mirror of
https://github.com/pConst/basic_verilog.git
synced 2025-01-28 07:02:55 +08:00
344 lines
17 KiB
Coq
344 lines
17 KiB
Coq
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// Copyright 2011 Altera Corporation. All rights reserved.
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// Altera products are protected under numerous U.S. and foreign patents,
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// maskwork rights, copyrights and other intellectual property laws.
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//
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// This reference design file, and your use thereof, is subject to and governed
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// by the terms and conditions of the applicable Altera Reference Design
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// License Agreement (either as signed by you or found at www.altera.com). By
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// using this reference design file, you indicate your acceptance of such terms
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// and conditions between you and Altera Corporation. In the event that you do
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// not agree with such terms and conditions, you may not use the reference
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// design file and please promptly destroy any copies you have made.
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//
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// This reference design file is being provided on an "as-is" basis and as an
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// accommodation and therefore all warranties, representations or guarantees of
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// any kind (whether express, implied or statutory) including, without
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// limitation, warranties of merchantability, non-infringement, or fitness for
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// a particular purpose, are specifically disclaimed. By making this reference
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// design file available, Altera expressly does not recommend, suggest or
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// require that this reference design file be used in combination with any
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// other product not provided by Altera.
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/////////////////////////////////////////////////////////////////////////////
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`timescale 1 ps / 1 ps
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//
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// 32 bit CRC of 64 data bits (reversed - MSB first)
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// polynomial : 1edc6f41
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// x^28 + x^27 + x^26 + x^25 + x^23 + x^22 + x^20 + x^19 + x^18 + x^14 + x^13 + x^11 + x^10 + x^9 + x^8 + x^6 + x^0
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//
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// CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD
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// 00000000001111111111222222222233 0000000000111111111122222222223333333333444444444455555555556666
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// 01234567890123456789012345678901 0123456789012345678901234567890123456789012345678901234567890123
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// C00 = ...###....##.####..#.##....#..#. ................................................................
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// C01 = #...###....##.####..#.##....#..# ................................................................
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// C02 = ##...###....##.####..#.##....#.. ................................................................
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// C03 = .##...###....##.####..#.##....#. ................................................................
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// C04 = #.##...###....##.####..#.##....# ................................................................
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// C05 = ##.##...###....##.####..#.##.... ................................................................
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// C06 = ####.....#...###.#..#....#..#.#. ................................................................
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// C07 = .####.....#...###.#..#....#..#.# ................................................................
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// C08 = #.#.......#..##..#...#.......... ................................................................
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// C09 = .#..##....#..#..#.##.#.....#..#. ................................................................
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// C10 = #.###.#...#..#.###..##.....##.## ................................................................
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// C11 = .#.....#..#..#.#.###.......##### ................................................................
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// C12 = ..#.....#..#..#.#.###.......#### ................................................................
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// C13 = ....##...######.##..#.#....#.#.# ................................................................
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// C14 = #..##.#.....#...####..##...##... ................................................................
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// C15 = .#..##.#.....#...####..##...##.. ................................................................
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// C16 = #.#..##.#.....#...####..##...##. ................................................................
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// C17 = ##.#..##.#.....#...####..##...## ................................................................
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// C18 = .###.#.##..#.###...##..#..#...## ................................................................
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// C19 = #.#..##.######.....##.#.#.....## ................................................................
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// C20 = .#..####.#..#..##..##.##.#.#..## ................................................................
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// C21 = #.#..####.#..#..##..##.##.#.#..# ................................................................
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// C22 = .#..#######..#.#####....##...##. ................................................................
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// C23 = #.###.####...#.#.##.###..###...# ................................................................
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// C24 = .#.###.####...#.#.##.###..###... ................................................................
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// C25 = #.##..#.##...##.##..##.##...###. ................................................................
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// C26 = .#...#.#.#.#.#..####....##.#.#.# ................................................................
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// C27 = #.#####.#..###.####.###..####... ................................................................
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// C28 = ##....##.####..#.##....#..#.###. ................................................................
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// C29 = ###....##.####..#.##....#..#.### ................................................................
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// C30 = .###....##.####..#.##....#..#.## ................................................................
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// C31 = ..###....##.####..#.##....#..#.# ................................................................
