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// OpenSPARC T2 Processor File: niu_65data_ecc_check.v
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// ****************************************************************************
// Copyright (c) 2002 by Sun Microsystems Inc.
// All rights reserved. No part of this design may be reproduced stored
// in a retrieval system, or transmitted, in any form or by any means,
// electronic, mechanical, photocopying, recording, or otherwise, without
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// ****************************************************************************
// File Name : ecc_65data_ecc_check.sv
// Last Update : 03/25/04 12:59:19 loj
// ****************************************************************************
// Module : ecc_65data_ecc_check
// Description : Syndrome Gen. and Correction Circuitry for SEC-DED code
// For SEC and SEC-DED, din[72:0] refers to
// {data bits[64:0], check bits[7:0]}.
// dout [72:0] refers to {data bits[64:0], check bits[7:0]}
// if the -p switch is not set and
// {data bits[64:0]} if the -p switch is set.
// Order of bits in din and dout [72:0] are the same as
// dout[72:0] of the ecc_generate module (-p not set).
// Error Signals: error covers CE+UE events, corr_error
// covers CE events and uncorr_error covers UE events.
// This module is used while reading data
// ***************************************************************************
// Date Author Description
// 03/25/04 loj Initial verilog generated from ECC automation script
// ****************************************************************************
module niu_65data_ecc_check (din, dout, no_error, error, corr_error, uncorr_error);
assign syn[7] = din[70] ^ din[67] ^ din[65] ^ din[62] ^ din[60] ^ din[57] ^ din[54] ^ din[51] ^ din[48] ^ din[46] ^ din[44] ^ din[40] ^ din[38] ^ din[36] ^ din[32] ^ din[31] ^ din[27] ^ din[24] ^ din[23] ^ din[19] ^ din[18] ^ din[15] ^ din[13] ^ din[12] ^ din[10] ^ din[9] ^ din[7];
assign syn[6] = din[70] ^ din[68] ^ din[65] ^ din[62] ^ din[59] ^ din[57] ^ din[55] ^ din[52] ^ din[49] ^ din[47] ^ din[43] ^ din[41] ^ din[39] ^ din[35] ^ din[33] ^ din[30] ^ din[27] ^ din[26] ^ din[22] ^ din[19] ^ din[17] ^ din[15] ^ din[14] ^ din[12] ^ din[10] ^ din[9] ^ din[6];
assign syn[5] = din[71] ^ din[68] ^ din[65] ^ din[63] ^ din[60] ^ din[58] ^ din[54] ^ din[52] ^ din[49] ^ din[46] ^ din[44] ^ din[42] ^ din[38] ^ din[37] ^ din[34] ^ din[30] ^ din[29] ^ din[25] ^ din[22] ^ din[21] ^ din[20] ^ din[15] ^ din[14] ^ din[12] ^ din[11] ^ din[9] ^ din[8] ^ din[5];
assign syn[4] = din[71] ^ din[68] ^ din[66] ^ din[63] ^ din[60] ^ din[57] ^ din[56] ^ din[53] ^ din[50] ^ din[47] ^ din[45] ^ din[41] ^ din[39] ^ din[36] ^ din[33] ^ din[31] ^ din[28] ^ din[25] ^ din[24] ^ din[20] ^ din[18] ^ din[16] ^ din[14] ^ din[12] ^ din[11] ^ din[9] ^ din[4];
assign syn[3] = din[71] ^ din[69] ^ din[66] ^ din[64] ^ din[61] ^ din[58] ^ din[55] ^ din[52] ^ din[50] ^ din[47] ^ din[44] ^ din[42] ^ din[40] ^ din[36] ^ din[35] ^ din[32] ^ din[28] ^ din[26] ^ din[23] ^ din[21] ^ din[19] ^ din[16] ^ din[14] ^ din[13] ^ din[11] ^ din[9] ^ din[8] ^ din[3];
