// 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. ///////////////////////////////////////////////////////////////////////////// module equal_const (dat,out); parameter WIDTH = 8; parameter CONST_VAL = 8'h45; parameter METHOD = 0; input [WIDTH-1:0] dat; output out; wire out; generate if (METHOD == 0) begin /////////////////////// // Generic style /////////////////////// assign out = (dat == CONST_VAL); end else if (METHOD == 1) begin //////////////////////////////////////// // Carry chain based - 3 bits per cell //////////////////////////////////////// carry_and ca (.dat(~dat ^ CONST_VAL),.out(out)); defparam ca .WIDTH = WIDTH; defparam ca .METHOD = 4; end endgenerate endmodule