tss-360 was the original "designated" operating system for the 360-67. it was never very succesful. in anticipation of virtual memory, the cambridge science center
built cp-40 for a custom modified 360-40. In 1967, it was moved to a 360-67 and renamed cp-67. more reference to cp-40 project in Melinda's history paper
a number of univ. had ordered 360-67s in anticipation of tss-360. with the dismal showing of tss-360 some number of 360-67 customers took to installing cp67-cms. others just used their machine in 360-65 mode (w-o virtual memory) using (batch) os-360.
UofMich ... built their own virtual memory system, interactive system for the 360-67 named MTS. Some history (and lots of pictures) here
one could quibble with the claim above ... about being the first operational virtual memory operating system in the world ... along with Multics at MIT ... several references to Multics history site:
this describes a project at UofMich to build their own communication controller using a PDP8 ....
similar to the project I was involved at as an undergraduate that used an Interdata-3
another MTS reference site:
for other folklore, the science center had installed a copy of cp67 out at lincoln labs in 1967 (and then the came out to the univ. I was at, and installed cp67 the last week in jan68).
a lot of the batch stuff was dataprocessing w-o having a human to control it ..... besides...
lincoln labs had written a very simple mulbreastasking system for the 360 called LLMPS (lincoln labs multiprogramming system). The folklore was that the people at UofMich scaffolding building MTS using LLMPS.
re: oh and a large part of internal corporate computing was cp67-cms and then vm370-cms based ... even development for some of the more...
misc. past posts mentioning LLMPS