On 20 Nov 2012, at 18:27, Clem Cole wrote: Be careful when you disparage it. AIX/370 could do some good stuff and I know of a number of firms swore by it for their engineering development teams. One large semi-conductor firm used it for all the simulation of an extremely large processor in the 1980s. At the time, they claimed no other system could handle it. In fact because of the support for process migration and rolling upgrades they keep the simulation running across some upgrades to the system. Right I want a copy - I could run this under VM in Hercules, right? z/OS, AIX/ESA[370] and Debian/390x all under one emulated z/Arch box. That WOULD be cool. If only they could get Ethernet support working (right now the tun/tap thing is a weird point-to-point link AFAIK). Sampsa