On Sep 2, 12:15 pm, David Schmenk <dschm...@YUCH.gmail.com> wrote: > So if I find /RAM when I start, I can trash all of AUX - including AUX > LC? Pretty much. In addition to the areas others have mentioned, if you overwrite LC card page FF remember that there is a copy of the IRQ vector you will need to avoid if you want to use interrupts while AUX LC is banked in.