map error-place：375没有足够的可用于组件的免费站点

在较新的FPGA系列中，现在有一些LUT无法实现分布式
记忆。
这节省了硅，因此降低了单位成本，但这意味着你可以
不再用分布式内存填充设备。
在你的情况下，它看起来只有1/2
设备中的LUT可以用作分布式内存，并且您已尝试实现
超过设计中的大量内存。
所以即使总的LUT和
触发器不会累加到器件尺寸，特定类型的LUT全部用完。
您
可能想尝试使用Block RAM来实现你的一些内存，如果它是可用的，
由于分布式存储器LUT的使用数量不是很多
可用金额。
HTH，
的Gabor
-  Gabor



以下为原文

In the newer FPGA families there are now some LUT's that cannot implement distributed
memory.  This saves silicon and therefore lowers the unit cost, but it means that you can
no longer fill the device with distributed memory.  In your case it looks like only 1/2 of
the LUTs in the device can be used as distributed memory, and you have tried to implement
more than that anount of memory in your design.  So even though the total LUT's and
flip-flops do not add up to the device size, a particular type of LUT is all used up.  You
may want to try to implement some of your memory using block RAM if it is avaiable,
since the number of distributed memory LUT's used is not a whole lot more than
the amount available.
 
HTH,
Gabor
-- Gabor

问题描述与利用率摘要不匹配。
设计中的内存目标是分布式RAM（LUTRAM），但利用率摘要说：
LUT用作内存：0
因此过度使用的LUT逻辑不是LUTRAM。
需要检查的一件事是，如果时序驱动的打包/地点由于某些其他问题（通常是不可能的时间）而短暂停止，那么生成的利用率摘要将报告尚未优化的设计，并且可能会报告它在否则会被覆盖。
适合。
检查映射日志文件（.map）以了解其他问题。



以下为原文

The problem description doesn't really match the utilization summary. The memory in the design was targetted to distributed RAM (LUTRAM) and yet the utilization summary says:
 
LUTs used as Memory        : 0
 
And so the LUT logic that is over utilized is not LUTRAM. One thing to check for is that if timing driven pack/place is stopped short by some other issue (usually impossible timing) then the resulting utilization summary will report on the not yet optimized design and it may report that it's overmapped when it would otherwise have fit. Check the map log file (.map) for other issues.