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

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////  Logic functions                                             ////

////                                                              ////

////  Description                                                 ////

////  Logic functions such as multiplexers                        ////

////                                                              ////

////                                                              ////

////  To Do:                                                      ////

////   -                                                          ////

////                                                              ////

////  Author(s):                                                  ////

////      - Michael Unneback, unneback@opencores.org              ////

////        ORSoC AB                                              ////

////                                                              ////

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

////                                                              ////

//// Copyright (C) 2010 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 vl_mux_andor ( a, sel, dout);

parameter width = 32;

parameter nr_of_ports = 4;

input [nr_of_ports*width-1:0] a;

input [nr_of_ports-1:0] sel;

output reg [width-1:0] dout;

always @ (a, sel)

begin

    dout = a[width-1:0] & {width{sel[0]}};

    for (i=nr_of_ports-2;i<nr_of_ports;i=i+1)

        dout = (a[i*width-1:(i-1)*width] & {width{sel[i]}}) | dout;

end

endmodule

module vl_mux2_andor ( a1, a0, sel, dout);

parameter width = 32;

localparam nr_of_ports = 2;

input [width-1:0] a1, a0;

input [nr_of_ports-1:0] sel;

output [width-1:0] dout;

vl_mux_andor

    # ( .width(width), .nr_of_ports(nr_of_ports)

    mux0( .a({a1,a0}), .sel(sel), .dout(dout));

/*

wire [width-1:0] tmp [nr_of_ports-1:0];

integer i;

// and

assign tmp[0] = {width{sel[0]}} & a0;

assign tmp[1] = {width{sel[1]}} & a1;

// or

assign dout = tmp[1] | tmp[0];

*/

endmodule

module vl_mux3_andor ( a2, a1, a0, sel, dout);

parameter width = 32;

localparam nr_of_ports = 3;

input [width-1:0] a2, a1, a0;

input [nr_of_ports-1:0] sel;

output [width-1:0] dout;

vl_mux_andor

    # ( .width(width), .nr_of_ports(nr_of_ports)

    mux0( .a({a2,a1,a0}), .sel(sel), .dout(dout));

/*

wire [width-1:0] tmp [nr_of_ports-1:0];

integer i;

// and

assign tmp[0] = {width{sel[0]}} & a0;

assign tmp[1] = {width{sel[1]}} & a1;

assign tmp[2] = {width{sel[2]}} & a2;

// or

assign dout = tmp[2] | tmp[1] | tmp[0];

*/

endmodule

module vl_mux4_andor ( a3, a2, a1, a0, sel, dout);

parameter width = 32;

localparam nr_of_ports = 4;

input [width-1:0] a3, a2, a1, a0;

input [nr_of_ports-1:0] sel;

output [width-1:0] dout;

vl_mux_andor

    # ( .width(width), .nr_of_ports(nr_of_ports)

    mux0( .a({a3,a2,a1,a0}), .sel(sel), .dout(dout));

/*

wire [width-1:0] tmp [nr_of_ports-1:0];

integer i;

// and

assign tmp[0] = {width{sel[0]}} & a0;

assign tmp[1] = {width{sel[1]}} & a1;

assign tmp[2] = {width{sel[2]}} & a2;

assign tmp[3] = {width{sel[3]}} & a3;

// or

assign dout = tmp[3] | tmp[2] | tmp[1] | tmp[0];

*/

endmodule

module vl_mux5_andor ( a4, a3, a2, a1, a0, sel, dout);

parameter width = 32;

localparam nr_of_ports = 5;

input [width-1:0] a4, a3, a2, a1, a0;

input [nr_of_ports-1:0] sel;

output [width-1:0] dout;

vl_mux_andor

    # ( .width(width), .nr_of_ports(nr_of_ports)

    mux0( .a({a4,a3,a2,a1,a0}), .sel(sel), .dout(dout));

/*

wire [width-1:0] tmp [nr_of_ports-1:0];

integer i;

// and

assign tmp[0] = {width{sel[0]}} & a0;

assign tmp[1] = {width{sel[1]}} & a1;

assign tmp[2] = {width{sel[2]}} & a2;

assign tmp[3] = {width{sel[3]}} & a3;

assign tmp[4] = {width{sel[4]}} & a4;

// or

assign dout = tmp[4] | tmp[3] | tmp[2] | tmp[1] | tmp[0];

*/

endmodule

module vl_mux6_andor ( a5, a4, a3, a2, a1, a0, sel, dout);

parameter width = 32;

localparam nr_of_ports = 6;

input [width-1:0] a5, a4, a3, a2, a1, a0;

input [nr_of_ports-1:0] sel;

output [width-1:0] dout;

vl_mux_andor

    # ( .width(width), .nr_of_ports(nr_of_ports)

    mux0( .a({a5,a4,a3,a2,a1,a0}), .sel(sel), .dout(dout));

/*

wire [width-1:0] tmp [nr_of_ports-1:0];

integer i;

// and

assign tmp[0] = {width{sel[0]}} & a0;

assign tmp[1] = {width{sel[1]}} & a1;

assign tmp[2] = {width{sel[2]}} & a2;

assign tmp[3] = {width{sel[3]}} & a3;

assign tmp[4] = {width{sel[4]}} & a4;

assign tmp[5] = {width{sel[5]}} & a5;

// or

assign dout = tmp[5] | tmp[4] | tmp[3] | tmp[2] | tmp[1] | tmp[0];

*/

endmodule