> Likewise there seems to be no "The" MVS/360 operating system there's a zillion possible local installs of all capability levels and eras, all very different and fun.
VM and MVS back then were interesting beasts. The source was available and many people customised them extensively.
I have been playing with VM/370 Community Edition for some time (https://rbanffy.github.io/fun-with-big-computers/fun-with-vm...), and it's an interesting environment. The other day I decided to make plain VM/370r6 available as a docker image (alongside my other images) and it is a very bare operating system, much less comfortable to play with than CE. The same applies to MVS 3.8j and the various community enhanced "Turnkey" editions.
VM and MVS back then were interesting beasts. The source was available and many people customised them extensively.
I have been playing with VM/370 Community Edition for some time (https://rbanffy.github.io/fun-with-big-computers/fun-with-vm...), and it's an interesting environment. The other day I decided to make plain VM/370r6 available as a docker image (alongside my other images) and it is a very bare operating system, much less comfortable to play with than CE. The same applies to MVS 3.8j and the various community enhanced "Turnkey" editions.