单周期mips cpu设计verilog模块详细代码
时间: 2023-07-29 20:07:04 浏览: 122
抱歉,我无法提供完整的单周期MIPS CPU设计的Verilog代码,因为这需要相当多的时间和努力才能完成。但是,我可以给您一些参考,让您开始编写代码。
以下是单周期MIPS CPU设计的一些基本模块,以及它们的Verilog代码:
1. 控制单元模块:
```
module control_unit (
input [5:0] opcode,
output reg [3:0] ALU_op,
output reg [1:0] reg_dest,
output reg Reg_write,
output reg Mem_write,
output reg Mem_read,
output reg Branch,
output reg Jump
);
always @(*) begin
case (opcode)
6'b000000: begin
ALU_op = 4'b0010;
reg_dest = 2'b10;
Reg_write = 1'b1;
Mem_write = 1'b0;
Mem_read = 1'b0;
Branch = 1'b0;
Jump = 1'b0;
end
6'b001000: begin
ALU_op = 4'b0000;
reg_dest = 2'b10;
Reg_write = 1'b1;
Mem_write = 1'b0;
Mem_read = 1'b0;
Branch = 1'b0;
Jump = 1'b0;
end
6'b001101: begin
ALU_op = 4'b0110;
reg_dest = 2'b10;
Reg_write = 1'b1;
Mem_write = 1'b0;
Mem_read = 1'b0;
Branch = 1'b0;
Jump = 1'b0;
end
// Add more cases here
endcase
end
endmodule
```
2. 寄存器文件模块:
```
module reg_file (
input [4:0] read_reg1,
input [4:0] read_reg2,
input [4:0] write_reg,
input [31:0] write_data,
input Reg_write,
output reg [31:0] read_data1,
output reg [31:0] read_data2
);
reg [31:0] reg [31:0];
always @(*) begin
if (Reg_write) begin
reg[write_reg] = write_data;
end
read_data1 = reg[read_reg1];
read_data2 = reg[read_reg2];
end
endmodule
```
3. ALU模块:
```
module ALU (
input [31:0] operand1,
input [31:0] operand2,
input [3:0] ALU_op,
output reg [31:0] result
);
always @(*) begin
case (ALU_op)
4'b0000: result = operand1 + operand2;
4'b0010: result = operand1 - operand2;
4'b0100: result = operand1 & operand2;
4'b0101: result = operand1 | operand2;
4'b0110: result = operand1 < operand2 ? 32'b1 : 32'b0;
// Add more cases here
endcase
end
endmodule
```
4. 存储器模块:
```
module memory (
input [31:0] address,
input [31:0] write_data,
input Mem_write,
input Mem_read,
output reg [31:0] read_data
);
reg [31:0] mem [1023:0];
always @(*) begin
if (Mem_write) begin
mem[address[9:2]] = write_data;
end
if (Mem_read) begin
read_data = mem[address[9:2]];
end
end
endmodule
```
5. CPU顶层模块:
```
module CPU (
input CLK,
input RST,
input [31:0] instruction,
output reg [31:0] result
);
reg [31:0] PC;
reg [31:0] instruction;
reg [31:0] operand1;
reg [31:0] operand2;
reg [31:0] write_data;
reg [4:0] read_reg1;
reg [4:0] read_reg2;
reg [4:0] write_reg;
reg [5:0] opcode;
reg [3:0] ALU_op;
reg [1:0] reg_dest;
reg Reg_write;
reg Mem_write;
reg Mem_read;
reg Branch;
reg Jump;
wire [31:0] read_data1;
wire [31:0] read_data2;
wire [31:0] read_data;
control_unit CU(opcode, ALU_op, reg_dest, Reg_write, Mem_write, Mem_read, Branch, Jump);
reg_file RF(read_reg1, read_reg2, write_reg, write_data, Reg_write, read_data1, read_data2);
ALU ALU(operand1, operand2, ALU_op, result);
memory MEM(read_data, write_data, Mem_write, Mem_read);
always @(posedge CLK) begin
if (RST) begin
PC <= 32'b0;
instruction <= 32'b0;
operand1 <= 32'b0;
operand2 <= 32'b0;
write_data <= 32'b0;
read_reg1 <= 5'b0;
read_reg2 <= 5'b0;
write_reg <= 5'b0;
opcode <= 6'b0;
ALU_op <= 4'b0;
reg_dest <= 2'b0;
Reg_write <= 1'b0;
Mem_write <= 1'b0;
Mem_read <= 1'b0;
Branch <= 1'b0;
Jump <= 1'b0;
end else begin
instruction <= MEM.read_data;
opcode <= instruction[31:26];
read_reg1 <= instruction[25:21];
read_reg2 <= instruction[20:16];
write_reg <= instruction[15:11];
operand1 <= RF.read_data1;
operand2 <= RF.read_data2;
write_data <= operand2;
case (CU.reg_dest)
2'b00: write_data <= ALU.result;
2'b01: write_data <= operand2;
2'b10: write_data <= PC + 4;
2'b11: write_data <= {16'b0, instruction[15:0]};
endcase
if (CU.Branch && ALU.result) begin
PC <= PC + {16'b0, instruction[15:0], 2'b0};
end else if (CU.Jump) begin
PC <= {PC[31:28], instruction[25:0], 2'b0};
end else begin
PC <= PC + 4;
end
end
end
endmodule
```
请注意,这些代码只是基本的模块,您需要根据您的具体需求进行修改和扩展。此外,这里的代码仅用于教育目的,不保证其准确性和完整性。
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