Our customers base is VSE. We have customers that are running (in
production) old levels back as far as VSE 2.1. We have customers running
hardware as far back as MP2000 boxes. Until last year, we actually had a
VSE 1.4 customer. When you consider the fact that some of our customers
are running non-Y2K compliant systems, it is a little scary! But, they
keep sending in the checks. :-)
While there are some sub-features of some of our products that require
later levels of z/VSE (which have their own hardware requirements),
almost all our code has to run on the older platforms.
Tony Thigpen
-----Original Message -----
From: Peter Relson
Sent: 10/12/2011 07:27 AM
Not evil, just can't use them since the customer may not have the
hardware support. The current program I am working on requires z/VSE 4
so I was attempting to use some of the halfword-imm stuff. I just picked
the wrong instructions. So, again, back to using old instructions.
I'm curious. Are there actually customers out there who are running a
machine that is older than the minimum required for OS/390 R10 (namely
machines which support the initial relative/immediate support)?
We know that such customers would not be running a supported level of
z/OS, but they might be running something other than z/OS, or something
that is no longer supported.
Peter Relson
z/OS Core Technology Design
