Working as a systems programmer on IBM big iron

Thanks for your note, Rich. This is a wierd one for some reason, mystery surrounds it. I know people who remember every CPU model and OS they ran, how much core they had, what date they got the machine, etc. but nobody seems to remember the details on when IBM started their current policy of not shipping source or when OCO was. I guess everyone was so traumatized they blocked it out! All the confusion and lack of detail is surprising when you consider how much people remember the details of everything else. If you want I can ask what people recommend to run on your 360/40. I know a few old time sysprogs. I have definitely heard of people running starter systems with much less than 64K, I just don't know if they were good for anything except sysgens.