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URL https://opencores.org/ocsvn/generic_parameterized_mux/generic_parameterized_mux/trunk

Subversion Repositories generic_parameterized_mux

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Rev 1 → Rev 2

/trunk/bench/tb_Nx1_mux.v
0,0 → 1,47
module tb_Nx1_mux;
 
reg [7:0]D;
reg [2:0]S;
wire Y;
 
Nx1_mux #(.N(8)) DUT(.D(D), .S(S), .Y(Y));
 
task initialize;
begin
D=8'b0000;
S=4'b00;
end
endtask
 
task select(input [2:0]i);
begin
S=i;
end
endtask
 
task load(input [7:0] data);
begin
D=data;
end
endtask
 
integer i , j;
initial begin
$dumpfile ("Nx1_mux.vcd");
$dumpvars (0, tb_Nx1_mux);
for (i=0; i<8 ; i=i+1)
begin
initialize;
#10;
select(i);
for(j=0;j<256;j=j+1)
begin
load(j);
#10;
end
end
$finish;
end
initial $monitor("D = %b, S = %b, Y = %b",D,S,Y);
 
endmodule
/trunk/rtl/Nx1_mux.v
0,0 → 1,55
 
////////////////////////////////////////////////////////////////// ////
//// ////
 
//// ////
//// This file is part of the XXX project ////
//// http://www.opencores.org/cores/xxx/ ////
//// ////
//// Description ////
//// Implementation of Genric Nx1 parameterized Multiplexer. ////
//// ////
//// To Do: ////
//// - ////
//// ////
//// Author(s): ////
//// - Kanish R, Kanish@opencores.org ////
//// ////
//////////////////////////////////////////////////////////////////////
//// ////
//// Copyright (C) 2009 Authors and OPENCORES.ORG ////
//// ////
//// This source file may be used and distributed without ////
//// restriction provided that this copyright statement is not ////
//// removed from the file and that any derivative work contains ////
//// the original copyright notice and the associated disclaimer. ////
//// ////
//// This source file is free software; you can redistribute it ////
//// and/or modify it under the terms of the GNU Lesser General ////
//// Public License as published by the Free Software Foundation; ////
//// either version 2.1 of the License, or (at your option) any ////
//// later version. ////
//// ////
//// This source is distributed in the hope that it will be ////
//// useful, but WITHOUT ANY WARRANTY; without even the implied ////
//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR ////
//// PURPOSE. See the GNU Lesser General Public License for more ////
//// details. ////
//// ////
//// You should have received a copy of the GNU Lesser General ////
//// Public License along with this source; if not, download it ////
//// from http://www.opencores.org/lgpl.shtml ////
//// //// ///
///////////////////////////////////////////////////////////////////
 
 
module Nx1_mux(D,Y,S);
parameter N=2;
input [N-1:0]D;
input [$clog2(N)-1:0]S;
integer i;
output reg Y;
always @(*) begin
Y=D[S];
end
endmodule

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