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basic_verilog/Advanced Synthesis Cookbook/crc/crc32_dat40.v
Konstantin Pavlov (pt) 40533743d7 Added altera cookbook
2015-12-15 22:44:58 +03:00

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// Copyright 2007 Altera Corporation. All rights reserved.
// Altera products are protected under numerous U.S. and foreign patents,
// maskwork rights, copyrights and other intellectual property laws.
//
// This reference design file, and your use thereof, is subject to and governed
// by the terms and conditions of the applicable Altera Reference Design
// License Agreement (either as signed by you or found at www.altera.com). By
// using this reference design file, you indicate your acceptance of such terms
// and conditions between you and Altera Corporation. In the event that you do
// not agree with such terms and conditions, you may not use the reference
// design file and please promptly destroy any copies you have made.
//
// This reference design file is being provided on an "as-is" basis and as an
// accommodation and therefore all warranties, representations or guarantees of
// any kind (whether express, implied or statutory) including, without
// limitation, warranties of merchantability, non-infringement, or fitness for
// a particular purpose, are specifically disclaimed. By making this reference
// design file available, Altera expressly does not recommend, suggest or
// require that this reference design file be used in combination with any
// other product not provided by Altera.
/////////////////////////////////////////////////////////////////////////////
//// CRC-32 of 40 data bits. MSB used first.
// Polynomial 04c11db7 (MSB excluded)
// x^26 + x^23 + x^22 + x^16 + x^12 + x^11 + x^10 + x^8 + x^7 + x^5 + x^4 + x^2 + x^1 + x^0
//
// Optimal LUT depth 3
//
// CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD
// 00000000001111111111222222222233 0000000000111111111122222222223333333333
// 01234567890123456789012345678901 0123456789012345678901234567890123456789
//
// C00 = .XX.X...X.......XXX.XXXXX.X..X.. X.....X..XX.X...X.......XXX.XXXXX.X..X..
// C01 = .X.XXX..XX......X..XX....XXX.XX. XX....XX.X.XXX..XX......X..XX....XXX.XX.
// C02 = XX...XX.XXX.....X.X...XXX..XXXXX XXX...XXXX...XX.XXX.....X.X...XXX..XXXXX
// C03 = XXX...XX.XXX.....X.X...XXX..XXXX .XXX...XXXX...XX.XXX.....X.X...XXX..XXXX
// C04 = X..XX..X..XXX...XX...XXX.X....XX X.XXX.X.X..XX..X..XXX...XX...XXX.X....XX
// C05 = ..X..X.....XXX..X...XX.......X.X XX.XXXXX..X..X.....XXX..X...XX.......X.X
// C06 = X..X..X.....XXX..X...XX.......X. .XX.XXXXX..X..X.....XXX..X...XX.......X.
// C07 = X.X....XX....XXXXX..XX..X.X..X.X X.XX.X.XX.X....XX....XXXXX..XX..X.X..X.X
// C08 = X.XXX....X....XX....X..XXXXX.XX. XX.XX...X.XXX....X....XX....X..XXXXX.XX.
// C09 = .X.XXX....X....XX....X..XXXXX.XX .XX.XX...X.XXX....X....XX....X..XXXXX.XX
// C10 = .X...XX.X..X......X.XX.XXX.XX..X X.XX.X...X...XX.X..X......X.XX.XXX.XX..X
// C11 = .X..X.XXXX..X...XXXXX..X.X..X... XX.XX....X..X.XXXX..X...XXXXX..X.X..X...
// C12 = .X..XX.X.XX..X..X..X..XX........ XXX.XXX..X..XX.X.XX..X..X..X..XX........
// C13 = ..X..XX.X.XX..X..X..X..XX....... .XXX.XXX..X..XX.X.XX..X..X..X..XX.......
// C14 = X..X..XX.X.XX..X..X..X..XX...... ..XXX.XXX..X..XX.X.XX..X..X..X..XX......
// C15 = XX..X..XX.X.XX..X..X..X..XX..... ...XXX.XXX..X..XX.X.XX..X..X..X..XX.....
// C16 = X...XX...X.X.XX.X.X..XX.X..X.X.. X...XX..X...XX...X.X.XX.X.X..XX.X..X.X..
// C17 = .X...XX...X.X.XX.X.X..XX.X..X.X. .X...XX..X...XX...X.X.XX.X.X..XX.X..X.X.
// C18 = ..X...XX...X.X.XX.X.X..XX.X..X.X ..X...XX..X...XX...X.X.XX.X.X..XX.X..X.X
// C19 = X..X...XX...X.X.XX.X.X..XX.X..X. ...X...XX..X...XX...X.X.XX.X.X..XX.X..X.
// C20 = XX..X...XX...X.X.XX.X.X..XX.X..X ....X...XX..X...XX...X.X.XX.X.X..XX.X..X
// C21 = .XX..X...XX...X.X.XX.X.X..XX.X.. .....X...XX..X...XX...X.X.XX.X.X..XX.X..
// C22 = .X.XX.X.X.XX...XX.XX.X.X..XXXXX. X........X.XX.X.X.XX...XX.XX.X.X..XXXXX.
// C23 = .X...X.XXX.XX.....XX.X.X..XXX.XX XX....X..X...X.XXX.XX.....XX.X.X..XXX.XX
// C24 = ..X...X.XXX.XX.....XX.X.X..XXX.X .XX....X..X...X.XXX.XX.....XX.X.X..XXX.X
// C25 = X..X...X.XXX.XX.....XX.X.X..XXX. ..XX....X..X...X.XXX.XX.....XX.X.X..XXX.
// C26 = ..X.......XXX.XXXXX.X..X......XX X..XX.X...X.......XXX.XXXXX.X..X......XX
// C27 = ...X.......XXX.XXXXX.X..X......X .X..XX.X...X.......XXX.XXXXX.X..X......X
// C28 = X...X.......XXX.XXXXX.X..X...... ..X..XX.X...X.......XXX.XXXXX.X..X......
