📄 testbench.v
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`include "params.v"
module VD();
reg CLOCK;
initial CLOCK = 0;
always #(`HALF/2) CLOCK = ~CLOCK;
reg Reset;
reg DRESET;
initial begin
DRESET = 1;
Reset = 1;
#200 Reset = 0;DRESET=0;
#300 Reset = 1;
DRESET = 1;
end
reg X;
wire [`WD_CODE-1:0] Code;
initial X = 0;
initial begin
#475 X = 1;
#`DPERIOD X = 1;
#`DPERIOD X = 1;
#`DPERIOD X = 1;
#`DPERIOD X = 1;
#`DPERIOD X = 0;
#`DPERIOD X = 0;
#`DPERIOD X = 0;
#`DPERIOD X = 1;
#`DPERIOD X = 0;
#`DPERIOD X = 1;
#`DPERIOD X = 0;
#`DPERIOD X = 1;
#`DPERIOD X = 1;
#`DPERIOD X = 0;
#`DPERIOD X = 0;
#`DPERIOD X = 0;
#`DPERIOD X = 1;
#`DPERIOD X = 1;
#`DPERIOD X = 1;
#`DPERIOD X = 0;
#`DPERIOD X = 1;
#`DPERIOD X = 0;
#`DPERIOD X = 1;
#`DPERIOD X = 0;
#`DPERIOD X = 0;
#`DPERIOD X = 0;
#`DPERIOD X = 1;
#`DPERIOD X = 0;
#`DPERIOD X = 0;
#`DPERIOD X = 0;
#`DPERIOD X = 1;
#`DPERIOD X = 1;
#`DPERIOD X = 1;
#`DPERIOD X = 1;
#`DPERIOD X = 1;
#`DPERIOD X = 0;
#`DPERIOD X = 1;
#`DPERIOD X = 1;
#`DPERIOD X = 0;
#`DPERIOD X = 0;
#`DPERIOD X = 0;
#`DPERIOD X = 1;
#`DPERIOD X = 0;
#`DPERIOD X = 0;
#`DPERIOD X = 0;
#`DPERIOD X = 1;
#`DPERIOD X = 0;
#`DPERIOD X = 0;
#`DPERIOD X = 0;
#`DPERIOD X = 1;
#`DPERIOD X = 1;
#`DPERIOD X = 0;
#`DPERIOD X = 1;
#`DPERIOD X = 1;
#`DPERIOD X = 0;
#`DPERIOD X = 0;
#`DPERIOD X = 1;
#`DPERIOD X = 1;
#`DPERIOD X = 1;
#`DPERIOD X = 0;
#`DPERIOD X = 1;
#`DPERIOD X = 0;
end
reg D_CLOCK;
initial D_CLOCK = 0;
always #(`DPERIOD/2) D_CLOCK <= ~D_CLOCK;
viterbi_encode9 enc(X,Code,D_CLOCK,DRESET);
reg Active;
always @(Code or Reset)
if (~Reset) Active <= 0;
else if (Code!=0) Active <= 1;
wire DecodeOut;
VITERBIDECODER vd (Reset, CLOCK, Active, Code, DecodeOut);
endmodule
module VD_err();
reg CLOCK;
initial CLOCK = 0;
always #(`HALF/2) CLOCK = ~CLOCK;
reg Reset;
initial begin
Reset = 1;
#200 Reset = 0;
#300 Reset = 1;
end
reg [`WD_CODE-1:0] CorrectCode;
initial CorrectCode = 2'b00;
initial begin
#475 CorrectCode = 2'b11;
#`DPERIOD CorrectCode = 2'b10;
#`DPERIOD CorrectCode = 2'b11;
#`DPERIOD CorrectCode = 2'b00;
#`DPERIOD CorrectCode = 2'b10;
//2
#`DPERIOD CorrectCode = 2'b11;
#`DPERIOD CorrectCode = 2'b01;
#`DPERIOD CorrectCode = 2'b01;
#`DPERIOD CorrectCode = 2'b10;
#`DPERIOD CorrectCode = 2'b01;
//3
#`DPERIOD CorrectCode = 2'b10;
#`DPERIOD CorrectCode = 2'b10;
#`DPERIOD CorrectCode = 2'b00;
#`DPERIOD CorrectCode = 2'b10;
#`DPERIOD CorrectCode = 2'b10;
//4
#`DPERIOD CorrectCode = 2'b00;
#`DPERIOD CorrectCode = 2'b00;
#`DPERIOD CorrectCode = 2'b01;
#`DPERIOD CorrectCode = 2'b00;
#`DPERIOD CorrectCode = 2'b01;
//5
#`DPERIOD CorrectCode = 2'b01;
#`DPERIOD CorrectCode = 2'b11;
#`DPERIOD CorrectCode = 2'b00;
#`DPERIOD CorrectCode = 2'b00;
#`DPERIOD CorrectCode = 2'b10;
//6
#`DPERIOD CorrectCode = 2'b11;
#`DPERIOD CorrectCode = 2'b01;
#`DPERIOD CorrectCode = 2'b01;
#`DPERIOD CorrectCode = 2'b10;
#`DPERIOD CorrectCode = 2'b01;
//7
#`DPERIOD CorrectCode = 2'b10;
#`DPERIOD CorrectCode = 2'b10;
#`DPERIOD CorrectCode = 2'b00;
#`DPERIOD CorrectCode = 2'b10;
#`DPERIOD CorrectCode = 2'b10;
//8