assign syn[2] = din[72] ^ din[69] ^ din[66] ^ din[63] ^ din[61] ^ din[58] ^ din[55] ^ din[53] ^ din[51] ^ din[48] ^ din[45] ^ din[43] ^ din[39] ^ din[38] ^ din[34] ^ din[31] ^ din[29] ^ din[27] ^ din[23] ^ din[22] ^ din[17] ^ din[16] ^ din[14] ^ din[13] ^ din[11] ^ din[10] ^ din[8] ^ din[2];
assign syn[1] = din[72] ^ din[69] ^ din[67] ^ din[64] ^ din[62] ^ din[59] ^ din[56] ^ din[53] ^ din[50] ^ din[48] ^ din[46] ^ din[42] ^ din[40] ^ din[37] ^ din[34] ^ din[33] ^ din[30] ^ din[26] ^ din[24] ^ din[20] ^ din[17] ^ din[16] ^ din[15] ^ din[13] ^ din[11] ^ din[10] ^ din[8] ^ din[1];
assign syn[0] = din[72] ^ din[70] ^ din[67] ^ din[64] ^ din[61] ^ din[59] ^ din[56] ^ din[54] ^ din[51] ^ din[49] ^ din[45] ^ din[43] ^ din[41] ^ din[37] ^ din[35] ^ din[32] ^ din[29] ^ din[28] ^ din[25] ^ din[21] ^ din[18] ^ din[16] ^ din[15] ^ din[13] ^ din[12] ^ din[10] ^ din[8] ^ din[0];
assign dout[72] = din[72] ^ (syn == 8'b00000111);
assign dout[71] = din[71] ^ (syn == 8'b00111000);
assign dout[70] = din[70] ^ (syn == 8'b11000001);
assign dout[69] = din[69] ^ (syn == 8'b00001110);
assign dout[68] = din[68] ^ (syn == 8'b01110000);
assign dout[67] = din[67] ^ (syn == 8'b10000011);
assign dout[66] = din[66] ^ (syn == 8'b00011100);
assign dout[65] = din[65] ^ (syn == 8'b11100000);
assign dout[64] = din[64] ^ (syn == 8'b00001011);
assign dout[63] = din[63] ^ (syn == 8'b00110100);
assign dout[62] = din[62] ^ (syn == 8'b11000010);
assign dout[61] = din[61] ^ (syn == 8'b00001101);
assign dout[60] = din[60] ^ (syn == 8'b10110000);
assign dout[59] = din[59] ^ (syn == 8'b01000011);
assign dout[58] = din[58] ^ (syn == 8'b00101100);
assign dout[57] = din[57] ^ (syn == 8'b11010000);
assign dout[56] = din[56] ^ (syn == 8'b00010011);
assign dout[55] = din[55] ^ (syn == 8'b01001100);
assign dout[54] = din[54] ^ (syn == 8'b10100001);
assign dout[53] = din[53] ^ (syn == 8'b00010110);
assign dout[52] = din[52] ^ (syn == 8'b01101000);
assign dout[51] = din[51] ^ (syn == 8'b10000101);
assign dout[50] = din[50] ^ (syn == 8'b00011010);
assign dout[49] = din[49] ^ (syn == 8'b01100001);
assign dout[48] = din[48] ^ (syn == 8'b10000110);
assign dout[47] = din[47] ^ (syn == 8'b01011000);
assign dout[46] = din[46] ^ (syn == 8'b10100010);
assign dout[45] = din[45] ^ (syn == 8'b00010101);
assign dout[44] = din[44] ^ (syn == 8'b10101000);
assign dout[43] = din[43] ^ (syn == 8'b01000101);
assign dout[42] = din[42] ^ (syn == 8'b00101010);
assign dout[41] = din[41] ^ (syn == 8'b01010001);
assign dout[40] = din[40] ^ (syn == 8'b10001010);
assign dout[39] = din[39] ^ (syn == 8'b01010100);
assign dout[38] = din[38] ^ (syn == 8'b10100100);
assign dout[37] = din[37] ^ (syn == 8'b00100011);
assign dout[36] = din[36] ^ (syn == 8'b10011000);
assign dout[35] = din[35] ^ (syn == 8'b01001001);
assign dout[34] = din[34] ^ (syn == 8'b00100110);
assign dout[33] = din[33] ^ (syn == 8'b01010010);
assign dout[32] = din[32] ^ (syn == 8'b10001001);
assign dout[31] = din[31] ^ (syn == 8'b10010100);
assign dout[30] = din[30] ^ (syn == 8'b01100010);
assign dout[29] = din[29] ^ (syn == 8'b00100101);
assign dout[28] = din[28] ^ (syn == 8'b00011001);
assign dout[27] = din[27] ^ (syn == 8'b11000100);
