verilog 硬件语言实现DDS，使用ise11.1和modelsim se6.5仿真测试-verilog hardware language DDS, using the simulation test ise11.1 and modelsim se6.5

文档中含有DDS的VHDL实现，FIR滤波器串并FPGA实现，synplify,ISE,ModelSim后仿真流程和FPGA设计的资料-document contains DDS implementation with VHDL , FIR filter serial to parallel and FPGA implementation, and synplify, ISE, ModelSim simulation and FPGA design