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TSConf_MiST/rtl/sound/jt12/jt12_sumch.v
2020-05-11 23:17:53 +08:00

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Verilog

/* This file is part of JT12.
JT12 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.
JT12 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 JT12. If not, see <http://www.gnu.org/licenses/>.
Author: Jose Tejada Gomez. Twitter: @topapate
Version: 1.0
Date: 1-31-2017
*/
`timescale 1ns / 1ps
module jt12_sumch
(
input [4:0] chin,
output reg [4:0] chout
);
reg [2:0] aux;
always @(*) begin
aux <= chin[2:0] + 3'd1;
chout[2:0] <= aux[1:0]==2'b11 ? aux+3'd1 : aux;
chout[4:3] <= chin[2:0]==3'd6 ? chin[4:3]+2'd1 : chin[4:3];
end
endmodule