Re: Second level VM systems

[Jim Bohnsack]

I think SEPP was available for VM/370 R5.  SEPP, if remember correctly, was the "official" version of the Wheeler Scheduler. I don't thing BSEPP included the Wheeler Scheduler.  HPO R4 was probably the shortest lived IBM release ever.  I supported a shop that was a Beta site (or whatever they called it) for SP4 and HPO4 because it brought "native" mode VM/VTAM.  SP4 didn't seem to be too bad, maybe just in comparison to HPO4.  HPO4 GA'd in about December of 1985 and was replaced with HPO4.2 in about March of 1986.  A good day would mean no more than one CP abend.  Barton Robinson, then IBM, lived with us for a few weeks. Jim Ivan Warren wrote: Tom Duerbusch wrote: Was there overlap? I was on VM/370 Release 6 BSE. I left that employer and when I went to another place, a few years later, I installed VM/SP 3. So I want to say that it was: VM/370 Release 1 VM/370 Release 2 VM/370 Release 3 VM/370 Release 4 VM/370 Release 5 VM/370 Release 6 VM/SP 1 VM/SP 2 VM/SP 3 VM/SP 4 VM/SP 5 along with VM/IS 5 and VM/XA Release 1 VM/SP 6 along with VM/IS 6 VM/ESA 370 mode VM/ESA ESA mode I remember BSE (Basic System Extensions), being an option. I don't know if there were other options available or if the option really wasn't optional. IIRC, SEPP & BSEPP were optional extensions to VM/370 R6. I think they added stuff like Fullscreen I/O and LDEVs. Also HPO : 4 & 5 simultaneously with SP 4/5. (there might have been earlier HPOs, but I'm not sure only have worked with HPO 4 & 5). And the case of the mysteriously disappearing HPO 6 that should have come along with SP 6.. Current (at that time) HPO 5 users received all the HPO 6 manuals only to be told that there would never be an HPO 6 ! We were then told something in the line that HPO 6 *DID* exist, but would never be publicly released (only the U.S. Govt would have access to it). They claim they did this to push VM/XA SP 2.1.. And that the manuals were erroneously shipped ! Which did cause some grief at the shop at was working at that time since VM/XA severly lacked 3270 BSC support Note the list is also missing the VM/XA SF & VM/XA SP line of products ;).. But yeah.. I think VM/XA SP1 was with SP 5 and VM/XA SP2 was with SP6 (with a supposedly common version of CMS.. CMS 6.5 ?) --Ivan -- Jim Bohnsack Cornell University (972) 596-6377 home/office (972) 342-5823 cell jab...@cornell.edu