#`DPERIOD CorrectCode = 2'b00;
#`DPERIOD CorrectCode = 2'b00;
#`DPERIOD CorrectCode = 2'b01;
#`DPERIOD CorrectCode = 2'b00;
#`DPERIOD CorrectCode = 2'b01;
//9
#`DPERIOD CorrectCode = 2'b01;
#`DPERIOD CorrectCode = 2'b11;
#`DPERIOD CorrectCode = 2'b00;
#`DPERIOD CorrectCode = 2'b00;
#`DPERIOD CorrectCode = 2'b10;
//10
#`DPERIOD CorrectCode = 2'b11;
#`DPERIOD CorrectCode = 2'b01;
#`DPERIOD CorrectCode = 2'b01;
#`DPERIOD CorrectCode = 2'b10;
#`DPERIOD CorrectCode = 2'b01;
//11
#`DPERIOD CorrectCode = 2'b01;
#`DPERIOD CorrectCode = 2'b11;
#`DPERIOD CorrectCode = 2'b01;
#`DPERIOD CorrectCode = 2'b01;
#`DPERIOD CorrectCode = 2'b00;
//12
#`DPERIOD CorrectCode = 2'b10;
#`DPERIOD CorrectCode = 2'b11;
#`DPERIOD CorrectCode = 2'b00;
end
reg [`WD_CODE-1:0] Code;
initial Code = 2'b00;
initial begin
#475 Code = 2'b11; //2'b11
#`DPERIOD Code = 2'b10; //2'b10
#`DPERIOD Code = 2'b11; //2'b11
#`DPERIOD Code = 2'b10; //2'b00 *
#`DPERIOD Code = 2'b10; //2'b10
//2
#`DPERIOD Code = 2'b11; //2'b11
#`DPERIOD Code = 2'b00; //2'b01 *
#`DPERIOD Code = 2'b01; //2'b01
#`DPERIOD Code = 2'b10; //2'b10
#`DPERIOD Code = 2'b11; //2'b01 *
//3
#`DPERIOD Code = 2'b10; //2'b10
#`DPERIOD Code = 2'b10; //2'b10
#`DPERIOD Code = 2'b01; //2'b00 *
#`DPERIOD Code = 2'b10; //2'b10
#`DPERIOD Code = 2'b10; //2'b10
//4
#`DPERIOD Code = 2'b10; //2'b00 *
#`DPERIOD Code = 2'b00; //2'b00
#`DPERIOD Code = 2'b01; //2'b01
#`DPERIOD Code = 2'b01; //2'b00 *
#`DPERIOD Code = 2'b01; //2'b01
//5
#`DPERIOD Code = 2'b01; //2'b01
#`DPERIOD Code = 2'b01; //2'b11 *
#`DPERIOD Code = 2'b00; //2'b00
#`DPERIOD Code = 2'b00; //2'b00
#`DPERIOD Code = 2'b11; //2'b10 *
//6
#`DPERIOD Code = 2'b11; //2'b11
#`DPERIOD Code = 2'b01; //2'b01
#`DPERIOD Code = 2'b11; //2'b01 *
#`DPERIOD Code = 2'b10; //2'b10
#`DPERIOD Code = 2'b01; //2'b01
//7
#`DPERIOD Code = 2'b11; //2'b10 *
#`DPERIOD Code = 2'b10; //2'b10
#`DPERIOD Code = 2'b00; //2'b00
#`DPERIOD Code = 2'b11; //2'b10 *
#`DPERIOD Code = 2'b10; //2'b10
//8
#`DPERIOD Code = 2'b00; //2'b00
#`DPERIOD Code = 2'b00; //2'b00
#`DPERIOD Code = 2'b11; //2'b01 *
#`DPERIOD Code = 2'b00; //2'b00
#`DPERIOD Code = 2'b01; //2'b01
//9
#`DPERIOD Code = 2'b01; //2'b01
#`DPERIOD Code = 2'b11; //2'b11
#`DPERIOD Code = 2'b10; //2'b00 *
#`DPERIOD Code = 2'b00; //2'b00
#`DPERIOD Code = 2'b10; //2'b10
//10
#`DPERIOD Code = 2'b10; //2'b11 *
#`DPERIOD Code = 2'b01; //2'b01
#`DPERIOD Code = 2'b01; //2'b01
#`DPERIOD Code = 2'b00; //2'b10 *
#`DPERIOD Code = 2'b01; //2'b01
//11
#`DPERIOD Code = 2'b01; //2'b01
#`DPERIOD Code = 2'b11; //2'b11
#`DPERIOD Code = 2'b11; //2'b01 *
#`DPERIOD Code = 2'b01; //2'b01
#`DPERIOD Code = 2'b00; //2'b00
//12
#`DPERIOD Code = 2'b10; //2'b10
#`DPERIOD Code = 2'b11; //2'b11
#`DPERIOD Code = 2'b00; //2'b00
end
reg Active;
always @(Code or Reset)
if (~Reset) Active <= 0;
else if (Code!=0) Active <= 1;
reg D_CLOCK;
initial D_CLOCK = 0;
always #(`DPERIOD/2) D_CLOCK <= ~D_CLOCK;
wire DecodeOut;
VITERBIDECODER vd (Reset, CLOCK, Active, Code, DecodeOut);
endmodule⌨️ 快捷键说明
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