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//
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// Number of XORs used is 32
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// Maximum XOR input count is 21
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// Best possible depth in 4 LUTs = 3
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// Best possible depth in 5 LUTs = 2
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// Best possible depth in 6 LUTs = 2
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// Total XOR inputs 484
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//
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// Special signal relations -
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// none
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//
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module crc32c_zer64 (c,crc_out);
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input[31:0] c;
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output[31:0] crc_out;
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wire[31:0] crc_out;
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parameter METHOD = 1;
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generate
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if (METHOD == 0)
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crc32c_zer64_flat cc (.c(c),.crc_out(crc_out));
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else
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crc32c_zer64_factor cc (.c(c),.crc_out(crc_out));
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endgenerate
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endmodule
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module crc32c_zer64_flat (c,crc_out);
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input[31:0] c;
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output[31:0] crc_out;
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wire[31:0] crc_out;
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assign crc_out[0] =
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c[3] ^ c[4] ^ c[5] ^ c[10] ^ c[11] ^ c[13] ^
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c[14] ^ c[15] ^ c[16] ^ c[19] ^ c[21] ^ c[22] ^ c[27] ^
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c[30];
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assign crc_out[1] =
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c[0] ^ c[4] ^ c[5] ^ c[6] ^ c[11] ^ c[12] ^
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c[14] ^ c[15] ^ c[16] ^ c[17] ^ c[20] ^ c[22] ^ c[23] ^
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c[28] ^ c[31];
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assign crc_out[2] =
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c[0] ^ c[1] ^ c[5] ^ c[6] ^ c[7] ^ c[12] ^
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c[13] ^ c[15] ^ c[16] ^ c[17] ^ c[18] ^ c[21] ^ c[23] ^
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c[24] ^ c[29];
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assign crc_out[3] =
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c[1] ^ c[2] ^ c[6] ^ c[7] ^ c[8] ^ c[13] ^
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c[14] ^ c[16] ^ c[17] ^ c[18] ^ c[19] ^ c[22] ^ c[24] ^
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c[25] ^ c[30];
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assign crc_out[4] =
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c[0] ^ c[2] ^ c[3] ^ c[7] ^ c[8] ^ c[9] ^
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c[14] ^ c[15] ^ c[17] ^ c[18] ^ c[19] ^ c[20] ^ c[23] ^
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c[25] ^ c[26] ^ c[31];
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assign crc_out[5] =
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c[0] ^ c[1] ^ c[3] ^ c[4] ^ c[8] ^ c[9] ^
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c[10] ^ c[15] ^ c[16] ^ c[18] ^ c[19] ^ c[20] ^ c[21] ^
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c[24] ^ c[26] ^ c[27];
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assign crc_out[6] =
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c[0] ^ c[1] ^ c[2] ^ c[3] ^ c[9] ^ c[13] ^
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c[14] ^ c[15] ^ c[17] ^ c[20] ^ c[25] ^ c[28] ^ c[30];
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assign crc_out[7] =
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c[1] ^ c[2] ^ c[3] ^ c[4] ^ c[10] ^ c[14] ^
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c[15] ^ c[16] ^ c[18] ^ c[21] ^ c[26] ^ c[29] ^ c[31];
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assign crc_out[8] =
