module ex9_top (
	input CLOCK_50,

	input [3:0] KEY,

	output [6:0] HEX0,
	output [6:0] HEX1,
	output [6:0] HEX2,
	output [6:0] HEX3,
	output [6:0] HEX4,
	output [9:0] LEDR
);
	// Define 1ms and 0.5s (half-second)
	wire CLOCK_MS;
	wire CLOCK_HS;

	wire [15:0] B;
	wire [3:0] BCD_0;
	wire [3:0] BCD_1;
	wire [3:0] BCD_2;
	wire [3:0] BCD_3;
	wire [3:0] BCD_4;
		
	wire TIME_OUT;
	wire START_DELAY;
	wire EN_LFSR;
	wire [13:0] PRBS;
	wire COUNT;
	wire [15:0] TIME;
	wire COUNT_CLEAR;
	
	divider_50000 DIV0 (CLOCK_50, CLOCK_MS);
	divider_2500  DIV1 (CLOCK_50, CLOCK_MS, CLOCK_HS);

	fsm FSM0 (CLOCK_MS, CLOCK_HS, KEY[3], TIME_OUT, START_DELAY, EN_LFSR, LEDR, COUNT, COUNT_CLEAR);

	delay DELAY0 (CLOCK_MS, PRBS, START_DELAY, TIME_OUT);

	lfsr LSFR0 (CLOCK_MS, EN_LFSR, PRBS);

	timer TIME0 (CLOCK_MS, COUNT, COUNT_CLEAR, TIME);
	
	bin2bcd_16 BIN0 (TIME, BCD_0, BCD_1, BCD_2, BCD_3, BCD_4);    

   hex_to_7seg SEG0 (HEX0,BCD_0);
	hex_to_7seg SEG1 (HEX1,BCD_1);
	hex_to_7seg SEG2 (HEX2,BCD_2);
	hex_to_7seg SEG3 (HEX3,BCD_3);
	hex_to_7seg SEG4 (HEX4,BCD_4);
endmodule