Peter Relson discussed RMODE(64) implications quite a few times on IBM-Main over the last few years.
Definite progress has been made in the area, but I do not think everything is supported. The message to ISVs has been to inform IBM when something reasonable does not work with RMODE(64). Personally, I use RMODE(64) only for non-executable stuff like meta-data and tables. I have not reached a point where the size of my executables warrant a move above the bar. Rob Scott Rocket Software ________________________________ From: IBM Mainframe Discussion List <[email protected]> on behalf of Binyamin Dissen <[email protected]> Sent: 05 August 2025 6:26 AM To: [email protected] <[email protected]> Subject: Re: RMODE64 services EXTERNAL EMAIL On Mon, 4 Aug 2025 13:57:30 -0400 Joseph Reichman <[email protected]> wrote: :>I see services such as WTO :>Run 24,31 and 64 :>But that refers to AMODE :>Wondering about RMODE :>Since I see SYSSTATE with a RMODE64 parm :>Guess there must be :>Would anyone know anything about this or whether they are documented In general, services entered via PC or SVC do not care about the A/RMODE as the system handles it. The linkage stack and the XSB structure now has the extended PSW. Looking at 2.5 WTO I don't see any qualifications about the location of control parameters other than in the primary address space, which would imply above the BAR is OK. However, there is a general restriction "A program running in AMODE 64 should not call a service with data, parameters, or parameter addresses that are higher than 2 gigabytes, unless the individual service description indicates that it is allowed." So I do not know. -- Binyamin Dissen <[email protected]> http://www.dissensoftware.com<http://www.dissensoftware.com> Director, Dissen Software, Bar & Grill - Israel ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] 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 [email protected] with the message: INFO IBM-MAIN