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c[0] ^ c[2] ^ c[10] ^ c[13] ^ c[14] ^ c[17] ^
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c[21];
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assign crc_out[9] =
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c[1] ^ c[4] ^ c[5] ^ c[10] ^ c[13] ^ c[16] ^
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c[18] ^ c[19] ^ c[21] ^ c[27] ^ c[30];
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assign crc_out[10] =
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c[0] ^ c[2] ^ c[3] ^ c[4] ^ c[6] ^ c[10] ^
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c[13] ^ c[15] ^ c[16] ^ c[17] ^ c[20] ^ c[21] ^ c[27] ^
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c[28] ^ c[30] ^ c[31];
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assign crc_out[11] =
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c[1] ^ c[7] ^ c[10] ^ c[13] ^ c[15] ^ c[17] ^
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c[18] ^ c[19] ^ c[27] ^ c[28] ^ c[29] ^ c[30] ^ c[31];
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assign crc_out[12] =
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c[2] ^ c[8] ^ c[11] ^ c[14] ^ c[16] ^ c[18] ^
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c[19] ^ c[20] ^ c[28] ^ c[29] ^ c[30] ^ c[31];
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assign crc_out[13] =
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c[4] ^ c[5] ^ c[9] ^ c[10] ^ c[11] ^ c[12] ^
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c[13] ^ c[14] ^ c[16] ^ c[17] ^ c[20] ^ c[22] ^ c[27] ^
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c[29] ^ c[31];
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assign crc_out[14] =
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c[0] ^ c[3] ^ c[4] ^ c[6] ^ c[12] ^ c[16] ^
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c[17] ^ c[18] ^ c[19] ^ c[22] ^ c[23] ^ c[27] ^ c[28];
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assign crc_out[15] =
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c[1] ^ c[4] ^ c[5] ^ c[7] ^ c[13] ^ c[17] ^
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c[18] ^ c[19] ^ c[20] ^ c[23] ^ c[24] ^ c[28] ^ c[29];
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assign crc_out[16] =
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c[0] ^ c[2] ^ c[5] ^ c[6] ^ c[8] ^ c[14] ^
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c[18] ^ c[19] ^ c[20] ^ c[21] ^ c[24] ^ c[25] ^ c[29] ^
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c[30];
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assign crc_out[17] =
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c[0] ^ c[1] ^ c[3] ^ c[6] ^ c[7] ^ c[9] ^
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c[15] ^ c[19] ^ c[20] ^ c[21] ^ c[22] ^ c[25] ^ c[26] ^
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c[30] ^ c[31];
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assign crc_out[18] =
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c[1] ^ c[2] ^ c[3] ^ c[5] ^ c[7] ^ c[8] ^
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c[11] ^ c[13] ^ c[14] ^ c[15] ^ c[19] ^ c[20] ^ c[23] ^
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c[26] ^ c[30] ^ c[31];
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assign crc_out[19] =
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c[0] ^ c[2] ^ c[5] ^ c[6] ^ c[8] ^ c[9] ^
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c[10] ^ c[11] ^ c[12] ^ c[13] ^ c[19] ^ c[20] ^ c[22] ^
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c[24] ^ c[30] ^ c[31];
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assign crc_out[20] =
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c[1] ^ c[4] ^ c[5] ^ c[6] ^ c[7] ^ c[9] ^
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c[12] ^ c[15] ^ c[16] ^ c[19] ^ c[20] ^ c[22] ^ c[23] ^
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c[25] ^ c[27] ^ c[30] ^ c[31];
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assign crc_out[21] =
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c[0] ^ c[2] ^ c[5] ^ c[6] ^ c[7] ^ c[8] ^
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c[10] ^ c[13] ^ c[16] ^ c[17] ^ c[20] ^ c[21] ^ c[23] ^
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c[24] ^ c[26] ^ c[28] ^ c[31];
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assign crc_out[22] =
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c[1] ^ c[4] ^ c[5] ^ c[6] ^ c[7] ^ c[8] ^
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c[9] ^ c[10] ^ c[13] ^ c[15] ^ c[16] ^ c[17] ^ c[18] ^
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c[19] ^ c[24] ^ c[25] ^ c[29] ^ c[30];