// C29 = .X...X.......XXX.XXXXX.X..X..... ...X..XX.X...X.......XXX.XXXXX.X..X.....
// C30 = X.X...X.......XXX.XXXXX.X..X.... ....X..XX.X...X.......XXX.XXXXX.X..X....
// C31 = XX.X...X.......XXX.XXXXX.X..X... .....X..XX.X...X.......XXX.XXXXX.X..X...
//
module crc32_dat40 (crc_in,dat_in,crc_out);
input [31:0] crc_in;
input [39:0] dat_in;
output [31:0] crc_out;
wire [31:0] crc_out;
parameter METHOD = 1;
generate
if (METHOD == 0)
crc32_dat40_flat cc (.crc_in(crc_in),.dat_in(dat_in),.crc_out(crc_out));
else
crc32_dat40_factor cc (.crc_in(crc_in),.dat_in(dat_in),.crc_out(crc_out));
endgenerate
endmodule
////////////////////////////////////////////////////////////////
// Flat version
////////////////////////////////////////////////////////////////
module crc32_dat40_flat (crc_in,dat_in,crc_out);
input [31:0] crc_in;
input [39:0] dat_in;
output [31:0] crc_out;
wire [31:0] crc_out;
wire x7, x6, x5, x4, x3, x2, x1,
x0, x31, x30, x29, x28, x27, x26, x25,
x24, x23, x22, x21, x20, x19, x18, x17,
x16, x15, x14, x13, x12, x11, x10, x9,
x8;
assign crc_out = {x31,x30,x29,x28,x27,x26,x25,x24,x23,x22,x21,x20,x19,x18,x17,
x16,x15,x14,x13,x12,x11,x10,x9,x8,x7,x6,x5,x4,x3,x2,x1,
x0};
wire d0,d1,d2,d3,d4,d5,d6,d7,d8,d9,d10,d11,d12,d13,d14,
d15,d16,d17,d18,d19,d20,d21,d22,d23,d24,d25,d26,d27,d28,d29,d30,
d31,d32,d33,d34,d35,d36,d37,d38,d39;
assign { d39,d38,d37,d36,d35,d34,d33,d32,d31,d30,d29,d28,d27,d26,d25,
d24,d23,d22,d21,d20,d19,d18,d17,d16,d15,d14,d13,d12,d11,d10,d9,
d8,d7,d6,d5,d4,d3,d2,d1,d0} = dat_in [39:0];
wire c0,c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,
c15,c16,c17,c18,c19,c20,c21,c22,c23,c24,c25,c26,c27,c28,c29,c30,
c31;
assign { c31,c30,c29,c28,c27,c26,c25,c24,c23,c22,c21,c20,c19,c18,c17,
c16,c15,c14,c13,c12,c11,c10,c9,c8,c7,c6,c5,c4,c3,c2,c1,
c0} = crc_in [31:0];
assign x7 = c16 ^ d34 ^ d37 ^ d10 ^ c26 ^ d29 ^ c17 ^ d21 ^ d15 ^
d32 ^ c14 ^ c8 ^ c31 ^ d16 ^ d5 ^ c7 ^ d0 ^ d3 ^ d39 ^
d8 ^ c15 ^ d28 ^ d2 ^ c20 ^ c0 ^ d22 ^ d23 ^ c13 ^ c29 ^
d25 ^ c2 ^ c21 ^ d24 ^ c24 ^ d7; // 35 ins 1 outs
assign x6 = d7 ^ c0 ^ d2 ^ c3 ^ d29 ^ c22 ^ d38 ^ d5 ^ d30 ^
d20 ^ c30 ^ c6 ^ d1 ^ d25 ^ c21 ^ c17 ^ d14 ^ c13 ^ d4 ^
d8 ^ d22 ^ d11 ^ c12 ^ d21 ^ c14 ^ d6; // 26 ins 1 outs
assign x5 = d28 ^ c29 ^ c2 ^ c16 ^ d13 ^ c21 ^ d24 ^ d4 ^ d29 ^
d19 ^ d10 ^ d37 ^ c13 ^ c20 ^ d7 ^ d6 ^ d1 ^ c12 ^ c31 ^
d20 ^ d0 ^ d39 ^ d21 ^ c5 ^ c11 ^ d3 ^ d5; // 27 ins 1 outs
assign x4 = d25 ^ c3 ^ c17 ^ c21 ^ d11 ^ d33 ^ d18 ^ d39 ^ d24 ^
d29 ^ d6 ^ d3 ^ c16 ^ c31 ^ c23 ^ c12 ^ d38 ^ d8 ^ d12 ^
c10 ^ d30 ^ d0 ^ c4 ^ c22 ^ c11 ^ d20 ^ c30 ^ d31 ^ d15 ^
d19 ^ c25 ^ d2 ^ c7 ^ c0 ^ d4; // 35 ins 1 outs
assign x3 = d31 ^ c24 ^ c17 ^ c25 ^ d10 ^ d1 ^ d18 ^ c0 ^ d2 ^
d33 ^ c19 ^ c6 ^ d36 ^ d14 ^ d27 ^ d8 ^ d19 ^ d15 ^ c29 ^
c28 ^ c10 ^ d25 ^ d32 ^ d37 ^ d39 ^ c30 ^ d17 ^ c2 ^ c11 ^
c23 ^ c9 ^ d38 ^ c31 ^ d9 ^ c7 ^ d7 ^ c1 ^ d3; // 38 ins 1 outs
assign x2 = d31 ^ d13 ^ d38 ^ c8 ^ c27 ^ d35 ^ c5 ^ d1 ^ c31 ^
d14 ^ c1 ^ c30 ^ d7 ^ c22 ^ c9 ^ d37 ^ c10 ^ c16 ^ c28 ^
d8 ^ c6 ^ d17 ^ d0 ^ d36 ^ c18 ^ d24 ^ d32 ^ d26 ^ c24 ^
