用verilog语言实现16位全加器和16位全加器的testbench
时间: 2023-11-21 09:05:17 浏览: 198
下面是16位全加器的Verilog代码和对应的testbench:
16位全加器代码:
```verilog
module full_adder_16bit(A, B, Cin, Sum, Cout);
input [15:0] A, B;
input Cin;
output reg [15:0] Sum;
output reg Cout;
reg [15:0] temp_sum;
always @ (A or B or Cin) begin
temp_sum = A + B + Cin;
Sum = temp_sum;
Cout = temp_sum[16];
end
endmodule
```
16位全加器testbench代码:
```verilog
module full_adder_16bit_tb();
reg [15:0] A, B;
reg Cin;
wire [15:0] Sum;
wire Cout;
full_adder_16bit uut(.A(A), .B(B), .Cin(Cin), .Sum(Sum), .Cout(Cout));
initial begin
A = 16'h1234;
B = 16'h5678;
Cin = 1'b0;
#10;
A = 16'hFFFF;
B = 16'hFFFF;
Cin = 1'b1;
#10;
A = 16'h0000;
B = 16'h0000;
Cin = 1'b1;
#10;
$finish;
end
always @(A or B or Cin) begin
$display("A = %04h, B = %04h, Cin = %b, Sum = %04h, Cout = %b", A, B, Cin, Sum, Cout);
end
endmodule
```
在testbench中,我们将A和B设置为16位的16进制数,Cin设置为1位二进制数。然后,我们通过改变输入信号来测试full_adder_16bit模块的行为,并使用$display语句来打印每个输入组合对应的输出值。
阅读全文