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assign crc_out[23] =
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c[0] ^ c[2] ^ c[3] ^ c[4] ^ c[6] ^ c[7] ^
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c[8] ^ c[9] ^ c[13] ^ c[15] ^ c[17] ^ c[18] ^ c[20] ^
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c[21] ^ c[22] ^ c[25] ^ c[26] ^ c[27] ^ c[31];
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assign crc_out[24] =
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c[1] ^ c[3] ^ c[4] ^ c[5] ^ c[7] ^ c[8] ^
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c[9] ^ c[10] ^ c[14] ^ c[16] ^ c[18] ^ c[19] ^ c[21] ^
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c[22] ^ c[23] ^ c[26] ^ c[27] ^ c[28];
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assign crc_out[25] =
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c[0] ^ c[2] ^ c[3] ^ c[6] ^ c[8] ^ c[9] ^
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c[13] ^ c[14] ^ c[16] ^ c[17] ^ c[20] ^ c[21] ^ c[23] ^
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c[24] ^ c[28] ^ c[29] ^ c[30];
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assign crc_out[26] =
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c[1] ^ c[5] ^ c[7] ^ c[9] ^ c[11] ^ c[13] ^
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c[16] ^ c[17] ^ c[18] ^ c[19] ^ c[24] ^ c[25] ^ c[27] ^
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c[29] ^ c[31];
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assign crc_out[27] =
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c[0] ^ c[2] ^ c[3] ^ c[4] ^ c[5] ^ c[6] ^
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c[8] ^ c[11] ^ c[12] ^ c[13] ^ c[15] ^ c[16] ^ c[17] ^
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c[18] ^ c[20] ^ c[21] ^ c[22] ^ c[25] ^ c[26] ^ c[27] ^
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c[28];
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assign crc_out[28] =
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c[0] ^ c[1] ^ c[6] ^ c[7] ^ c[9] ^ c[10] ^
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c[11] ^ c[12] ^ c[15] ^ c[17] ^ c[18] ^ c[23] ^ c[26] ^
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c[28] ^ c[29] ^ c[30];
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assign crc_out[29] =
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c[0] ^ c[1] ^ c[2] ^ c[7] ^ c[8] ^ c[10] ^
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c[11] ^ c[12] ^ c[13] ^ c[16] ^ c[18] ^ c[19] ^ c[24] ^
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c[27] ^ c[29] ^ c[30] ^ c[31];
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assign crc_out[30] =
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c[1] ^ c[2] ^ c[3] ^ c[8] ^ c[9] ^ c[11] ^
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c[12] ^ c[13] ^ c[14] ^ c[17] ^ c[19] ^ c[20] ^ c[25] ^
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c[28] ^ c[30] ^ c[31];
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assign crc_out[31] =
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c[2] ^ c[3] ^ c[4] ^ c[9] ^ c[10] ^ c[12] ^
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c[13] ^ c[14] ^ c[15] ^ c[18] ^ c[20] ^ c[21] ^ c[26] ^
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c[29] ^ c[31];
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endmodule
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module crc32c_zer64_factor (c,crc_out);
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input[31:0] c;
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output[31:0] crc_out;
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wire[31:0] crc_out;
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wire[47:0] h ;
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xor6 cx_0 (crc_out[0], h[2] , h[8] , h[10] , h[13] , h[46] , 1'b0);
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xor6 cx_1 (crc_out[1], h[6] , h[13] , h[14] , h[28] , h[45] , 1'b0);
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xor6 cx_2 (crc_out[2], c[21] , c[23] , h[0] , h[5] , h[14] , h[34]);
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xor6 cx_3 (crc_out[3], c[24] , h[0] , h[1] , h[4] , h[44] , 1'b0);
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xor6 cx_4 (crc_out[4], h[8] , h[42] , h[43] , h[47] , 1'b0 , 1'b0);
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xor6 cx_5 (crc_out[5], h[0] , h[7] , h[9] , h[13] , h[40] , 1'b0);
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xor6 cx_6 (crc_out[6], h[1] , h[4] , h[12] , h[14] , h[39] , 1'b0);
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xor6 cx_7 (crc_out[7], h[2] , h[7] , h[11] , h[38] , 1'b0 , 1'b0);
