <= 4 )

-                    begin

-                      PG_FSM_State <= PG_FSM_STATE_DONE;

-

-                      Tx_mac_eop <= 1;

-                      // Indicate how many bytes are valid in this last transfer

-                      Tx_mac_BE <= PayloadRemaining[1:0];

-                    end

-                end

-            end

-

-          PG_FSM_STATE_DONE:

-            begin

-              // TBD: Add support for REPEAT, NEXT & LAST!

-              Tx_mac_wr <= 0;

-              Tx_mac_eop <= 0;

-            end

-        endcase

-      end

-

-  //-------------------------------------------------------------------------

-

-  assign Tx_mac_data = WriteHeader ?

-                       RdData_i : Tx_mac_data_reg;

-

-  assign Addr_o = { DescHigh, DescLow };

-

-  assign Rx_mac_rd = 0;

-

-endmodule

diff --git a/eth/demo/verilog/demo_uart.v b/eth/demo/verilog/demo_uart.v
deleted file mode 100644
index ba4a3c35c..000000000
--- a/eth/demo/verilog/demo_uart.v
+++ /dev/null
@@ -1,235 +0,0 @@
-module demo_uart(

-  Reset_n,

-  Clk,

-

-  // Interface to UART PHY (RS232 level converter)

-  RXD_i,

-  TXD_o,

-

-  // Clk is divided by (Prescaler+1) to generate 16x the bitrate

-  Prescaler_i,

-

-  // Pulsed when RxData is valid

-  RxValid_o,

-  RxData_o,

-

-  // Asserted when ready for a new Tx byte

-  TxReady_o,

-

-  // Pulsed when TxData is valid

-  TxValid_i,

-  TxData_i

-);

-

-  input        Reset_n;

-  input        Clk;

-

-  // Interface to UART PHY (RS232 level converter)

-  input        RXD_i;

-  output       TXD_o;

-

-  // Clk is divided by (Prescaler+1) to generate 16x the bitrate

-  input [15:0] Prescaler_i;

-

-  // Pulsed when RxData is valid

-  output       RxValid_o;

-  output [7:0] RxData_o;

-

-  // Asserted when ready for a new Tx byte

-  output       TxReady_o;

-

-  // Pulsed when TxData is valid

-  input        TxValid_i;

-  input [7:0]  TxData_i;

-

-  //-------------------------------------------------------------------------

-  // Local declarations

-  //-------------------------------------------------------------------------

-

-  reg          TXD_o;

-  reg          RxValid_o;

-  reg [7:0]    RxData_o;

-  reg          TxReady_o;

-

-  //-------------------------------------------------------------------------

-  // Instantiation of sub-modules

-  //-------------------------------------------------------------------------

-

-  //--- Prescaler generating 16x bitrate clock ------------------------------

-

-  reg        Clk_16x;

-  reg [15:0] Prescaler;

-

-  always @( negedge Reset_n or posedge Clk )

-    if ( ~Reset_n )

-      begin

-        Prescaler <= 0;

-        Clk_16x <= 0;

-      end

-    else

-      begin

-        if ( Prescaler == Prescaler_i )

-          begin

-            Prescaler <= 0;

-            Clk_16x <= 1;

-          end

-        else

-          begin

-            Prescaler <= Prescaler + 1;

-            Clk_16x <= 0;

-          end

-      end

-

-  //--- Transmitter logic ---------------------------------------------------

-

-  reg [3:0] TxCounter;

-  reg       TxSendBit;

-

-  always @( negedge Reset_n or posedge Clk )

-    if ( ~Reset_n )

-      begin

-        TxCounter <= 0;

-        TxSendBit <= 0;

-      end

-    else

-      begin

-        TxSendBit <= 0;

-        if ( Clk_16x )

-          begin    

-            if ( TxCounter == 15 )

-              begin

-                TxCounter <= 0;

-                TxSendBit <= 1;

-              end

-            else

-              TxCounter <= TxCounter + 1;

-          end

-      end

-

-  reg [7:0] TxData_reg;

-  reg [3:0] TxBitCnt;

-  always @( negedge Reset_n or posedge Clk )

-    if ( ~Reset_n )

-      begin

-        TXD_o      <= 1;

-        TxReady_o  <= 1;

-        TxData_reg <= 0;

