Assembling a DEADBEEFCODE filler I can see, but in dynamic storage? -- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 עַם יִשְׂרָאֵל חַי נֵ֣צַח יִשְׂרָאֵ֔ל לֹ֥א יְשַׁקֵּ֖ר
________________________________________ From: IBM Mainframe Assembler List <[email protected]> on behalf of Phil Smith III <[email protected]> Sent: Thursday, August 21, 2025 12:01 AM To: [email protected] <[email protected]> Subject: Re: Execute-Type Instructions External Message: Use Caution DEADBEEF! On August 20, 2025 11:58:03 PM Seymour J Metz <[email protected]> wrote: > I'm fully aware of that, must I've never run into a use case, while I've > had lots of cases where I wanted to fill an area with, e.g., X'00', X'40'. > > If I ver run into a situation where I want to initialize to a repeating > multibyte situation then MVC would be the way to go. I'm not saying it > won't happen, or that others haven't run ino it. just that I haven't yet. > > -- > Shmuel (Seymour J.) Metz > http://mason.gmu.edu/~smetz3 > עַם יִשְׂרָאֵל חַי > נֵ֣צַח יִשְׂרָאֵ֔ל לֹ֥א יְשַׁקֵּ֖ר > > > > > ________________________________________ > From: IBM Mainframe Assembler List <[email protected]> on > behalf of Robin Vowels <[email protected]> > Sent: Wednesday, August 20, 2025 10:52 PM > To: [email protected] <[email protected]> > Subject: Re: Execute-Type Instructions > > > External Message: Use Caution > > > On 2025-08-21 05:45, Seymour J Metz wrote: >> I've only ever used an overlapping move to fill a field with identical >> values, >> and MVCL with a zero source length works fine for that. > > An overlapping MVC can be used to propagate a half word, or full word, > or whatever ... > >> >> -- >> Shmuel (Seymour J.)
