Add initial GOMC compatible uLab debug system hardware design files

9 files changed, 1994 insertions, 0 deletions

diff --git a/fpga/serial/common/remote_access.v b/fpga/serial/common/remote_access.v
new file mode 100644
index 0000000..5a37e86
--- /dev/null
+++ b/fpga/serial/common/remote_access.v
@@ -0,0 +1,1253 @@
+`timescale 1ns / 1ps
+//////////////////////////////////////////////////////////////////////////////////
+// Company: 			Raptor Engineering
+// Engineer: 			Timothy Pearson
+// 
+// Design Name:			Remote Access Driver
+// Module Name:    		remote_access 
+// Project Name: 		Remote Access Driver
+// Target Devices: 		Any
+// Description: 		Serial remote access driver and LCD display driver
+//
+// Dependencies: 
+//
+// (c) 2007-2013 Timothy Pearson, Raptor Engineering
+// Released into the Public Domain
+//
+//////////////////////////////////////////////////////////////////////////////////
+module remote_access(
+	input main_fifty_clock,				// 50MHz clock in
+	input [3:0] remote_access_4_bit_output,		// 4 bit output from the user program to remote access client
+	output [3:0] remote_access_4_bit_input,		// 4 bit input from the remote access client to user program
+	input [7:0] remote_access_8_bit_output,		// 8 bit output from the user program to remote access client
+	output [7:0] remote_access_8_bit_input,		// 8 bit input from the remote access client to user program
+	input [15:0] remote_access_16_bit_output,	// 16 bit output from the user program to the remote access client
+	output [15:0] remote_access_16_bit_input,	// 16 bit input from the remote access client to the user program
+	input serial_port_receiver,
+	output serial_port_transmitter,
+	input remote_access_input_enable,
+	input [7:0] local_input,
+	input seize_serial_tx,
+	input [7:0] serial_tx_data,
+	input serial_tx_strobe,
+	output [7:0] serial_rx_data,
+	output serial_rx_strobe,
+	input [5:0] lcd_data_in_address,
+	input [7:0] lcd_data_in_data,
+	input lcd_data_in_enable,
+	input sram_wren_in,
+	input sram_clock_in,
+	input [7:0] sram_data_in,
+	input [(RAM_ADDR_BITS-1):0] sram_address_in,
+	output [7:0] sram_data_out,
+	output sram_available,
+	input sram_processing_done,
+	input [7:0] led_segment_bus,
+	input [3:0] led_digit_select,
+
+	// For use on Digilent Spartan 3E or compatible board only
+	output [3:0] remote_access_lcd_data_out,
+	output remote_access_lcd_rs_out,
+	output remote_access_lcd_rw_out,
+	output remote_access_lcd_enable_out);
+
+	parameter RAM_ADDR_BITS = 14;
+	
+	reg [7:0] remote_access_4_bit_input_reg;
+	reg [7:0] remote_access_8_bit_input_reg;
+	reg [15:0] remote_access_16_bit_input_reg;
+	reg [3:0] remote_access_lcd_data_out_reg;
+	reg remote_access_lcd_rs_out_reg;
+	reg remote_access_lcd_rw_out_reg;
+	reg remote_access_lcd_enable_out_reg;
+	reg [7:0] serial_rx_data_reg;
+	reg serial_rx_strobe_reg;
+	reg sram_available_reg;
+	reg startup_needed = 1;
+	
+	assign remote_access_4_bit_input = remote_access_4_bit_input_reg[3:0];
+	assign remote_access_8_bit_input = remote_access_8_bit_input_reg;
+	assign remote_access_16_bit_input = remote_access_16_bit_input_reg;
+	assign remote_access_lcd_data_out = remote_access_lcd_data_out_reg;
+	assign remote_access_lcd_rs_out = remote_access_lcd_rs_out_reg;
+	assign remote_access_lcd_rw_out = remote_access_lcd_rw_out_reg;
+	assign remote_access_lcd_enable_out = remote_access_lcd_enable_out_reg;
+	assign serial_rx_data = serial_rx_data_reg;
+	assign serial_rx_strobe = serial_rx_strobe_reg;
+	assign sram_available = sram_available_reg;
+	
+	//-----------------------------------------------------------------------------------
+	//
+	// Create a 4.16MHz clock for the LCD display driver and a 25MHz clock 
+	// for the serial receiver.
+	//
+	//-----------------------------------------------------------------------------------
+	
+	reg four_mhz_clk;
+	reg clk_div_by_two;
+	reg clk_div_by_two_oneeighty;
+	reg clk_div_by_four;
+	reg clk_div_by_eight;
+	reg [3:0] fifty_clock_divider = 0;
+	
+	always @(posedge main_fifty_clock) begin
+		fifty_clock_divider = fifty_clock_divider + 1;
+		if (fifty_clock_divider > 12) begin
+			four_mhz_clk = !four_mhz_clk;
+			fifty_clock_divider = 0;
+		end
+	end
+	
+	always @(posedge main_fifty_clock) begin
+		clk_div_by_two = !clk_div_by_two;
+	end
+
+	always @(negedge main_fifty_clock) begin
+		clk_div_by_two_oneeighty = !clk_div_by_two_oneeighty;
+	end
+	
+	always @(posedge clk_div_by_two_oneeighty) begin
+		clk_div_by_four = !clk_div_by_four;
+	end
+	
+	always @(posedge clk_div_by_four) begin
+		clk_div_by_eight = !clk_div_by_eight;
+	end
+	
+	//-----------------------------------------------------------------------------------
+	//
+	// Keep track of what is on the LED display
+	//
+	//-----------------------------------------------------------------------------------
+	
+	reg [7:0] led_display_bytes [3:0];
+	reg [17:0] digit_blanker_1 = 0;
+	reg [17:0] digit_blanker_2 = 0;
+	reg [17:0] digit_blanker_3 = 0;
+	reg [17:0] digit_blanker_4 = 0;
+
+	reg [7:0] led_segment_bus_latch;
+	reg [3:0] led_digit_select_latch;
+	
+	always @(negedge clk_div_by_eight) begin
+		led_segment_bus_latch = led_segment_bus;
+		led_digit_select_latch = led_digit_select;
+
+		if (led_digit_select_latch[0] == 0) begin
+			led_display_bytes[0] = led_segment_bus_latch;
+			digit_blanker_1 = 0;
+			digit_blanker_2 = digit_blanker_2 + 1;
+			digit_blanker_3 = digit_blanker_3 + 1;
+			digit_blanker_4 = digit_blanker_4 + 1;
+		end
+		
+		if (led_digit_select_latch[1] == 0) begin
+			led_display_bytes[1] = led_segment_bus_latch;
+			digit_blanker_1 = digit_blanker_1 + 1;
+			digit_blanker_2 = 0;
+			digit_blanker_3 = digit_blanker_3 + 1;
+			digit_blanker_4 = digit_blanker_4 + 1;
+		end
+		
+		if (led_digit_select_latch[2] == 0) begin
+			led_display_bytes[2] = led_segment_bus_latch;
+			digit_blanker_1 = digit_blanker_1 + 1;
+			digit_blanker_2 = digit_blanker_2 + 1;
+			digit_blanker_3 = 0;
+			digit_blanker_4 = digit_blanker_4 + 1;
+		end
+		
+		if (led_digit_select_latch[3] == 0) begin
+			led_display_bytes[3] = led_segment_bus_latch;
+			digit_blanker_1 = digit_blanker_1 + 1;
+			digit_blanker_2 = digit_blanker_2 + 1;
+			digit_blanker_3 = digit_blanker_3 + 1;
+			digit_blanker_4 = 0;
+		end
+
+		if (digit_blanker_1 > 128000) begin
+			led_display_bytes[0] = 255;
+		end
+		
+		if (digit_blanker_2 > 128000) begin
+			led_display_bytes[1] = 255;
+		end
+		
+		if (digit_blanker_3 > 128000) begin
+			led_display_bytes[2] = 255;
+		end
+		
+		if (digit_blanker_4 > 128000) begin
+			led_display_bytes[3] = 255;
+		end
+	end
+	
+	//-----------------------------------------------------------------------------------
+	//
+	// Instantiate the data storage RAM for signal processing
+	//
+	//-----------------------------------------------------------------------------------
+
+	reg data_storage_remote_enable = 0;
+	wire data_storage_clka;
+	wire [7:0] data_storage_dina;
+	wire [(RAM_ADDR_BITS-1):0] data_storage_addra;
+	wire data_storage_write_enable;
+	wire [7:0] data_storage_data_out;
+	
+	reg [7:0] data_storage_dina_reg;
+	reg [(RAM_ADDR_BITS-1):0] data_storage_addra_reg;
+	reg data_storage_write_enable_reg;
+
+	data_storage #(RAM_ADDR_BITS) data_storage(.clka(data_storage_clka), .dina(data_storage_dina), .addra(data_storage_addra), 
+		.wea(data_storage_write_enable), .douta(data_storage_data_out));
+	
+	assign data_storage_clka = (data_storage_remote_enable) ? main_fifty_clock : sram_clock_in;
+	assign data_storage_dina = (data_storage_remote_enable) ? data_storage_dina_reg : sram_data_in;
+	assign data_storage_addra = (data_storage_remote_enable) ? data_storage_addra_reg : sram_address_in;
+	assign data_storage_write_enable = (data_storage_remote_enable) ? data_storage_write_enable_reg : sram_wren_in;
+	
+	assign sram_data_out = data_storage_data_out;
+	
+	// -----------------------------------------------------------------------------------------------
+	//
+	// Here is the serial receiver and transmitter
+	//
+	// -----------------------------------------------------------------------------------------------
+
+	reg [7:0] transmit_all_data_state = 0;
+
+	wire RxD_data_ready;
+	wire [7:0] RxD_data;
+	wire RxD_endofpacket;
+	wire RxD_idle;
+
+	reg TxD_start;
+	reg [7:0] TxD_data;
+	wire TxD_busy;
+	wire [4:0] state;
+	
+	reg [7:0] transmitter_4_bit_state = 0;
+	reg [7:0] transmitter_8_bit_state = 0;
+	reg [15:0] transmitter_16_bit_state = 0;
+	reg [7:0] transmitter_main_state = 0;
+	reg [7:0] transmitter_input_state = 0;
+
+	async_transmit asyncTX(.clk(clk_div_by_two), .TxD_start(TxD_start), .TxD_data(TxD_data), .TxD(serial_port_transmitter), .TxD_busy(TxD_busy), .state(state));
+	async_receiver asyncRX(.clk(clk_div_by_two), .RxD(serial_port_receiver), .RxD_data_ready(RxD_data_ready), .RxD_data(RxD_data), .RxD_endofpacket(RxD_endofpacket), .RxD_idle(RxD_idle));
+
+	reg tx_toggle = 0;
+	
+	reg transmit_4_bit_status = 0;
+	reg transmit_4_bit_status_done = 0;
+	
+	reg transmit_8_bit_status = 0;
+	reg transmit_8_bit_status_done = 0;
+	
+	reg transmit_16_bit_status = 0;
+	reg transmit_16_bit_pass_two = 0;
+	reg transmit_16_bit_status_done = 0;
+	
+	reg transmit_main_status = 0;
+	reg transmit_main_status_done = 0;
+
+	reg transmit_dsp_ram_size = 0;
+	reg transmit_dsp_ram_size_done = 0;
+	
+	reg transmit_input_status = 0;
+	reg transmit_input_status_done = 0;
+	
+	reg transmit_lcd_status = 0;
+	reg transmit_lcd_status_done = 0;
+	reg [7:0] transmit_lcd_status_counter = 0;
+	
+	reg enable_remote_access_input = 1;
+	reg remote_access_input_enable_prev = 0;
+	
+	reg [7:0] lcd_display_string [31:0];
+	
+	reg transmit_dsp_status = 0;
+	reg transmit_dsp_status_done = 0;
+	reg transmit_dsp_status_holdoff = 0;
+	reg [RAM_ADDR_BITS:0] transmit_dsp_status_counter = 0;
+	
+	reg transmit_led_status = 0;
+	reg transmit_led_status_done = 0;
+	reg [7:0] transmit_led_status_counter = 0;
+
+	reg transmit_dsp_rx_complete = 0;
+	reg transmit_dsp_rx_complete_done = 0;
+	
+	// Transmit!
+	always @(posedge clk_div_by_two) begin
+		transmitter_4_bit_state = remote_access_4_bit_output;
+		transmitter_8_bit_state = remote_access_8_bit_output;
+		transmitter_16_bit_state = remote_access_16_bit_output;
+		
+		transmitter_main_state = 0;
+		transmitter_main_state[0] = enable_remote_access_input;
+		
+		transmitter_input_state = local_input;
+	
+		if (seize_serial_tx == 1) begin
+			TxD_start = serial_tx_strobe;
+			TxD_data = serial_tx_data;
+		end else begin
+			if (tx_toggle == 0) begin
+				if ((transmit_4_bit_status == 1) && (transmit_4_bit_status_done == 0)) begin
+					TxD_data = transmitter_4_bit_state;
+
+					TxD_start = 1;
+					tx_toggle = 1;
+					
+					transmit_4_bit_status_done = 1;
+				end
+				
+				if ((transmit_8_bit_status == 1) && (transmit_8_bit_status_done == 0)) begin
+					TxD_data = transmitter_8_bit_state;
+
+					TxD_start = 1;
+					tx_toggle = 1;
+					
+					transmit_8_bit_status_done = 1;
+				end
+				
+				if ((transmit_16_bit_status == 1) && (transmit_16_bit_status_done == 0)) begin
+					if (transmit_16_bit_pass_two == 0) begin
+						TxD_data = transmitter_16_bit_state[15:8];
+						
+						TxD_start = 1;
+						tx_toggle = 1;	
+						
+						transmit_16_bit_pass_two = 1;
+					end else begin
+						TxD_data = transmitter_16_bit_state[7:0];
+						
+						TxD_start = 1;
+						tx_toggle = 1;	
+						
+						transmit_16_bit_status_done = 1;
+					end
+				end
+				
+				if ((transmit_main_status == 1) && (transmit_main_status_done == 0)) begin
+					TxD_data = transmitter_main_state;
+
+					TxD_start = 1;
+					tx_toggle = 1;
+					
+					transmit_main_status_done = 1;
+				end
+
+				if ((transmit_dsp_ram_size == 1) && (transmit_dsp_ram_size_done == 0)) begin
+					TxD_data = RAM_ADDR_BITS;
+
+					TxD_start = 1;
+					tx_toggle = 1;
+					
