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Altera_Forum
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16 years ago

Quartus II 9.1 changes inference rules for altsyncram

Hi folks, I may have found an interesting "feature" that appeared in Quartus II 9.1: a VHDL constant ROM is not inferred as an altasyncram if its size is not a power of 2. This is not the ...
Altera_Forum's avatar
Altera_Forum
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16 years ago

I have seen a setting to enforce RAM inference for small sizes, but that's all.

What lead me to think about the power of 2 limitation is that in 9.1, the MegaWizard just propose you a drop-down list of sizes, instead of letting you enter the memory size as before.