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Modelsim是一款仿真软件,可对VHDL 和Verilog HDL两种语言进行混合仿真。
前仿真:功能仿真,不考虑门电路延时与线延时,主要是验证电路与理想情况是否一致。
后仿真: 时序仿真(布线后仿真),电路在实际应用中的工作仿真,考虑门电路延时与线延时,能反映芯片的实际工作情况。
打开Quartus II 软件
关联modlesim软件
配置工程仿真软件
现在Quartus II 和Modelsim 软件已经关联在一起了。
生成后的vt文件:
修改后
- // Copyright (C) 1991-2013 Altera Corporation
- // Your use of Altera Corporation's design tools, logic functions
- // and other software and tools, and its AMPP partner logic
- // functions, and any output files from any of the foregoing
- // (including device programming or simulation files), and any
- // associated documentation or information are expressly subject
- // to the terms and conditions of the Altera Program License
- // Subscription Agreement, Altera MegaCore Function License
- // Agreement, or other applicable license agreement, including,
- // without limitation, that your use is for the sole purpose of
- // programming logic devices manufactured by Altera and sold by
- // Altera or its authorized distributors. Please refer to the
- // applicable agreement for further details.
-
- // *****************************************************************************
- // This file contains a Verilog test bench template that is freely editable to
- // suit user's needs .Comments are provided in each section to help the user
- // fill out necessary details.
- // *****************************************************************************
- // Generated on "02/10/2022 09:24:50"
-
- // Verilog Test Bench template for design : emg_fpga_top
- //
- // Simulation tool : ModelSim (Verilog)
- //
-
- `timescale 1 ns/ 1 ns
- module emg_fpga_top_vlg_tst();
- // constants
- // general purpose registers
- //reg eachvec; 没用的信号
- // test vector input registers
- reg Ads_irq_8;
- reg SPI_miso;
- reg Start_data_flag;
- reg sys_clk;
- reg sys_rst_n;
- // wires
- wire SPI_cs_n;
- wire SPI_mosi;
- wire SPI_sck;
- wire led_b;
- wire led_g;
- wire led_r;
- wire uart_txd;
-
- // assign statements (if any)
- emg_fpga_top i1 (
- // port map - connection between master ports and signals/registers
- .Ads_irq_8(Ads_irq_8),
- .SPI_cs_n(SPI_cs_n),
- .SPI_miso(SPI_miso),
- .SPI_mosi(SPI_mosi),
- .SPI_sck(SPI_sck),
- .Start_data_flag(Start_data_flag),
- .led_b(led_b),
- .led_g(led_g),
- .led_r(led_r),
- .sys_clk(sys_clk),
- .sys_rst_n(sys_rst_n),
- .uart_txd(uart_txd)
- );
- initial begin //付初值
- sys_clk=1'b0; //系统时钟付初值
- sys_rst_n=1'b0; //复位信号付初值
- #100 sys_rst_n=1'b1;//延时100ns,把复位信号拉高
-
- #1000 $stop; //程序仿真时运行1000ns,停止仿真
- end
-
- //产生时钟翻转信号
- always #10 sys_clk=~sys_clk;//系统时钟是50mhz,周期是20ns,那么就是没10ns,时钟翻转一次
-
- endmodule
-

接下来就可以仿真了
这里我选择功能仿真,modelsim软件会自动打开进入这个界面
这里我选择时序仿真,modelsim软件会自动打开进入这个界面
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