+					transmit_dsp_ram_size_done = 1;
+				end
+				
+				if ((transmit_input_status == 1) && (transmit_input_status_done == 0)) begin
+					TxD_data = transmitter_input_state;
+
+					TxD_start = 1;
+					tx_toggle = 1;
+					
+					transmit_input_status_done = 1;
+				end
+				
+				if ((transmit_lcd_status == 1) && (transmit_lcd_status_done == 0)) begin
+					TxD_data = lcd_display_string[transmit_lcd_status_counter];
+
+					TxD_start = 1;
+					tx_toggle = 1;
+					
+					transmit_lcd_status_counter = transmit_lcd_status_counter + 1;
+					if (transmit_lcd_status_counter > 31) begin
+						transmit_lcd_status_done = 1;
+					end
+				end
+				
+				if ((transmit_led_status == 1) && (transmit_led_status_done == 0)) begin
+					TxD_data = led_display_bytes[transmit_led_status_counter];
+
+					TxD_start = 1;
+					tx_toggle = 1;
+					
+					transmit_led_status_counter = transmit_led_status_counter + 1;
+					if (transmit_led_status_counter > 3) begin
+						transmit_led_status_done = 1;
+					end
+				end
+
+				if ((transmit_dsp_rx_complete == 1) && (transmit_dsp_rx_complete_done == 0)) begin
+					TxD_data = 77;
+
+					TxD_start = 1;
+					tx_toggle = 1;
+					
+					transmit_dsp_rx_complete_done = 1;
+				end
+				
+				if ((transmit_dsp_status == 1) && (transmit_dsp_rx_complete == 0) && (transmit_dsp_status_done == 0)) begin
+					if (transmit_dsp_status_holdoff == 0) begin
+						transmit_dsp_status_holdoff = 1;
+						data_storage_write_enable_reg = 0;
+						data_storage_addra_reg = 0;			// Initial data value
+					end else begin
+						data_storage_write_enable_reg = 0;
+						TxD_data = data_storage_data_out;
+
+						TxD_start = 1;
+						tx_toggle = 1;
+						
+						transmit_dsp_status_counter = transmit_dsp_status_counter + 1;
+						data_storage_addra_reg = transmit_dsp_status_counter[(RAM_ADDR_BITS-1):0];
+						if (transmit_dsp_status_counter >= (2**RAM_ADDR_BITS)) begin
+							transmit_dsp_status_done = 1;
+							data_storage_write_enable_reg = 1'bz;
+							data_storage_addra_reg = {(RAM_ADDR_BITS){1'bz}};
+						end
+					end
+				end
+			end else begin
+				if (state == 5'b10000) begin	// Wait for transmission of byte to complete
+					TxD_start = 0;
+					tx_toggle = 0;
+				end
+			end
+		end
+		
+		if (transmit_4_bit_status == 0) begin
+			transmit_4_bit_status_done = 0;
+		end
+		
+		if (transmit_8_bit_status == 0) begin
+			transmit_8_bit_status_done = 0;
+		end
+		
+		if (transmit_16_bit_status == 0) begin
+			transmit_16_bit_pass_two = 0;
+			transmit_16_bit_status_done = 0;
+		end
+		
+		if (transmit_main_status == 0) begin
+			transmit_main_status_done = 0;
+		end
+
+		if (transmit_dsp_ram_size == 0) begin
+			transmit_dsp_ram_size_done = 0;
+		end
+		
+		if (transmit_input_status == 0) begin
+			transmit_input_status_done = 0;
+		end
+		
+		if (transmit_lcd_status == 0) begin
+			transmit_lcd_status_done = 0;
+			transmit_lcd_status_counter = 0;
+		end
+		
+		if (transmit_led_status == 0) begin
+			transmit_led_status_done = 0;
+			transmit_led_status_counter = 0;
+		end
+
+		if (transmit_dsp_rx_complete == 0) begin
+			transmit_dsp_rx_complete_done = 0;
+		end
+		
+		if (transmit_dsp_status == 0) begin
+			transmit_dsp_status_done = 0;
+			transmit_dsp_status_holdoff = 0;
+			transmit_dsp_status_counter = 0;
+		end
+	end
+
+	reg [7:0] lcd_display_initialization_state = 0;
+	reg serial_character_received = 0;
+	reg [7:0] serial_receiver_toggler = 0;
+	reg [7:0] serial_command_buffer = 0;
+	reg [2:0] next_byte_is_command = 0;
+	reg [7:0] next_byte_is_command_prev_command = 0;
+	reg [7:0] serial_command_timer = 0;
+	reg update_lcd_display = 0;
+	reg [7:0] serial_update_counter = 0;
+	reg [RAM_ADDR_BITS:0] dsp_update_counter = 0;
+	reg [7:0] received_lcd_display_string [31:0];
+	reg data_write_timer = 0;
+	reg waiting_on_dsp_processing = 0;
+	
+	// Receive serial commands
+	always @(posedge clk_div_by_two) begin
+		if (startup_needed == 1) begin
+			startup_needed = 0;
+			transmit_dsp_status = 1;
+		end
+	
+		if (lcd_data_in_enable == 1) begin
+			received_lcd_display_string[lcd_data_in_address] = lcd_data_in_data;
+			update_lcd_display = 1;
+			serial_command_timer = 255;
+		end
+	
+		if ((remote_access_input_enable == 1) && (remote_access_input_enable_prev == 0)) begin
+			enable_remote_access_input = !enable_remote_access_input;
+		end
+		remote_access_input_enable_prev = remote_access_input_enable;
+	
+		if (enable_remote_access_input == 0) begin
+			// Enable local input
+			remote_access_8_bit_input_reg = local_input;
+		end
+	
+		if (serial_command_timer > 0) begin
+			serial_command_timer = serial_command_timer - 1;
+		end else begin
+			update_lcd_display = 0;
+		end
+		
+		if (transmit_4_bit_status_done == 1) begin
+			transmit_4_bit_status = 0;
+			if (transmit_all_data_state == 1) begin
+				transmit_8_bit_status = 1;
+			end
+		end
+		
+		if (transmit_8_bit_status_done == 1) begin
+			transmit_8_bit_status = 0;
+			if (transmit_all_data_state == 1) begin
+				transmit_16_bit_status = 1;
+			end
+		end
+		
+		if (transmit_16_bit_status_done == 1) begin
+			transmit_16_bit_status = 0;
+			if (transmit_all_data_state == 1) begin
+				transmit_led_status = 1;
+			end
+		end
+		
+		if (transmit_led_status_done == 1) begin
+			transmit_led_status = 0;
+			if (transmit_all_data_state == 1) begin
+				transmit_all_data_state = 0;
+			end
+		end
+
+		if (transmit_dsp_rx_complete_done == 1) begin
+			transmit_dsp_rx_complete = 0;
+		end
+		
+		if (transmit_main_status_done == 1) begin
+			transmit_main_status = 0;
+			if (transmit_all_data_state == 1) begin
+				transmit_dsp_ram_size = 1;
+			end
+		end
+
+		if (transmit_dsp_ram_size_done == 1) begin
+			transmit_dsp_ram_size = 0;
+			if (transmit_all_data_state == 1) begin
+				transmit_4_bit_status = 1;
+			end
+		end
+		
+		if (transmit_input_status_done == 1) begin
+			transmit_input_status = 0;
+		end
+		
+		if (transmit_lcd_status_done == 1) begin
+			transmit_lcd_status = 0;
+			if (transmit_all_data_state == 1) begin
+				transmit_main_status = 1;
+			end
+		end
+		
+		if (transmit_dsp_status_done == 1) begin
+			transmit_dsp_status = 0;
+			data_storage_remote_enable = 0;
+		end
+		
+		if (transmit_dsp_status == 1) begin
+			data_storage_remote_enable = 1;
+		end
+		
+		if (data_write_timer > 1) begin
+			data_write_timer = data_write_timer - 1;
+		end else begin
+			if (data_write_timer == 1) begin
+				data_storage_write_enable_reg = 0;
+				data_write_timer = 0;
+			end
+		end
+		
+		if ((waiting_on_dsp_processing == 1) && (sram_processing_done == 1)) begin
+			waiting_on_dsp_processing = 0;
+			transmit_dsp_status = 1;
+		end
+	
+		serial_rx_strobe_reg = 0;		// Make sure that this get reset!
+		
+		if ((sram_processing_done == 1) && (sram_available_reg == 1)) begin
+			sram_available_reg = 0;
+			transmit_dsp_status = 1;
+		end
+	
+		if (RxD_data_ready == 1) begin
+			if (serial_character_received == 0) begin
+				serial_rx_data_reg = RxD_data;
+				serial_rx_strobe_reg = 1;		// Signal new data...
+				if (seize_serial_tx == 0) begin
+					if (next_byte_is_command_prev_command == 77) begin
+						// DSP input data
+						if (dsp_update_counter < (2**RAM_ADDR_BITS)) begin
+							data_storage_remote_enable = 1;
+							data_storage_addra_reg = dsp_update_counter[(RAM_ADDR_BITS-1):0];
+							data_storage_dina_reg = serial_rx_data_reg;
+							data_storage_write_enable_reg = 1;
+							data_write_timer = 3;
+							dsp_update_counter = dsp_update_counter + 1;
+							
+							// TESTING ONLY!!!
+							//if (dsp_update_counter < 17) begin
+							//	received_lcd_display_string[dsp_update_counter - 1] = serial_command_buffer;
+							//end
+
+							if (dsp_update_counter >= (2**RAM_ADDR_BITS)) begin
+								next_byte_is_command = 0;
+								data_storage_write_enable_reg = 0;
+								data_storage_remote_enable = 0;
+								sram_available_reg = 1;
+								data_storage_write_enable_reg = 1'bz;
+								data_storage_addra_reg = {(RAM_ADDR_BITS){1'bz}};
+								waiting_on_dsp_processing = 1;
+								transmit_dsp_rx_complete = 1;
+								next_byte_is_command_prev_command = 0;
+								
+								// TESTING ONLY!!!
+								//transmit_dsp_status = 1;
+							end
+						end
+					end else begin
+						// Parse the command and see what it is
+						serial_character_received = 1;
+						if (serial_rx_data_reg == 13) begin
+							// Carriage Return!  The serial_command_buffer holds the command!  Parse it!
+							if (next_byte_is_command == 0) begin
+								if (serial_command_buffer == 65) begin
+									// Display update requested
+									next_byte_is_command = 1;
+									serial_update_counter = 0;
+									next_byte_is_command_prev_command = 65;
+								end
+								
+								if (serial_command_buffer == 66) begin
+									// 8 bit input update
+									if (enable_remote_access_input == 1) begin
+										next_byte_is_command = 1;
+										serial_update_counter = 0;
+										next_byte_is_command_prev_command = 66;
+									end
+								end
+								
+								if (serial_command_buffer == 67) begin
+									// 16 bit input update
+									next_byte_is_command = 1;
+									serial_update_counter = 0;
+									next_byte_is_command_prev_command = 67;
+								end
+								
+								if (serial_command_buffer == 68) begin
+									// 8 bit output status
+									transmit_8_bit_status = 1;
+								end
+								
+								if (serial_command_buffer == 69) begin
+									// 16 bit output status
+									transmit_16_bit_status = 1;
+								end
+								
+								if (serial_command_buffer == 70) begin
+									// System status
+									transmit_main_status = 1;
+								end
+								
+								if (serial_command_buffer == 71) begin
+									// Simulate center button press
+									enable_remote_access_input = !enable_remote_access_input;
+								end
+								
+								if (serial_command_buffer == 72) begin
+									// Local input status
+									transmit_input_status = 1;
+								end
+								
+								if (serial_command_buffer == 73) begin
+									// 4 bit input update
+									if (enable_remote_access_input == 1) begin
+										next_byte_is_command = 1;
+										serial_update_counter = 0;
+										next_byte_is_command_prev_command = 73;
+									end
+								end
+								
+								if (serial_command_buffer == 74) begin
+									// 4 bit output status
+									transmit_4_bit_status = 1;
+								end
+								
+								if (serial_command_buffer == 75) begin
+									// Transmit the contents of the LCD...
+									transmit_lcd_status = 1;
+								end
+								
+								if (serial_command_buffer == 76) begin
+									// Transmit the contents of the LCD...
+									transmit_all_data_state = 1;
+									transmit_lcd_status = 1;
+								end
+								
+								if (serial_command_buffer == 77) begin
+									// Receive offline DSP data
+									next_byte_is_command = 1;
+									dsp_update_counter = 0;
+									next_byte_is_command_prev_command = 77;
+								end
+								
+								if (serial_command_buffer == 78) begin
+									// Transmit the contents of RAM...
+									transmit_dsp_status = 1;
+								end
+
+								if (serial_command_buffer == 79) begin
+									// Transmit the DSP RAM size
+									transmit_dsp_ram_size = 1;
+								end
+							end else begin
+								if (next_byte_is_command == 1) begin
+									// The previous byte was the command--now load in the data!
+									if (next_byte_is_command_prev_command == 65) begin
+										if (serial_update_counter < 32) begin
+											received_lcd_display_string[serial_update_counter] = serial_command_buffer;
+											serial_update_counter = serial_update_counter + 1;
+										end else begin
+											update_lcd_display = 1;
+											serial_command_timer = 255;
