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Altera_Forum's avatar
Altera_Forum
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12 years ago

Quartus sythesizes double the on-chip memory bits

Hello, I'm testing out how to code and simulate the on-chip memory usage, which is working well. However I've noticed in the Flow Summary window after compiling, it's using double the memory ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

--- Quote Start ---

Your "mem_test" module references signals "address" and "wren" which you have not defined anywhere.

Fix those problems and try again.

If you are still confused about what is happening, check the report Fitter->Resource Section->RAM Summary and see what it thinks it's doing for you.

--- Quote End ---

I've just had a look at the report, and it says:

Implementation Port A Width = 16

Implementation Port A Depth = 2

That would be 32bits. Any reason why it's using 2 deep even though I've fixed the address to a single address?