On Mar 21, 9:57 am, Mike Willegal <m...@willegal.net> wrote: > One other thought. > > Inhibit only controls enable of the onboard ROM D000 to DFFF. This is true for the Apple II and II+. The Apple IIe is different - according to Jim Sather (page 5-24 Understanding the Apple IIe) the INHIBIT' line disables all main & auxiliary RAM as well as the ROMs.