+											next_byte_is_command = 0;
+										end
+									end
+									
+									// 4 bit input update
+									if (next_byte_is_command_prev_command == 73) begin
+										remote_access_4_bit_input_reg = serial_command_buffer;
+										next_byte_is_command = 0;
+									end
+									
+									// 8 bit input update
+									if (next_byte_is_command_prev_command == 66) begin
+										remote_access_8_bit_input_reg = serial_command_buffer;
+										next_byte_is_command = 0;
+									end
+									
+									// 16 bit input update
+									if (next_byte_is_command_prev_command == 67) begin
+										if (serial_update_counter == 0) begin
+											remote_access_16_bit_input_reg[15:8] = serial_command_buffer;
+											serial_update_counter = 1;
+										end else begin
+											remote_access_16_bit_input_reg[7:0] = serial_command_buffer;
+											next_byte_is_command = 0;
+										end
+									end
+								end
+							end
+						end
+					end
+				end
+				
+				//if (RxD_data != 10) begin		// Ignore linefeeds
+					serial_command_buffer = RxD_data;
+				//end
+			
+				serial_receiver_toggler = serial_receiver_toggler + 1;
+			end
+		end
+		
+		if (RxD_data_ready == 0) begin
+			serial_character_received = 0;
+		end
+	end
+	
+	//-----------------------------------------------------------------------------------
+	//
+	// This routine will display the contents of lcd_display_string on the LCD display
+	//
+	//-----------------------------------------------------------------------------------
+	
+	reg [15:0] lcd_display_wait_counter = 0;
+	reg [7:0] lcd_display_current_character = 0;
+	reg lcd_display_line_two = 0;		// Are we trying to write to line two?
+	
+	always @(posedge four_mhz_clk) begin	
+		case (lcd_display_initialization_state)
+			// Initialize the display according to the reference manual
+			0:begin
+				// Set up the default display...
+				lcd_display_string[0] = 73;		// I
+				lcd_display_string[1] = 110;		// n
+				lcd_display_string[2] = 105;		// i
+				lcd_display_string[3] = 116;		// t
+				lcd_display_string[4] = 105;		// i
+				lcd_display_string[5] = 97;		// a
+				lcd_display_string[6] = 108;		// l
+				lcd_display_string[7] = 105;		// i
+				lcd_display_string[8] = 122;		// z
+				lcd_display_string[9] = 97;		// a
+				lcd_display_string[10] = 116;	// t
+				lcd_display_string[11] = 105;	// i
+				lcd_display_string[12] = 111;	// o
+				lcd_display_string[13] = 110;	// n
+				lcd_display_string[14] = 32;		// <blank>
+				lcd_display_string[15] = 32;		// <blank>
+				lcd_display_string[16] = 79;		// O
+				lcd_display_string[17] = 75;		// k
+				lcd_display_string[18] = 32;		// <blank>
+				lcd_display_string[19] = 32;		// <blank>
+				lcd_display_string[20] = 32;		// <blank>
+				lcd_display_string[21] = 32;		// <blank>
+				lcd_display_string[22] = 32;		// <blank>
+				lcd_display_string[23] = 32;		// <blank>
+				lcd_display_string[24] = 32;		// <blank>
+				lcd_display_string[25] = 32;		// <blank>
+				lcd_display_string[26] = 32;		// <blank>
+				lcd_display_string[27] = 32;		// <blank>
+				lcd_display_string[28] = 32;		// <blank>
+				lcd_display_string[29] = 32;		// <blank>
+				lcd_display_string[30] = 32;		// <blank>
+				lcd_display_string[31] = 32;		// <blank>
+			
+				lcd_display_current_character = 0;
+				
+				lcd_display_line_two = 0;
+				remote_access_lcd_data_out_reg = 3;
+				remote_access_lcd_enable_out_reg = 1;
+				remote_access_lcd_rs_out_reg = 0;
+				remote_access_lcd_rw_out_reg = 0;
+				lcd_display_wait_counter = 17083;	// Wait 15mS
+				lcd_display_initialization_state = lcd_display_initialization_state + 1;
+			end
+			1:begin
+				remote_access_lcd_enable_out_reg = 0;
+				lcd_display_wait_counter = lcd_display_wait_counter - 1;
+				if (lcd_display_wait_counter == 0) lcd_display_initialization_state = lcd_display_initialization_state + 1;
+			end
+			2:begin
+				remote_access_lcd_data_out_reg = 3;
+				remote_access_lcd_enable_out_reg = 1;
+				lcd_display_wait_counter = 417;		// Wait 100uS
+				lcd_display_initialization_state = lcd_display_initialization_state + 1;
+			end
+			3:begin
+				remote_access_lcd_enable_out_reg = 0;
+				lcd_display_wait_counter = lcd_display_wait_counter - 1;
+				if (lcd_display_wait_counter == 0) lcd_display_initialization_state = lcd_display_initialization_state + 1;
+			end
+			4:begin
+				remote_access_lcd_data_out_reg = 3;
+				remote_access_lcd_enable_out_reg = 1;
+				lcd_display_wait_counter = 167;		// Wait 40uS
+				lcd_display_initialization_state = lcd_display_initialization_state + 1;
+			end
+			5:begin
+				remote_access_lcd_enable_out_reg = 0;
+				lcd_display_wait_counter = lcd_display_wait_counter - 1;
+				if (lcd_display_wait_counter == 0) lcd_display_initialization_state = lcd_display_initialization_state + 1;
+			end
+			6:begin
+				remote_access_lcd_data_out_reg = 2;
+				remote_access_lcd_enable_out_reg = 1;
+				lcd_display_wait_counter = 167;		// Wait 40uS
+				lcd_display_initialization_state = lcd_display_initialization_state + 1;
+			end
+			7:begin
+				remote_access_lcd_enable_out_reg = 0;
+				lcd_display_wait_counter = lcd_display_wait_counter - 1;
+				if (lcd_display_wait_counter == 0) lcd_display_initialization_state = lcd_display_initialization_state + 1;
+			end
+			// Display is now initialized
+			
+			// Send Function Set command
+			8:begin
+				remote_access_lcd_data_out_reg = 2;
+				remote_access_lcd_enable_out_reg = 1;
+				lcd_display_wait_counter = 5;		// Wait 1uS
+				lcd_display_initialization_state = lcd_display_initialization_state + 1;
+			end
+			9:begin
+				remote_access_lcd_enable_out_reg = 0;
+				lcd_display_wait_counter = lcd_display_wait_counter - 1;
+				if (lcd_display_wait_counter == 0) lcd_display_initialization_state = lcd_display_initialization_state + 1;
+			end
+			10:begin
+				remote_access_lcd_data_out_reg = 8;
+				remote_access_lcd_enable_out_reg = 1;
+				lcd_display_wait_counter = 167;		// Wait 40uS
+				lcd_display_initialization_state = lcd_display_initialization_state + 1;
+			end
+			11:begin
+				remote_access_lcd_enable_out_reg = 0;
+				lcd_display_wait_counter = lcd_display_wait_counter - 1;
+				if (lcd_display_wait_counter == 0) lcd_display_initialization_state = lcd_display_initialization_state + 1;
+			end
+			
+			// Send Entry Mode Set command
+			12:begin
+				remote_access_lcd_data_out_reg = 0;
+				remote_access_lcd_enable_out_reg = 1;
+				lcd_display_wait_counter = 5;		// Wait 1uS
+				lcd_display_initialization_state = lcd_display_initialization_state + 1;
+			end
+			13:begin
+				remote_access_lcd_enable_out_reg = 0;
+				lcd_display_wait_counter = lcd_display_wait_counter - 1;
+				if (lcd_display_wait_counter == 0) lcd_display_initialization_state = lcd_display_initialization_state + 1;
+			end
+			14:begin
+				remote_access_lcd_data_out_reg = 6;
+				remote_access_lcd_enable_out_reg = 1;
+				lcd_display_wait_counter = 167;		// Wait 40uS
+				lcd_display_initialization_state = lcd_display_initialization_state + 1;
+			end
+			15:begin
+				remote_access_lcd_enable_out_reg = 0;
+				lcd_display_wait_counter = lcd_display_wait_counter - 1;
+				if (lcd_display_wait_counter == 0) lcd_display_initialization_state = lcd_display_initialization_state + 1;
+			end
+			
+			// Send Display On command and disable cursors and blinking
+			16:begin
+				remote_access_lcd_data_out_reg = 0;
+				remote_access_lcd_enable_out_reg = 1;
+				lcd_display_wait_counter = 5;		// Wait 1uS
+				lcd_display_initialization_state = lcd_display_initialization_state + 1;
+			end
+			17:begin
+				remote_access_lcd_enable_out_reg = 0;
+				lcd_display_wait_counter = lcd_display_wait_counter - 1;
+				if (lcd_display_wait_counter == 0) lcd_display_initialization_state = lcd_display_initialization_state + 1;
+			end
+			18:begin
+				remote_access_lcd_data_out_reg = 12;
+				remote_access_lcd_enable_out_reg = 1;
+				lcd_display_wait_counter = 167;		// Wait 40uS
+				lcd_display_initialization_state = lcd_display_initialization_state + 1;
+			end
+			19:begin
+				remote_access_lcd_enable_out_reg = 0;
+				lcd_display_wait_counter = lcd_display_wait_counter - 1;
+				if (lcd_display_wait_counter == 0) lcd_display_initialization_state = lcd_display_initialization_state + 1;
+			end
+			
+			// Send Clear Display command
+			20:begin
+				remote_access_lcd_data_out_reg = 0;
+				remote_access_lcd_enable_out_reg = 1;
+				lcd_display_wait_counter = 5;		// Wait 1uS
+				lcd_display_initialization_state = lcd_display_initialization_state + 1;
+			end
+			21:begin
+				remote_access_lcd_enable_out_reg = 0;
+				lcd_display_wait_counter = lcd_display_wait_counter - 1;
+				if (lcd_display_wait_counter == 0) lcd_display_initialization_state = lcd_display_initialization_state + 1;
+			end
+			22:begin
+				remote_access_lcd_data_out_reg = 1;
+				remote_access_lcd_enable_out_reg = 1;
+				lcd_display_wait_counter = 6833;		// Wait 1.64uS
+				lcd_display_initialization_state = lcd_display_initialization_state + 1;
+			end
+			23:begin
+				remote_access_lcd_enable_out_reg = 0;
+				lcd_display_wait_counter = lcd_display_wait_counter - 1;
+				if (lcd_display_wait_counter == 0) lcd_display_initialization_state = lcd_display_initialization_state + 1;
+			end
+			
+			// Set DD RAM Address to 0 if lcd_display_line_two is 0, or 0x40 if it is 1
+			24:begin
+				remote_access_lcd_rs_out_reg = 0;
+				if (lcd_display_line_two == 0) begin
+					remote_access_lcd_data_out_reg = 8;
+				end
+				if (lcd_display_line_two == 1) begin
+					remote_access_lcd_data_out_reg = 12;
+				end
+				remote_access_lcd_enable_out_reg = 1;
+				lcd_display_wait_counter = 5;		// Wait 1uS
+				lcd_display_initialization_state = lcd_display_initialization_state + 1;
+			end
+			25:begin
+				remote_access_lcd_enable_out_reg = 0;
+				lcd_display_wait_counter = lcd_display_wait_counter - 1;
+				if (lcd_display_wait_counter == 0) lcd_display_initialization_state = lcd_display_initialization_state + 1;
+			end
+			26:begin
+				remote_access_lcd_data_out_reg = 0;
+				remote_access_lcd_enable_out_reg = 1;
+				lcd_display_wait_counter = 167;		// Wait 40uS
+				lcd_display_initialization_state = lcd_display_initialization_state + 1;
+			end
+			27:begin
+				remote_access_lcd_enable_out_reg = 0;
+				lcd_display_wait_counter = lcd_display_wait_counter - 1;
+				if (lcd_display_wait_counter == 0) lcd_display_initialization_state = lcd_display_initialization_state + 1;
+			end
+			
+			// Display the characters
+			28:begin
+				remote_access_lcd_data_out_reg = lcd_display_string[lcd_display_current_character][7:4];
+				remote_access_lcd_rs_out_reg = 1;
+				remote_access_lcd_enable_out_reg = 1;
+				lcd_display_wait_counter = 5;		// Wait 1uS
+				lcd_display_initialization_state = lcd_display_initialization_state + 1;
+			end
+			29:begin
+				remote_access_lcd_enable_out_reg = 0;
+				lcd_display_wait_counter = lcd_display_wait_counter - 1;
+				if (lcd_display_wait_counter == 0) lcd_display_initialization_state = lcd_display_initialization_state + 1;
+			end
+			30:begin
+				remote_access_lcd_data_out_reg = lcd_display_string[lcd_display_current_character][3:0];
+				remote_access_lcd_enable_out_reg = 1;
+				lcd_display_wait_counter = 167;		// Wait 40uS
+				lcd_display_initialization_state = lcd_display_initialization_state + 1;
+			end
+			31:begin
+				remote_access_lcd_enable_out_reg = 0;
+				lcd_display_wait_counter = lcd_display_wait_counter - 1;
+				if (lcd_display_wait_counter == 0) lcd_display_initialization_state = lcd_display_initialization_state + 1;
+			end
+			32:begin
+				lcd_display_current_character = lcd_display_current_character + 1;
+				lcd_display_initialization_state = lcd_display_initialization_state + 1;