d16 ^ d30 ^ c29 ^ d6 ^ d9 ^ d18 ^ d39 ^ c23 ^ c0 ^ d2; // 39 ins 1 outs
assign x1 = c20 ^ d28 ^ c4 ^ d0 ^ d37 ^ d24 ^ c25 ^ d12 ^ d6 ^
d9 ^ d7 ^ c29 ^ c1 ^ c19 ^ d33 ^ c3 ^ c26 ^ d13 ^ d38 ^
c9 ^ c8 ^ d34 ^ d17 ^ d11 ^ c30 ^ d16 ^ d27 ^ c16 ^ c27 ^
d35 ^ c5 ^ d1; // 32 ins 1 outs
assign x0 = d31 ^ d30 ^ d12 ^ c23 ^ c16 ^ d34 ^ c8 ^ d29 ^ d9 ^
d6 ^ d37 ^ d10 ^ c24 ^ d24 ^ c21 ^ c2 ^ c17 ^ c1 ^ d25 ^
c29 ^ d32 ^ c26 ^ d26 ^ c18 ^ c20 ^ d28 ^ d16 ^ c22 ^ c4 ^
d0; // 30 ins 1 outs
assign x31 = d24 ^ d15 ^ c25 ^ c22 ^ c23 ^ d8 ^ d25 ^ c19 ^ d30 ^
d27 ^ c17 ^ c16 ^ d33 ^ d29 ^ c21 ^ d28 ^ d31 ^ c15 ^ d11 ^
c0 ^ c20 ^ c7 ^ d23 ^ d9 ^ c1 ^ d5 ^ c3 ^ d36 ^ c28; // 29 ins 1 outs
assign x30 = d29 ^ c15 ^ d32 ^ d7 ^ c0 ^ c21 ^ d10 ^ c22 ^ d24 ^
d4 ^ d30 ^ c2 ^ d35 ^ d8 ^ d14 ^ c16 ^ d26 ^ c14 ^ c18 ^
c27 ^ d27 ^ d28 ^ c6 ^ c19 ^ c24 ^ c20 ^ d22 ^ d23; // 28 ins 1 outs
assign x29 = d9 ^ d28 ^ d29 ^ c20 ^ d23 ^ c15 ^ d13 ^ d3 ^ c1 ^
d22 ^ d34 ^ c23 ^ c5 ^ c26 ^ d6 ^ d25 ^ c13 ^ c18 ^ c17 ^
d26 ^ d27 ^ d31 ^ c14 ^ d7 ^ c21 ^ c19 ^ d21; // 27 ins 1 outs
assign x28 = d33 ^ c25 ^ d12 ^ d2 ^ c16 ^ d26 ^ d21 ^ c13 ^ c18 ^
d25 ^ c17 ^ d28 ^ d5 ^ c20 ^ d27 ^ c12 ^ d24 ^ d8 ^ d22 ^
c4 ^ d30 ^ c22 ^ c19 ^ d6 ^ d20 ^ c14 ^ c0; // 27 ins 1 outs
assign x27 = d29 ^ d26 ^ d11 ^ d4 ^ c18 ^ c17 ^ c31 ^ c16 ^ d24 ^
c24 ^ c3 ^ c15 ^ d23 ^ c11 ^ d5 ^ c12 ^ c19 ^ d21 ^ d20 ^
d25 ^ d32 ^ d19 ^ d7 ^ d39 ^ c13 ^ d27 ^ c21 ^ d1; // 28 ins 1 outs
assign x26 = d31 ^ d6 ^ c11 ^ d24 ^ c17 ^ d28 ^ d0 ^ d22 ^ d3 ^
c20 ^ c15 ^ d25 ^ c18 ^ c16 ^ c14 ^ c10 ^ c23 ^ d26 ^ c2 ^
c30 ^ d39 ^ d38 ^ d10 ^ d4 ^ d18 ^ d19 ^ d20 ^ c31 ^ c12 ^
d23; // 30 ins 1 outs
assign x25 = d31 ^ d36 ^ c20 ^ c23 ^ d11 ^ c0 ^ d19 ^ d15 ^ c25 ^
d37 ^ c30 ^ c10 ^ c14 ^ c13 ^ d8 ^ c28 ^ c7 ^ d2 ^ d18 ^
d22 ^ d17 ^ d29 ^ c9 ^ c3 ^ d38 ^ c29 ^ d21 ^ d28 ^ d3 ^
d33 ^ c21 ^ c11; // 32 ins 1 outs
assign x24 = c22 ^ c9 ^ d30 ^ d36 ^ c20 ^ c24 ^ d37 ^ d17 ^ c19 ^
d35 ^ d20 ^ d16 ^ d14 ^ c29 ^ d32 ^ c31 ^ c8 ^ c12 ^ d21 ^
d7 ^ d28 ^ c10 ^ d39 ^ d10 ^ d1 ^ d18 ^ c6 ^ c27 ^ d27 ^
d2 ^ c13 ^ c2 ^ c28; // 33 ins 1 outs
assign x23 = c1 ^ d13 ^ d38 ^ c21 ^ c30 ^ d6 ^ d36 ^ c12 ^ d17 ^
d16 ^ d19 ^ d31 ^ c28 ^ d15 ^ d27 ^ d1 ^ d9 ^ c31 ^ d29 ^
c19 ^ c11 ^ d0 ^ d20 ^ c9 ^ c8 ^ d34 ^ c5 ^ c7 ^ c18 ^
c23 ^ d35 ^ c27 ^ d26 ^ c26 ^ d39; // 35 ins 1 outs
assign x22 = d12 ^ c29 ^ d38 ^ c11 ^ d37 ^ c3 ^ c10 ^ d35 ^ d31 ^
c18 ^ d14 ^ d0 ^ d26 ^ c6 ^ d27 ^ c21 ^ c30 ^ c4 ^ d16 ^
d19 ^ d24 ^ d9 ^ d36 ^ c27 ^ c1 ^ c26 ^ d29 ^ d11 ^ c28 ^
d23 ^ c19 ^ d18 ^ c8 ^ d34 ^ c16 ^ c15 ^ c23; // 37 ins 1 outs
assign x21 = c10 ^ d34 ^ d9 ^ c2 ^ c21 ^ d29 ^ d17 ^ c23 ^ c19 ^
d13 ^ c5 ^ d27 ^ d18 ^ c18 ^ c16 ^ d31 ^ c29 ^ d26 ^ c26 ^
c1 ^ d5 ^ c9 ^ c27 ^ d10 ^ d35 ^ d37 ^ c14 ^ d22 ^ d24; // 29 ins 1 outs
assign x20 = d34 ^ d17 ^ c22 ^ d39 ^ c31 ^ c20 ^ d8 ^ c1 ^ c28 ^
d28 ^ c17 ^ d12 ^ c4 ^ c9 ^ d30 ^ d33 ^ c25 ^ c8 ^ c13 ^
d23 ^ d36 ^ c18 ^ c0 ^ d25 ^ d4 ^ c15 ^ d26 ^ d9 ^ c26 ^
d21 ^ d16; // 31 ins 1 outs
assign x19 = d16 ^ c19 ^ d38 ^ c30 ^ d15 ^ d7 ^ c0 ^ c24 ^ c16 ^