assign dout[26] = din[26] ^ (syn == 8'b01001010);
assign dout[25] = din[25] ^ (syn == 8'b00110001);
assign dout[24] = din[24] ^ (syn == 8'b10010010);
assign dout[23] = din[23] ^ (syn == 8'b10001100);
assign dout[22] = din[22] ^ (syn == 8'b01100100);
assign dout[21] = din[21] ^ (syn == 8'b00101001);
assign dout[20] = din[20] ^ (syn == 8'b00110010);
assign dout[19] = din[19] ^ (syn == 8'b11001000);
assign dout[18] = din[18] ^ (syn == 8'b10010001);
assign dout[17] = din[17] ^ (syn == 8'b01000110);
assign dout[16] = din[16] ^ (syn == 8'b00011111);
assign dout[15] = din[15] ^ (syn == 8'b11100011);
assign dout[14] = din[14] ^ (syn == 8'b01111100);
assign dout[13] = din[13] ^ (syn == 8'b10001111);
assign dout[12] = din[12] ^ (syn == 8'b11110001);
assign dout[11] = din[11] ^ (syn == 8'b00111110);
assign dout[10] = din[10] ^ (syn == 8'b11000111);
assign dout[9] = din[9] ^ (syn == 8'b11111000);
assign dout[8] = din[8] ^ (syn == 8'b00101111);
assign dout[7] = din[7] ^ (syn == 8'b10000000);
assign dout[6] = din[6] ^ (syn == 8'b01000000);
assign dout[5] = din[5] ^ (syn == 8'b00100000);
assign dout[4] = din[4] ^ (syn == 8'b00010000);
assign dout[3] = din[3] ^ (syn == 8'b00001000);
assign dout[2] = din[2] ^ (syn == 8'b00000100);
assign dout[1] = din[1] ^ (syn == 8'b00000010);
assign dout[0] = din[0] ^ (syn == 8'b00000001);
assign no_error = (syn == 8'b00000000);
assign error = (no_error != 1);
assign corr_error = ( syn == 8'b00000001 || syn == 8'b00000010 || syn == 8'b00000100 || syn == 8'b00001000 || syn == 8'b00010000 || syn == 8'b00100000 || syn == 8'b01000000 || syn == 8'b10000000 || syn == 8'b00101111 || syn == 8'b11111000 || syn == 8'b11000111 || syn == 8'b00111110 || syn == 8'b11110001 || syn == 8'b10001111 || syn == 8'b01111100 || syn == 8'b11100011 || syn == 8'b00011111 || syn == 8'b01000110 || syn == 8'b10010001 || syn == 8'b11001000 || syn == 8'b00110010 || syn == 8'b00101001 || syn == 8'b01100100 || syn == 8'b10001100 || syn == 8'b10010010 || syn == 8'b00110001 || syn == 8'b01001010 || syn == 8'b11000100 || syn == 8'b00011001 || syn == 8'b00100101 || syn == 8'b01100010 || syn == 8'b10010100 || syn == 8'b10001001 || syn == 8'b01010010 || syn == 8'b00100110 || syn == 8'b01001001 || syn == 8'b10011000 || syn == 8'b00100011 || syn == 8'b10100100 || syn == 8'b01010100 || syn == 8'b10001010 || syn == 8'b01010001 || syn == 8'b00101010 || syn == 8'b01000101 || syn == 8'b10101000 || syn == 8'b00010101 || syn == 8'b10100010 || syn == 8'b01011000 || syn == 8'b10000110 || syn == 8'b01100001 || syn == 8'b00011010 || syn == 8'b10000101 || syn == 8'b01101000 || syn == 8'b00010110 || syn == 8'b10100001 || syn == 8'b01001100 || syn == 8'b00010011 || syn == 8'b11010000 || syn == 8'b00101100 || syn == 8'b01000011 || syn == 8'b10110000 || syn == 8'b00001101 || syn == 8'b11000010 || syn == 8'b00110100 || syn == 8'b00001011 || syn == 8'b11100000 || syn == 8'b00011100 || syn == 8'b10000011 || syn == 8'b01110000 || syn == 8'b00001110 || syn == 8'b11000001 || syn == 8'b00111000 || syn == 8'b00000111);
assign uncorr_error = (corr_error!=1 && no_error!=1);
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