Coregen to generate a ROM of 32X1500 using LUT to construct multiplexer.

When I choose Distribute Memory -> Depth 2048 -> Width 64 -> ROM -> LUT based, and my .coe file contains only 1500 words, what will ISE do during the P&R? Will it save the 548 words or implement them with zeros anyhow?

My FPGA has ample LUT remaining, but little BRAM. I need to plug in some more data which is meant to be put in the BRAMs. Where is the place I can store these data?

Reply to
Acceed See
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depends on how the rom is generated. You can actually get it to create a smaller ROM if lines are duplicated and it will reduce further that the 548 missing lines. You should however define any unused locations even if they get optimised out.




Reply to
Simon Peacock

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