The model 20 was a unique 360. It was made in Germany and had some quite different supervisor-state opcodes (e.g. XIO for doing I/O). In my youth I stumbled across the minutes of the local IBM User group (circa 1967) and there was a big debate as to whether those with 360/20 should form their own user group. (There's something Pythonesque about that, sort of like the PLPA from Life of Brian: "Splitter!")
Neale On Tue, 2006-11-07 at 14:38 -0500, Steve Gentry wrote: > > "SC Magazine" "For Security Professionals" Yes it is online, but I > did not find the article. In doing some additional searching, > I think it is a 360 model 20. I didn't know 360's came this small. > Steve G