c25 ^ d27 ^ d11 ^ c3 ^ c12 ^ d33 ^ d25 ^ d24 ^ c8 ^ c21 ^
d22 ^ d3 ^ c27 ^ c7 ^ d35 ^ d29 ^ d8 ^ c14 ^ c17 ^ d32 ^
d20; // 30 ins 1 outs
assign x18 = d14 ^ d15 ^ d26 ^ c29 ^ c7 ^ d10 ^ c20 ^ c15 ^ c24 ^
c2 ^ d6 ^ d34 ^ c31 ^ c23 ^ d32 ^ c13 ^ d24 ^ d2 ^ d28 ^
d21 ^ d31 ^ c11 ^ d7 ^ c18 ^ d19 ^ d39 ^ c26 ^ c6 ^ c16 ^
d23 ^ d37; // 31 ins 1 outs
assign x17 = d27 ^ c28 ^ d36 ^ d30 ^ d5 ^ c22 ^ d9 ^ d38 ^ c23 ^
c30 ^ c1 ^ c10 ^ c6 ^ d14 ^ d6 ^ c25 ^ d13 ^ d22 ^ d33 ^
d20 ^ c12 ^ d1 ^ c14 ^ c19 ^ c5 ^ d25 ^ d23 ^ c17 ^ d31 ^
c15 ^ d18; // 31 ins 1 outs
assign x16 = c27 ^ c16 ^ d13 ^ d32 ^ d8 ^ d4 ^ c18 ^ c11 ^ d26 ^
d17 ^ d22 ^ c0 ^ d29 ^ c5 ^ c14 ^ d37 ^ d21 ^ d19 ^ d0 ^
c21 ^ d12 ^ d5 ^ c29 ^ c4 ^ c9 ^ c22 ^ d24 ^ c24 ^ d35 ^
d30 ^ c13; // 31 ins 1 outs
assign x15 = d34 ^ d9 ^ c19 ^ d16 ^ d7 ^ d21 ^ c10 ^ d24 ^ d4 ^
d5 ^ d18 ^ d33 ^ c25 ^ c26 ^ d12 ^ d15 ^ d20 ^ c12 ^ c13 ^
d27 ^ c4 ^ c8 ^ c7 ^ c16 ^ d8 ^ c22 ^ d30 ^ c0 ^ d3 ^
c1; // 30 ins 1 outs
assign x14 = d32 ^ c0 ^ d2 ^ d20 ^ d4 ^ d33 ^ d26 ^ d15 ^ d3 ^
d14 ^ d23 ^ c18 ^ c7 ^ c3 ^ c9 ^ d6 ^ c15 ^ c6 ^ c24 ^
d29 ^ c12 ^ d8 ^ c21 ^ c11 ^ d19 ^ d7 ^ d17 ^ d11 ^ c25; // 29 ins 1 outs
assign x13 = d13 ^ d19 ^ c10 ^ c2 ^ d25 ^ d18 ^ d32 ^ d7 ^ c8 ^
c17 ^ d22 ^ d1 ^ d10 ^ d3 ^ d2 ^ c23 ^ c24 ^ d31 ^ d28 ^
c6 ^ c20 ^ d6 ^ c11 ^ d14 ^ c14 ^ c5 ^ d16 ^ d5; // 28 ins 1 outs
assign x12 = d24 ^ d18 ^ c16 ^ c23 ^ d12 ^ d2 ^ d6 ^ d1 ^ c1 ^
c10 ^ d13 ^ d21 ^ c19 ^ d17 ^ d0 ^ d27 ^ d15 ^ c7 ^ c5 ^
d9 ^ d30 ^ d4 ^ d31 ^ c9 ^ d5 ^ c4 ^ c22 ^ c13; // 28 ins 1 outs
assign x11 = d0 ^ c8 ^ c25 ^ d4 ^ d14 ^ d9 ^ c16 ^ d1 ^ d25 ^
c23 ^ c6 ^ d3 ^ c28 ^ d17 ^ d27 ^ d16 ^ d31 ^ d33 ^ d36 ^
c19 ^ d12 ^ c1 ^ d15 ^ d24 ^ c17 ^ c9 ^ d20 ^ c4 ^ c12 ^
c7 ^ d28 ^ c20 ^ c18 ^ d26; // 34 ins 1 outs
assign x10 = d36 ^ d5 ^ d35 ^ d39 ^ d9 ^ c24 ^ d19 ^ c6 ^ c11 ^
d31 ^ c28 ^ c1 ^ c23 ^ c25 ^ d29 ^ c21 ^ d3 ^ d32 ^ c8 ^
c27 ^ d16 ^ d13 ^ d28 ^ d14 ^ c5 ^ c31 ^ d0 ^ d33 ^ d2 ^
c20 ^ c18 ^ d26; // 32 ins 1 outs
assign x9 = d29 ^ d39 ^ c26 ^ d36 ^ d5 ^ d23 ^ c30 ^ c31 ^ d38 ^
d13 ^ d24 ^ c25 ^ c28 ^ d34 ^ c1 ^ c10 ^ c15 ^ c21 ^ d2 ^
d18 ^ d12 ^ c3 ^ d32 ^ c16 ^ d33 ^ c24 ^ c4 ^ d4 ^ d11 ^
d1 ^ c5 ^ d35 ^ c27 ^ d9; // 34 ins 1 outs
assign x8 = d28 ^ d35 ^ d34 ^ c24 ^ c26 ^ d32 ^ c25 ^ c2 ^ c23 ^
c20 ^ d1 ^ d10 ^ c0 ^ c27 ^ d22 ^ d0 ^ d4 ^ d12 ^ d31 ^
c30 ^ d11 ^ d17 ^ c4 ^ c9 ^ d38 ^ c29 ^ d23 ^ d3 ^ c15 ^
d37 ^ c3 ^ d33 ^ c14 ^ d8; // 34 ins 1 outs
endmodule
////////////////////////////////////////////////////////////////
// Depth optimal factored version
////////////////////////////////////////////////////////////////
module crc32_dat40_factor (crc_in,dat_in,crc_out);
input [31:0] crc_in;
input [39:0] dat_in;
output [31:0] crc_out;
wire [31:0] crc_out;
wire x123, x122, x121, x120, x119, x118, x117,
x116, x115, x114, x113, x112, x111, x110, x109,
x108, x107, x106, x105, x104, x103, x102, x101,
x100, x99, x98, x97, x96, x95, x94, x93,
x92, x91, x90, x89, x88, x87, x86, x85,
x84, x83, x82, x81, x80, x79, x78, x77,
x76, x75, x74, x73, x72, x71, x70, x69,
