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On Tue, 12 Nov 2024 at 11:36, Drew Derbyshire via groups.io <swhobbit= [email protected]> wrote: [...] > On Mon, Nov 11, 2024 at 12:41 AM, William Denton wrote: > > when did DMK become HCP? > >

*NOTE:* Personally, I was fat, dumb, & happy on S/370 hardware until late 1987, which was well into the VM/XA SF era. What follows are what I recall from casual conversations with people shortly after

Whilst this is true, and you may find some of my rants about it in the vmshare archives at http://vm.marist.edu/~vmshare/, in practice for much of CP the source code wasn't of use. Lots of the CP

One of the main things I really remember about the DMK-->HCP transition was that IBM abandoned the whole notion of source code maintenance. HCP started to have OCO modules!!! Up until that point, even

Hi, Tony, What I recall is, IBM PokLabs was trying hard to "kill off" the whole VM product line around that time. What I heard is this: Fortunately, Tom Watson Jr. was smart enough to realize what was

[email protected]> wrote: The first appearance outside IBM of a CP that ran on an XA machine was the VM/XA Migration Aid, sometimes called XA/MA or XAMA, announced in 1981 (the same year as HPO for

VM/HPO as all DMK. HCP was for VM/XA and its follow-up, VM/ESA (the real one), z/VM. -- Kris Buelens

Interesting, because VM/ESA 370 is still DMK. That says it's not HPO like I was told it was. Not that I have any hardware on which it would make a difference... [email protected]> wrote: -- Jay

"when did DMK become HCP?" HCP started as the prefix for the High Performance Option (HPO) for VM/SP. The HCP code was a 1-to-1 replacement for the SP DMK code. Kind regards, Gary

It would be when the short lived VM/XA appeared. Its been a while but doesn't VM/ESA 370 feature still have DMK CP Modules. So 370 mode == DMK, XA/ESA/Z == HCP Dave

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... I am trying to remember... when

I found this detailed summary of the history and evolution of various features throughout the lifetime of VM/ESA: https://www.vm.ibm.com/techinfo/vmfblank.html

Thank you Ross! REGEQU worked like a charm, i didn't need to do anything, being logged in as CMSUSER, to get the macro compiled correctly. Now i'm looking at some video that promise to be interesting:

My understanding, from back then, was that VM/ESA 1.0 (so-called "370 edition") was a "mid-life kicker" to keep VM/SP and HPO customers happy, and allow them to migrate to VM/ESA, taking advantage of

Well as it was not VM/SP it had a new licence, so extracted money from those still on 370-only machines. It had the bi-modal capable CMS so it broke quite a few applications, but it didn't actually

As I understand it, VM/ESA 370 Feature v1 was effectively VM/SP HPO release 7. I think they renamed it to assuage concerns about how long VM/ESA was taking, or something. [email protected]>

I never did understand why they came up with that oxymoron of a name for VM/SP.? What DID it have? Did it even include VM/SP HPO? -ahd- — Drew Derbyshire Software Hobbit (SRE Emeritus) Kendra

Actually, VSE/ESA version 1, like VM/ESA 370 Feature, had an ESA name but ran on 370. Even that probably wouldn't run on VM/CE, and wouldn't be licensed anyway. [email protected]> wrote: -- Jay

[email protected]> wrote: Yes: REGEQU. You can instruct the assembler how to find it by the GLOBAL MACLIB CMSLIB command. 2. Is it possible to run VSE/ESA under VM/370? > No. VSE/ESA will not run in

ESA is a newer architecture than VM/370 was designed to handle - it uses 31-bit addressing where VM/370 is from the older 24-bit addressing era. I believe the matching OS of the 370 era would have