-        TxBitCnt   <= 0;

-      end

-    else

-      begin

-        if ( TxReady_o )

-          begin

-            if ( TxValid_i )

-              begin

-                TxReady_o  <= 0;

-                TxData_reg <= TxData_i;

-                TxBitCnt   <= 0;

-              end

-          end

-        else

-          begin

-            if ( TxSendBit )

-              begin

-                // Only do anything on bit boundaries

-                casez ( TxBitCnt )

-                  0: // Tx START bit

-                    TXD_o <= 0;

-                  10: // Tx second STOP bit

-                    // Now we're done

-                    TxReady_o <= 1;

-                  default: // Tx data bit + first stop bit

-                    begin

-                      TXD_o <= TxData_reg[0];

-                      TxData_reg <= { 1'b1, TxData_reg[7:1] };

-                    end

-                endcase

-                

-                TxBitCnt <= TxBitCnt+1;

-              end

-          end

-      end

-

-  //--- Receiver logic ------------------------------------------------------

-

-  reg       RxHunt;

-  reg [3:0] RxCounter;

-  reg       RxSampleBit;

-  reg       RxDone;

-

-  always @( negedge Reset_n or posedge Clk )

-    if ( ~Reset_n )

-      begin

-        RxCounter   <= 0;

-        RxSampleBit <= 0;

-

-        RxHunt <= 1;

-      end

-    else

-      begin

-        RxSampleBit <= 0;

-

-        if ( RxDone )

-          RxHunt <= 1;

-

-        if ( Clk_16x )

-          begin

-            if ( RxHunt )

-              begin

-                if ( RXD_i == 0 )

-                  begin

-                    // Receiving start bit!

-                    RxHunt <= 0;

-                    // Reset 16x bit counter

-                    RxCounter <= 0;

-                  end

-              end

-            else

-              begin

-                RxCounter <= RxCounter + 1;

-                if ( RxCounter == 7 )

-                  // In middle of Rx bit in next cycle

-                  RxSampleBit <= 1;

-              end

-          end

-      end

-

-  reg [3:0] RxBitCount;

-

-  always @( negedge Reset_n or posedge Clk )

-    if ( ~Reset_n )

-      begin

-        RxValid_o <= 0;

-        RxData_o <= 'b0;

-        RxBitCount <= 0;

-        RxDone <= 0;

-      end

-    else

-      begin

-        RxValid_o <= 0;

-        RxDone <= 0;

-

-        if ( RxSampleBit )

-          begin

-            RxBitCount <= RxBitCount + 1;

-

-            casez ( RxBitCount )

-              0: // START bit - just ignore it

-                ;

-              9: // STOP bit - indicate we're ready again

-                begin

-                  RxDone <= 1;

-                  RxBitCount <= 0;

-                end

-              default: // Rx Data bits

-                begin

-                  RxData_o <= { RXD_i, RxData_o[7:1] };

-                  if ( RxBitCount == 8 )

-                    // Last data bit just received

-                    RxValid_o <= 1;

-                end

-            endcase

-          end

-      end

-

-endmodule

diff --git a/eth/demo/verilog/demo_wishbone_master.v b/eth/demo/verilog/demo_wishbone_master.v
deleted file mode 100644
index b3c64fbcf..000000000
--- a/eth/demo/verilog/demo_wishbone_master.v
+++ /dev/null
@@ -1,376 +0,0 @@
-module demo_wishbone_master(

-  Reset_n,

-  Clk,

-

-  //--- UART interface

-

-  // Pulsed when RxData_i is valid

-  RxValid_i,

-  RxData_i,

-

-  // Asserted when ready for a new Tx byte

-  TxReady_i,

-

-  // Pulsed when TxData_o is valid

-  TxValid_o,

-  TxData_o,

-

-  //--- Wishbone interface

-  STB_ETH_O,

-  STB_PDM_O,

-  STB_PG_O,

-  CYC_O,

-  ADR_O,

-  WE_O, 

-  DAT_O,

-  DAT_I,

-  ACK_I

-);

-

-  input         Reset_n;

-  input         Clk;

-

-  //--- UART interface

-

-  // Pulsed when RxData_i is valid

-  input         RxValid_i;

-  input [7:0]   RxData_i;

