////////////////////////////////////////////////////////////////////////////////// *****************************************************************************// *  RICHIC CONFIDENTIAL PROPRIETARY NOTE                                     *// *                                                                           *// *  This software contains information confidential and proprietary to       *// *  RicHic Inc.It shall not be reproduced in whole or in part or transferred *// *  to other documents, or disclosed to third parties, or used for any       *// *  purpose other than that for which it was obtained, without the prior     *// *  written consent of RicHic Inc.                                           *// *             (c) 2003, 2004, 2005 RicHic Inc.                              *// *                All rights reserved                                        * /* ******************************************************************************                                                                              * *       更多精彩內容：http://www.richic.com                                    **                                                                              **   1、本程序由瑞芯科技 邏輯設計部提供                                         **   2、本程序在瑞芯科技 FPGA開發系統中驗證通過                                 **   3、瑞芯科技網站提供更多參考設計，以提高朋友們的設計水平,請訪問我們的網站   **   4、瑞芯科技歡迎朋友們提供精彩設計                                          **                                                                              **    (C) 2004 fpga_ic@richic.com;                                              **         http://www.richic.com                                                **                                                                              ********************************************************************************/module hex2led_common_cathode (hex, led) ;input   [3:0] hex;output  [6:0] led;reg     [6:0] led;//hex-to-seven-segment decoder//// segment encoding//      0//     ---  //  5 |   | 1//     ---   <- 6//  4 |   | 2//     ---//      3always @(hex)begin    case (hex)                  //數值 共陰極段碼  	4'b0001 : led = 7'b0000110;	//1   06       	4'b0010 : led = 7'b1011011;	//2   5B	4'b0011 : led = 7'b1001111;	//3   4F	4'b0100 : led = 7'b1100110;	//4   66	4'b0101 : led = 7'b1101101;	//5   6D	4'b0110 : led = 7'b1111101;	//6   7D	4'b0111 : led = 7'b0000111;	//7   07	4'b1000 : led = 7'b1111111;	//8   7F	4'b1001 : led = 7'b1101111;	//9   6F	4'b1010 : led = 7'b1110111;	//A   77	4'b1011 : led = 7'b1111100;	//b   7C	4'b1100 : led = 7'b0111001;	//C   39	4'b1101 : led = 7'b1011110;	//d   5E	4'b1110 : led = 7'b1111001;	//E   79	4'b1111 : led = 7'b1110001;	//F   71	default : led = 7'b0111111;	//0   3F    endcaseendendmodule