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
);
// 011xxx110&111000111=011000110
//
reg [7:0] a_ray;
always @(posedge clk or negedge rst_n) begin
if (!rst_n) begin
a_ray <= 0;
match <= 0;
end
else begin
a_ray <= {a_ray[6:0],a};
if ((a_ray&8'b111000111)==8'b011000110) begin
match <= 1;
end
else match <= 0;
end
end
endmodule
使用按位与来将需要的位继承下来，不需要的位转为0.
投递美团等公司8个岗位