vhdl testbench的编写，textio的编写是一个难点，也是一个重点，而这是本人搜集的多篇关于textio的文章，同时附有简单注释!...

课程设计要求设计并用FPGA实现一个数字频率计，具体设计要求如下： 测量频率范围： 10Hz～100KHz 精度： ΔF / F ≤ ±2 % 系统外部时钟： 1024Hz 测量波形： 方波 Vp-p ＝ 3～5 V 硬件设备：Altera Flex10K10 五位数码管 LED发光二极管 编程语言：Verilog HDL / VHDL-curriculum design and FPGA design to achieve a digital frequency meter, the specific design requirements are as follows : measurement frequency range : 10Hz to 100KHz precision : F/F 2% external clock system : 1024Hz Waveform Measurement : square Vp-p = 3 ~ 5 V hardware : Altera Flex10K10 five digital LED light emitting diode programming languages : Verilog HDL/VHDL

VHDL硬件描述语言与数字逻辑电路设计,学习VHDL的好资料-VHDL hardware description language and digital logic circuit design, VHDL learning good information

通信控制中常用的脉冲宽度检测程序，VHDL模块化编成实现（原创）(communication control used in pulse width detection procedures, VHDL modular organization to achieve (original))

ise13.2环境下VHDL编写的半加器器+仿真波形(ise13.2 environment half adder in VHDL simulation waveform control+)

说明：  30 bus for atp design

十六进制计数器递增 ALTERA FPGA 板 7 段显示器上的每一秒。

自己写的一个使用单片机配置FPGA的下位机C代码，使用一个C8051F330,外置SPI FLASH,通过串口可将程序写入FLASH,上电时自动加载到FPGA完成配置。(Wrote it myself, using a microcontroller to configure FPGA code for the next bit plane C, using a C8051F330, external SPI FLASH, the program is written through the serial port can be FLASH, power-on automatically loaded into the FPGA to complete the configuration.)

硬件设计vhdl_cpu1,1. You may copy and distribute verbatim copies of this core, as long -- as this file, and the other associated files, remain intact and -- unmodified. Modifications are outlined below.-hardware design vhdl_cpu1, 1. You may copy and distribute verbatim copies of this core, as long-- as this file, and the other associated files, remain intact and-- unmodified. Modifications are outlined below.

是我们在在实验室做的摸60计数，并用LED显示出来。-is done in the laboratory in the loss of 60 counts, and LED show.

i2c总线的工程实现，可以用在altera环境下验证-i2c bus project implementation can be used in altera verification environment