Sending data to BRAM?

[drkome]

BRAM structure I created as Verilog code, How do I send the data later to save it. I have a Zybo Z-7 Card. I have my own RISC-V processor. And I'm communicating with BRAM. All in verilog code format. But I want to throw code(instruction) to BRAM. How can I do that.

[artvvb]

Hi @drkome

There are a bunch of potential options, which depend on your final application.

BRAMs can be pre-filled with data when you create the bitstream, if you're implementing them through Verilog, this might take the form of an initial block with a $readmem statement of some kind that pulls data from a file. There are other techniques to manually load them, which can be seen here: https://support.xilinx.com/s/article/63041?language=en_US

You can add hardware to write to the BRAMs after the bitstream is programmed into the FPGA. This is very open-ended. Making the BRAMs a dual port with one port be addressable by the Zynq PS through an AXI interface is one option. Forwarding data received from PS UART through an EMIO interface is another option.

Thanks,

Arthur

[drkome]

I was designing a RISC-V processor for my thesis project. But I decided to use BRAM. I didn't know how to load data after bitstream. I will research the keywords you provided. Thank you

[drkome]

@artvvb so can I fill the .hex file inside the bram with the bitstream and then embed it in the FPGA?