How to configure the on-chip RAM size

[Rithik260]

Hello,

I am working on integrating a CNN accelerator with the Murax SoC. The default 8kB of on-chip RAM is not enough to store the trained weights for my model.

I need to increase the RAM size, but I couldn't find instructions in the documentation on how to do this. I assume it's a parameter in the SpinalHDL configuration, but it's not immediately obvious where to make this change or what the downstream effects are.

Could you please provide a pointer on which file and parameter to modify?

[Rithik260]

@Dolu1990 please help

[Dolu1990]

Hi,

VexRiscv/src/main/scala/vexriscv/demo/Murax.scala

Line 346 in ba79495

SpinalVerilog(Murax(MuraxConfig.default))

=>

SpinalVerilog(Murax(MuraxConfig.default).copy(onChipRamSize = 8 kB))

[Rithik260]

getting this error, on running sbt

[Dolu1990]

Ahhh right =>

SpinalVerilog(Murax(MuraxConfig.default.copy(onChipRamSize = 8 kB)))