-

-  // Asserted when ready for a new Tx byte

-  input         TxReady_i;

-

-  // Pulsed when TxData_o is valid

-  output        TxValid_o;

-  output [7:0]  TxData_o;

-

-  output        STB_ETH_O;

-  output        STB_PDM_O;

-  output        STB_PG_O;

-  output        CYC_O;

-  output [14:0] ADR_O;

-  output        WE_O;

-  output [15:0] DAT_O;

-  input [15:0]  DAT_I;

-  input         ACK_I;

-

-  //-------------------------------------------------------------------------

-  // Local declarations

-  //-------------------------------------------------------------------------

-

-  reg          TxValid_o;

-  reg [7:0]    TxData_o;

-  reg          STB_ETH_O;

-  reg          STB_PDM_O;

-  reg          STB_PG_O;

-  reg          CYC_O;

-  reg [14:0]   ADR_O;

-  reg          WE_O;

-  reg [15:0]   DAT_O;

-

-  //-------------------------------------------------------------------------

-  // Instantiation of sub-modules

-  //-------------------------------------------------------------------------

-

-  //--- Transmit FSM --------------------------------------------------------

-

-  parameter    TX_STATE_IDLE  = 0;

-  parameter    TX_STATE_INIT  = 1;

-  parameter    TX_STATE_OK    = 2;

-  parameter    TX_STATE_ERROR = 3;

-  parameter    TX_STATE_VALUE = 4;

-  parameter    TX_STATE_LF    = 5;

-

-  reg [2:0]    TxState;

-  reg [3:0]    TxIndex;

-  reg          TxLast;

-

-  wire [15:0]  TxValue16;

-  wire [3:0]   TxHexDigit;

-  wire [7:0]   TxHexChar;

-  reg          TxOK;

-  reg          TxERROR;

-  reg          TxValue;

-

-  always @( negedge Reset_n or posedge Clk )

-    if ( ~Reset_n )

-      begin

-        TxState   <= TX_STATE_INIT;

-        TxIndex   <= 0;

-        TxLast    <= 0;

-

-        TxValid_o <= 0;

-        TxData_o  <= 'b0;

-      end

-    else

-      begin

-        TxValid_o <= 0;

-

-        // Don't do anything in cycle following TxValid_o being pulsed

-        if ( ~TxValid_o )

-          begin

-            casez ( TxState )

-              TX_STATE_INIT:

-                casez ( TxIndex )

-                  0: TxData_o <= "R";

-                  1: TxData_o <= "E";

-                  2: TxData_o <= "A";

-                  3: TxData_o <= "D";

-                  4: TxData_o <= "Y";

-                  default: TxLast <= 1;

-                endcase

-              

-              TX_STATE_OK:

-                casez ( TxIndex )

-                  0: TxData_o <= "O";

-                  1: TxData_o <= "K";

-                  default: TxLast <= 1;

-                endcase

-

-              TX_STATE_ERROR:

-                casez ( TxIndex )

-                  0: TxData_o <= "E";

-                  1: TxData_o <= "R";

-                  2: TxData_o <= "R";

-                  3: TxData_o <= "O";

-                  4: TxData_o <= "R";

-                  default: TxLast <= 1;

-                endcase

-

-              TX_STATE_VALUE:

-                casez ( TxIndex )

-                  0,1,2,3: TxData_o <= TxHexChar;

-                  default: TxLast <= 1;

-                endcase

-

-              TX_STATE_LF:

-                ;

-

-              default:

-                begin

-                  if ( TxOK )

-                    TxState <= TX_STATE_OK;

-                  else if ( TxERROR )

-                    TxState <= TX_STATE_ERROR;

-                  else if ( TxValue )

-                    begin                         

-                      TxState <= TX_STATE_VALUE;

-                      TxIndex <= 0;

-                    end

-                end

-            endcase

-

-            if ( (TxState != TX_STATE_IDLE) & TxReady_i )

-              begin

-                TxValid_o <= 1;

-

-                if ( TxLast )

-                  begin

-                    if ( TxState == TX_STATE_LF )

-                      begin

-                        TxData_o <= 10; // LF

-                        TxState  <= TX_STATE_IDLE;

-                        TxIndex  <= 0;

-                        TxLast   <= 0;