x68, x67, x66, x65, x64, x63, x62, x61,
x60, x59, x58, x57, x56, x55, x54, x53,
x52, x51, x50, x49, x48, x47, x46, x45,
x44, x43, x42, x41, x40, x39, x38, x37,
x36, x35, x34, x33, x32, x7, x6, x5,
x4, x3, x2, x1, x0, x31, x30, x29,
x28, x27, x26, x25, x24, x23, x22, x21,
x20, x19, x18, x17, x16, x15, x14, x13,
x12, x11, x10, x9, x8;
assign crc_out = {x31,x30,x29,x28,x27,x26,x25,x24,x23,x22,x21,x20,x19,x18,x17,
x16,x15,x14,x13,x12,x11,x10,x9,x8,x7,x6,x5,x4,x3,x2,x1,
x0};
wire d0,d1,d2,d3,d4,d5,d6,d7,d8,d9,d10,d11,d12,d13,d14,
d15,d16,d17,d18,d19,d20,d21,d22,d23,d24,d25,d26,d27,d28,d29,d30,
d31,d32,d33,d34,d35,d36,d37,d38,d39;
assign { d39,d38,d37,d36,d35,d34,d33,d32,d31,d30,d29,d28,d27,d26,d25,
d24,d23,d22,d21,d20,d19,d18,d17,d16,d15,d14,d13,d12,d11,d10,d9,
d8,d7,d6,d5,d4,d3,d2,d1,d0} = dat_in [39:0];
wire c0,c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,
c15,c16,c17,c18,c19,c20,c21,c22,c23,c24,c25,c26,c27,c28,c29,c30,
c31;
assign { c31,c30,c29,c28,c27,c26,c25,c24,c23,c22,c21,c20,c19,c18,c17,
c16,c15,c14,c13,c12,c11,c10,c9,c8,c7,c6,c5,c4,c3,c2,c1,
c0} = crc_in [31:0];
xor6 x123i (.out(x123),.a(d12),.b(d31),.c(c23),.d(c24),.e(1'b0),.f(1'b0)); // 4 ins 1 outs
xor6 x122i (.out(x122),.a(d9),.b(d2),.c(x96),.d(x33),.e(1'b0),.f(1'b0)); // 4 ins 1 outs
xor6 x121i (.out(x121),.a(x55),.b(c8),.c(1'b0),.d(1'b0),.e(1'b0),.f(1'b0)); // 2 ins 1 outs
xor6 x120i (.out(x120),.a(d16),.b(d1),.c(d7),.d(d6),.e(1'b0),.f(1'b0)); // 4 ins 1 outs
xor6 x119i (.out(x119),.a(d16),.b(d1),.c(x94),.d(d20),.e(1'b0),.f(1'b0)); // 4 ins 1 outs
xor6 x118i (.out(x118),.a(x34),.b(c8),.c(d23),.d(d19),.e(1'b0),.f(1'b0)); // 4 ins 1 outs
xor6 x117i (.out(x117),.a(x36),.b(d4),.c(c10),.d(d16),.e(1'b0),.f(1'b0)); // 4 ins 1 outs
xor6 x116i (.out(x116),.a(c3),.b(c14),.c(x93),.d(x48),.e(1'b0),.f(1'b0)); // 4 ins 1 outs
xor6 x115i (.out(x115),.a(d14),.b(c18),.c(x92),.d(d33),.e(1'b0),.f(1'b0)); // 4 ins 1 outs
xor6 x114i (.out(x114),.a(x48),.b(x63),.c(d5),.d(c24),.e(1'b0),.f(1'b0)); // 4 ins 1 outs
xor6 x113i (.out(x113),.a(x35),.b(d16),.c(d5),.d(c15),.e(1'b0),.f(1'b0)); // 4 ins 1 outs
xor6 x112i (.out(x112),.a(c27),.b(c19),.c(x87),.d(x51),.e(d18),.f(1'b0)); // 5 ins 1 outs
xor6 x111i (.out(x111),.a(d14),.b(d6),.c(x41),.d(d20),.e(d39),.f(1'b0)); // 5 ins 1 outs
xor6 x110i (.out(x110),.a(c2),.b(c18),.c(x32),.d(d26),.e(c26),.f(1'b0)); // 5 ins 1 outs
xor6 x109i (.out(x109),.a(d15),.b(d14),.c(x55),.d(x48),.e(c30),.f(1'b0)); // 5 ins 1 outs
xor6 x108i (.out(x108),.a(x84),.b(c17),.c(x45),.d(x33),.e(1'b0),.f(1'b0)); // 4 ins 1 outs
xor6 x107i (.out(x107),.a(d6),.b(x32),.c(c15),.d(x63),.e(c17),.f(1'b0)); // 5 ins 1 outs
xor6 x106i (.out(x106),.a(x82),.b(x51),.c(x38),.d(c28),.e(1'b0),.f(1'b0)); // 4 ins 1 outs
xor6 x105i (.out(x105),.a(c6),.b(c30),.c(d38),.d(d32),.e(d6),.f(1'b0)); // 5 ins 1 outs
xor6 x104i (.out(x104),.a(c12),.b(d4),.c(c4),.d(x51),.e(d20),.f(1'b0)); // 5 ins 1 outs
xor6 x103i (.out(x103),.a(d35),.b(x41),.c(d4),.d(x37),.e(c6),.f(1'b0)); // 5 ins 1 outs
