我用cadence16.5 conceptHDL设计原理图,完成后道pCB,我使用的Top-down式原理图设计方式 . V# a9 `! u; g2 y& N v导PCB时提示“Connectitivity server is unable to load design. The .xcon file might be missing or incorrect. Your design needs to be netlisted in 16.4 or later version of Design Entry HDL" * L( y# w& s0 w8 C& t% L. }, r6 V9 h% k0 U
这个是由什么问题导致的? 5 v9 ]$ @) `: S4 p; Q8 x" s& Z