+				if (lcd_display_current_character < 32) begin
+					lcd_display_initialization_state = 28;
+				end
+				if (lcd_display_current_character == 16) begin
+					if (lcd_display_line_two == 0) begin
+						lcd_display_line_two = 1;
+						lcd_display_initialization_state = 24;
+					end
+				end
+			end
+			33:begin
+				// End!
+				remote_access_lcd_rs_out_reg = 0;
+				remote_access_lcd_enable_out_reg = 0;
+				lcd_display_line_two = 0;
+				lcd_display_current_character = 0;
+				if (update_lcd_display == 1) begin
+					lcd_display_line_two = 0;
+					lcd_display_current_character = 0;
+					lcd_display_initialization_state = 24;
+					lcd_display_string[0] = received_lcd_display_string[0];
+					lcd_display_string[1] = received_lcd_display_string[1];
+					lcd_display_string[2] = received_lcd_display_string[2];
+					lcd_display_string[3] = received_lcd_display_string[3];
+					lcd_display_string[4] = received_lcd_display_string[4];
+					lcd_display_string[5] = received_lcd_display_string[5];
+					lcd_display_string[6] = received_lcd_display_string[6];
+					lcd_display_string[7] = received_lcd_display_string[7];
+					lcd_display_string[8] = received_lcd_display_string[8];
+					lcd_display_string[9] = received_lcd_display_string[9];
+					lcd_display_string[10] = received_lcd_display_string[10];
+					lcd_display_string[11] = received_lcd_display_string[11];
+					lcd_display_string[12] = received_lcd_display_string[12];
+					lcd_display_string[13] = received_lcd_display_string[13];
+					lcd_display_string[14] = received_lcd_display_string[14];
+					lcd_display_string[15] = received_lcd_display_string[15];
+					lcd_display_string[16] = received_lcd_display_string[16];
+					lcd_display_string[17] = received_lcd_display_string[17];
+					lcd_display_string[18] = received_lcd_display_string[18];
+					lcd_display_string[19] = received_lcd_display_string[19];
+					lcd_display_string[20] = received_lcd_display_string[20];
+					lcd_display_string[21] = received_lcd_display_string[21];
+					lcd_display_string[22] = received_lcd_display_string[22];
+					lcd_display_string[23] = received_lcd_display_string[23];
+					lcd_display_string[24] = received_lcd_display_string[24];
+					lcd_display_string[25] = received_lcd_display_string[25];
+					lcd_display_string[26] = received_lcd_display_string[26];
+					lcd_display_string[27] = received_lcd_display_string[27];
+					lcd_display_string[28] = received_lcd_display_string[28];
+					lcd_display_string[29] = received_lcd_display_string[29];
+					lcd_display_string[30] = received_lcd_display_string[30];
+					lcd_display_string[31] = received_lcd_display_string[31];
+				end
+			end
+		endcase
+	end
+endmodule
+
+module async_receiver(clk, RxD, RxD_data_ready, RxD_data, RxD_endofpacket, RxD_idle);
+	input clk, RxD;
+	output RxD_data_ready;  // onc clock pulse when RxD_data is valid
+	output [7:0] RxD_data;
+	
+	parameter ClkFrequency = 25000000;	// 25MHz
+	parameter Baud = 115200;
+	
+	// We also detect if a gap occurs in the received stream of characters
+	// That can be useful if multiple characters are sent in burst
+	//  so that multiple characters can be treated as a "packet"
+	output RxD_endofpacket;  // one clock pulse, when no more data is received (RxD_idle is going high)
+	output RxD_idle;  // no data is being received
+	
+	// Baud generator (we use 8 times oversampling)
+	parameter Baud8 = Baud*8;
+	parameter Baud8GeneratorAccWidth = 16;
+	wire [Baud8GeneratorAccWidth:0] Baud8GeneratorInc = ((Baud8<<(Baud8GeneratorAccWidth-7))+(ClkFrequency>>8))/(ClkFrequency>>7);
+	reg [Baud8GeneratorAccWidth:0] Baud8GeneratorAcc;
+	always @(posedge clk) Baud8GeneratorAcc <= Baud8GeneratorAcc[Baud8GeneratorAccWidth-1:0] + Baud8GeneratorInc;
+	wire Baud8Tick = Baud8GeneratorAcc[Baud8GeneratorAccWidth];
+	
+	////////////////////////////
+	reg [1:0] RxD_sync_inv;
+	always @(posedge clk) if(Baud8Tick) RxD_sync_inv <= {RxD_sync_inv[0], ~RxD};
+	// we invert RxD, so that the idle becomes "0", to prevent a phantom character to be received at startup
+	
+	reg [1:0] RxD_cnt_inv;
+	reg RxD_bit_inv;
+	
+	always @(posedge clk)
+	if(Baud8Tick)
+	begin
+		if( RxD_sync_inv[1] && RxD_cnt_inv!=2'b11) RxD_cnt_inv <= RxD_cnt_inv + 2'h1;
+		else 
+		if(~RxD_sync_inv[1] && RxD_cnt_inv!=2'b00) RxD_cnt_inv <= RxD_cnt_inv - 2'h1;
+	
+		if(RxD_cnt_inv==2'b00) RxD_bit_inv <= 1'b0;
+		else
+		if(RxD_cnt_inv==2'b11) RxD_bit_inv <= 1'b1;
+	end
+	
+	reg [3:0] state;
+	reg [3:0] bit_spacing;
+	
+	// "next_bit" controls when the data sampling occurs
+	// depending on how noisy the RxD is, different values might work better
+	// with a clean connection, values from 8 to 11 work
+	wire next_bit = (bit_spacing==4'd10);
+	
+	always @(posedge clk)
+	if(state==0)
+		bit_spacing <= 4'b0000;
+	else
+	if(Baud8Tick)
+		bit_spacing <= {bit_spacing[2:0] + 4'b0001} | {bit_spacing[3], 3'b000};
+	
+	always @(posedge clk)
+	if(Baud8Tick)
+	case(state)
+		4'b0000: if(RxD_bit_inv) state <= 4'b1000;  // start bit found?
+		4'b1000: if(next_bit) state <= 4'b1001;  // bit 0
+		4'b1001: if(next_bit) state <= 4'b1010;  // bit 1
+		4'b1010: if(next_bit) state <= 4'b1011;  // bit 2
+		4'b1011: if(next_bit) state <= 4'b1100;  // bit 3
+		4'b1100: if(next_bit) state <= 4'b1101;  // bit 4
+		4'b1101: if(next_bit) state <= 4'b1110;  // bit 5
+		4'b1110: if(next_bit) state <= 4'b1111;  // bit 6
+		4'b1111: if(next_bit) state <= 4'b0001;  // bit 7
+		4'b0001: if(next_bit) state <= 4'b0000;  // stop bit
+		default: state <= 4'b0000;
+	endcase
+	
+	reg [7:0] RxD_data;
+	always @(posedge clk)
+	if(Baud8Tick && next_bit && state[3]) RxD_data <= {~RxD_bit_inv, RxD_data[7:1]};
+	
+	reg RxD_data_ready;
+	always @(posedge clk)
+	begin
+		RxD_data_ready <= (Baud8Tick && next_bit && state==4'b0001 && ~RxD_bit_inv);  // ready only if the stop bit is received
+	end
+	
+	reg [4:0] gap_count;
+	always @(posedge clk) if (state!=0) gap_count<=5'h00; else if(Baud8Tick & ~gap_count[4]) gap_count <= gap_count + 5'h01;
+	assign RxD_idle = gap_count[4];
+	reg RxD_endofpacket; always @(posedge clk) RxD_endofpacket <= Baud8Tick & (gap_count==5'h0F);
+endmodule
+
+module async_transmit(clk, TxD_start, TxD_data, TxD, TxD_busy, state);
+	input clk, TxD_start;
+	input [7:0] TxD_data;
+	output TxD, TxD_busy;
+	output [4:0] state;
+	parameter ClkFrequency = 25000000;	// 25MHz
+	//parameter ClkFrequency = 50000000;	// 50MHz
+	parameter Baud = 115200;
+	parameter RegisterInputData = 1;	// in RegisterInputData mode, the input doesn't have to stay valid while the character is been transmitted
+	
+	// Baud generator
+	parameter BaudGeneratorAccWidth = 16;
+	reg [BaudGeneratorAccWidth:0] BaudGeneratorAcc;
+	`ifdef DEBUG
+	wire [BaudGeneratorAccWidth:0] BaudGeneratorInc = 17'h10000;
+	`else
+	wire [BaudGeneratorAccWidth:0] BaudGeneratorInc = ((Baud<<(BaudGeneratorAccWidth-4))+(ClkFrequency>>5))/(ClkFrequency>>4);
+	`endif
+	
+	wire BaudTick = BaudGeneratorAcc[BaudGeneratorAccWidth];
+	wire TxD_busy;
+	always @(posedge clk) if(TxD_busy) BaudGeneratorAcc <= BaudGeneratorAcc[BaudGeneratorAccWidth-1:0] + BaudGeneratorInc;
+	
+	// Transmitter state machine
+	reg [4:0] state;
+	wire TxD_ready = (state==0);
+	assign TxD_busy = ~TxD_ready;
+	
+	reg [7:0] TxD_dataReg;
+	always @(posedge clk) if(TxD_ready & TxD_start) TxD_dataReg <= TxD_data;
+	wire [7:0] TxD_dataD = RegisterInputData ? TxD_dataReg : TxD_data;
+	
+	always @(posedge clk) begin
+		if (TxD_start == 0) state <= 5'b00000;
+	
+		case(state)
+			5'b00000: if(TxD_start) state <= 5'b00001;
+			5'b00001: if(BaudTick) state <= 5'b00100;
+			5'b00100: if(BaudTick) state <= 5'b01000;  // start
+			5'b01000: if(BaudTick) state <= 5'b01001;  // bit 0
+			5'b01001: if(BaudTick) state <= 5'b01010;  // bit 1
+			5'b01010: if(BaudTick) state <= 5'b01011;  // bit 2
+			5'b01011: if(BaudTick) state <= 5'b01100;  // bit 3
+			5'b01100: if(BaudTick) state <= 5'b01101;  // bit 4
+			5'b01101: if(BaudTick) state <= 5'b01110;  // bit 5
+			5'b01110: if(BaudTick) state <= 5'b01111;  // bit 6
+			5'b01111: if(BaudTick) state <= 5'b00010;  // bit 7
+			5'b00010: if(BaudTick) state <= 5'b00011;  // stop1
+			//4'b0011: if(BaudTick) state <= 4'b0000;  // stop2
+			5'b00011: if(BaudTick) state <= 5'b10000;  // stop2
+			//default: if(BaudTick) state <= 4'b0000;
+		endcase
+	end
+	
+	// Output mux
+	reg muxbit;
+	always @( * )
+	case(state[2:0])
+		3'd0: muxbit <= TxD_dataD[0];
+		3'd1: muxbit <= TxD_dataD[1];
+		3'd2: muxbit <= TxD_dataD[2];
+		3'd3: muxbit <= TxD_dataD[3];
+		3'd4: muxbit <= TxD_dataD[4];
+		3'd5: muxbit <= TxD_dataD[5];
+		3'd6: muxbit <= TxD_dataD[6];
+		3'd7: muxbit <= TxD_dataD[7];
+	endcase
+	
+	// Put together the start, data and stop bits
+	reg TxD;
+	always @(posedge clk) TxD <= (state<4) | (state[3] & muxbit) | state[4];  // register the output to make it glitch free
+
+endmodule
diff --git a/fpga/serial/xilinx/digilent/spartan_3/remote_access.v b/fpga/serial/xilinx/digilent/spartan_3/remote_access.v
new file mode 120000
index 0000000..ccde8db
--- /dev/null
+++ b/fpga/serial/xilinx/digilent/spartan_3/remote_access.v
@@ -0,0 +1 @@
+../../../common/remote_access.v
\ No newline at end of file
diff --git a/fpga/serial/xilinx/digilent/spartan_3e/remote_access.v b/fpga/serial/xilinx/digilent/spartan_3e/remote_access.v
new file mode 120000
index 0000000..ccde8db
--- /dev/null
+++ b/fpga/serial/xilinx/digilent/spartan_3e/remote_access.v
@@ -0,0 +1 @@
+../../../common/remote_access.v
\ No newline at end of file
diff --git a/fpga/serial/xilinx/digilent/spartan_6/remote_access.v b/fpga/serial/xilinx/digilent/spartan_6/remote_access.v
new file mode 120000
index 0000000..ccde8db
--- /dev/null
+++ b/fpga/serial/xilinx/digilent/spartan_6/remote_access.v
@@ -0,0 +1 @@
+../../../common/remote_access.v
\ No newline at end of file
diff --git a/fpga/serial/xilinx/digilent/spartan_6/s6_remotefpga_test/data_storage.v b/fpga/serial/xilinx/digilent/spartan_6/s6_remotefpga_test/data_storage.v
new file mode 100644
index 0000000..7c9fcb0
--- /dev/null
+++ b/fpga/serial/xilinx/digilent/spartan_6/s6_remotefpga_test/data_storage.v
@@ -0,0 +1,33 @@
+`timescale 1ns / 1ps
+//////////////////////////////////////////////////////////////////////////////////
+//
+// (c) 2013 Timothy Pearson, Raptor Engineering
+// Released into the Public Domain
+//
+//////////////////////////////////////////////////////////////////////////////////
+
+module data_storage(
+	input clka,
+	input [7:0] dina,
+	input [(RAM_ADDR_BITS-1):0] addra,
+	input wea,
+	output reg [7:0] douta);
+
+	parameter RAM_ADDR_BITS = 14;
+	parameter RAM_WIDTH = 8;
+	
+	// Xilinx specific directive
+	(* RAM_STYLE="BLOCK" *)
+	
+	reg [RAM_WIDTH-1:0] data_storage_ram [(2**RAM_ADDR_BITS)-1:0];
+	
+	always @(posedge clka) begin
+	if (wea) begin
+			data_storage_ram[addra] <= dina;
+			douta <= dina;
+	end else begin
+			douta <= data_storage_ram[addra];
+		end
+	end
+
+endmodule
diff --git a/fpga/serial/xilinx/digilent/spartan_6/s6_remotefpga_test/main.ucf b/fpga/serial/xilinx/digilent/spartan_6/s6_remotefpga_test/main.ucf
new file mode 100644
index 0000000..c9a68dd
--- /dev/null
+++ b/fpga/serial/xilinx/digilent/spartan_6/s6_remotefpga_test/main.ucf
@@ -0,0 +1,8 @@
+# (c) 2013 Timothy Pearson, Raptor Engineering
+# Released into the Public Domain
+
+NET "clk"  LOC = "V10" | IOSTANDARD = "LVCMOS33";
+TIMESPEC TS_clk = PERIOD clk 100000 kHz;
+
+NET "serial_input"  LOC = "T12" | IOSTANDARD = "LVCMOS33";
+NET "serial_output"  LOC = "M10" | IOSTANDARD = "LVCMOS33";
diff --git a/fpga/serial/xilinx/digilent/spartan_6/s6_remotefpga_test/main.v b/fpga/serial/xilinx/digilent/spartan_6/s6_remotefpga_test/main.v
new file mode 100644
index 0000000..b852a6d
--- /dev/null
+++ b/fpga/serial/xilinx/digilent/spartan_6/s6_remotefpga_test/main.v
@@ -0,0 +1,330 @@
+`timescale 1ns / 1ps

