生成verilog实现链表的代码
时间: 2023-05-24 13:04:49 浏览: 400
以下是一个简单的单向链表的Verilog代码实现:
```
module LinkedList(
input clk,
input reset,
input [31:0]data_in,
input add_node_enable,
input del_node_enable,
input [31:0]del_node_data,
output reg [31:0]data_out
);
// 定义链表结点的数据类型
reg [31:0]data;
reg [31:0]next_node_address;
// 定义链表头结点的地址
reg [31:0]head_address;
// 定义链表的最大长度
parameter MAX_LENGTH = 10;
// 定义链表的内存
reg [31:0]mem [0:MAX_LENGTH-1];
// 初始化链表的头结点地址和内存
initial begin
head_address = 0;
for (int i=0; i<MAX_LENGTH; i=i+1) begin
mem[i] = 0;
end
end
// 添加结点的逻辑
always @(posedge clk) begin
if (reset) begin
// 在复位信号下清空链表
head_address = 0;
for (int i=0; i<MAX_LENGTH; i=i+1) begin
mem[i] = 0;
end
end else if (add_node_enable) begin
// 查找链表的最后一个结点并添加新结点
if (head_address == 0) begin
head_address = 1;
mem[0] = data_in;
end else begin
int current_address = head_address;
int next_address = mem[current_address-1];
while (next_address != 0) begin
current_address = next_address;
next_address = mem[current_address-1];
end
int new_address = current_address + 1;
mem[new_address-1] = data_in;
mem[current_address-1] = new_address;
end
end
end
// 删除结点的逻辑
always @(posedge clk) begin
if (reset) begin
// 在复位信号下清空链表
head_address = 0;
for (int i=0; i<MAX_LENGTH; i=i+1) begin
mem[i] = 0;
end
end else if (del_node_enable) begin
// 查找要删除的结点并重新链接链表
int current_address = head_address;
int prev_address = 0;
int next_address = mem[current_address-1];
while (current_address != 0) begin
if (mem[current_address-1] == del_node_data) begin
if (prev_address == 0) begin
head_address = next_address;
end else begin
mem[prev_address-1] = next_address;
end
mem[current_address-1] = 0;
break;
end
prev_address = current_address;
current_address = next_address;
next_address = mem[current_address-1];
end
end
end
// 读取结点的逻辑
always @(posedge clk) begin
if (reset) begin
// 在复位信号下清空链表
head_address = 0;
for (int i=0; i<MAX_LENGTH; i=i+1) begin
mem[i] = 0;
end
end else begin
// 读取头结点的数据
data_out = mem[head_address-1];
// 更新头结点的地址
head_address = mem[head_address-1];
end
end
endmodule
```
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