dac900驱动，使其产生正弦波，其中关于ram的查询以及pll倍频模块，该代码只是总的调用-DAC900 driver to produce a sine wave, which RAM query and PLL multiplier module, the code is just the total number of calls

自己写的，FPGA为Cyclone ep1c12q240c8，dac芯片是DAC900。fpga内置ram存储波形数据，发送给dac900产生波形。用VerilogHDL编写。-Write your own, FPGA as Cyclone ep1c12q240c8, dac chip is DAC900. Built-ram fpga store waveform data, waveform generated is sent to dac900. Written VerilogHDL.

DAC900芯片驱动的Verilog语言描述，亲测可用。另外的是FIR滤波代码和DDS波形发生器的代码。既可单独使用，也可以整合在一起。-DAC900 chips driven Verilog language descr iption, pro-test available. Another is the FIR filter code and DDS waveform generator code. Either used alone or can be integrated.