On Wed, 11 Jun 2025 01:09:36 +0000, Seymour J Metz <[email protected]> wrote:
>LAY is only 16-bit displacement; long is 20 bits. No one is willing to correct your screwups, least of all me. 16-bit displacements do not exist on z. Please summarize https://gemini.google.com/app/8ecb4a9bdc4d1361 for those who want to correctly understand displacements. Ask AI the right questions and it's willing to go into the details we refuse to include. >The fact that you can't find a use case doesn't mean that there isn't one, and >I've occasionally exploited S-cons over the years. Just because you can do something doesn't mean you should do it. There's nothing worse than irate customers because someone is being unnecessarily clever. JES2 hot start was most horrifying where a vendor caused IPL's in their use of IEFJRASP because they wanted to be first on the SSI. While obscure uses are use cases, they are exceptions that are used by a handful of people. Why suggest S-CON when there are common standard implementations. > Offsets are irrelevant in this context. Displacement is an "offset" relative to a register. Offset is very relative in this context. > it's up to Binyamin to determine whether his need is strong enough to justify > an RFE. No one is helped by suggesting RFE. With Binyamin's level of experience, he doesn't need reminding. By suggesting RFE to those who don't have the experience, they will think you are recommending their situation justifies it's use. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