-                      end

-                    else

-                      begin

-                        TxData_o <= 13; // CR

-                        TxState  <= TX_STATE_LF;

-                      end

-                  end

-                else

-                  TxIndex <= TxIndex + 1;

-              end

-          end

-      end

-

-  assign TxHexDigit = (TxIndex==0) ? TxValue16[15:12] :

-                      (TxIndex==1) ? TxValue16[11: 8] :

-                      (TxIndex==2) ? TxValue16[ 7: 4] :

-                                     TxValue16[ 3: 0];

-

-  assign TxHexChar = (TxHexDigit <= 9) ? (TxHexDigit + "0") :

-                                         (TxHexDigit + "A"-'hA);

-

-  //--- Receive FSM ---------------------------------------------------------

-

-  parameter RX_STATE_IDLE           = 0;

-  parameter RX_STATE_VALUE16_FIRST  = 1;

-  parameter RX_STATE_VALUE16        = 2;

-  parameter RX_STATE_COMMENT        = 3;

-  parameter RX_STATE_CMD            = 4;

-

-  reg [2:0] RxState;

-

-  wire IsWhiteSpace = ( RxData_i==" "  ) |

-                      ( RxData_i=="\t" ) |

-                      ( RxData_i==","  ) |

-                      ( RxData_i==10   ) |

-                      ( RxData_i==13   );

-  wire IsHexDigit = (( RxData_i >= "0" ) & ( RxData_i <= "9" )) |

-                    (( RxData_i >= "a" ) & ( RxData_i <= "f" )) |

-                      (( RxData_i >= "A" ) & ( RxData_i <= "F" ));

-  wire [3:0] RxHexValue =

-               (( RxData_i >= "0" ) & ( RxData_i <= "9" )) ? RxData_i[3:0] :

-               (( RxData_i >= "a" ) & ( RxData_i <= "f" )) ? (RxData_i-"a"+'hA) :

-               (( RxData_i >= "A" ) & ( RxData_i <= "F" )) ? (RxData_i-"A"+'hA) : 0;

-

-  reg [15:0] RxValue16;

-  reg        RxWrite;

-  reg        RxWrData;

-

-  reg [15:0] RegAddr;

-  reg [15:0] RegRdData;

-

-  assign     TxValue16 = RegRdData;

-

-  always @( negedge Reset_n or posedge Clk )

-    if ( ~Reset_n )

-      begin

-        RxState   <= RX_STATE_IDLE;

-

-        RxValue16 <= 16'h0;

-        RxWrite   <= 0;

-        RxWrData  <= 0;

-

-        RegAddr   <= 'b0;

-        RegRdData <= 'b0;

-

-        STB_ETH_O <= 0;

-        STB_PDM_O <= 0;

-        STB_PG_O  <= 0;

-        CYC_O     <= 0;

-        ADR_O     <= 0;

-        WE_O      <= 0;

-        DAT_O     <= 0;

-

-        TxOK      <= 0;

-        TxERROR   <= 0;

-        TxValue   <= 0;

-      end

-    else

-      begin

-        TxOK    <= 0;

-        TxERROR <= 0;

-        TxValue <= 0;

-

-        if ( RxState == RX_STATE_CMD )

-          begin

-            STB_ETH_O <= ( RegAddr[15:12] == 4'h0 );

-            STB_PG_O  <= ( RegAddr[15:12] == 4'h1 );

-            STB_PDM_O <= ( RegAddr[15]    == 1'b1 );

-

-            CYC_O <= 1;

-            ADR_O <= RegAddr[14:0];

-            WE_O  <= RxWrite;

-

-            if ( ACK_I )

-              begin

-                // Register transaction is completing!

-                CYC_O     <= 0;

-                STB_ETH_O <= 0;

-                STB_PDM_O <= 0;

-                STB_PG_O  <= 0;

-

-                // Latch data read in case of a read

-                RegRdData <= DAT_I;

-

-                if ( RxWrite )

-                  // Transaction was a register write

-                  TxOK <= 1;

-                else

-                  TxValue <= 1;

-

-                RxState <= RX_STATE_IDLE;

-              end

-          end

-        else if ( (TxState == TX_STATE_IDLE) & RxValid_i )

-          begin

-            // A byte has been received!

