Problems when writing to memory about vexriscv

[Dolu1990]

Hi,

Are you using the JTAG to load the binary ? If yes, the dBus need to have an access to the instruction memory to be able to load the binary.

Could it be the issue ?

[yannickl96]

Hi,
thanks for your reply. The binary is loaded to the instruction BRAM by using AXI. The iBus is connected to the same BRAM. Then I have another BRAM which is connected to the dBus. To this BRAM I want to write the value.

[Dolu1990]

hmm Do you have a wave to share ? vcd file ?

[yannickl96]

I just looked through the whole assembler again and noticed that the stack pointer is not initialized (which makes sense, since I don't have an OS running on the processor). Therefore the processor wants to write to an address at 0xFFFF..... which is not mapped. So I'll edit the linker script to provide a stack pointer that is initialized fitting to the size of my BRAM. I'll let you know how it goes.
Thank you for your time, anyways.

[Dolu1990]

Have you checked https://github.com/SpinalHDL/VexRiscvSocSoftware/tree/master/projects/murax/demo/src ? There is maybe some usefull ressources to setup things.

[yannickl96]

Thank you, I'll take a look :)