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xor6 cx_8 (crc_out[8], c[0] , c[14] , h[3] , h[47] , 1'b0 , 1'b0);
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xor6 cx_9 (crc_out[9], c[7] , c[30] , c[31] , h[0] , h[3] , h[13]);
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xor6 cx_10 (crc_out[10], h[1] , h[3] , h[13] , h[14] , h[36] , h[41]);
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xor6 cx_11 (crc_out[11], c[30] , h[0] , h[2] , h[35] , 1'b0 , 1'b0);
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xor6 cx_12 (crc_out[12], c[13] , c[14] , c[18] , h[1] , h[10] , h[37]);
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xor6 cx_13 (crc_out[13], c[3] , h[2] , h[12] , h[13] , h[28] , 1'b0);
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xor6 cx_14 (crc_out[14], h[13] , h[14] , h[15] , h[27] , h[32] , h[41]);
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xor6 cx_15 (crc_out[15], c[4] , h[0] , h[5] , h[6] , 1'b0 , 1'b0);
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xor6 cx_16 (crc_out[16], c[14] , c[21] , h[1] , h[4] , h[5] , h[43]);
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xor6 cx_17 (crc_out[17], h[0] , h[4] , h[7] , h[14] , h[22] , h[31]);
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xor6 cx_18 (crc_out[18], h[0] , h[1] , h[8] , h[10] , h[30] , 1'b0);
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xor6 cx_19 (crc_out[19], c[24] , h[1] , h[10] , h[15] , h[29] , 1'b0);
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xor6 cx_20 (crc_out[20], c[31] , h[0] , h[4] , h[13] , h[15] , h[27]);
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xor6 cx_21 (crc_out[21], h[1] , h[2] , h[5] , h[14] , h[26] , h[27]);
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xor6 cx_22 (crc_out[22], h[0] , h[4] , h[5] , h[25] , h[33] , 1'b0);
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xor6 cx_23 (crc_out[23], h[1] , h[7] , h[14] , h[22] , h[24] , 1'b0);
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xor6 cx_24 (crc_out[24], c[28] , h[0] , h[7] , h[13] , h[23] , 1'b0);
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xor6 cx_25 (crc_out[25], h[1] , h[7] , h[8] , h[14] , h[21] , h[37]);
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xor6 cx_26 (crc_out[26], h[0] , h[2] , h[13] , h[20] , h[33] , 1'b0);
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xor6 cx_27 (crc_out[27], h[1] , h[7] , h[13] , h[14] , h[15] , h[19]);
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xor6 cx_28 (crc_out[28], c[28] , h[0] , h[2] , h[10] , h[14] , h[18]);
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xor6 cx_29 (crc_out[29], h[0] , h[1] , h[9] , h[10] , h[17] , h[34]);
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xor6 cx_30 (crc_out[30], h[1] , h[6] , h[10] , h[12] , h[16] , 1'b0);
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xor6 cx_31 (crc_out[31], c[8] , c[12] , h[1] , h[2] , h[7] , h[11]);
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xor6 hx_0 (h[0], c[1] , c[7] , c[18] , c[19] , 1'b0 , 1'b0); // used by 14
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xor6 hx_1 (h[1], c[2] , c[8] , c[13] , c[20] , 1'b0 , 1'b0); // used by 14
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xor6 hx_2 (h[2], c[10] , c[13] , c[29] , c[31] , 1'b0 , 1'b0); // used by 8
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xor6 hx_3 (h[3], c[10] , c[13] , c[21] , c[31] , 1'b0 , 1'b0); // used by 3
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xor6 hx_4 (h[4], c[6] , c[20] , c[25] , c[30] , 1'b0 , 1'b0); // used by 6
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xor6 hx_5 (h[5], c[5] , c[13] , c[24] , c[29] , 1'b0 , 1'b0); // used by 5
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xor6 hx_6 (h[6], c[17] , c[20] , c[23] , c[28] , 1'b0 , 1'b0); // used by 3
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xor6 hx_7 (h[7], c[3] , c[9] , c[21] , c[26] , 1'b0 , 1'b0); // used by 8
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xor6 hx_8 (h[8], c[3] , c[14] , c[15] , c[26] , 1'b0 , 1'b0); // used by 4
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xor6 hx_9 (h[9], c[0] , c[8] , c[20] , c[24] , 1'b0 , 1'b0); // used by 2
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xor6 hx_10 (h[10], c[11] , c[19] , c[30] , c[31] , 1'b0 , 1'b0); // used by 7
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xor6 hx_11 (h[11], c[4] , c[13] , c[14] , c[15] , c[18] , 1'b0); // used by 2
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xor6 hx_12 (h[12], c[3] , c[9] , c[14] , c[20] , 1'b0 , 1'b0); // used by 3
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xor6 hx_13 (h[13], c[4] , c[5] , c[16] , c[27] , 1'b0 , 1'b0); // used by 11
