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Altera_Forum's avatar
Altera_Forum
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9 years ago

Using Qsys SRAM and SDRAM controllers without a Nios II

I need to communicate with the SRAM in the DE2-115 board using purely VHDL code. No Nios II. Later I may have to use the SDRAM instead if bigge memory is required. I understand that a controlle...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
9 years ago

Believe me it is very easy to integrate the sdram controller in your design, by QSYS, and compile. I don't talk about simulation because I did not simulate the sdram controller.

I remember I created one new QSYS project and included it in a project (custom cyclone fpga board which included SDRAM) and made the project running in less than one hour, including writing the Nios C code that tested the SDRAM.

Assume you have the SDRAM controller for simulation, do you a model for the SDRAM itself? I mean having the SDRAM controller in the simulation without the SDRAM model is useless.

For simulation, I recommend that you start with a simple QSYS project which includes one on-chip memory and one custom master Memory Mapped block.

Or a simple QSYS project which includes one NIOS processor and and on-chip memory and GPIO peripheral to make yourself familiar with everything QSYS.