<What are the commands available? And where can I find the boot sequences? <Which is kindofa moot point right now because I don't have an os disk. ;( CR, LF, P, /, R ODT is a very simple monitor for depositing, displaying memory and registers. If your serious about PDP-11s fine a copy of the Microcomputer handbook for one of the years in the range of 1976-9*! They are pretty common and essential in the informationof the PDP-11 family. <And what are all the device names? Depends... Allison