exxos's Atari, Amiga & retro forum

Hello,

I am having a strange problem with my Amiga 500, using a TF536.

Using a normal 68000, no memory problems.
Using a TF536, I got guru messages, which looks a memory problem.

I used Ami Test Kit (Gotek Drive), and found some memory problems, but I don't know where to look for the sollution.

Below there is an picture of the memory test:
I am having an A500, Rev 6A, with 1 MB Chip mem (mod on board).
Usingkickstart, 3.1

I hope someone can give me some tips, finding and solving the problem.

Has it ever worked?

Interesting pattern. Could that indicate two damaged data tracks between 680x0 and the SDRAM?

If so, could it be in two places, either between "CPU and FPGA" or "FPGA and SDRAM"?