相位累加器phasesum + 波形ROM的DDS系统， 累加器的输出address(9...0) 和 ROM的输入address(9...0)相连，都是STD_LOGIC_VECTOR (９ DOWNTO ０)的数据类型，可是综合的时候报错信息为： Error: Incorrect connector style at port "address[9..0]" for symbol "inst2" of type phasesumError: Incorrect connector style at port "address[9..0]" for symbol "inst" of type rom Error: Can't elaborate top-level user hierarchy
到底出错在哪里呢？请各位高手帮帮小妹我！大谢！ | 
