top.v

viterbi译码器的一种fpga实现

`include "defs.h"

module input_signal(out,  reset,  clk);
output [8-1:0]out;
input  reset,  clk;
reg    [`S-1:0] enc_bit01,  enc_bit02;

assign out = {enc_bit01,  enc_bit02};

initial
	begin
	`include "in_signal.v"
	end

endmodule

module test;


/////////////

wire [8-1:0] encoded_signal;
reg  [1:0]  sel_enc;
reg         clk,  reset;
wire [1:0] decoded_signal;

input_signal is(encoded_signal,  reset,  clk);
decoder dec(encoded_signal,  decoded_signal,  reset,  clk);

/////////

always #20 clk = ~clk;

///////////

always @(posedge clk)
    $display(, ,  "decoded_signal : %b",  decoded_signal,  "\n");

initial
	begin

//	$shm_open("waves.shm");
//	$shm_probe(test,  "AS");
	
	clk = 0;
	reset = 1;


	@(posedge clk)
	@(posedge clk)
		reset = #5 0;
	@(posedge clk)
	@(posedge clk)
	@(posedge clk)
	@(posedge clk)
	@(posedge clk)
	@(posedge clk)
	@(posedge clk)
	@(posedge clk)
	@(posedge clk)
	@(posedge clk)
	@(posedge clk)
	@(posedge clk)
	@(posedge clk)
	@(posedge clk)
	@(posedge clk)
	@(posedge clk)
	@(posedge clk)
	@(posedge clk)
	@(posedge clk)
	@(posedge clk)
	@(posedge clk)
	@(posedge clk)
	@(posedge clk)
	@(posedge clk)
	@(posedge clk)
	@(posedge clk)
	@(posedge clk)
	@(posedge clk)
	@(posedge clk)
	@(posedge clk)
	@(posedge clk)
	@(posedge clk)
	@(posedge clk)
	@(posedge clk)
	@(posedge clk)
	@(posedge clk)
	@(posedge clk)
	@(posedge clk)
//	$shm_close();
	$finish;

	end
	
endmodule