用于sopc builder添加组件用的ps/2 键盘 ipcore

通信中常用的PN序列产生器的源代码全部打包(Communications commonly used in PN sequence generator, the source code of all packaged)

有很多例子及测试代码，对初学者很有帮助，很容易上手-a lot of examples and test code, useful for beginners, it is easy to get started

出租车记价器，使用vhdl语言编写的源码及其仿真。-Taxi price of devices in mind, use the source code written in vhdl and simulation.

XC95144步进电机驱动器源码,采用verilog vhdl开发,个人原创-XC95144 stepper motor drive source, using verilog vhdl development, personal originality

VHDL is defined by IEEE Standard 1076, IEEE Standard VHDL Language Reference Manual (the VHDL LRM). The original standard was approved in 1987. IEEE procedures require that standards be periodically reviewed and either reaffirmed or revised. The VHDL standard was revised in 1993, 2000, and 2002. In each revision, new language features were added and some existing features enhanced. The aim in each revision was to improve the language as a tool for design and verification of digital systems. Since the 2002 revision, there have two parallel efforts to further develop the language. The first was the VHDL Procedural Interface (VHPI) Task Force, a subcommittee of the IEEE P1076 Working Group. The VHPI Task Force prepared an interim amendment to the standard, formally approved by IEEE in March 2007. The amendment is titled IEEE 1076c, Standard VHDL Language Reference Manual―Amendment 1: Procedural Language Application Interface.

每次开机都将次数加1 并存储到EEPROM。这样就能直观的看到机器的使用次数 用P1口 LED做为显示，次数大于256是将溢出，按复位模拟开机 或者直接通过开关开机(Each boot will add a number of times and stored to the EEPROM. So you can visually see the frequency of use of the machine as with P1 port LED display, the number is greater than 256 will overflow, analog power or press the reset switch power directly through)

Cadence_manual_1.2.pdf

本文件是可以直接使用下载到FPGA里面使用，里面包含时钟分频电路，串并转换和并串转换电路，多通道信号加权的乘加电路等。-The document may download to FPGA chip to complete the clock divider,serial-to-parallel,parallel-to-serial,and multiple-add circuit for multiple channels weight calculation

（1）用HDL设计一个多功能数字钟，包含以下主要功能：精确计时，时间可以24小时制或12小时制显示； （2）日历：显示年月日星期； （3）能用QuartusII软件仿真；

基于EDA的八音自动播放电子琴设计 内有VHDL语言设计 有-The octave-based EDA player automatically have a flower design language VHDL design