+//////////////////////////////////////////////////////////////////////////////////

+// Company: 			Raptor Engineering

+// Engineer: 			Timothy Pearson

+// 

+// Design Name:			Remote Access Sample Design

+// Module Name:    		sample_demo

+// Project Name: 		Remote Access Sample Design

+// Target Devices: 		Any

+// Description: 		Remote Access Sample Design

+//

+// Dependencies: 

+//

+// (c) 2007-2013 Timothy Pearson, Raptor Engineering

+// Released into the Public Domain

+//

+//////////////////////////////////////////////////////////////////////////////////

+module main(

+	input clk,				// 100MHz clock

+	

+	// Serial port

+	input serial_input,

+	output serial_output);

+

+	parameter RAM_ADDR_BITS = 14;

+

+	wire [7:0] four_bit_output;		// Output from the user program to the remote access module

+	wire [7:0] four_bit_input;		// Input to the user program from the remote access module

+	wire [7:0] eight_bit_output;		// Output from the user program to the remote access module

+	wire [7:0] eight_bit_input;		// Input to the user program from the remote access module

+	wire [15:0] sixteen_bit_output;		// Output from the user program to the remote access module

+	wire [15:0] sixteen_bit_input;		// Input to the user program from the remote access module

+	

+	wire [7:0] remote_access_local_input;

+	

+	reg [7:0] serial_data_to_write;

+	wire sieze_serial_tx;

+	reg serial_tx_strobe = 0;

+	wire serial_data_received;

+	wire serial_rx_strobe;

+	

+	wire [5:0] lcd_data_in_address;

+	wire [7:0] lcd_data_in_data;

+	wire lcd_data_in_enable;

+

+	wire [7:0] led_segment_bus;

+	wire [3:0] led_digit_select;

+	

+	//-------------------------------------------------------------------------------------------------------

+	//

+	// Generate a 50MHz clock for the remote access module

+	//

+	//-------------------------------------------------------------------------------------------------------

+	

+	reg main_fifty_clock = 0;

+	always @(posedge clk) begin

+		main_fifty_clock = !main_fifty_clock;

+	end

+	

+	//-------------------------------------------------------------------------------------------------------

+	//

+	// Generate a 25MHz clock for the user progam

+	//

+	//-------------------------------------------------------------------------------------------------------

+	

+	reg clk_div_by_two = 0;

+	always @(posedge main_fifty_clock) begin

+		clk_div_by_two = !clk_div_by_two;

+	end

+

+	//-------------------------------------------------------------------------------------------------------

+	//

+	// Remote Access Module

+	//

+	// Inputs:

+	// .clk: 							50MHz clock

+	// .four_bit_input						4-bit input to the user program from the remote access module

+	// .eight_bit_input						8-bit input to the user program from the remote access module

+	// .sixteen_bit_input						16-bit input to the user program from the remote access module

+	// .serial_port_receiver					Input from the serial port's RxD (receive data) pin

+	// .remote_access_input_enable					Toggle remote access input vs. local input mode

+	// .local_input							Local input to the remote program

+	// .seize_serial_tx						Sieze control of the serial transmitter from the remote control system

+	// .serial_tx_data						Byte to be transmitted on transmit strobe if control has been siezed

+	// .serial_tx_strobe						Transmit serial data on posedge if transmit control has been siezed

+	// .lcd_data_in_address						LCD character address (0-32) to write character code to

+	// .lcd_data_in_data						LCD character code to write to the address specified

+	// .lcd_data_in_enable						Enable LCD data write

+	// .sram_wren_in						Synchronous SRAM write enable (1=write, 0=read)

+	// .sram_clock_in						Synchronous SRAM clock input

+	// .sram_data_in						Synchronous SRAM data input (8-bit)

+	// .sram_address_in						Synchronous SRAM address input (14-bit by default)

+	// .sram_processing_done					When 1, signal release of user control of synchronous SRAM

+	// .led_segment_bus						Connect directly to the 8 bits controlling the LED display segments

+	// .led_digit_select						Connect directly to the 4 bits enabling the LED display digits

+	//

+	// Outputs:

+	// .four_bit_output						4-bit output from the user program to the remote access module

+	// .eight_bit_output						8-bit output from the user program to the remote access module

+	// .sixteen_bit_output						16-bit output from the user program to the remote access module

+	// .lcd_data_out						Data output to the LCD

+	// .lcd_rs_out							RS signal output to the LCD

+	// .lcd_rw_out							RW signal output to the LCD

+	// .lcd_enable_out						ENABLE signal output to the LCD

+	// .serial_port_transmitter					Output to the serial port's TxD (transmit data) pin

+	// .serial_rx_data						The last received serial data

+	// .serial_rx_strobe						Recevied serial data valid while this signal is 1

+	// .sram_data_out						Synchronous SRAM data output (8-bit)

+	// .sram_available						Synchronous SRAM under user control

+	//

+	//-------------------------------------------------------------------------------------------------------

+

+	wire sram_wren_in;

+	wire sram_clock_in;

+	wire [7:0] sram_data_in;

+	wire [(RAM_ADDR_BITS-1):0] sram_address_in;

+	wire [7:0] sram_data_out;

+	wire sram_available;

+	wire sram_processing_done;

+

+	// Uncomment this block if no image processing module is provided

+	// assign sram_wren_in = 0;

+	// assign sram_data_in = 0;

+	// assign sram_address_in = 0;

+	// assign sram_processing_done = 1;

+	

+	assign sram_clock_in = main_fifty_clock;

+

+	remote_access #(RAM_ADDR_BITS) remote_access(.main_fifty_clock(main_fifty_clock), .remote_access_4_bit_output(four_bit_output),

+		.remote_access_4_bit_input(four_bit_input), .remote_access_8_bit_output(eight_bit_output),

+		.remote_access_8_bit_input(eight_bit_input), .remote_access_16_bit_output(sixteen_bit_output),

+		.remote_access_16_bit_input(sixteen_bit_input),

+		.serial_port_receiver(serial_input), .serial_port_transmitter(serial_output), .remote_access_input_enable(btn_center),

+		.local_input(remote_access_local_input), .seize_serial_tx(sieze_serial_tx), .serial_tx_data(serial_data_to_write),

+		.serial_tx_strobe(serial_tx_strobe), .serial_rx_data(serial_data_received), .serial_rx_strobe(serial_rx_strobe),

+		.lcd_data_in_address(lcd_data_in_address), .lcd_data_in_data(lcd_data_in_data), .lcd_data_in_enable(lcd_data_in_enable),

+		.sram_wren_in(sram_wren_in), .sram_clock_in(sram_clock_in), .sram_data_in(sram_data_in), .sram_address_in(sram_address_in),

+		.sram_data_out(sram_data_out), .sram_available(sram_available), .sram_processing_done(sram_processing_done),

+		.led_segment_bus(led_segment_bus), .led_digit_select(led_digit_select));

+	

+	assign remote_access_local_input[7:4] = 0;					// Local inputs

+	assign remote_access_local_input[3:0] = 0;					// Local inputs

+	assign led_bank = eight_bit_input;						// Mirror input to the LEDs

+	assign sieze_serial_tx = 0;							// Allow the remote control module to use the serial port

+											// If the user module must access the serial port directly, delete

+											// this assign statement and control this wire with your module.

+	

+	//-------------------------------------------------------------------------------------------------------

+	//

+	// User Module Instantiation

+	//

+	// Instantiate the simple user module to display remote access input values on the LEDs and to feed 

+	// button presses to the remote access module.  The 16-bit remote access lines are in loopback.

+	// Feel free to delete this instantiation and the module below to replace it with your module.

+	//

+	//-------------------------------------------------------------------------------------------------------

+	

+	sample_demo sample_demo(.clk(clk_div_by_two), .four_bit_input(four_bit_input), .four_bit_output(four_bit_output),

+		.eight_bit_input(eight_bit_input), .eight_bit_output(eight_bit_output), .sixteen_bit_input(sixteen_bit_input),

+		.sixteen_bit_output(sixteen_bit_output), .lcd_data_in_address(lcd_data_in_address),

+		.lcd_data_in_data(lcd_data_in_data), .lcd_data_in_enable(lcd_data_in_enable),

+		.led_segment_bus(led_segment_bus), .led_digit_select(led_digit_select));

+

+	//-------------------------------------------------------------------------------------------------------

+	//

+	// User Image Processing Module Instantiation

+	//

+	// Instantiate the simple userimage processing module to invert the bits in any images sent to the FPGA

+	//

+	//-------------------------------------------------------------------------------------------------------

+

+	sample_image_processing_demo sample_image_processing_demo(.clk(clk_div_by_two), .wren(sram_wren_in), .dout(sram_data_in), .addr(sram_address_in),

+		.din(sram_data_out), .enable(sram_available), .done(sram_processing_done));

+

+endmodule

+

+//-------------------------------------------------------------------------------------------------------

+//

+// Demo User Module

+//

+//-------------------------------------------------------------------------------------------------------

+

+module sample_demo(clk, four_bit_input, four_bit_output, eight_bit_input, eight_bit_output, sixteen_bit_input, sixteen_bit_output, lcd_data_in_address, lcd_data_in_data, lcd_data_in_enable, led_segment_bus, led_digit_select);

+	input clk;

+	

+	input [3:0] four_bit_input;

+	output reg [3:0] four_bit_output;

+	input [7:0] eight_bit_input;

+	output reg [7:0] eight_bit_output;

+	input [15:0] sixteen_bit_input;

+	output reg [15:0] sixteen_bit_output;

+	

+	output reg [5:0] lcd_data_in_address;

+	output reg [7:0] lcd_data_in_data;

+	output reg lcd_data_in_enable;

+

+	output reg [7:0] led_segment_bus;

+	output reg [3:0] led_digit_select;

+

+	reg [7:0] lcd_sample_counter = 48;							// Create a sample LCD display counter register

