双端口SDRAM控制器，将SDRAM虚拟成两个端口，已经在ALTER DE2开发板的硬件上验证通过，采用Verilog HDL语言编写。-Dual-port SDRAM controller, SDRAM virtual into two ports, have ALTER DE2 development board hardware verification by using the Verilog HDL language.

收发端都采用2M波特率发送串口数据，通过PIN口直接输入输出串口数据，目的是为了跟外围高速器件完成高速的串口数据的收发，普通USB转串口的都只能支持不到1M的波特率，内部采用乒乓FIFO进行时钟域切换以及缓存(The transmitter and receiver are used 2M baud rate serial data transmission, directly through the PIN port serial input and output data, the purp