IIC总线协议，VHDL语言编写，可以直接使用

CPLD下载线制作，内含电路图等，希望对大家有帮助-CPLD download line production, including circuit diagrams, etc., in the hope that we have to help

基于FPGA的数字系统设计,包含原理、工程应用和案例。(FPGA-based digital system design, including theory, engineering applications and cases.)

ac97 VHDL core

Top module name : SHIFTER (File name : SHIFTER.v) 2. Input pins: SHIFT [3:0], IN [15:0], SIGN, RIGHT. 3. Output pins: OUT [15:0]. 4. Input signals generated from test pattern are latched in one cycle and are synchronized at clock rising edge. 5. The SHIFT signal describes the shift number. The shift range is 0 to 15. 6. When the signal RIGHT is high, it shifts input data to right. On the other hand, it shifts input data to left. 7. When the signal SIGN is high, the input data is a signed number and it shifts with sign extension. However, the input data is an unsigned number if the signal SIGN is low. 8. You can only use following gates in Table I and need to include the delay information (Tplh, Tphl) in your design.

hdlc协议的封装与解析，fsc校验，完整的例程代码(Decode and Encode an HDLC packet ，using FCS16 calculation)

说明：  反应力测试 利用图片的变换根据用户点击的反应时间判断(Reaction force measurement using the picture of the transformation reaction time based on user clicks judgment)

基于FPGA的双通道旋转变压器测角系统硬件设计，分析的比较清楚。(FPGA based dual channel rotary transformer angle measurement system hardware design, analysis of the relatively clear.)

说明：  基于FPGA的USB接口设计，实现了USB与FPGA的通信(USB interface to FPGA-based design, implementation of the USB communication with the FPGA)

VGA显示彩条DE2_70开发板 验证过的(VGA display color bar DE2_70 development board validated)