-

-            casez ( RxState )

-              RX_STATE_IDLE:

-                if ( (RxData_i == "w") | (RxData_i == "W") )

-                  begin

-                    // Write Register Command: W rrrr dddd

-                    RxState  <= RX_STATE_VALUE16_FIRST;

-                    RxWrite  <= 1;

-                    RxWrData <= 0;

-                  end

-                else if ( (RxData_i == "r") | (RxData_i == "R") )

-                  begin

-                    // Read Register Command: R rrrr

-                    RxState <= RX_STATE_VALUE16_FIRST;

-                    RxWrite <= 0;

-                  end

-                else if ( RxData_i == "/" )

-                  begin

-                    // Comment!

-                    RxState <= RX_STATE_COMMENT;

-                  end

-                else if ( ~IsWhiteSpace )

-                  // Unknown command!

-                  TxERROR <= 1;

-

-              RX_STATE_COMMENT:

-                if ( (RxData_i == 13) | (RxData_i == 10) )

-                  // CR or LF - end of comment

-                  RxState <= RX_STATE_IDLE;

-

-              RX_STATE_VALUE16_FIRST:

-                if ( IsHexDigit )

-                  begin

-                    RxValue16 <= { 12'b0, RxHexValue };

-                    RxState <= RX_STATE_VALUE16;

-                  end

-                else if ( ~IsWhiteSpace )

-                  begin

-                    // Unexpected character!

-                    TxERROR <= 1;

-                    RxState <= RX_STATE_IDLE;

-                  end

-

-              RX_STATE_VALUE16:

-                if ( IsHexDigit )

-                  RxValue16 <= { RxValue16[11:0], RxHexValue };

-                else if ( IsWhiteSpace )

-                  begin

-                    // Done collecting 16-bit value

-                    if ( RxWrite )

-                      begin

-                        // This is a register write

-                        if ( RxWrData )

-                          begin

-                            // Second time around - just received write data

-                            DAT_O   <= RxValue16;

-                            RxState <= RX_STATE_CMD;

-                          end

-                        else

-                          begin

-                            // Just received register address - expecting second argument

-                            RegAddr <= RxValue16;

-                            RxState <= RX_STATE_VALUE16_FIRST;

-                            RxWrData <= 1; // Now receive the write data

-                          end

-                      end

-                    else

-                      begin

-                        // This is a register read

-                        RegAddr <= RxValue16;

-                        RxState <= RX_STATE_CMD;

-                      end

-                  end

-                else

-                  begin

-                    // Unexpected character!

-                    TxERROR <= 1;

-                    RxState <= RX_STATE_IDLE;

-                  end

-

-              default:

-                TxERROR <= 1;

-            endcase

-          end

-      end

-  

-endmodule

diff --git a/eth/demo/verilog/tb_demo.v b/eth/demo/verilog/tb_demo.v
deleted file mode 100644
index c5a8a3f41..000000000
--- a/eth/demo/verilog/tb_demo.v
+++ /dev/null
@@ -1,348 +0,0 @@
-`timescale 1ns / 1ns

-

-module tb_demo;

-

-  //-------------------- Instantiate Xilinx glbl module ----------------------

-  // - this is needed to get ModelSim to work because e.g. I/O buffer models

-  //   refer directly to glbl.GTS and similar signals

-

-  wire GSR;

-  wire GTS;

-  xlnx_glbl glbl( .GSR( GSR ), .GTS( GTS ) );

-

-  reg  VLOG_ExitSignal = 0;

-  reg  Done = 0;

-  reg  Error = 0;

-

-  //-------------------------------------------------------------------------

-

-  reg        Reset_n;

-  reg        Clk_100M;

-  reg        Clk_125M;

-

-  wire       RS232_TXD;

-  wire       RS232_RXD;

-

-  wire       USB_TXD;

-  wire       USB_RXD;

-

-  //--- 10/100/1000BASE-T Ethernet PHY (MII/GMII)

-  wire       PHY_RESET_n;

-

-  wire       PHY_RXC;

-  wire [7:0] PHY_RXD;

-  wire       PHY_RXDV;

-  wire       PHY_RXER;

-

-  wire       PHY_GTX_CLK; // GMII only

-  wire       PHY_TXC;

-  wire [7:0] PHY_TXD;

-  wire       PHY_TXEN;