+	reg [31:0] lcd_character_change_timer = 0;						// Wait a certain number of cycles before loading a new character

+	reg [5:0] lcd_current_character = 0;							// The current character's address

+	

+	always @(posedge clk) begin

+		four_bit_output = four_bit_input;						// Loopback

+		eight_bit_output = eight_bit_input[3:0] + eight_bit_input[7:4];			// Sample adder

+		sixteen_bit_output = sixteen_bit_input[15:8] * sixteen_bit_input[7:0];		// Sample multiplier

+		

+		// Sample LCD display routine		

+		lcd_data_in_address = lcd_current_character;					// Character location on the LCD display

+		lcd_data_in_data = lcd_sample_counter;						// Character code to display

+		lcd_data_in_enable = 1;								// Enable data transmission

+		

+		// Cycle through all character positions

+		lcd_current_character = lcd_current_character + 1;

+		if (lcd_current_character > 31) begin

+			lcd_current_character = 16;

+		end

+		

+		// Cycle through the numbers 0 to 9 at one second intervals

+		lcd_character_change_timer = lcd_character_change_timer + 1;

+		if (lcd_character_change_timer > 25000000) begin				// Wait one second in between character changes

+			lcd_character_change_timer = 0;

+			lcd_sample_counter = lcd_sample_counter + 1;

+			if (lcd_sample_counter > 57) begin					// Character code for the digit 9

+				lcd_sample_counter = 48;					// Character code for the digit 0

+			end

+		end

+	end

+

+	// 7-segment LED display driver clock generator

+	reg sseg_clock;

+	reg [4:0] sseg_clock_counter;

+

+	always @(posedge clk) begin

+		sseg_clock_counter = sseg_clock_counter + 1;

+		if (sseg_clock_counter > 16) begin

+			sseg_clock_counter = 0;

+			sseg_clock = ~sseg_clock;

+		end

+	end

+

+	// 7-segment LED display driver

+	// led_segment_bus and led_digit_select are active low

+	// The bit sequence, MSB to LSB, is dp a b c d e f g

+	// Segment letters are taken from ug130.pdf page 15

+

+	// 0: 8'b10000001

+	// 1: 8'b11001111

+	// 2: 8'b10010010

+	// 3: 8'b10000110

+	reg [2:0] current_anode;

+	always @(posedge sseg_clock) begin

+		current_anode = current_anode + 1;

+		if (current_anode > 3) begin

+			current_anode = 0;

+		end

+

+		case (current_anode)

+			0: begin

+				led_digit_select = 4'b1110;

+				led_segment_bus = 8'b10000001;

+			end

+			1: begin

+				led_digit_select = 4'b1101;

+				led_segment_bus = 8'b11001111;

+			end

+			2: begin

+				led_digit_select = 4'b1011;

+				led_segment_bus = 8'b10010010;

+			end

+			3: begin

+				led_digit_select = 4'b0111;

+				led_segment_bus = 8'b10000110;

+			end

+		endcase

+	end

+endmodule

+

+//-------------------------------------------------------------------------------------------------------

+//

+// Demo User Image Processing Module

+//

+//-------------------------------------------------------------------------------------------------------

+

+module sample_image_processing_demo(clk, wren, dout, addr, din, enable, done);

+	parameter IMAGE_RAM_ADDR_BITS = 14;

+

+	input clk;

+

+	output reg wren;

+	output reg [7:0] dout;

+	output reg [(IMAGE_RAM_ADDR_BITS-1):0] addr;

+	input [7:0] din;

+	input enable;

+	output reg done;

+

+	reg prev_enable;

+	reg [IMAGE_RAM_ADDR_BITS:0] counter;

+	reg toggler;

+

+	always @(posedge clk) begin

+		if ((enable == 1) && (prev_enable == 0)) begin

+			counter = 0;

+			toggler = 0;

+		end

+		if ((enable == 1) && (done == 0)) begin

+			if (toggler == 0) begin

+				wren = 0;

+				addr = counter;

+				toggler = 1;

+			end else begin

+				dout = ~din;

+				wren = 1;

+				addr = counter;

+				counter = counter + 1;

+				if (counter > (2**IMAGE_RAM_ADDR_BITS)) begin

+					done = 1;

+				end

+				toggler = 0;

+			end

+		end

+		if (enable == 0) begin

+			done = 0;

+			addr = 0;

+			toggler = 0;

+		end

+		prev_enable = enable;

