Verilog—xl很全的设计文档，能帮助在短时间内学会Verilog—xl-Verilog-xl is full of design documents, can help immediately learn Verilog-xl

记忆力测试，分为初级，中级，高级找出几张相同的图片，如果找出的图片不一样，游戏就重新开始。-memory text

专门解析晶体的软件，很有用哦！原来旧的版本中被此XL替换后，可以升级到最高版本-Specialized analysis software crystals, very useful Oh! The original version of the old is replaced after this XL, you can upgrade to the highest version