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 + U' o0 z8 d: G! ~! o" \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": ^3 g: s6 ]9 s, ~' x
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这个是由什么问题导致的?' B; o L/ R- \2 S. M. a0 R9 ~