+	end

+endmodule

diff --git a/fpga/serial/xilinx/digilent/spartan_6/s6_remotefpga_test/remote_access.v b/fpga/serial/xilinx/digilent/spartan_6/s6_remotefpga_test/remote_access.v
new file mode 120000
index 0000000..a018632
--- /dev/null
+++ b/fpga/serial/xilinx/digilent/spartan_6/s6_remotefpga_test/remote_access.v
@@ -0,0 +1 @@
+../remote_access.v
\ No newline at end of file
diff --git a/fpga/serial/xilinx/digilent/spartan_6/s6_remotefpga_test/s6_remotefpga_test.xise b/fpga/serial/xilinx/digilent/spartan_6/s6_remotefpga_test/s6_remotefpga_test.xise
new file mode 100644
index 0000000..45b9e22
--- /dev/null
+++ b/fpga/serial/xilinx/digilent/spartan_6/s6_remotefpga_test/s6_remotefpga_test.xise
@@ -0,0 +1,366 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
+<project xmlns="http://www.xilinx.com/XMLSchema" xmlns:xil_pn="http://www.xilinx.com/XMLSchema">
+
+  <header>
+    <!-- ISE source project file created by Project Navigator.             -->
+    <!--                                                                   -->
+    <!-- This file contains project source information including a list of -->
+    <!-- project source files, project and process properties.  This file, -->
+    <!-- along with the project source files, is sufficient to open and    -->
+    <!-- implement in ISE Project Navigator.                               -->
+    <!--                                                                   -->
+    <!-- Copyright (c) 1995-2012 Xilinx, Inc.  All rights reserved. -->
+  </header>
+
+  <version xil_pn:ise_version="14.4" xil_pn:schema_version="2"/>
+
+  <files>
+    <file xil_pn:name="remote_access.v" xil_pn:type="FILE_VERILOG">
+      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="1"/>
+      <association xil_pn:name="Implementation" xil_pn:seqID="2"/>
+    </file>
+    <file xil_pn:name="main.v" xil_pn:type="FILE_VERILOG">
+      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="2"/>
+      <association xil_pn:name="Implementation" xil_pn:seqID="3"/>
+    </file>
+    <file xil_pn:name="main.ucf" xil_pn:type="FILE_UCF">
+      <association xil_pn:name="Implementation" xil_pn:seqID="0"/>
+    </file>
+    <file xil_pn:name="data_storage.v" xil_pn:type="FILE_VERILOG">
+      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="62"/>
+      <association xil_pn:name="Implementation" xil_pn:seqID="1"/>
+    </file>
+  </files>
+
+  <properties>
+    <property xil_pn:name="AES Initial Vector spartan6" xil_pn:value="" xil_pn:valueState="default"/>
+    <property xil_pn:name="AES Key (Hex String) spartan6" xil_pn:value="" xil_pn:valueState="default"/>
+    <property xil_pn:name="Add I/O Buffers" xil_pn:value="true" xil_pn:valueState="default"/>
+    <property xil_pn:name="Allow Logic Optimization Across Hierarchy" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Allow SelectMAP Pins to Persist" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Allow Unexpanded Blocks" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Allow Unmatched LOC Constraints" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Allow Unmatched Timing Group Constraints" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Analysis Effort Level" xil_pn:value="Standard" xil_pn:valueState="default"/>
+    <property xil_pn:name="Asynchronous To Synchronous" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Auto Implementation Compile Order" xil_pn:value="true" xil_pn:valueState="default"/>
+    <property xil_pn:name="Auto Implementation Top" xil_pn:value="true" xil_pn:valueState="default"/>
+    <property xil_pn:name="Automatic BRAM Packing" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Automatically Insert glbl Module in the Netlist" xil_pn:value="true" xil_pn:valueState="default"/>
+    <property xil_pn:name="Automatically Run Generate Target PROM/ACE File" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="BRAM Utilization Ratio" xil_pn:value="100" xil_pn:valueState="default"/>
+    <property xil_pn:name="Bring Out Global Set/Reset Net as a Port" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Bring Out Global Tristate Net as a Port" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Bus Delimiter" xil_pn:value="&lt;>" xil_pn:valueState="default"/>
+    <property xil_pn:name="Case" xil_pn:value="Maintain" xil_pn:valueState="default"/>
+    <property xil_pn:name="Case Implementation Style" xil_pn:value="None" xil_pn:valueState="default"/>
+    <property xil_pn:name="Change Device Speed To" xil_pn:value="-3" xil_pn:valueState="default"/>
+    <property xil_pn:name="Change Device Speed To Post Trace" xil_pn:value="-3" xil_pn:valueState="default"/>
+    <property xil_pn:name="Combinatorial Logic Optimization" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Compile EDK Simulation Library" xil_pn:value="false" xil_pn:valueState="non-default"/>
+    <property xil_pn:name="Compile SIMPRIM (Timing) Simulation Library" xil_pn:value="true" xil_pn:valueState="default"/>
+    <property xil_pn:name="Compile UNISIM (Functional) Simulation Library" xil_pn:value="true" xil_pn:valueState="default"/>
+    <property xil_pn:name="Compile XilinxCoreLib (CORE Generator) Simulation Library" xil_pn:value="true" xil_pn:valueState="default"/>
+    <property xil_pn:name="Compile for HDL Debugging" xil_pn:value="true" xil_pn:valueState="default"/>
+    <property xil_pn:name="Configuration Pin Done" xil_pn:value="Pull Up" xil_pn:valueState="default"/>
+    <property xil_pn:name="Configuration Pin Program" xil_pn:value="Pull Up" xil_pn:valueState="default"/>
+    <property xil_pn:name="Configuration Rate spartan6" xil_pn:value="2" xil_pn:valueState="default"/>
+    <property xil_pn:name="Correlate Output to Input Design" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Create ASCII Configuration File" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Create Binary Configuration File" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Create Bit File" xil_pn:value="true" xil_pn:valueState="default"/>
+    <property xil_pn:name="Create I/O Pads from Ports" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Create IEEE 1532 Configuration File spartan6" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Create Logic Allocation File" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Create Mask File" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Create ReadBack Data Files" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Cross Clock Analysis" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="DSP Utilization Ratio" xil_pn:value="100" xil_pn:valueState="default"/>
+    <property xil_pn:name="Delay Values To Be Read from SDF" xil_pn:value="Setup Time" xil_pn:valueState="default"/>
+    <property xil_pn:name="Device" xil_pn:value="xc6slx16" xil_pn:valueState="non-default"/>
+    <property xil_pn:name="Device Family" xil_pn:value="Spartan6" xil_pn:valueState="non-default"/>
+    <property xil_pn:name="Device Speed Grade/Select ABS Minimum" xil_pn:value="-3" xil_pn:valueState="default"/>
+    <property xil_pn:name="Disable Detailed Package Model Insertion" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Do Not Escape Signal and Instance Names in Netlist" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Done (Output Events)" xil_pn:value="Default (4)" xil_pn:valueState="default"/>
+    <property xil_pn:name="Drive Awake Pin During Suspend/Wake Sequence spartan6" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Drive Done Pin High" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Enable BitStream Compression" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Enable Cyclic Redundancy Checking (CRC) spartan6" xil_pn:value="true" xil_pn:valueState="default"/>
+    <property xil_pn:name="Enable Debugging of Serial Mode BitStream" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Enable External Master Clock spartan6" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Enable Hardware Co-Simulation" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Enable Internal Done Pipe" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Enable Message Filtering" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Enable Multi-Pin Wake-Up Suspend Mode spartan6" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Enable Multi-Threading" xil_pn:value="Off" xil_pn:valueState="default"/>
+    <property xil_pn:name="Enable Multi-Threading par spartan6" xil_pn:value="Off" xil_pn:valueState="default"/>
+    <property xil_pn:name="Enable Outputs (Output Events)" xil_pn:value="Default (5)" xil_pn:valueState="default"/>
+    <property xil_pn:name="Enable Suspend/Wake Global Set/Reset spartan6" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Encrypt Bitstream spartan6" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Encrypt Key Select spartan6" xil_pn:value="BBRAM" xil_pn:valueState="default"/>
+    <property xil_pn:name="Equivalent Register Removal Map" xil_pn:value="true" xil_pn:valueState="default"/>
+    <property xil_pn:name="Equivalent Register Removal XST" xil_pn:value="true" xil_pn:valueState="default"/>
+    <property xil_pn:name="Essential Bits" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Evaluation Development Board" xil_pn:value="None Specified" xil_pn:valueState="default"/>
+    <property xil_pn:name="Exclude Compilation of Deprecated EDK Cores" xil_pn:value="true" xil_pn:valueState="default"/>
+    <property xil_pn:name="Exclude Compilation of EDK Sub-Libraries" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Extra Cost Tables Map" xil_pn:value="0" xil_pn:valueState="default"/>
+    <property xil_pn:name="Extra Effort (Highest PAR level only)" xil_pn:value="None" xil_pn:valueState="default"/>
+    <property xil_pn:name="FPGA Start-Up Clock" xil_pn:value="CCLK" xil_pn:valueState="default"/>
+    <property xil_pn:name="FSM Encoding Algorithm" xil_pn:value="Auto" xil_pn:valueState="default"/>
+    <property xil_pn:name="FSM Style" xil_pn:value="LUT" xil_pn:valueState="default"/>
+    <property xil_pn:name="Filter Files From Compile Order" xil_pn:value="true" xil_pn:valueState="default"/>
+    <property xil_pn:name="Flatten Output Netlist" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Functional Model Target Language ArchWiz" xil_pn:value="Verilog" xil_pn:valueState="default"/>
+    <property xil_pn:name="Functional Model Target Language Coregen" xil_pn:value="Verilog" xil_pn:valueState="default"/>
+    <property xil_pn:name="Functional Model Target Language Schematic" xil_pn:value="Verilog" xil_pn:valueState="default"/>
+    <property xil_pn:name="GTS Cycle During Suspend/Wakeup Sequence spartan6" xil_pn:value="4" xil_pn:valueState="default"/>
+    <property xil_pn:name="GWE Cycle During Suspend/Wakeup Sequence spartan6" xil_pn:value="5" xil_pn:valueState="default"/>
+    <property xil_pn:name="Generate Architecture Only (No Entity Declaration)" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Generate Asynchronous Delay Report" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Generate Clock Region Report" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Generate Constraints Interaction Report" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Generate Constraints Interaction Report Post Trace" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Generate Datasheet Section" xil_pn:value="true" xil_pn:valueState="default"/>
+    <property xil_pn:name="Generate Datasheet Section Post Trace" xil_pn:value="true" xil_pn:valueState="default"/>
+    <property xil_pn:name="Generate Detailed MAP Report" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Generate Multiple Hierarchical Netlist Files" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Generate Post-Place &amp; Route Power Report" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Generate Post-Place &amp; Route Simulation Model" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Generate RTL Schematic" xil_pn:value="Yes" xil_pn:valueState="default"/>
+    <property xil_pn:name="Generate SAIF File for Power Optimization/Estimation Par" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Generate Testbench File" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Generate Timegroups Section" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Generate Timegroups Section Post Trace" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Generics, Parameters" xil_pn:value="" xil_pn:valueState="default"/>
+    <property xil_pn:name="Global Optimization Goal" xil_pn:value="AllClockNets" xil_pn:valueState="default"/>
+    <property xil_pn:name="Global Optimization map spartan6" xil_pn:value="Off" xil_pn:valueState="default"/>
+    <property xil_pn:name="Global Set/Reset Port Name" xil_pn:value="GSR_PORT" xil_pn:valueState="default"/>
+    <property xil_pn:name="Global Tristate Port Name" xil_pn:value="GTS_PORT" xil_pn:valueState="default"/>
+    <property xil_pn:name="Hierarchy Separator" xil_pn:value="/" xil_pn:valueState="default"/>
+    <property xil_pn:name="ISim UUT Instance Name" xil_pn:value="UUT" xil_pn:valueState="default"/>
+    <property xil_pn:name="Ignore User Timing Constraints Map" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Ignore User Timing Constraints Par" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Implementation Top" xil_pn:value="Module|main" xil_pn:valueState="non-default"/>
+    <property xil_pn:name="Implementation Top File" xil_pn:value="main.v" xil_pn:valueState="non-default"/>
+    <property xil_pn:name="Implementation Top Instance Path" xil_pn:value="/main" xil_pn:valueState="non-default"/>
+    <property xil_pn:name="Include 'uselib Directive in Verilog File" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Include SIMPRIM Models in Verilog File" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Include UNISIM Models in Verilog File" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Include sdf_annotate task in Verilog File" xil_pn:value="true" xil_pn:valueState="default"/>
+    <property xil_pn:name="Incremental Compilation" xil_pn:value="true" xil_pn:valueState="default"/>
+    <property xil_pn:name="Insert Buffers to Prevent Pulse Swallowing" xil_pn:value="true" xil_pn:valueState="default"/>
+    <property xil_pn:name="Instantiation Template Target Language Xps" xil_pn:value="Verilog" xil_pn:valueState="default"/>
+    <property xil_pn:name="JTAG Pin TCK" xil_pn:value="Pull Up" xil_pn:valueState="default"/>
+    <property xil_pn:name="JTAG Pin TDI" xil_pn:value="Pull Up" xil_pn:valueState="default"/>
+    <property xil_pn:name="JTAG Pin TDO" xil_pn:value="Pull Up" xil_pn:valueState="default"/>
+    <property xil_pn:name="JTAG Pin TMS" xil_pn:value="Pull Up" xil_pn:valueState="default"/>
+    <property xil_pn:name="Keep Hierarchy" xil_pn:value="No" xil_pn:valueState="default"/>
+    <property xil_pn:name="LUT Combining Map" xil_pn:value="Off" xil_pn:valueState="default"/>
+    <property xil_pn:name="LUT Combining Xst" xil_pn:value="Auto" xil_pn:valueState="default"/>
+    <property xil_pn:name="Language" xil_pn:value="VHDL" xil_pn:valueState="default"/>
+    <property xil_pn:name="Last Applied Goal" xil_pn:value="Balanced" xil_pn:valueState="default"/>
+    <property xil_pn:name="Last Applied Strategy" xil_pn:value="Xilinx Default (unlocked)" xil_pn:valueState="default"/>
+    <property xil_pn:name="Last Unlock Status" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Launch SDK after Export" xil_pn:value="true" xil_pn:valueState="default"/>
+    <property xil_pn:name="Library for Verilog Sources" xil_pn:value="" xil_pn:valueState="default"/>
+    <property xil_pn:name="Load glbl" xil_pn:value="true" xil_pn:valueState="default"/>
+    <property xil_pn:name="Manual Implementation Compile Order" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Map Slice Logic into Unused Block RAMs" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Mask Pins for Multi-Pin Wake-Up Suspend Mode spartan6" xil_pn:value="0x00" xil_pn:valueState="default"/>
+    <property xil_pn:name="Max Fanout" xil_pn:value="100000" xil_pn:valueState="default"/>
+    <property xil_pn:name="Maximum Compression" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Maximum Number of Lines in Report" xil_pn:value="1000" xil_pn:valueState="default"/>
+    <property xil_pn:name="Maximum Signal Name Length" xil_pn:value="20" xil_pn:valueState="default"/>
+    <property xil_pn:name="Move First Flip-Flop Stage" xil_pn:value="true" xil_pn:valueState="default"/>
+    <property xil_pn:name="Move Last Flip-Flop Stage" xil_pn:value="true" xil_pn:valueState="default"/>
+    <property xil_pn:name="MultiBoot: Insert IPROG CMD in the Bitfile spartan6" xil_pn:value="Enable" xil_pn:valueState="default"/>
+    <property xil_pn:name="MultiBoot: Next Configuration Mode spartan6" xil_pn:value="001" xil_pn:valueState="default"/>
+    <property xil_pn:name="MultiBoot: Starting Address for Golden Configuration spartan6" xil_pn:value="0x00000000" xil_pn:valueState="default"/>
+    <property xil_pn:name="MultiBoot: Starting Address for Next Configuration spartan6" xil_pn:value="0x00000000" xil_pn:valueState="default"/>
+    <property xil_pn:name="MultiBoot: Use New Mode for Next Configuration spartan6" xil_pn:value="true" xil_pn:valueState="default"/>
+    <property xil_pn:name="MultiBoot: User-Defined Register for Failsafe Scheme spartan6" xil_pn:value="0x0000" xil_pn:valueState="default"/>
+    <property xil_pn:name="Netlist Hierarchy" xil_pn:value="As Optimized" xil_pn:valueState="default"/>
+    <property xil_pn:name="Netlist Translation Type" xil_pn:value="Timestamp" xil_pn:valueState="default"/>
+    <property xil_pn:name="Number of Clock Buffers" xil_pn:value="16" xil_pn:valueState="default"/>
+    <property xil_pn:name="Number of Paths in Error/Verbose Report" xil_pn:value="3" xil_pn:valueState="default"/>
