system console, external memory, multiple masters

Hi Dave

I appreciate your suggestions. I did try to increase the arbitration shares on the path from the nios to the lpddr memory. Bumped it to 50 (i saw that in a tutorial so i tried it). It had no effect. nios still freezing.

I also tried just writing 200 commands at a time (800 bytes) and it seemed to work. no freezing. But then i realized that i needed to increment the memory address in master_write_memory to keep from just overwriting the same memory space and the freezing came back.

So it seems like i might be writing into some illegal memory, but my code respects the qsys addresses. all of my instructions are written into x00000010 - x00010010 and ive tried my trigger at both x00000000 (lpddr) and x20000000 (on chip).

Any ideas?

thanks