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Update sys. Re-organize the sources.

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sorgelig
2020-05-11 23:17:53 +08:00
parent 0c1cb37dba
commit 5a66d5ec1c
102 changed files with 1996 additions and 1364 deletions
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rtl/sound/jt12/jt12_mod.v Normal file
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`timescale 1ns / 1ps
/* This file is part of JT12.
JT12 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.
JT12 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 JT12. If not, see <http://www.gnu.org/licenses/>.
Author: Jose Tejada Gomez. Twitter: @topapate
Version: 1.0
Date: 27-1-2017
*/
module jt12_mod(
input s1_enters,
input s2_enters,
input s3_enters,
input s4_enters,
input [2:0] alg_I,
output reg use_prevprev1,
output reg use_internal_x,
output reg use_internal_y,
output reg use_prev2,
output reg use_prev1
);
reg [7:0] alg_hot;
always @(*) begin
case( alg_I )
3'd0: alg_hot <= 8'h1; // D0
3'd1: alg_hot <= 8'h2; // D1
3'd2: alg_hot <= 8'h4; // D2
3'd3: alg_hot <= 8'h8; // D3
3'd4: alg_hot <= 8'h10; // D4
3'd5: alg_hot <= 8'h20; // D5
3'd6: alg_hot <= 8'h40; // D6
3'd7: alg_hot <= 8'h80; // D7
endcase
end
always @(*) begin
use_prevprev1 <= s1_enters | (s3_enters&alg_hot[5]);
use_prev2 <= (s3_enters&(|alg_hot[2:0])) | (s4_enters&alg_hot[3]);
use_internal_x <= s4_enters & alg_hot[2];
use_internal_y <= s4_enters & (|{alg_hot[4:3],alg_hot[1:0]});
use_prev1 <= s1_enters | (s3_enters&alg_hot[1]) |
(s2_enters&(|{alg_hot[6:3],alg_hot[0]}) )|
(s4_enters&(|{alg_hot[5],alg_hot[2]}));
end
/*
always @(*) begin
use_prevprev1 <= s1_enters || (s3_enters&&(alg_I==3'd5));
use_prev2 <= (s3_enters&&(alg_I<=3'd2)) || (s4_enters&&(alg_I==3'd3));
use_internal_x <= s4_enters && (alg_I==3'd2);
use_internal_y <= s4_enters && (alg_I<=3'd4 && alg_I!=3'd2);
use_prev1 <= s1_enters || (s3_enters&&(alg_I==3'd1)) ||
(s2_enters&&(alg_I==3'd0 ||
alg_I==3'd3 || alg_I==3'd4 ||
alg_I==3'd5 || alg_I==3'd6)) ||
(s4_enters&&(alg_I==3'd2 || alg_I==3'd5));
end
always @(*) begin
case( {s1_enters, s3_enters, s2_enters, s4_enters} ) // synthesis parallel_case
4'b1000: begin // S1
use_prevprev1 <= 1'b1;
use_prev2 <= 1'b0;
use_internal_x<= 1'b0;
use_internal_y<= 1'b0;
use_prev1 <= 1'b1;
end
4'b0100: begin // S3
use_prevprev1 <= alg_I==3'd5;
use_prev2 <= (alg_I<=3'd2);
use_internal_x<= 1'b0;
use_internal_y<= 1'b0;
use_prev1 <= alg_I==3'd1;
end
4'b0010: begin // S2
use_prevprev1 <= 1'b0;
use_prev2 <= 1'b0;
use_internal_x<= 1'b0;
use_prev1 <= (alg_I==3'd0 ||
alg_I==3'd3 || alg_I==3'd4 ||
alg_I==3'd5 || alg_I==3'd6 );
use_internal_y<= 1'b0;
end
4'b0001: begin // S4
use_prevprev1 <= 1'b0;
use_prev2 <= ( alg_I==3'd3 );
use_internal_x <= alg_I==3'd2;
use_prev1 <= (alg_I==3'd2 || alg_I==3'd5);
use_internal_y <= ( alg_I<=3'd4 && alg_I!=3'd2);
end
default:begin
use_prevprev1 <= 1'bx;
use_prev2 <= 1'bx;
use_internal_x<= 1'bx;
use_prev1 <= 1'bx;
use_internal_y<= 1'bx;
end
endcase
end
*/
endmodule