According to Wikipedia, AIX/ESA will run as host or guest on System/370... if I read it right. -- Mark Benson http://markbenson.org/blog http://twitter.com/MDBenson On 20 Nov 2012, at 14:28, Sridhar Ayengar <ploopster at gmail.com> wrote: Dave McGuire wrote: Well I could use a copy of AIX370.... If you could, you'd be the first! What a waste of a perfectly good mainframe. I have to agree. I love UNIX, but running anything other than MVS on something like that, or maybe VM, is just a sin. Why not as a VM guest? Peace... Sridhar