From a programming standpoint, the 3066 had different geometry (80x33), different set of buffer orders, and completely different CCWs, interrupts, and sense data. I think IBM only put software support in the operating systems was because the beast was THE system console. Nobody ever thought of it as being a "real" terminal that would run TSO or CICS... CMS was an exception but barely usable... Edit worked in terminal mode only as I recall... In my shop when we had the /168, the 3066 was only used during IPL and doing diagnostic work. In fact, the 168 console was stuck in a back corner of the computer room and all the real operation was done from a bank of real 3270s in the center
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cheers,
William
