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oh/common/hdl/mux3.v
aolofsson b151bc90e1 More file organization
Adding some more utility functions
2014-11-06 12:19:39 -05:00

52 lines
1.4 KiB
Verilog

/*
Copyright (C) 2013 Adapteva, Inc.
Contributed by Andreas Olofsson <support@adapteva.com>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program (see the file COPYING). If not, see
<http://www.gnu.org/licenses/>.
*/
module mux3(/*AUTOARG*/
// Outputs
out,
// Inputs
in0, in1, in2, sel0, sel1, sel2
);
parameter DW=99;
//data inputs
input [DW-1:0] in0;
input [DW-1:0] in1;
input [DW-1:0] in2;
//select inputs
input sel0;
input sel1;
input sel2;
output [DW-1:0] out;
assign out[DW-1:0] = ({(DW){sel0}} & in0[DW-1:0] |
{(DW){sel1}} & in1[DW-1:0] |
{(DW){sel2}} & in2[DW-1:0]);
// synthesis translate_off
always @*
if((sel0+sel1+sel2>1) && ($time>0))
$display("ERROR>>Arbitration failure in cell %m");
// synthesis translate_on
endmodule // mux3