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_reg;
always@(posedge clk or negedge rst_n)
if(!rst_n)begin
a_reg <= 'd0;
end
else begin
a_reg <= {a_reg[7:0],a};
end
always@(posedge clk or negedge rst_n)
if(!rst_n)begin
match <= 'd0;
end
else if((a_reg[8:6]==3'b011)&&(a_reg[2:0]==3'b110))begin
match <= 1'b1;
end
else begin
match <= 1'b0;
end
endmodule
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