-  wire       PHY_TXER;

-

-  wire       PHY_COL = 0;

-  wire       PHY_CRS = 0;

-

-  wire       PHY_MDC;

-  wire       PHY_MDIO;

-

-  wire [1:4] LED;

-

-  reg [1:4]  Button = 4'b0000;

-

-  //-------------------------------------------------------------------------

-  // Local declarations

-  //-------------------------------------------------------------------------

-

-  //-------------------------------------------------------------------------

-  // Instantiation of sub-modules

-  //-------------------------------------------------------------------------

-

-  //--- DUT

-

-  demo demo(

-    .Reset_n ( Reset_n  ),

-    .Clk_100M( Clk_100M ),

-    .Clk_125M( Clk_125M ),

-

-    .RS232_TXD( RS232_TXD ),

-    .RS232_RXD( RS232_RXD ),

-

-    .USB_TXD( USB_TXD ),

-    .USB_RXD( USB_RXD ),

-

-    //--- 10/100/1000BASE-T Ethernet PHY (MII/GMII)

-    .PHY_RESET_n( PHY_RESET_n ),

-

-    .PHY_RXC ( PHY_RXC  ),

-    .PHY_RXD ( PHY_RXD  ),

-    .PHY_RXDV( PHY_RXDV ),

-    .PHY_RXER( PHY_RXER ),

-

-    .PHY_GTX_CLK( PHY_GTX_CLK ), // GMII only

-    .PHY_TXC    ( PHY_TXC  ),

-    .PHY_TXD    ( PHY_TXD  ),

-    .PHY_TXEN   ( PHY_TXEN ),

-    .PHY_TXER   ( PHY_TXER ),

-

-    .PHY_COL( PHY_COL ),

-    .PHY_CRS( PHY_CRS ),

-

-    .PHY_MDC ( PHY_MDC  ),

-    .PHY_MDIO( PHY_MDIO ),

-

-    // Misc. I/Os

-    .LED   ( LED    ),

-    .Button( Button )

-  );

-

-  //-------------------------------------------------------------------------

-  // MII/GMII Ethernet PHY model

-

-  reg [2:0]  Speed = 3'b000;

-

-  Phy_sim U_Phy_sim(

-    .Gtx_clk( PHY_GTX_CLK ),

-    .Rx_clk ( PHY_RXC  ),

-    .Tx_clk ( PHY_TXC  ),

-    .Tx_er  ( PHY_TXER ),

-    .Tx_en  ( PHY_TXEN ),

-    .Txd    ( PHY_TXD  ),

-    .Rx_er  ( PHY_RXER ),

-    .Rx_dv  ( PHY_RXDV ),

-    .Rxd    ( PHY_RXD  ),

-    .Crs    ( PHY_CRS  ),

-    .Col    ( PHY_COL  ),

-    .Speed  ( Speed    ),

-    .Done   ( Done     )

-  );

-

-  //-------------------------------------------------------------------------

-  // Generate all clocks & reset

-  //-------------------------------------------------------------------------

-

-  // Core master clock (100 MHz)

-  initial 

-    begin

-      #10;

-      while ( !Done )

-        begin

-          #5 Clk_100M = 0;

-          #5 Clk_100M = 1;

-        end

-    end

-

-  // GMII master clock (125 MHz)

-  initial 

-    begin

-      #10;

-      while ( !Done )

-        begin

-          #4 Clk_125M = 0;

-          #4 Clk_125M = 1;

-        end

-    end

-

-  initial

-    begin

-      Reset_n = 0;

-

-      #103;

-      Reset_n = 1;

-    end

-

-  //--- Emulate UART Transmitter --------------------------------------------

-

-  parameter    PRESCALER_16X = 3;

-  integer      Prescaler;

-  integer      TxLen = 0;

-  reg [2:0]    TxState;

-  integer      TxBit;

-  reg [1023:0] TxMsg;

-  reg          TXD;

-  reg          TxDone;

-

-  always @( negedge Reset_n or posedge Clk_100M )

-    if ( ~Reset_n )

-      begin

-        Prescaler <= 0;

-        TxState   = 0;

-        TXD       = 1;

-        TxBit     = 0;

-        TxDone    <= 0;

-      end

-    else

-      begin

-        TxDone <= 0;

-

-        if ( Prescaler == ((PRESCALER_16X + 1)*16 -1) )

-          Prescaler <= 0;

-        else

-          Prescaler <= Prescaler + 1;

-

-        if ( Prescaler==0 )

-          begin

-            casez ( TxState )

-              0: // IDLE

-                begin

-                  if ( TxLen != 0 )

-                    begin // Send start bit!

