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64点FFT TESTBENCH.v
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// TESTBENCH
// test serial 64 bit FFT
module TESTBENCH();
begin
reg signed [7:0] InputData [63:0][1:0];
reg signed [19:0] CalData [63:0][1:0];
reg signed [19:0] TempDataR;
reg signed [19:0] TempDataI;
reg signed [7:0] ParamData [62:0][1:0];
/*
assign W02_00R = ParamData[ 0][0]; assign W02_00I = ParamData[ 0][1];
assign W04_00R = ParamData[ 1][0]; assign W04_00I = ParamData[ 1][1];
assign W04_01R = ParamData[ 2][0]; assign W04_01I = ParamData[ 2][1];
assign W08_00R = ParamData[ 3][0]; assign W08_00I = ParamData[ 3][1];
assign W08_00R = ParamData[ 4][0]; assign W08_01I = ParamData[ 4][1];
assign W08_00R = ParamData[ 5][0]; assign W08_02I = ParamData[ 5][1];
assign W08_00R = ParamData[ 6][0]; assign W08_03I = ParamData[ 6][1];
assign W16_00R = ParamData[ 7][0]; assign W16_00I = ParamData[ 7][1];
assign W16_01R = ParamData[ 8][0]; assign W16_01I = ParamData[ 8][1];
assign W16_02R = ParamData[ 9][0]; assign W16_02I = ParamData[ 9][1];
assign W16_03R = ParamData[10][0]; assign W16_03I = ParamData[10][1];
assign W16_04R = ParamData[11][0]; assign W16_04I = ParamData[11][1];
assign W16_05R = ParamData[12][0]; assign W16_05I = ParamData[12][1];
assign W16_06R = ParamData[13][0]; assign W16_06I = ParamData[13][1];
assign W16_07R = ParamData[14][0]; assign W16_07I = ParamData[14][1];
assign W32_00R = ParamData[15][0]; assign W32_00I = ParamData[15][1];
assign W32_01R = ParamData[16][0]; assign W32_01I = ParamData[16][1];
assign W32_02R = ParamData[17][0]; assign W32_02I = ParamData[17][1];
assign W32_03R = ParamData[18][0]; assign W32_03I = ParamData[18][1];
assign W32_04R = ParamData[19][0]; assign W32_04I = ParamData[19][1];
assign W32_05R = ParamData[20][0]; assign W32_05I = ParamData[20][1];
assign W32_06R = ParamData[21][0]; assign W32_06I = ParamData[21][1];
assign W32_07R = ParamData[22][0]; assign W32_07I = ParamData[22][1];
assign W32_08R = ParamData[23][0]; assign W32_08I = ParamData[23][1];
assign W32_09R = ParamData[24][0]; assign W32_09I = ParamData[24][1];
assign W32_10R = ParamData[25][0]; assign W32_10I = ParamData[25][1];
assign W32_11R = ParamData[26][0]; assign W32_11I = ParamData[26][1];
assign W32_12R = ParamData[27][0]; assign W32_12I = ParamData[27][1];
assign W32_13R = ParamData[28][0]; assign W32_13I = ParamData[28][1];
assign W32_14R = ParamData[29][0]; assign W32_14I = ParamData[29][1];
assign W32_15R = ParamData[30][0]; assign W32_15I = ParamData[30][1];
assign W64_00R = ParamData[31][0]; assign W64_00I = ParamData[31][1];
assign W64_01R = ParamData[32][0]; assign W64_01I = ParamData[32][1];
assign W64_02R = ParamData[33][0]; assign W64_02I = ParamData[33][1];
assign W64_03R = ParamData[34][0]; assign W64_03I = ParamData[34][1];
assign W64_04R = ParamData[35][0]; assign W64_04I = ParamData[35][1];
assign W64_05R = ParamData[36][0]; assign W64_05I = ParamData[36][1];
assign W64_06R = ParamData[37][0]; assign W64_06I = ParamData[37][1];
assign W64_07R = ParamData[38][0]; assign W64_07I = ParamData[38][1];
assign W64_08R = ParamData[39][0]; assign W64_08I = ParamData[39][1];
assign W64_09R = ParamData[40][0]; assign W64_09I = ParamData[40][1];
assign W64_10R = ParamData[41][0]; assign W64_10I = ParamData[41][1];
assign W64_11R = ParamData[42][0]; assign W64_11I = ParamData[42][1];
assign W64_12R = ParamData[43][0]; assign W64_12I = ParamData[43][1];
assign W64_13R = ParamData[44][0]; assign W64_13I = ParamData[44][1];