xor6 x102i (.out(x102),.a(d10),.b(c2),.c(d35),.d(d25),.e(x38),.f(1'b0)); // 5 ins 1 outs
xor6 x101i (.out(x101),.a(d11),.b(x50),.c(x33),.d(c3),.e(x72),.f(1'b0)); // 5 ins 1 outs
xor6 x100i (.out(x100),.a(c6),.b(c17),.c(c19),.d(c25),.e(x34),.f(1'b0)); // 5 ins 1 outs
xor6 x99i (.out(x99),.a(x46),.b(x42),.c(x55),.d(c17),.e(d2),.f(1'b0)); // 5 ins 1 outs
xor6 x98i (.out(x98),.a(c20),.b(d23),.c(d28),.d(c1),.e(x35),.f(1'b0)); // 5 ins 1 outs
xor6 x97i (.out(x97),.a(d1),.b(d3),.c(x44),.d(d19),.e(x47),.f(1'b0)); // 5 ins 1 outs
xor6 x96i (.out(x96),.a(d4),.b(d36),.c(d23),.d(c1),.e(d32),.f(1'b0)); // 5 ins 1 outs
xor6 x95i (.out(x95),.a(c18),.b(d26),.c(x50),.d(c19),.e(c11),.f(1'b0)); // 5 ins 1 outs
xor6 x94i (.out(x94),.a(c30),.b(d38),.c(d25),.d(c12),.e(d27),.f(1'b0)); // 5 ins 1 outs
xor6 x93i (.out(x93),.a(c13),.b(d11),.c(d36),.d(d21),.e(c17),.f(1'b0)); // 5 ins 1 outs
xor6 x92i (.out(x92),.a(d26),.b(d27),.c(c14),.d(d22),.e(d2),.f(1'b0)); // 5 ins 1 outs
xor6 x91i (.out(x91),.a(c5),.b(c19),.c(d6),.d(x32),.e(d27),.f(1'b0)); // 5 ins 1 outs
xor6 x90i (.out(x90),.a(c0),.b(d32),.c(d8),.d(x41),.e(1'b0),.f(1'b0)); // 4 ins 3 outs
xor6 x89i (.out(x89),.a(c30),.b(d38),.c(d0),.d(x36),.e(x45),.f(1'b0)); // 5 ins 2 outs
xor6 x88i (.out(x88),.a(x42),.b(d23),.c(c23),.d(d31),.e(1'b0),.f(1'b0)); // 4 ins 2 outs
xor6 x87i (.out(x87),.a(d14),.b(c17),.c(c10),.d(d7),.e(d6),.f(1'b0)); // 5 ins 1 outs
xor6 x86i (.out(x86),.a(c6),.b(c24),.c(x38),.d(c11),.e(x37),.f(1'b0)); // 5 ins 1 outs
xor6 x85i (.out(x85),.a(d18),.b(d36),.c(d39),.d(d28),.e(x37),.f(1'b0)); // 5 ins 1 outs
xor6 x84i (.out(x84),.a(d25),.b(d32),.c(c19),.d(c31),.e(d19),.f(1'b0)); // 5 ins 1 outs
xor6 x83i (.out(x83),.a(d23),.b(x33),.c(d25),.d(x45),.e(d28),.f(1'b0)); // 5 ins 1 outs
xor6 x82i (.out(x82),.a(d5),.b(c4),.c(d1),.d(d30),.e(c22),.f(1'b0)); // 5 ins 1 outs
xor6 x81i (.out(x81),.a(c31),.b(x63),.c(c6),.d(c12),.e(c28),.f(1'b0)); // 5 ins 1 outs
xor6 x80i (.out(x80),.a(c4),.b(x51),.c(c7),.d(d39),.e(d15),.f(1'b0)); // 5 ins 2 outs
xor6 x79i (.out(x79),.a(x36),.b(d10),.c(d27),.d(d34),.e(c24),.f(1'b0)); // 5 ins 1 outs
xor6 x78i (.out(x78),.a(d38),.b(c7),.c(x47),.d(d12),.e(x40),.f(1'b0)); // 5 ins 1 outs
xor6 x77i (.out(x77),.a(x42),.b(c11),.c(d7),.d(d39),.e(x36),.f(1'b0)); // 5 ins 1 outs
xor6 x76i (.out(x76),.a(c8),.b(d32),.c(d35),.d(x45),.e(1'b0),.f(1'b0)); // 4 ins 3 outs
xor6 x75i (.out(x75),.a(d17),.b(x44),.c(c28),.d(x50),.e(c9),.f(1'b0)); // 5 ins 2 outs
xor6 x74i (.out(x74),.a(x35),.b(d25),.c(d4),.d(d12),.e(1'b0),.f(1'b0)); // 4 ins 4 outs
xor6 x73i (.out(x73),.a(d3),.b(c20),.c(x48),.d(d7),.e(1'b0),.f(1'b0)); // 4 ins 3 outs
xor6 x72i (.out(x72),.a(c24),.b(d20),.c(d6),.d(c11),.e(d30),.f(1'b0)); // 5 ins 2 outs
xor6 x71i (.out(x71),.a(d23),.b(d2),.c(c21),.d(x45),.e(d29),.f(1'b0)); // 5 ins 2 outs
xor6 x70i (.out(x70),.a(x36),.b(c20),.c(c31),.d(d22),.e(c28),.f(1'b0)); // 5 ins 1 outs
xor6 x69i (.out(x69),.a(d0),.b(d39),.c(c8),.d(d2),.e(x46),.f(1'b0)); // 5 ins 2 outs
xor6 x68i (.out(x68),.a(c1),.b(d27),.c(d16),.d(x40),.e(d9),.f(1'b0)); // 5 ins 2 outs
