ASIC4 Extended Mode Addressing

Who wants a deep-dive into a tiny aspect of Psion SSDs and their ASICs? I was using a PsiDrive a couple of months ago to dump a 2MB SSD. However, when I tried to extract the files, my FEFS extraction tool (siboimg) segfaulted halfway through. So, as I was in a rush, I decided to come back to it another day. Yesterday was that day. My first thought was that it could be a problem with the Pico 2,…