-                      TxBit = (TxLen-1)*8;

-                      TxLen = TxLen - 1;

-                      TXD = 0;

-                      TxState = 1;

-                    end

-                end

-

-              1: // Send next data bit

-                begin

-                  // Send next data bit

-                  TXD = TxMsg[ TxBit ];

-                  TxBit = TxBit + 1;

-                  if ( (TxBit % 8)==0 )

-                    // Next send two stop bits

-                    TxState = 2;

-                end

-

-              2: // First of two stop bits

-                begin

-                  TXD = 1;

-                  TxState = 3;

-                end

-

-              3: // Second of two stop bits

-                begin

-                  TXD = 1;

-                  TxState = 0;

-                  if ( TxLen == 0 )

-                    // Done with transmission!

-                    TxDone <= 1;

-                end

-            endcase

-          end

-      end

-

-  assign RS232_RXD = TXD;

-  assign USB_RXD = 1;

-

-  //--- Send commands to the DUT --------------------------------------------

-

-  initial

-    begin

-      #10;

-      while ( ~Reset_n ) #10;

-

-      // Wait a couple of clock edges before continuing to allow

-      // internal logic to get out of reset

-      repeat ( 5 )

-        @( posedge Clk_100M );

-

-      // Wait for the "READY" message to complete transmission

-      #60000;

-

-      // Select 100 Mbps

-      Speed = 3'b010;

-      TxMsg = "W 0022 0002 ";

-      TxLen = 12;

-      while ( ~TxDone )

-        @( posedge Clk_100M );

-

-      #50000;

-

-      TxMsg = "W 8000 8003 ";

-      TxLen = 12;

-      while ( ~TxDone )

-        @( posedge Clk_100M );

-

-      #50000;

-

-      TxMsg = "W 8001 0011 ";

-      TxLen = 12;

-      while ( ~TxDone )

-        @( posedge Clk_100M );

-

-      #50000;

-

-      TxMsg = "W 8002 1234 ";

-      TxLen = 12;

-      while ( ~TxDone )

-        @( posedge Clk_100M );

-

-      #50000;

-

-      TxMsg = "W 8003 5678 ";

-      TxLen = 12;

-      while ( ~TxDone )

-        @( posedge Clk_100M );

-

-      #50000;

-

-      TxMsg = "W 8004 9ABC ";

-      TxLen = 12;

-      while ( ~TxDone )

-        @( posedge Clk_100M );

-

-      #50000;

-

-      TxMsg = "W 8005 DEF0 ";

-      TxLen = 12;

-      while ( ~TxDone )

-        @( posedge Clk_100M );

-

-      #50000;

-

-      TxMsg = "W 8006 C5C0 ";

-      TxLen = 12;

-      while ( ~TxDone )

-        @( posedge Clk_100M );

-

-      #50000;

-

-      TxMsg = "W 8007 BABE ";

-      TxLen = 12;

-      while ( ~TxDone )

-        @( posedge Clk_100M );

-

-      #50000;

-

-      TxMsg = "R 8006 ";

-      TxLen = 7;

-      while ( ~TxDone )

-        @( posedge Clk_100M );

-

-      #50000;

-

-      // Enable PG!

-      TxMsg = "W 1000 0001 ";

-      TxLen = 12;

-      while ( ~TxDone )

-        @( posedge Clk_100M );

-

-      #50000;

-

-      // Read back that PG has been enabled!

-      TxMsg = "R 1000 ";

-      TxLen = 7;

-      while ( ~TxDone )

-        @( posedge Clk_100M );

-

-      #50000;

-

-      #50000;

-

-      Done = 1; #10;

-

-      $stop;

-    end

-

-  //--- Directly accesses a register on the internal Wishbone bus, bypassing the UART interface

-

-  task WrReg;

-    input [15:0] Reg;

-    input [15:0] Data;

-

-    begin

-    end

-  endtask

-

-endmodule