xor6 x67i (.out(x67),.a(d30),.b(x46),.c(d27),.d(c22),.e(d23),.f(1'b0)); // 5 ins 2 outs
xor6 x66i (.out(x66),.a(x47),.b(c0),.c(d8),.d(x36),.e(d19),.f(1'b0)); // 5 ins 2 outs
xor6 x65i (.out(x65),.a(c25),.b(c28),.c(x47),.d(d33),.e(1'b0),.f(1'b0)); // 4 ins 3 outs
xor6 x64i (.out(x64),.a(d19),.b(x34),.c(c31),.d(d28),.e(d5),.f(1'b0)); // 5 ins 2 outs
xor6 x63i (.out(x63),.a(d14),.b(d36),.c(c22),.d(c15),.e(d30),.f(1'b0)); // 5 ins 3 outs
xor6 x62i (.out(x62),.a(x37),.b(d7),.c(x41),.d(c8),.e(d3),.f(1'b0)); // 5 ins 3 outs
xor6 x61i (.out(x61),.a(d14),.b(c10),.c(d18),.d(d39),.e(x47),.f(1'b0)); // 5 ins 3 outs
xor6 x60i (.out(x60),.a(c27),.b(d25),.c(c15),.d(x34),.e(c31),.f(1'b0)); // 5 ins 2 outs
xor6 x59i (.out(x59),.a(c13),.b(d21),.c(d34),.d(x46),.e(c26),.f(1'b0)); // 5 ins 3 outs
xor6 x58i (.out(x58),.a(d14),.b(c22),.c(d20),.d(d5),.e(x44),.f(1'b0)); // 5 ins 5 outs
xor6 x57i (.out(x57),.a(c23),.b(d31),.c(d2),.d(d19),.e(x38),.f(1'b0)); // 5 ins 3 outs
xor6 x56i (.out(x56),.a(x51),.b(d28),.c(c19),.d(d33),.e(c20),.f(1'b0)); // 5 ins 3 outs
xor6 x55i (.out(x55),.a(d6),.b(c12),.c(d20),.d(c9),.e(d17),.f(1'b0)); // 5 ins 3 outs
xor6 x54i (.out(x54),.a(c8),.b(x32),.c(x42),.d(x34),.e(c27),.f(1'b0)); // 5 ins 3 outs
xor6 x53i (.out(x53),.a(c15),.b(d32),.c(d7),.d(x40),.e(c4),.f(1'b0)); // 5 ins 4 outs
xor6 x52i (.out(x52),.a(c19),.b(x33),.c(c27),.d(d22),.e(c14),.f(1'b0)); // 5 ins 4 outs
xor6 x51i (.out(x51),.a(c16),.b(d6),.c(d24),.d(c4),.e(1'b0),.f(1'b0)); // 4 ins 5 outs
xor6 x50i (.out(x50),.a(d0),.b(c12),.c(d39),.d(c4),.e(c22),.f(1'b0)); // 5 ins 3 outs
xor6 x49i (.out(x49),.a(d37),.b(x37),.c(x33),.d(c29),.e(c31),.f(1'b0)); // 5 ins 5 outs
xor6 x48i (.out(x48),.a(c21),.b(d29),.c(c11),.d(d35),.e(d28),.f(1'b0)); // 5 ins 4 outs
xor6 x47i (.out(x47),.a(c5),.b(d39),.c(d5),.d(d13),.e(1'b0),.f(1'b0)); // 4 ins 5 outs
xor6 x46i (.out(x46),.a(c15),.b(c18),.c(d14),.d(c11),.e(d26),.f(1'b0)); // 5 ins 4 outs
xor6 x45i (.out(x45),.a(c3),.b(d1),.c(d11),.d(d7),.e(1'b0),.f(1'b0)); // 4 ins 5 outs
xor6 x44i (.out(x44),.a(d30),.b(c13),.c(d4),.d(c12),.e(d21),.f(1'b0)); // 5 ins 4 outs
xor6 x43i (.out(x43),.a(c7),.b(d3),.c(x35),.d(d15),.e(1'b0),.f(1'b0)); // 4 ins 9 outs
xor6 x42i (.out(x42),.a(d32),.b(c24),.c(d2),.d(d19),.e(c6),.f(1'b0)); // 5 ins 4 outs
xor6 x41i (.out(x41),.a(d22),.b(d23),.c(d25),.d(c17),.e(c14),.f(1'b0)); // 5 ins 5 outs
xor6 x40i (.out(x40),.a(d12),.b(c26),.c(c8),.d(d34),.e(c27),.f(1'b0)); // 5 ins 4 outs
xor6 x39i (.out(x39),.a(c28),.b(d27),.c(d1),.d(c19),.e(x32),.f(1'b0)); // 5 ins 8 outs
xor6 x38i (.out(x38),.a(c30),.b(c31),.c(d38),.d(c10),.e(d18),.f(1'b0)); // 5 ins 6 outs
xor6 x37i (.out(x37),.a(d28),.b(c20),.c(c2),.d(d7),.e(d10),.f(1'b0)); // 5 ins 5 outs
xor6 x36i (.out(x36),.a(c9),.b(d37),.c(d17),.d(d35),.e(c29),.f(1'b0)); // 5 ins 6 outs
xor6 x35i (.out(x35),.a(c17),.b(c25),.c(c0),.d(d33),.e(d8),.f(1'b0)); // 5 ins 5 outs
xor6 x34i (.out(x34),.a(d0),.b(d36),.c(c18),.d(d26),.e(d16),.f(1'b0)); // 5 ins 5 outs
