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verilog怎么写testbench

1.Verilog键盘扫描程序的testbench怎么写

modulemul3_testbench；//定义一个没有输入输出端口的测试平台rega2,a1,a0,b2,b1,b0；//被测模块的input端口，改为对应的reg寄存器做输入信号wirep5,p4,p3,p2,p1,p0；//被测模块的output端口，改为对应的wire型initialbegin//初始化所有输入信号的寄存器值a2=0;a1=0;a0=0;b2=0;b1=0;b0=0;#50//一般延迟较长时间后，应该使复位信号不复位系统正常工作，但你没有复位信号end//初始化模块结束后一般时序电路仿真是产生时钟信号，//这是纯组合逻辑没有时钟信号就省略了//然后就可以根据你所需要验证的功能在此位置编写initial块或always块给reg型//的输入信号赋值的相关逻辑，观察wire型输入信号的值//---------------------------调用被测对象，格式如一般元件调用-------------------mul3DUT(.a2(a2),.a1(a2),.a0(a0),.b2(b2),.b1(b2),.b0(b0),.p5(p5),.p4(p4),.p3(p3),.p2(p2),.p1(p1),.p0(p0));endmodule//最后的提示，你的程序里定义了整数型变量，其实是不好的用法，甚至不能被正确综合，//可以用等值的reg型变量来替代，即使你定义成整数型，实际上也是被综合成reg型的，//另外，一般可综合代码中最好不要用for语句，个人认为你的代码会完全功能不正常的。

2.Verilog键盘扫描程序的testbench怎么写

3.verilog中怎么新建一个testbench

timescale 1ns/100psmodule testbench;localparam DATA_WIDTH = 32;localparam CLK_100_PERIOD = 5;localparam CLK_200_PERIOD = 2.5;localparam SIM_TIME = 150000;localparam ;localparam ;reg clk_100, clk_200;wire clk;assign clk = clk_100;alwaysbeginclk_100 = 0;forever #CLK_100_PERIOD clk_100 = ~clk_100;endalwaysbeginclk_200 = 0;forever #CLK_200_PERIOD clk_200 = ~clk_200;endreg rstn;integer fp_testin;integer fp_matlab_out;integer fp_sim_out;integer fp_outdiff;reg signed [DATA_WIDTH/2-1:0] matlab_in_re, matlab_in_im;reg signed [DATA_WIDTH/2-1:0] matlab_out_re, matlab_out_im;reg signed [DATA_WIDTH/2-1:0] matlab_diff_re, matlab_diff_im;reg signed [DATA_WIDTH/2-1:0] matlab_diff_re2, matlab_diff_im2;reg signed [DATA_WIDTH/2-1:0] max_diff_re, max_diff_im;initial beginmax_diff_re = 0;max_diff_im = 0;rstn = 0;#500rstn = 1;#SIM_TIMEsim_finish();$stop();endtask sim_finish;beginif(fp_testin!=0)$fclose(fp_testin);if(fp_matlab_out!=0)$fclose(fp_matlab_out);if(fp_sim_out)$fclose(fp_sim_out);if(fp_outdiff!=0)$fclose(fp_outdiff);endendtaskinitialbeginfp_testin = 0;fp_testin= $fopen("txt_file/input_data.txt","r");if(fp_testin==0)begin$display("input_data.txt open failed!");sim_finish();$stop();endelse begin$fscanf(fp_testin, "%d, %d\n",matlab_in_re,matlab_in_im);endfp_matlab_out = 0;fp_matlab_out = $fopen("txt_file/matlab_out.txt","r");if(fp_matlab_out==0)begin$display("fp_matlab_out.txt open failed!");sim_finish();$stop();endelse begin$fscanf(fp_matlab_out,"%d, %d\n",matlab_out_re,matlab_out_im);endfp_sim_out = 0;fp_sim_out = $fopen("txt_file/modelsim_out.txt","w");if(fp_sim_out == 0)begin$display("modelsim_out_re.txt open failed!");sim_finish();$stop();endfp_outdiff = 0;fp_outdiff = $fopen("text_file/outdiff.txt","w");if(fp_outdiff==0)begin$display("outdiff.txt open failed!");sim_finish();$stop();endendalways @(posedge clk)beginif(stest_wvalid && stest_wready) //ready to changebeginif(~$feof(fp_testin))$fscanf(fp_testin, "%d, %d\n",matlab_in_re,matlab_in_im);endelsebeginmatlab_in_re <= matlab_in_re;matlab_in_im <= matlab_in_im;endendalways @(posedge clk_100)beginif(mfc_wready && mfc_wvalid)beginmatlab_diff_re <= mfc_wdata_re - matlab_out_re;matlab_diff_im <= mfc_wdata_im - matlab_out_im;matlab_diff_re2 <= matlab_out_re - mfc_wdata_re ;matlab_diff_im2 <= matlab_out_im - mfc_wdata_im ;if(max_diff_re < matlab_diff_re)beginmax_diff_re <= matlab_diff_re;$display("max_diff_re:%d max_diff_im:%d\n",max_diff_re,max_diff_im);endelse if(max_diff_re < matlab_diff_re2)beginmax_diff_re <= matlab_diff_re2;$display("max_diff_re:%d max_diff_im:%d\n",max_diff_re,max_diff_im);endif(max_diff_im < matlab_diff_im)beginmax_diff_im <= matlab_diff_im;$display("max_diff_re:%d max_diff_im:%d\n",max_diff_re,max_diff_im);endelse if(max_diff_im < matlab_diff_im2)beginmax_diff_im <= matlab_diff_im2;$display("max_diff_re:%d max_diff_im:%d\n",max_diff_re,max_diff_im);end$fscanf(fp_matlab_out,"%d, %d\n",matlab_out_re,matlab_out_im);$fwrite(fp_sim_out, "%d, %d\n", mfc_wdata_re,mfc_wdata_im);$fwrite(fp_outdiff, "%d, %d\n",matlab_diff_re,matlab_diff_im);endendendmodule。

