16*16点阵显示”北京欢迎"

NIOSII I2C接口模块及驱动程序，并含有测试程序。对想开发NIOS的工程师很有帮助(NIOSII I2C interface module and driver, and contains the test procedures. NIOS of engineers want to develop useful)

timblogiw.c timberdale FPGA LogiWin Video In driver.

交通灯控制系统VHDL源码，用VHDL语言、MAXPLUS2环境设计实现(VHDL core)

这通过反馈来实现一个 17 位伪随机的无符号计数器异或的位 0 和 3。 注意 ︰ 如果也绝不是独家使用相反，这会反相平行的位模式 & 这将意味着所有位都零是一种有效模式和所有那些不都是有效。  目前所有的都是有效的。

产生长度为100的随机二进制序列 发送载波频率为10倍比特率，画出过采样率为100倍符号率的BPSK调制波形（前10个比特） ，及其功率谱 相干解调时假设收发频率相位相同，画出x(t) 的波形，假设低通滤波器的冲激响应为连续10个1（其余为0），或连续12个1 （其余为0） ，分别画出两种滤波器下的y(t)，及判决输出（前10个比特） 接收载波频率为10.05倍比特率，初相位相同，画出x(t) 的波形，假设低通滤波器的冲激响应为连续10个1，画出两种滤波器下的y(t)，及判决输出（前20个比特） 采用DPSK及延时差分相干解调，载波频率为10倍比特率，画出a, b, c, d点的波形（前10个比特） DPSK及延时差分相干解调，载波频率为10.25倍比特率时，画出a, b, c, d点的波形（前10个比特） DPSK及延时差分相干解调，载波频率为10.5倍比特率时，画出a, b, c, d点的波形（前10个比特） (Produce random binary sequence of length 100 The transmission carrier frequency is 10 times the bit rate, draw a sampling rate of 100 times the symbol rate of the BPSK modulation waveform (first 10 bits), its power spectrum Coherent demodulation of assuming the same as the phase of the transmitting and receiving frequencies, and draw the waveform x (t), assuming that the impulse response of the low pass filter 10 consecutive 1 (the remainder is 0), or 12 consecutive 1 (the remainder is 0), y (t) is drawn under the two filters respectively, and the decision output (10 bits) The received carrier frequency is 10.05 times the bit rate, the same initial phase, draw the waveform x (t), assuming that the impulse response of the low pass filter of 10 consecutive 1, shown under two filter y (t), and decision output (20 bits) DPSK and delay differential coherent demodulation, the carrier frequency is 10 times the bit rate, draw a, b, c, d point of the waveform (first 10 bits) DPSK and delay)

Implementation of CORDIC atan block in VHDL

代码用两种方法设计了一个基于多相滤波的内插器，低通滤波器采用128阶凯撒窗，内插倍数32，并且给定信号范围，验证了内插器的正确性，画出了内插前后信号的频谱。(The code design the interpolator based on polyphase filter using two methods.The low pass filter is 128 order Caesar window and interpolation multiple is 32.I give the range of the signal to verify the interpolator and plot the spectrum of the signal before and after the interpolator. )

说明：  运用VHDL描述函数发生器的各个波形，可有构成多功能函数发生器。(VHDL description of the use of various function generator waveforms, can constitute a multi-purpose function generator.)

一个用Verilog编写的编帧、解帧及码速匹配的程序，相当经典(Verilog prepared with a series of frames, frames and solutions yards speed matching procedures, rather classic!)

SoC sample Code using Altera Xcaliber, good usefull SoC.