Hi, I've figured out how to make Gary's RSTS-simulator system use a 3 1/2-inch floppy as an RL01, meaning that if we ever want to exchange software for this thing among ourselves, we could do it on "RSTS-formatted" disks. Or, presumably (I haven't tried it yet), that you could use the RSTS BACKUP package to do backups. Details on request. Cheers, Alan