FPGA

复旦cpu COS

实现dsp与fpga的emif的verilog异步实现，可实现异步读写以及相应功能模块控制，文件中包含仿真后的波形图形以及仿真测试程序，运行环境quartus ii11.0，仿真环境mmodelsim se 6.5d(Achieve dsp and fpga verilog asynchronous implementation of the emif, enabling asynchronous reading and writing as well as the corresponding function module control, the document contains graphics, and after the simulation waveform simulation testing procedures, operating environment quartus ii11.0, simulation environment mmodelsim se 6.5d)

build synthesizer on a de2 dev fpga board

简单的一个Verilog小程序，适合刚接触的人群(A simple Verilog small program, suitable for people just contact)

超低速的光纤一体发接收发送器,同于以前的光纤一体化接头都只适用于2M以上的通讯,如需将232等低速信号用光纤传输出,需要加复杂的调制解调电路,网动光电新生产的这款光纤头主要针对低速信号,可以传送DC-500KPS的信号,极大地简化了硬件设计.(Ultra-low-fat whole-speed fiber-optic transmitter receiver with fiber-optic integration in the previous joint only applies to more than 2M communications, etc. For the 232 low-speed optical fiber transmission of signals, the need to increase the complexity of the modulation and demodulation circuit, the net move Photoelectric new production of this first major response to low-speed fiber-optic signal, DC-500KPS can send the signal, greatly simplifying the hardware design.)

布尔乘法器带testbench好用的工程啊(Boolean multiplier works with testbench nice ah)

该程序是一个可完成订制化的SPI双向总线接口，时钟相位、极性，以及分频比全部可通过寄存器进行配置，已经在ISE下通过综合，占用资源少，强烈推荐 (The program is a complete custom of SPI bidirectional bus interface, clock phase, polarity, and the divider ratio can all be configured through the register, has been in the ISE through an integrated, small footprint, it is strongly recommended)

8位十六进制频率计设计 根据频率的定义和频率测量的基本原理，测定信号的频率必须有一个脉宽为1s的输入信号脉冲计数允许信号；1s计数结束后，计数值被锁入锁存器，计数器清零，为下一测频计数周期做好准备。测频控制信号可由一个独立的发生器（FTCTRL）来产生。-8-bit hexadecimal Cymometer designed in accordance with the definition of frequency and frequency of the basic principles of measurement to determine the frequency of the signal must have a pulse width of the input signal for 1s permit pulse counting signal 1s counting after the total value was locked into the lock depositors, counters cleared for the next count cycle frequency measurement ready. Frequency control signal generator may be an independent (FTCTRL) to generate.

使用QuartusII软件，利用VHDL语言设计实现CPU,其中包含时序图仿真。(Using software QuartusII, using VHDL language to design the CPU, which contains sequence diagram simulation.)

数字ic设计，二级缓存，格雷码，深度256，(Digital IC design, two level cache, gray code, depth 256.)