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xor6 hx_14 (h[14], c[0] , c[6] , c[15] , c[17] , 1'b0 , 1'b0); // used by 11
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xor6 hx_15 (h[15], c[9] , c[12] , c[18] , c[22] , 1'b0 , 1'b0); // used by 4
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xor6 hx_16 (h[16], c[1] , c[12] , c[23] , c[25] , 1'b0 , 1'b0); // used by 1
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xor6 hx_17 (h[17], c[8] , c[10] , c[27] , c[29] , 1'b0 , 1'b0); // used by 1
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xor6 hx_18 (h[18], c[9] , c[12] , c[13] , c[23] , c[26] , 1'b0); // used by 1
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xor6 hx_19 (h[19], c[11] , c[25] , c[28] , 1'b0 , 1'b0 , 1'b0); // used by 1
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xor6 hx_20 (h[20], c[11] , c[24] , c[25] , 1'b0 , 1'b0 , 1'b0); // used by 1
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xor6 hx_21 (h[21], c[3] , c[23] , c[24] , c[30] , 1'b0 , 1'b0); // used by 1
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xor6 hx_22 (h[22], c[18] , c[22] , c[31] , 1'b0 , 1'b0 , 1'b0); // used by 2
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xor6 hx_23 (h[23], c[8] , c[10] , c[14] , c[22] , c[23] , 1'b0); // used by 1
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xor6 hx_24 (h[24], c[4] , c[7] , c[25] , c[27] , 1'b0 , 1'b0); // used by 1
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xor6 hx_25 (h[25], c[8] , c[15] , c[16] , c[20] , 1'b0 , 1'b0); // used by 1
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xor6 hx_26 (h[26], c[7] , c[16] , c[21] , c[26] , c[28] , 1'b0); // used by 1
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xor6 hx_27 (h[27], c[15] , c[23] , 1'b0 , 1'b0 , 1'b0 , 1'b0); // used by 3
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xor6 hx_28 (h[28], c[11] , c[12] , c[17] , c[22] , 1'b0 , 1'b0); // used by 2
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xor6 hx_29 (h[29], c[0] , c[5] , c[6] , c[10] , c[18] , 1'b0); // used by 1
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xor6 hx_30 (h[30], c[5] , c[18] , c[19] , c[23] , 1'b0 , 1'b0); // used by 1
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xor6 hx_31 (h[31], c[6] , c[17] , 1'b0 , 1'b0 , 1'b0 , 1'b0); // used by 1
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xor6 hx_32 (h[32], c[9] , c[19] , 1'b0 , 1'b0 , 1'b0 , 1'b0); // used by 1
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xor6 hx_33 (h[33], c[4] , c[9] , c[10] , c[17] , 1'b0 , 1'b0); // used by 2
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xor6 hx_34 (h[34], c[12] , c[16] , c[19] , 1'b0 , 1'b0 , 1'b0); // used by 2
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xor6 hx_35 (h[35], c[15] , c[17] , c[27] , c[28] , 1'b0 , 1'b0); // used by 1
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xor6 hx_36 (h[36], c[8] , c[13] , c[30] , 1'b0 , 1'b0 , 1'b0); // used by 1
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xor6 hx_37 (h[37], c[16] , c[28] , c[29] , 1'b0 , 1'b0 , 1'b0); // used by 2
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xor6 hx_38 (h[38], c[1] , c[2] , c[9] , c[16] , 1'b0 , 1'b0); // used by 1
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xor6 hx_39 (h[39], c[1] , c[8] , c[28] , 1'b0 , 1'b0 , 1'b0); // used by 1
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xor6 hx_40 (h[40], c[5] , c[7] , c[10] , c[15] , 1'b0 , 1'b0); // used by 1
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xor6 hx_41 (h[41], c[3] , c[5] , c[28] , 1'b0 , 1'b0 , 1'b0); // used by 2
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xor6 hx_42 (h[42], c[7] , c[8] , c[9] , c[23] , c[25] , 1'b0); // used by 1
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||
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xor6 hx_43 (h[43], c[0] , c[18] , c[19] , c[20] , 1'b0 , 1'b0); // used by 2
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xor6 hx_44 (h[44], c[14] , c[16] , c[17] , c[22] , 1'b0 , 1'b0); // used by 1
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||
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xor6 hx_45 (h[45], c[14] , c[27] , c[31] , 1'b0 , 1'b0 , 1'b0); // used by 1
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||
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xor6 hx_46 (h[46], c[21] , c[22] , c[26] , c[29] , 1'b0 , 1'b0); // used by 1
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||
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xor6 hx_47 (h[47], c[2] , c[17] , c[31] , 1'b0 , 1'b0 , 1'b0); // used by 2
|
||
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|
endmodule
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