ISE map出错

renAlex

我把一个做好的模块A放进大工程B里面提示A map出现错误
提示错误：FATAL_ERRORlacel_Design.c:3055:1.264 - Unable to place this RPM. Due to its   structure a packed grid cannot be constructed, hence its group cannot be
   created and placed.    For technical support on this issue, please visit
   file:///C:\Users\KD004\AppData\Local\Temp\%W@GJ$ACOF(TYDYECOKVDYB.pnghttp://www.xilinx.com/support.



但是我单独MAP A可以通过