How to use easics' CRC generator?

[flat]

Please could someone help me with the code genreated from
http://www.easics.be/webtools/crctool

I viewed the topics about CRC in this forum.But I still still can't run a
simple test correctly.I want a 8-bits input. The simple case is just a
single string "a"(8'h61).
I think there must be something wrong with the testbench.


Below is my code.
//testbench
module testcrc;
reg [7:0] F;
reg [31:0] C;
wire [31:0] crc_out;
reg [31:0] crc_temp;
CRC32_F8 u1(.F(F),.C(C),.crc_out(crc_out));
initial
begin
F=8'h61;
C=32'hFFFFFFFF;
#10
crc_temp = crc_out ^ 32'hFFFFFFFF;
end
initial begin
$monitor($time," %x,%x,%x,%x",F,C,crc_out,crc_temp);
end
endmodule


//crc.v from easics'generator
module CRC32_D8(D,C,NewCRC);
input [7:0] D;
input [31:0] C;
output [31:0] NewCRC;
reg [31:0] NewCRC;

always@(D or C)
begin
NewCRC[0] = D[6] ^ D[0] ^ C[24] ^ C[30];
NewCRC[1] = D[7] ^ D[6] ^ D[1] ^ D[0] ^ C[24] ^ C[25] ^ C[30] ^
C[31];
NewCRC[2] = D[7] ^ D[6] ^ D[2] ^ D[1] ^ D[0] ^ C[24] ^ C[25] ^
C[26] ^ C[30] ^ C[31];
NewCRC[3] = D[7] ^ D[3] ^ D[2] ^ D[1] ^ C[25] ^ C[26] ^ C[27] ^
C[31];
NewCRC[4] = D[6] ^ D[4] ^ D[3] ^ D[2] ^ D[0] ^ C[24] ^ C[26] ^
C[27] ^ C[28] ^ C[30];
NewCRC[5] = D[7] ^ D[6] ^ D[5] ^ D[4] ^ D[3] ^ D[1] ^ D[0] ^ C[24] ^
C[25] ^ C[27] ^ C[28] ^ C[29] ^ C[30] ^ C[31];
NewCRC[6] = D[7] ^ D[6] ^ D[5] ^ D[4] ^ D[2] ^ D[1] ^ C[25] ^ C[26] ^

C[28] ^ C[29] ^ C[30] ^ C[31];
NewCRC[7] = D[7] ^ D[5] ^ D[3] ^ D[2] ^ D[0] ^ C[24] ^ C[26] ^
C[27] ^ C[29] ^ C[31];
NewCRC[8] = D[4] ^ D[3] ^ D[1] ^ D[0] ^ C[0] ^ C[24] ^ C[25] ^
C[27] ^ C[28];
NewCRC[9] = D[5] ^ D[4] ^ D[2] ^ D[1] ^ C[1] ^ C[25] ^ C[26] ^
C[28] ^ C[29];
NewCRC[10] = D[5] ^ D[3] ^ D[2] ^ D[0] ^ C[2] ^ C[24] ^ C[26] ^
C[27] ^ C[29];
NewCRC[11] = D[4] ^ D[3] ^ D[1] ^ D[0] ^ C[3] ^ C[24] ^ C[25] ^
C[27] ^ C[28];
NewCRC[12] = D[6] ^ D[5] ^ D[4] ^ D[2] ^ D[1] ^ D[0] ^ C[4] ^ C[24] ^

C[25] ^ C[26] ^ C[28] ^ C[29] ^ C[30];
NewCRC[13] = D[7] ^ D[6] ^ D[5] ^ D[3] ^ D[2] ^ D[1] ^ C[5] ^ C[25] ^

C[26] ^ C[27] ^ C[29] ^ C[30] ^ C[31];
NewCRC[14] = D[7] ^ D[6] ^ D[4] ^ D[3] ^ D[2] ^ C[6] ^ C[26] ^ C[27] ^

C[28] ^ C[30] ^ C[31];
NewCRC[15] = D[7] ^ D[5] ^ D[4] ^ D[3] ^ C[7] ^ C[27] ^ C[28] ^
C[29] ^ C[31];
NewCRC[16] = D[5] ^ D[4] ^ D[0] ^ C[8] ^ C[24] ^ C[28] ^ C[29];
NewCRC[17] = D[6] ^ D[5] ^ D[1] ^ C[9] ^ C[25] ^ C[29] ^ C[30];
NewCRC[18] = D[7] ^ D[6] ^ D[2] ^ C[10] ^ C[26] ^ C[30] ^ C[31];
NewCRC[19] = D[7] ^ D[3] ^ C[11] ^ C[27] ^ C[31];
NewCRC[20] = D[4] ^ C[12] ^ C[28];
NewCRC[21] = D[5] ^ C[13] ^ C[29];
NewCRC[22] = D[0] ^ C[14] ^ C[24];
NewCRC[23] = D[6] ^ D[1] ^ D[0] ^ C[15] ^ C[24] ^ C[25] ^ C[30];
NewCRC[24] = D[7] ^ D[2] ^ D[1] ^ C[16] ^ C[25] ^ C[26] ^ C[31];
NewCRC[25] = D[3] ^ D[2] ^ C[17] ^ C[26] ^ C[27];
NewCRC[26] = D[6] ^ D[4] ^ D[3] ^ D[0] ^ C[18] ^ C[24] ^ C[27] ^
C[28] ^ C[30];
NewCRC[27] = D[7] ^ D[5] ^ D[4] ^ D[1] ^ C[19] ^ C[25] ^ C[28] ^
C[29] ^ C[31];
NewCRC[28] = D[6] ^ D[5] ^ D[2] ^ C[20] ^ C[26] ^ C[29] ^ C[30];
NewCRC[29] = D[7] ^ D[6] ^ D[3] ^ C[21] ^ C[27] ^ C[30] ^ C[31];
NewCRC[30] = D[7] ^ D[4] ^ C[22] ^ C[28] ^ C[31];
NewCRC[31] = D[5] ^ C[23] ^ C[29];

end
endmodule


Thank you for any help ><
Flat