1 /********************************************************************************* 2 * Company : 3 * Engineer : 空气微凉 4 * 5 * Create Date : 00:00:00 22/03/2013 6 * Design Name : 7 * Module Name : 8 * Project Name : 9 * Target Devices : 10 * Tool versions : 11 * Description : 12 * http://www.cnblogs.com/kongqiweiliang/ 13 * Dependencies : 14 * 15 * Revision : 16 * Revision : 0.01 - File Created 17 * Additional Comments : 基础实验_06_优先译码器 ：优先译码器 18 ********************************************************************************/ 19 `timescale 1ns/1ps 20 `define UD #1 21 /*******************************************************************************/ 22 module DECODE_PRIORITY 23 ( 24 //Interface package 25 input [7:0] iCODE ,//50MHz 26 output reg [7:0] oDAT //system interface 27 ); 28 //------------------------------------------------------------------------------- 29 always@(*)begin 30 if(iCODE[7]) oDAT = 8'b1000_0000; 31 else if(iCODE[6]) oDAT = 8'b0100_0000; 32 else if(iCODE[5]) oDAT = 8'b0010_0000; 33 else if(iCODE[4]) oDAT = 8'b0001_0000; 34 else if(iCODE[3]) oDAT = 8'b0000_1000; 35 else if(iCODE[2]) oDAT = 8'b0000_0100; 36 else if(iCODE[1]) oDAT = 8'b0000_0010; 37 else if(iCODE[0]) oDAT = 8'b0000_0001; 38 else oDAT = 8'bz; 39 end 40 //------------------------------------------------------------------------------- 41 endmodule