在总线上挂了一个DUAL RAM ip出现以下错误, ERROR:NgdBuild:604 - logical block 'opb_lcd_noinr_0/opb_lcd_noinr_0/USER_LOGIC_I/u_lcd/U_ram' with type 'mem_lcd' could not be resolved. A pin name misspelling can cause this, a missing edif or ngc file, or the misspelling of a type name. Symbol 'mem_lcd' is not supported in target 'virtex2p'. 检查没有发现 pin name misspelling 现象,请高手指点,是怎么回事。谢谢
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