OS/390 v2.10 had PTFs to add 64 bit mode.
z900 announcement z/OS 1.01 had 64 bit mode included.
Default 64 bit with 1.04.
About 1.10 64 bit required.
z14 Around 2.01 IPLed in 64 bit.

On Sat, Jan 14, 2023 at 5:07 PM Steve Thompson <[email protected]> wrote:
>
> I get the understanding that it and the current release of z/VSE
> from IBM are effectively the same (kinda like OS/390 V2.10 and
> z/OS 1.1 -- assuming my memory is correct on the last release of
> OS/390):
>

----------------------------------------------------------------------
For IBM-MAIN subscribe / signoff / archive access instructions,
send email to [email protected] with the message: INFO IBM-MAIN

Reply via email to