本人编写的SSRAM高速读写工程，工程中包含了NIOS软核，利用Quartus的TimeQuest工具进行了时序约束，上班调试最高读写速率可达250MHz。-I write the SSRAM high-speed, speaking, reading and writing, engineering includes NIOS soft core, timing constraint is studied by using Quartus TimeQuest tools, work to de