Paul, Unlike Hercules, z/Architecture is part of a business, and, as such, a business value needs to be made in order to get support for changes, in particular radical changes like AM32. "it would be nice" and "but it's so cool" aren't business rationalizations for the amount of potentially broken customer code that would result from the change you propose. In order to not have to recompile all applications, or maintain strict bounds between 32 bit apps and 64 bit apps like most other 64 bit architectures, I will gladly sacrifice 2 GiB out of the massive virtual space offorded by a 64 bit address space. If your mythical AM32 was invented, applications would still have to switch back to AM31 before calling other AM31 code that expects a variable length paramter list. I still fail to see any business value to IBM's customers in what you are proposing.
Wayne Driscoll Rocket Software Note - All opinions are strictly my own. -----Original Message----- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Paul Edwards Sent: Friday, May 11, 2018 6:23 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: GETMAIN LOC=32 On Fri, 11 May 2018 05:32:46 -0500, Paul Edwards <mutazi...@gmail.com> wrote: >What I did was provide an option such that any request to activate AM31 >with BSM instead activates AM32. BTW, it would be good if z/Arch had a similar option. ie you can configure the hardware so that any attempt to activate AM24 can be overridden to instead activate AM31/32/64. Similarly an override for any attempt to activate AM31, and a downgrade option for AM64 to activate AM24/31/32. That way you can set all the overrides to AM64 and ensure that everything running on your system is AM64-compliant, and the system never leaves AM64. A z/OS shop would become a pure AM64 environment. Unlike Windows and x64 hardware, 32-bit software can be run natively under AM64. It doesn't need a special mode. Basically z/Arch hardware is superior to x64 and this would be a great selling point I think - a pure 64-bit environment, even when running 32-bit software. BFN. Paul. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ================================ Rocket Software, Inc. and subsidiaries ■ 77 Fourth Avenue, Waltham MA 02451 ■ Main Office Toll Free Number: +1 855.577.4323 Contact Customer Support: https://my.rocketsoftware.com/RocketCommunity/RCEmailSupport Unsubscribe from Marketing Messages/Manage Your Subscription Preferences - http://www.rocketsoftware.com/manage-your-email-preferences Privacy Policy - http://www.rocketsoftware.com/company/legal/privacy-policy ================================ This communication and any attachments may contain confidential information of Rocket Software, Inc. All unauthorized use, disclosure or distribution is prohibited. If you are not the intended recipient, please notify Rocket Software immediately and destroy all copies of this communication. Thank you. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