+    <property xil_pn:name="Number of Paths in Error/Verbose Report Post Trace" xil_pn:value="3" xil_pn:valueState="default"/>
+    <property xil_pn:name="Optimization Effort spartan6" xil_pn:value="Normal" xil_pn:valueState="default"/>
+    <property xil_pn:name="Optimization Goal" xil_pn:value="Speed" xil_pn:valueState="default"/>
+    <property xil_pn:name="Optimize Instantiated Primitives" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Other Bitgen Command Line Options spartan6" xil_pn:value="" xil_pn:valueState="default"/>
+    <property xil_pn:name="Other Compiler Options" xil_pn:value="" xil_pn:valueState="default"/>
+    <property xil_pn:name="Other Compiler Options Map" xil_pn:value="" xil_pn:valueState="default"/>
+    <property xil_pn:name="Other Compiler Options Par" xil_pn:value="" xil_pn:valueState="default"/>
+    <property xil_pn:name="Other Compiler Options Translate" xil_pn:value="" xil_pn:valueState="default"/>
+    <property xil_pn:name="Other Compxlib Command Line Options" xil_pn:value="" xil_pn:valueState="default"/>
+    <property xil_pn:name="Other Map Command Line Options" xil_pn:value="" xil_pn:valueState="default"/>
+    <property xil_pn:name="Other NETGEN Command Line Options" xil_pn:value="" xil_pn:valueState="default"/>
+    <property xil_pn:name="Other Ngdbuild Command Line Options" xil_pn:value="" xil_pn:valueState="default"/>
+    <property xil_pn:name="Other Place &amp; Route Command Line Options" xil_pn:value="" xil_pn:valueState="default"/>
+    <property xil_pn:name="Other Simulator Commands Behavioral" xil_pn:value="" xil_pn:valueState="default"/>
+    <property xil_pn:name="Other Simulator Commands Post-Map" xil_pn:value="" xil_pn:valueState="default"/>
+    <property xil_pn:name="Other Simulator Commands Post-Route" xil_pn:value="" xil_pn:valueState="default"/>
+    <property xil_pn:name="Other Simulator Commands Post-Translate" xil_pn:value="" xil_pn:valueState="default"/>
+    <property xil_pn:name="Other XPWR Command Line Options" xil_pn:value="" xil_pn:valueState="default"/>
+    <property xil_pn:name="Other XST Command Line Options" xil_pn:value="" xil_pn:valueState="default"/>
+    <property xil_pn:name="Output Extended Identifiers" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Output File Name" xil_pn:value="main" xil_pn:valueState="default"/>
+    <property xil_pn:name="Overwrite Compiled Libraries" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Pack I/O Registers into IOBs" xil_pn:value="Auto" xil_pn:valueState="default"/>
+    <property xil_pn:name="Pack I/O Registers/Latches into IOBs" xil_pn:value="Off" xil_pn:valueState="default"/>
+    <property xil_pn:name="Package" xil_pn:value="csg324" xil_pn:valueState="default"/>
+    <property xil_pn:name="Perform Advanced Analysis" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Perform Advanced Analysis Post Trace" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Perform Timing-Driven Packing and Placement" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Place &amp; Route Effort Level (Overall)" xil_pn:value="High" xil_pn:valueState="default"/>
+    <property xil_pn:name="Place And Route Mode" xil_pn:value="Normal Place and Route" xil_pn:valueState="default"/>
+    <property xil_pn:name="Place MultiBoot Settings into Bitstream spartan6" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Placer Effort Level Map" xil_pn:value="High" xil_pn:valueState="default"/>
+    <property xil_pn:name="Placer Extra Effort Map" xil_pn:value="None" xil_pn:valueState="default"/>
+    <property xil_pn:name="Port to be used" xil_pn:value="Auto - default" xil_pn:valueState="default"/>
+    <property xil_pn:name="Post Map Simulation Model Name" xil_pn:value="main_map.v" xil_pn:valueState="default"/>
+    <property xil_pn:name="Post Place &amp; Route Simulation Model Name" xil_pn:value="main_timesim.v" xil_pn:valueState="default"/>
+    <property xil_pn:name="Post Synthesis Simulation Model Name" xil_pn:value="main_synthesis.v" xil_pn:valueState="default"/>
+    <property xil_pn:name="Post Translate Simulation Model Name" xil_pn:value="main_translate.v" xil_pn:valueState="default"/>
+    <property xil_pn:name="Power Reduction Map spartan6" xil_pn:value="Off" xil_pn:valueState="default"/>
+    <property xil_pn:name="Power Reduction Par" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Power Reduction Xst" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Preferred Language" xil_pn:value="Verilog" xil_pn:valueState="default"/>
+    <property xil_pn:name="Produce Verbose Report" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Project Description" xil_pn:value="" xil_pn:valueState="default"/>
+    <property xil_pn:name="Property Specification in Project File" xil_pn:value="Store all values" xil_pn:valueState="default"/>
+    <property xil_pn:name="RAM Extraction" xil_pn:value="true" xil_pn:valueState="default"/>
+    <property xil_pn:name="RAM Style" xil_pn:value="Auto" xil_pn:valueState="default"/>
+    <property xil_pn:name="ROM Extraction" xil_pn:value="true" xil_pn:valueState="default"/>
+    <property xil_pn:name="ROM Style" xil_pn:value="Auto" xil_pn:valueState="default"/>
+    <property xil_pn:name="Read Cores" xil_pn:value="true" xil_pn:valueState="default"/>
+    <property xil_pn:name="Reduce Control Sets" xil_pn:value="Auto" xil_pn:valueState="default"/>
+    <property xil_pn:name="Regenerate Core" xil_pn:value="Under Current Project Setting" xil_pn:valueState="default"/>
+    <property xil_pn:name="Register Balancing" xil_pn:value="No" xil_pn:valueState="default"/>
+    <property xil_pn:name="Register Duplication Map" xil_pn:value="Off" xil_pn:valueState="default"/>
+    <property xil_pn:name="Register Duplication Xst" xil_pn:value="true" xil_pn:valueState="default"/>
+    <property xil_pn:name="Register Ordering spartan6" xil_pn:value="4" xil_pn:valueState="default"/>
+    <property xil_pn:name="Release Write Enable (Output Events)" xil_pn:value="Default (6)" xil_pn:valueState="default"/>
+    <property xil_pn:name="Rename Design Instance in Testbench File to" xil_pn:value="UUT" xil_pn:valueState="default"/>
+    <property xil_pn:name="Rename Top Level Architecture To" xil_pn:value="Structure" xil_pn:valueState="default"/>
+    <property xil_pn:name="Rename Top Level Entity to" xil_pn:value="" xil_pn:valueState="default"/>
+    <property xil_pn:name="Rename Top Level Module To" xil_pn:value="" xil_pn:valueState="default"/>
+    <property xil_pn:name="Report Fastest Path(s) in Each Constraint" xil_pn:value="true" xil_pn:valueState="default"/>
+    <property xil_pn:name="Report Fastest Path(s) in Each Constraint Post Trace" xil_pn:value="true" xil_pn:valueState="default"/>
+    <property xil_pn:name="Report Paths by Endpoint" xil_pn:value="3" xil_pn:valueState="default"/>
+    <property xil_pn:name="Report Paths by Endpoint Post Trace" xil_pn:value="3" xil_pn:valueState="default"/>
+    <property xil_pn:name="Report Type" xil_pn:value="Verbose Report" xil_pn:valueState="default"/>
+    <property xil_pn:name="Report Type Post Trace" xil_pn:value="Verbose Report" xil_pn:valueState="default"/>
+    <property xil_pn:name="Report Unconstrained Paths" xil_pn:value="" xil_pn:valueState="default"/>
+    <property xil_pn:name="Report Unconstrained Paths Post Trace" xil_pn:value="" xil_pn:valueState="default"/>
+    <property xil_pn:name="Reset On Configuration Pulse Width" xil_pn:value="100" xil_pn:valueState="default"/>
+    <property xil_pn:name="Resource Sharing" xil_pn:value="true" xil_pn:valueState="default"/>
+    <property xil_pn:name="Retain Hierarchy" xil_pn:value="true" xil_pn:valueState="default"/>
+    <property xil_pn:name="Retry Configuration if CRC Error Occurs spartan6" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Run Design Rules Checker (DRC)" xil_pn:value="true" xil_pn:valueState="default"/>
+    <property xil_pn:name="Run for Specified Time" xil_pn:value="true" xil_pn:valueState="default"/>
+    <property xil_pn:name="Run for Specified Time Map" xil_pn:value="true" xil_pn:valueState="default"/>
+    <property xil_pn:name="Run for Specified Time Par" xil_pn:value="true" xil_pn:valueState="default"/>
+    <property xil_pn:name="Run for Specified Time Translate" xil_pn:value="true" xil_pn:valueState="default"/>
+    <property xil_pn:name="Safe Implementation" xil_pn:value="No" xil_pn:valueState="default"/>
+    <property xil_pn:name="Security" xil_pn:value="Enable Readback and Reconfiguration" xil_pn:valueState="default"/>
+    <property xil_pn:name="Selected Simulation Root Source Node Behavioral" xil_pn:value="" xil_pn:valueState="default"/>
+    <property xil_pn:name="Selected Simulation Root Source Node Post-Map" xil_pn:value="" xil_pn:valueState="default"/>
+    <property xil_pn:name="Selected Simulation Root Source Node Post-Route" xil_pn:value="" xil_pn:valueState="default"/>
+    <property xil_pn:name="Selected Simulation Root Source Node Post-Translate" xil_pn:value="" xil_pn:valueState="default"/>
+    <property xil_pn:name="Selected Simulation Source Node" xil_pn:value="UUT" xil_pn:valueState="default"/>
+    <property xil_pn:name="Set SPI Configuration Bus Width spartan6" xil_pn:value="1" xil_pn:valueState="default"/>
+    <property xil_pn:name="Setup External Master Clock Division spartan6" xil_pn:value="1" xil_pn:valueState="default"/>
+    <property xil_pn:name="Shift Register Extraction" xil_pn:value="true" xil_pn:valueState="default"/>
+    <property xil_pn:name="Shift Register Minimum Size spartan6" xil_pn:value="2" xil_pn:valueState="default"/>
+    <property xil_pn:name="Show All Models" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Simulation Model Target" xil_pn:value="Verilog" xil_pn:valueState="default"/>
+    <property xil_pn:name="Simulation Run Time ISim" xil_pn:value="1000 ns" xil_pn:valueState="default"/>
+    <property xil_pn:name="Simulation Run Time Map" xil_pn:value="1000 ns" xil_pn:valueState="default"/>
+    <property xil_pn:name="Simulation Run Time Par" xil_pn:value="1000 ns" xil_pn:valueState="default"/>
+    <property xil_pn:name="Simulation Run Time Translate" xil_pn:value="1000 ns" xil_pn:valueState="default"/>
+    <property xil_pn:name="Simulator" xil_pn:value="ISim (VHDL/Verilog)" xil_pn:valueState="default"/>
+    <property xil_pn:name="Slice Utilization Ratio" xil_pn:value="100" xil_pn:valueState="default"/>
+    <property xil_pn:name="Specify 'define Macro Name and Value" xil_pn:value="" xil_pn:valueState="default"/>
+    <property xil_pn:name="Specify Top Level Instance Names Behavioral" xil_pn:value="Default" xil_pn:valueState="default"/>
+    <property xil_pn:name="Specify Top Level Instance Names Post-Map" xil_pn:value="Default" xil_pn:valueState="default"/>
+    <property xil_pn:name="Specify Top Level Instance Names Post-Route" xil_pn:value="Default" xil_pn:valueState="default"/>
+    <property xil_pn:name="Specify Top Level Instance Names Post-Translate" xil_pn:value="Default" xil_pn:valueState="default"/>
+    <property xil_pn:name="Speed Grade" xil_pn:value="-3" xil_pn:valueState="default"/>
+    <property xil_pn:name="Starting Placer Cost Table (1-100) Map spartan6" xil_pn:value="1" xil_pn:valueState="default"/>
+    <property xil_pn:name="Synthesis Tool" xil_pn:value="XST (VHDL/Verilog)" xil_pn:valueState="default"/>
+    <property xil_pn:name="Target Simulator" xil_pn:value="Please Specify" xil_pn:valueState="default"/>
+    <property xil_pn:name="Target UCF File Name" xil_pn:value="main.ucf" xil_pn:valueState="non-default"/>
+    <property xil_pn:name="Timing Mode Map" xil_pn:value="Performance Evaluation" xil_pn:valueState="default"/>
+    <property xil_pn:name="Timing Mode Par" xil_pn:value="Performance Evaluation" xil_pn:valueState="default"/>
+    <property xil_pn:name="Top-Level Module Name in Output Netlist" xil_pn:value="" xil_pn:valueState="default"/>
+    <property xil_pn:name="Top-Level Source Type" xil_pn:value="HDL" xil_pn:valueState="default"/>
+    <property xil_pn:name="Trim Unconnected Signals" xil_pn:value="true" xil_pn:valueState="default"/>
+    <property xil_pn:name="Tristate On Configuration Pulse Width" xil_pn:value="0" xil_pn:valueState="default"/>
+    <property xil_pn:name="Unused IOB Pins" xil_pn:value="Pull Down" xil_pn:valueState="default"/>
+    <property xil_pn:name="Use 64-bit PlanAhead on 64-bit Systems" xil_pn:value="true" xil_pn:valueState="default"/>
+    <property xil_pn:name="Use Clock Enable" xil_pn:value="Auto" xil_pn:valueState="default"/>
+    <property xil_pn:name="Use Custom Project File Behavioral" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Use Custom Project File Post-Map" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Use Custom Project File Post-Route" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Use Custom Project File Post-Translate" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Use Custom Simulation Command File Behavioral" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Use Custom Simulation Command File Map" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Use Custom Simulation Command File Par" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Use Custom Simulation Command File Translate" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Use Custom Waveform Configuration File Behav" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Use Custom Waveform Configuration File Map" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Use Custom Waveform Configuration File Par" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Use Custom Waveform Configuration File Translate" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Use DSP Block spartan6" xil_pn:value="Auto" xil_pn:valueState="default"/>
+    <property xil_pn:name="Use LOC Constraints" xil_pn:value="true" xil_pn:valueState="default"/>
+    <property xil_pn:name="Use RLOC Constraints" xil_pn:value="Yes" xil_pn:valueState="default"/>
+    <property xil_pn:name="Use Smart Guide" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Use Synchronous Reset" xil_pn:value="Auto" xil_pn:valueState="default"/>
+    <property xil_pn:name="Use Synchronous Set" xil_pn:value="Auto" xil_pn:valueState="default"/>
+    <property xil_pn:name="Use Synthesis Constraints File" xil_pn:value="true" xil_pn:valueState="default"/>
+    <property xil_pn:name="User Browsed Strategy Files" xil_pn:value="" xil_pn:valueState="default"/>
+    <property xil_pn:name="UserID Code (8 Digit Hexadecimal)" xil_pn:value="0xFFFFFFFF" xil_pn:valueState="default"/>
+    <property xil_pn:name="VCCAUX Voltage Level spartan6" xil_pn:value="2.5V" xil_pn:valueState="default"/>
+    <property xil_pn:name="VHDL Source Analysis Standard" xil_pn:value="VHDL-93" xil_pn:valueState="default"/>
+    <property xil_pn:name="Value Range Check" xil_pn:value="false" xil_pn:valueState="default"/>
+    <property xil_pn:name="Verilog Macros" xil_pn:value="" xil_pn:valueState="default"/>
+    <property xil_pn:name="Wait for DCM and PLL Lock (Output Events) spartan6" xil_pn:value="Default (NoWait)" xil_pn:valueState="default"/>
+    <property xil_pn:name="Wakeup Clock spartan6" xil_pn:value="Startup Clock" xil_pn:valueState="default"/>
+    <property xil_pn:name="Watchdog Timer Value spartan6" xil_pn:value="0xFFFF" xil_pn:valueState="default"/>
+    <property xil_pn:name="Working Directory" xil_pn:value="." xil_pn:valueState="non-default"/>
+    <property xil_pn:name="Write Timing Constraints" xil_pn:value="false" xil_pn:valueState="default"/>
+    <!--                                                                                  -->
+    <!-- The following properties are for internal use only. These should not be modified.-->
+    <!--                                                                                  -->
+    <property xil_pn:name="PROP_BehavioralSimTop" xil_pn:value="" xil_pn:valueState="default"/>
+    <property xil_pn:name="PROP_DesignName" xil_pn:value="s6_remotefpga_test" xil_pn:valueState="non-default"/>
+    <property xil_pn:name="PROP_DevFamilyPMName" xil_pn:value="spartan6" xil_pn:valueState="default"/>
+    <property xil_pn:name="PROP_FPGAConfiguration" xil_pn:value="FPGAConfiguration" xil_pn:valueState="default"/>
+    <property xil_pn:name="PROP_PostMapSimTop" xil_pn:value="" xil_pn:valueState="default"/>
+    <property xil_pn:name="PROP_PostParSimTop" xil_pn:value="" xil_pn:valueState="default"/>
+    <property xil_pn:name="PROP_PostSynthSimTop" xil_pn:value="" xil_pn:valueState="default"/>
+    <property xil_pn:name="PROP_PostXlateSimTop" xil_pn:value="" xil_pn:valueState="default"/>
+    <property xil_pn:name="PROP_PreSynthesis" xil_pn:value="PreSynthesis" xil_pn:valueState="default"/>
+    <property xil_pn:name="PROP_intProjectCreationTimestamp" xil_pn:value="2013-03-03T01:45:17" xil_pn:valueState="non-default"/>
+    <property xil_pn:name="PROP_intWbtProjectID" xil_pn:value="6E464769C51A5363CC11E7DB5F4485BE" xil_pn:valueState="non-default"/>
+    <property xil_pn:name="PROP_intWorkingDirLocWRTProjDir" xil_pn:value="Same" xil_pn:valueState="non-default"/>
+    <property xil_pn:name="PROP_intWorkingDirUsed" xil_pn:value="No" xil_pn:valueState="non-default"/>
+  </properties>
+
+  <bindings/>
+
+  <libraries/>
+
+  <autoManagedFiles>
+    <!-- The following files are identified by `include statements in verilog -->
+    <!-- source files and are automatically managed by Project Navigator.     -->
+    <!--                                                                      -->
+    <!-- Do not hand-edit this section, as it will be overwritten when the    -->
+    <!-- project is analyzed based on files automatically identified as       -->
+    <!-- include files.                                                       -->
+  </autoManagedFiles>
+
+</project>