Hi. My qustion is probably dumb. But i'm stuck here. In my design I have a lot of code that can be inferred into ROM automatically, and it does. However, my device doesn't have enough ROM blocks. My question: is it possible by Quartus to infer some code into ROM blocks when it is possible and all the rest let him to make synthesis using ALUTs? Or should I manually divide all my ROM-like code to what will inferred into ROM blocks and that part which will be done usign ALUTs?
[Altera] How to infer some code into ROM-blocks (in automatic way), but not all
Mar 04, 2008
2 Replies
Hi.
Oh, I forgot to write: I use Quartus 7.2sp2 and my device is EP2S60.
The short answer: yes.
I haven't done it myself, but I do know the Megawizard Plug-in Manager lets you choose whether you want ROM blocks synthesizes as block ram, luts or automatic.
Check out the "altera_attribute" help. You should be able to specify on a per-entity basis whether block ram or logic is used to synthesis inferred rom/ram...
Regards,
Mark McDougall, Engineer
Virtual Logic Pty Ltd,
21-25 King St, Rockdale, 2216
Ph: +612-9599-3255 Fax: +612-9599-3266
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