题解 | #含有无关项的序列检测#
含有无关项的序列检测
https://www.nowcoder.com/practice/cba67d06d6834a5d9b93e1087b56c8d8
`timescale 1ns/1ns
module sequence_detect(
input clk,
input rst_n,
input a,
output reg match
);
reg [8:0] a_tmp;
always@(posedge clk, negedge rst_n)begin
if(!rst_n)begin
a_tmp <= 9'd0;
match <= 1'b0;
end
else begin
a_tmp <= {a_tmp[7:0], a};
match <= (a_tmp[8:6] == 3'b011 && a_tmp[2:0] == 3'b110);
end
end
endmodule