assign W64_14R = ParamData[45][0]; assign W64_14I = ParamData[45][1];
assign W64_15R = ParamData[46][0]; assign W64_15I = ParamData[46][1];
assign W64_16R = ParamData[47][0]; assign W64_16I = ParamData[47][1];
assign W64_17R = ParamData[48][0]; assign W64_17I = ParamData[48][1];
assign W64_18R = ParamData[49][0]; assign W64_18I = ParamData[49][1];
assign W64_19R = ParamData[50][0]; assign W64_19I = ParamData[50][1];
assign W64_20R = ParamData[51][0]; assign W64_20I = ParamData[51][1];
assign W64_21R = ParamData[52][0]; assign W64_21I = ParamData[52][1];
assign W64_22R = ParamData[53][0]; assign W64_22I = ParamData[53][1];
assign W64_23R = ParamData[54][0]; assign W64_23I = ParamData[54][1];
assign W64_24R = ParamData[55][0]; assign W64_24I = ParamData[55][1];
assign W64_25R = ParamData[56][0]; assign W64_25I = ParamData[56][1];
assign W64_26R = ParamData[57][0]; assign W64_26I = ParamData[57][1];
assign W64_27R = ParamData[58][0]; assign W64_27I = ParamData[58][1];
assign W64_28R = ParamData[59][0]; assign W64_28I = ParamData[59][1];
assign W64_29R = ParamData[60][0]; assign W64_29I = ParamData[60][1];
assign W64_30R = ParamData[61][0]; assign W64_30I = ParamData[61][1];
assign W64_31R = ParamData[62][0]; assign W64_31I = ParamData[62][1];
*/
reg [7:0] i;
reg [5:0] j;
reg [5:0] z;
reg [7:0] base;
reg [7:0] bias;
reg [7:0] num;
reg [7:0] point;
reg [7:0] UpNum;
reg [7:0] DnNum;
reg [7:0] DnBias;
initial begin
$display("\n\n0.Load Data");
$readmemh("Data_Input.txt", InputData);
for(i = 0; i < 64; i = i + 1)
begin
$display("%d:( %d,%d j)", i, InputData[i][0], InputData[i][1]);
end
$display("\n\n1.Load Parameter");
$readmemh("Data_Parameter.txt", ParamData);
for(i = 0; i < 63; i = i + 1)
begin
$display("%d:( %d,%dj)", i, ParamData[i][0], ParamData[i][1]);
end
$display("\n\n2.ReConfig Input Data");
for(i = 0; i < 64; i = i + 1)
begin
j[5:0] = {i[0], i[1], i[2], i[3], i[4], i[5]};
CalData[i][0] = InputData[j][0];
CalData[i][1] = InputData[j][1];
$display("%d:( %d,%d j)", i, CalData[i][0], CalData[i][1]);
end
$display("\n\n3.Start FFT");
bias = 0; num = 0; point = 0;
for(z = 1; z < 7; z = z + 1) // Stage
begin
bias = bias + point/2; // Init
point = 2 ** z;
num = 64 / point;
DnBias = point / 2;
$display("\n\n3.%d stage: %d * %d points. (Wn_Bias: %d)", z, num, point, bias);
for(i = 0; i < num; i = i + 1)//Stage
begin
base = point * i;
for(j = 0; j < DnBias; j = j + 1)// Some 'Butterfly Scheme'
begin
UpNum = base + j;
DnNum = base + j + DnBias;
TempDataR = CalData[DnNum][0] * ParamData[ bias + j][0] - CalData[DnNum][1] * ParamData[ bias + j][1];
TempDataI = CalData[DnNum][1] * ParamData[ bias + j][0] + CalData[DnNum][0] * ParamData[ bias + j][1];
CalData[DnNum][0] = CalData[UpNum][0] * 128 - TempDataR;
CalData[DnNum][1] = CalData[UpNum][1] * 128 - TempDataI;
CalData[UpNum][0] = CalData[UpNum][0] * 128 + TempDataR;
CalData[UpNum][1] = CalData[UpNum][1] * 128 + TempDataI;
CalData[UpNum][0] = CalData[UpNum][0] / 128;
CalData[UpNum][1] = CalData[UpNum][1] / 128;
CalData[DnNum][0] = CalData[DnNum][0] / 128;
CalData[DnNum][1] = CalData[DnNum][1] / 128;
$display("%d,%d,%d: CalData:(%d %dj)(%d %dj) Parameter:(%d %dj)", z, i, j
, CalData[UpNum][0], CalData[UpNum][1]
, CalData[DnNum][0], CalData[DnNum][1]
, ParamData[ bias + j][0], ParamData[ bias + j][1]);
end
end
end// z
$display("4.Finish record FFT result");
for(i = 0; i < 64; i = i + 1)
begin
$display("%d:( %d %d j)", i, CalData[i][0], CalData[i][1]);
end
end
end
endmodule
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