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] data;
always @(posedge clk or negedge rst_n) begin
if (!rst_n) begin
data <= 0;
end
else begin
data <= {a,data[8:1]};
end
end
always @(posedge clk or negedge rst_n) begin
if(!rst_n) begin
match <= 0;
end
else if ((data[8:6]== 3'b011) & (data[2:0] == 3'b110)) begin
match <= 1;
end
else begin
match <= 0;
end
end
endmodule
