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! {5 R- j0 x2 |# Q1 S7 _& z( q3 ~8 p
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& Z4 L- B9 |0 { W) n # U+ w' j- d2 q" d9 S- e) a这个是由什么问题导致的? 9 y; _& G7 w* Q+ `5 z4 X4 m