So, thinking back a ways... I ran a large VM shop from /370 r3, SEPP, SP, HPO, and maybe one more after that before the bank decided that MVS (yuk) was the way to go...
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I am trying to remember... when did DMK become HCP? I am thinking it was before ESA and z but I just don't remember... I sort of tuned out when IBM decided to no longer support VM and CMS at the source level.
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cheers,
William
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