4.求用Verilog写个对应的testbench,指令寄存器的testbench

`timescale 1ns/1ps

module reg_tb;

reg [7:0] data_i;

reg ena_i;

reg clk;

reg rst_n;

reg [7:0] cnt;

wire [15:0]opc_iraddr_o;

.clk ( clk ),

.rst ( ~rst_n ),

.data ( data_i ),

.ena ( ena_i ),

.opc_iraddr ( opc_iraddr_o )

);

initial

begin

clk = 0;

rst = 0;

ena_i = 0;

cnt = 0;

data_i = 0;

#50

rst_n = 1;

end

always #5 clk = ~clk;

always @( posedge clk or negedge rst_n )begin

if( !rst_n )

cnt

5.verilog中怎么新建一个testbench

`timescale 1ns / 1ps

module tb_dff_s();

reg pi;

reg si;

reg shiftdr;

reg clockdr;

reg updatadr;

reg mode;

wire so;

wire po;

always begin

clockdr = 1'b0;

#5 clockdr = ~clockdr;

#5;

end

always begin

updatadr = 1'b0;

#5 updatadr = ~updatadr;

#5;

end

dff_s uut_dff_s

(

so,

po,

si,

pi,

shiftdr,

mode,

clockdr,

updatadr

);

initial begin

pi = 1'b0;

si = 1'b1;

shiftdr = 1'b0;

mode = 1'b0;

#40;

shiftdr = 1'b1;

#40;

mode = 1'b1;

#40;

pi = 1'b1;

si = 1'b0;

#40;

shiftdr = 1'b0;

#40;

mode = 1'b0;

end

endmodule

6.verilog做38译码器的testbench文件怎么写

你好，2113我写5261了一个例子4102你看1653看好了版。

module tb();reg [2:0] inputD;wire reset; wire clk;wire [7:0] result; initial begin clk =0; clk = #5 ~权clk; endinitial begin reset =0; #20; reset =1; end always @(posedge clk) if reset ==1 begin inputD =3'b000; end else inputD = inputD +1;decode_38 decode_38 (.code(inputD), .result(result));endmodule。

verilog怎么写testbench