请教VHDL高手 VHDL, 高手, 请教

wdwong

编译时出现错误：
Error:Unknown problem in c:\downloads\vhdl\ktc.vhd[%DLS-E-IIINodeRef,qRepresents of EqualOp node [number 110] in unit DLS_MAXPLUS_PROJECT:KTC-BEHAVE.SynthesisView refers to unattached BinaryOperation node;in CheckAttchNode.]

请问是什么意思啊？