vhdl实现vga接口设计，非常实用的一段代码，学习用

Actel FPGA A3P600最小系统原理图，包含JTAG 、电源和封装 (Actel FPGA A3P600 minimum system schematics, including JTAG, power and packaging)

用VHDL编写的步进电机控制方法.供大家参考用.-prepared using VHDL stepper motor control methods. For your reference.

这个是vhdl中很常见的jk filpflop的文件只用于很小数位的变化 其中的jk文件是up down运算都符合的(This is a very common vhdl jk filpflop file is only used for very small changes in a digital file which jk is up down operations are met)

说明：  USB传图至fpga板缓存至DDR内，FPGA再读出图像数据，显示在TFT彩屏上；(USB to the FPGA board cache DDR, FPGA read out the image data, display on the TFT color screen;)

说明：  quartusII 9.1，位同步提取电路，可以实现位同步时钟提取，其中包括分频器，和由D触发器以及与门组成的鉴相器模块。(Quartus II 9.1, bit synchronous extraction circuit, can realize bit synchronous clock extraction, including frequency divider, phase discriminator module composed of D trigger and and gate.)

RapidIO：使用Avalon-ST直通接口的实现方法，可以在fpga上实现(rapidio altera)

简要地说明时序约束的内容，对入门级的朋友相当起到引导的作用(Briefly describes the content of timing constraints on entry-level friends rather play a guiding role)

XAPP585 serdes_1_to_7 and serdes_7_to_1 data

VHDL 洗衣机程序，可实现定时、报警、洗衣，脱水等等功能。底层为VHDL文件，顶层为电路图连接

interruption routine for PIC16F877