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, ~& {9 v* j2 F7 y7 P5 T8 \) u2 J
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" $ E; j z! s9 R7 l- g5 @* l! E % w% y6 b3 A' j1 K- `) I$ v5 }这个是由什么问题导致的?# a- l7 Z" R6 O1 V# E