xor6 x33i (.out(x33),.a(c21),.b(d24),.c(c24),.d(c16),.e(d29),.f(1'b0)); // 5 ins 7 outs
xor6 x32i (.out(x32),.a(d9),.b(c23),.c(d31),.d(d14),.e(c1),.f(1'b0)); // 5 ins 5 outs
xor6 x7i (.out(x7),.a(x113),.b(x43),.c(x90),.d(x69),.e(x59),.f(x49)); // 6 ins 1 outs
xor6 x6i (.out(x6),.a(x105),.b(x90),.c(x71),.d(x58),.e(1'b0),.f(1'b0)); // 4 ins 1 outs
xor6 x5i (.out(x5),.a(d0),.b(x97),.c(x49),.d(x72),.e(1'b0),.f(1'b0)); // 4 ins 1 outs
xor6 x4i (.out(x4),.a(x101),.b(x43),.c(x74),.d(x35),.e(x57),.f(1'b0)); // 5 ins 1 outs
xor6 x3i (.out(x3),.a(d36),.b(x77),.c(x43),.d(x39),.e(x102),.f(1'b0)); // 5 ins 1 outs
xor6 x2i (.out(x2),.a(d7),.b(x106),.c(x54),.d(x66),.e(1'b0),.f(1'b0)); // 4 ins 1 outs
xor6 x1i (.out(x1),.a(c5),.b(c25),.c(x89),.d(x68),.e(x56),.f(d13)); // 6 ins 1 outs
xor6 x0i (.out(x0),.a(x107),.b(x53),.c(x60),.d(x49),.e(1'b0),.f(1'b0)); // 4 ins 1 outs
xor6 x31i (.out(x31),.a(x83),.b(x43),.c(x73),.d(x114),.e(x39),.f(1'b0)); // 5 ins 1 outs
xor6 x30i (.out(x30),.a(c11),.b(x90),.c(x103),.d(x52),.e(x67),.f(1'b0)); // 5 ins 1 outs
xor6 x29i (.out(x29),.a(d13),.b(x91),.c(d35),.d(x73),.e(x41),.f(x59)); // 6 ins 1 outs
xor6 x28i (.out(x28),.a(x115),.b(x56),.c(x58),.d(x74),.e(1'b0),.f(1'b0)); // 4 ins 1 outs
xor6 x27i (.out(x27),.a(x108),.b(d39),.c(x67),.d(x58),.e(1'b0),.f(1'b0)); // 4 ins 1 outs
xor6 x26i (.out(x26),.a(x104),.b(d14),.c(x57),.d(x69),.e(x62),.f(1'b0)); // 5 ins 1 outs
xor6 x25i (.out(x25),.a(x70),.b(x43),.c(x116),.d(x57),.e(1'b0),.f(1'b0)); // 4 ins 1 outs
xor6 x24i (.out(x24),.a(x85),.b(x64),.c(x117),.d(x39),.e(x54),.f(x58)); // 6 ins 1 outs
xor6 x23i (.out(x23),.a(x78),.b(x39),.c(x64),.d(x109),.e(1'b0),.f(1'b0)); // 4 ins 1 outs
xor6 x22i (.out(x22),.a(x86),.b(x49),.c(x76),.d(x39),.e(x118),.f(x53)); // 6 ins 1 outs
xor6 x21i (.out(x21),.a(x79),.b(x110),.c(x61),.d(x52),.e(1'b0),.f(1'b0)); // 4 ins 1 outs
xor6 x20i (.out(x20),.a(d9),.b(x98),.c(x40),.d(x75),.e(x60),.f(1'b0)); // 5 ins 1 outs
xor6 x19i (.out(x19),.a(x119),.b(x43),.c(x76),.d(x52),.e(1'b0),.f(1'b0)); // 4 ins 1 outs
xor6 x18i (.out(x18),.a(x88),.b(x80),.c(x33),.d(x49),.e(x59),.f(1'b0)); // 5 ins 1 outs
xor6 x17i (.out(x17),.a(x81),.b(x38),.c(x65),.d(x39),.e(x111),.f(1'b0)); // 5 ins 1 outs
xor6 x16i (.out(x16),.a(x95),.b(d32),.c(d12),.d(x44),.e(x52),.f(x66)); // 6 ins 1 outs
xor6 x15i (.out(x15),.a(x112),.b(x43),.c(x58),.d(x68),.e(1'b0),.f(1'b0)); // 4 ins 1 outs
xor6 x14i (.out(x14),.a(x99),.b(d1),.c(d4),.d(x43),.e(x71),.f(1'b0)); // 5 ins 1 outs
xor6 x13i (.out(x13),.a(x120),.b(c11),.c(x62),.d(x88),.e(x61),.f(1'b0)); // 5 ins 1 outs
xor6 x12i (.out(x12),.a(d2),.b(x80),.c(d12),.d(x75),.e(x39),.f(x61)); // 6 ins 1 outs
xor6 x11i (.out(x11),.a(x100),.b(x39),.c(x56),.d(x121),.e(x43),.f(x74)); // 6 ins 1 outs
xor6 x10i (.out(x10),.a(x65),.b(d7),.c(x54),.d(x73),.e(c31),.f(1'b0)); // 5 ins 1 outs
xor6 x9i (.out(x9),.a(x122),.b(x38),.c(x65),.d(x76),.e(x53),.f(1'b0)); // 5 ins 1 outs
xor6 x8i (.out(x8),.a(x123),.b(x74),.c(x89),.d(x62),.e(x53),.f(1'b0)); // 5 ins 1 outs
endmodule
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