On Wed, 23 Oct 2024 03:44:57 +0000, Seymour J Metz <[email protected]> wrote:
>No, that puts the BXH at the end, not at the beginning. Since IBM didn't document your specific use case, the only other possibility is if an undocumented form of DO WHILE=(BXH,R1,R2) exists where the IF / DO condition handles the BXH instruction correctly. I wouldn't hold much hope because it typically requires a CC or comparator. Maybe IBM has a special comparator for instructions that combine branch with other functionality (e.g. BXH).
