Arty Z7 DRAM Memory

[Antonio Fasano]

Hi, Guys,

Does SDK C programming gives us full access to all 512MB DDR3 memory present in Arty-Z7-20 Board ?

Will it work if I declare an array of char in the size of 5000000 (Five million elements) ?

Thanks

Antonio

 

  

[jpeyron]

Hi @Antonio Fasano,

I am not sure if sdk will give you full access to the DDR3. You might need to adjust the linker script and/or the mss file to get the maximum the SDK will access for the Arty-Z7-20. I did find the maximum allowed for zynq processors as discussed here.

thank you,

Jon

 

[Antonio Fasano]

Hi, Jon,

I made a small software to test how big an array of char can be in SDK and still assign and read correct values on the ARTY-Z7-20 DRAM Memory.

I found out that it goes all to way to 500 MB. I did not check further, but that is a hell of a memory capacity !!! Very good !!!

Regards,

Antonio

 

[jpeyron]

Hi @Antonio Fasano,

Thank you for sharing what you found!

cheers,

Jon