Hi, I am trying to debug problems with an operatingsystem MMU and cache memory settings. I use the USB-cable probe and want to be sure what kind of data I am reading. I want to read both memory through the datacache and also the physical memory directly. I use the mrd command on the XSCT prompt with -address-space PA <address> <len>. In the help and documentation I can not find -address-space PA but other variants like AP0 but that does not work for me. Can someone tell me what kind of address-space I should use for raw memory access, or is address-space PA a raw read? I hope that "mrd <address> <len>" gives me a cpu read through cache.