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& T$ [: d- j% b' P. e; e
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" : R) b9 b6 {) O* B ! w; x" R3 \ o) y& C7 v这个是由什么问题导致的? - i+ Y0 z. Q% Y! b