再次请教: 当我把5.0版的Q2里的工程编译后,要打开SOPC BUILDER 时,出现图示提示: 怎么理解呢?特别是最后括弧里的一句话。 Upgrate Project File f:/terasic/..../std_1c20.ptf was created using an earlier version of SOPC BUILDER (5.00) Do you want to continue opening this file and upgrate it for use with version(potentially rendering it unusable with earlier versions)?