用Verilog实现 0、1、8、16、9、2、3、10、17、24、32、25、18、11、4、5、12、19、26 禁止使用遍历
时间: 2023-09-18 14:05:42 浏览: 35
以下是使用状态机实现的Verilog代码:
```verilog
module forbidden_sequence_detector(
input clk,
input reset,
input data,
output reg detect
);
enum {START, S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S13, S14, S15, S16, S17, S18} state;
initial
begin
state = START;
detect = 0;
end
always @(posedge clk)
begin
if (reset)
begin
state = START;
detect = 0;
end
else
begin
case(state)
START:
begin
if (data == 0)
state = S0;
else if (data == 1)
state = S1;
else if (data == 2)
state = S2;
else if (data == 3)
state = S3;
else if (data == 4)
state = S4;
else if (data == 5)
state = S5;
else if (data == 8)
state = S6;
else
state = START;
end
S0:
begin
if (data == 1)
state = S1;
else
state = START;
end
S1:
begin
if (data == 8)
state = S6;
else if (data == 2)
state = S2;
else
state = START;
end
S2:
begin
if (data == 3)
state = S3;
else
state = START;
end
S3:
begin
if (data == 10)
state = S7;
else if (data == 4)
state = S4;
else
state = START;
end
S4:
begin
if (data == 5)
state = S5;
else
state = START;
end
S5:
begin
if (data == 12)
state = S8;
else if (data == 19)
state = S15;
else
state = START;
end
S6:
begin
if (data == 16)
state = S11;
else
state = START;
end
S7:
begin
if (data == 17)
state = S12;
else
state = START;
end
S8:
begin
if (data == 18)
state = S13;
else
state = START;
end
S11:
begin
if (data == 9)
state = S9;
else
state = START;
end
S9:
begin
if (data == 2)
state = S2;
else
state = START;
end
S12:
begin
if (data == 24)
state = S16;
else
state = START;
end
S13:
begin
if (data == 11)
state = S10;
else
state = START;
end
S10:
begin
if (data == 4)
state = S4;
else
state = START;
end
S15:
begin
if (data == 26)
state = S18;
else
state = START;
end
S16:
begin
if (data == 32)
state = S17;
else
state = START;
end
S17:
begin
if (data == 25)
state = S14;
else
state = START;
end
S18:
begin
detect = 1;
state = START;
end
default:
begin
state = START;
end
endcase
end
end
endmodule
```
该代码使用状态机实现,对于每个输入数据,根据当前状态进行状态转移。如果检测到数字序列,输出信号detect会被置为1。