// 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. ///////////////////////////////////////////////////////////////////////////// // baeckler - 03-07-2006 // the state // (msb) A B C D E F G H I J K L M N O P (lsb) // // shown as a grid : // // AEIM // BFJN // CGKO // DHLP // // Needs to be shifted to produce : // // AEIM // FJNB // KOCG // PDHL // module shift_rows (in,out); input [16*8-1 : 0] in; output [16*8-1 : 0] out; wire [16*8-1 : 0] out; assign out = { in[127:120],in[87:80],in[47:40],in[7:0], in[95:88],in[55:48],in[15:8],in[103:96], in[63:56],in[23:16],in[111:104],in[71:64], in[31:24],in[119:112],in[79:72],in[39:32] }; endmodule module inv_shift_rows (in,out); input [16*8-1 : 0] in; output [16*8-1 : 0] out; wire [16*8-1 : 0] out; assign out = { in[127:120],in[23:16],in[47:40],in[71:64], in[95:88],in[119:112],in[15:8],in[39:32], in[63:56],in[87:80],in[111:104],in[7:0], in[31:24],in[55:48],in[79:72],in[103:96] }; endmodule