题解 | 优先编码器电路①
优先编码器电路①
https://www.nowcoder.com/practice/0594ed5303ad48a19aed90bc48839d00
`timescale 1ns/1ns module encoder_0( input [8:0] I_n , output reg [3:0] Y_n ); always@(*)begin casex({I_n[0],I_n[1],I_n[2],I_n[3],I_n[4],I_n[5],I_n[6],I_n[7],I_n[8]}) 9'b1111_1111_1: Y_n <= 4'b1111; 9'bxxxx_xxxx_0: Y_n <= 4'b0110; 9'bxxxx_xxx0_1: Y_n <= 4'b0111; 9'bxxxx_xx01_1: Y_n <= 4'b1000; 9'bxxxx_x011_1: Y_n <= 4'b1001; 9'bxxxx_0111_1: Y_n <= 4'b1010; 9'bxxx0_1111_1: Y_n <= 4'b1011; 9'bxx01_1111_1: Y_n <= 4'b1100; 9'bx011_1111_1: Y_n <= 4'b1101; 9'b0111_1111_1: Y_n <= 4'b1110; endcase end endmodule