How to assign memory bits?

Hi,

Check this link https://www.intel.com/content/www/us/en/programmable/quartushelp/17.0/logicops/logicops/def_auto_ram_recognition.htm#:~:text=A%20logic%20option%20that%20allows,the%20functionality%20of%20the%20design.

This option must be assigned to a design entity or it is ignored check screenshot below:

Btw, this option is turned on by default as global assignment in Assignments -> Settings -> Advanced Settings (Synthesis)

Thanks,

Best Regards,

Sheng

Yes as long as you've used a template or followed the recommended coding guidelines (https://www.intel.com/content/www/us/en/docs/programmable/683082/23-1/recommended-design-practices.html), RAM blocks are inferred and used automatically. That assignment is more often used to *prevent* using on-chip RAM for a memory, usually in cases where you don't need the performance of a dedicated RAM block, devoting the actual RAM blocks for more critical functions.

Hi,

Do you have any further update or concern on this thread?

Thanks,

Regards,

Sheng

Thank you very much.

I understand that the ”Auto RAM Replacement logic option” is except MAXseries devices.

I would like to design using IP.

Regards

Hi,

Does the problem being resolved if Auto RAM Replacement is assigned to the design entity of IP that mentioned in the previous post link community.intel.com/t5/FPGA-SoC-And-CPLD-Boards-And/How-to-assign-memory-bits/m-p/1580782#M27049

Thanks,

Sheng