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Restructure of articles about IBM mainframe operating systems edit
After a big edit of MVS I concluded that the whole set of articles about IBM mainframe operating systems from System/360 onwards needed to be re-structured to minimise overlap and to make clearer the evolutionary relationships between these operating systems (notably in memory management, which is historically a major distinguishing feature). There is already some support for this proposal. