<Out of interest, what would a N* want with 256K anyway? Presumably, <whatever OS it is running is pretty hefty stuff! It ran NSdos which was pretty lightweight. and didn't care much about how much ram there was. It was possible to run multiuser NSdos. CP/M was commonly ported to it and 2.2 could be banked if you weren't faint of hear and CPM-3 was designed for banked operation. MPM was a multiuser cpm that also could use banked ram while running multiple users. Mine has 128k in it at current, running CP/M-2 banked. Allison