题解 | #输入序列连续的序列检测#
输入序列连续的序列检测
http://www.nowcoder.com/practice/d65c2204fae944d2a6d9a3b32aa37b39
`timescale 1ns/1ns
module sequence_detect(
input clk,
input rst_n,
input a,
output reg match
);
reg [7:0] a_reg;
always @(posedge clk or negedge rst_n) begin
if(!rst_n) a_reg <= 'b0;
else a_reg <= {a_reg[6:0],a};
end
always @(posedge clk or negedge rst_n) begin
if(!rst_n) match <= 'b0;
else if(a_reg==8'b01110001) match <= 1;
else match <= 0;
end
endmodule
module sequence_detect(
input clk,
input rst_n,
input a,
output reg match
);
reg [7:0] a_reg;
always @(posedge clk or negedge rst_n) begin
if(!rst_n) a_reg <= 'b0;
else a_reg <= {a_reg[6:0],a};
end
always @(posedge clk or negedge rst_n) begin
if(!rst_n) match <= 'b0;
else if(a_reg==8'b01110001) match <= 1;
else match <= 0;
end
endmodule