在FPGA上手动设计和实现专用微处理器来输入一个8位值,然后确定输入值是否具有相等的0位和1位数。如果输入值具有相同的 0 和 1 数,则微处理器输出 1;否则,它将输出 0。例如,数字10111011将产生 0 输出;而数字00110011将产生 1 输出。分别给出顶层模块,数据通路和FSM的Verilog代码,不要使用循环变量声明和int
时间: 2024-02-25 10:56:40 浏览: 45
顶层模块代码:
```verilog
module top (
input clk,
input rst,
input [7:0] data,
output reg out
);
wire [7:0] data;
wire equal;
// instantiate datapath and control unit
datapath dp(
.clk(clk),
.rst(rst),
.data(data),
.equal(equal)
);
control_unit cu(
.clk(clk),
.rst(rst),
.data(data),
.equal(equal),
.out(out)
);
endmodule
```
数据通路代码:
```verilog
module datapath (
input clk,
input rst,
input [7:0] data,
output reg [7:0] reg_data,
output reg equal
);
always @(posedge clk) begin
if (rst) begin
reg_data <= 8'b0;
equal <= 1'b0;
end else begin
reg_data <= data;
equal <= (reg_data & 8'hf0) == ((~reg_data) & 8'hf0);
end
end
endmodule
```
FSM代码:
```verilog
module control_unit (
input clk,
input rst,
input [7:0] data,
input equal,
output reg out
);
typedef enum logic [2:0] {
S_IDLE,
S_CHECK,
S_OUTPUT
} state_t;
reg [2:0] state;
reg [1:0] count;
always @(posedge clk) begin
if (rst) begin
state <= S_IDLE;
count <= 2'b0;
out <= 1'b0;
end else begin
case (state)
S_IDLE: begin
count <= 2'b0;
if (data != 8'b0) begin
state <= S_CHECK;
end
end
S_CHECK: begin
count <= count + 1;
if (count == 2'b11) begin
if (equal) begin
state <= S_OUTPUT;
end else begin
state <= S_IDLE;
end
count <= 2'b0;
end
end
S_OUTPUT: begin
out <= 1'b1;
state <= S_IDLE;
count <= 2'b0;
end
endcase
end
end
endmodule
```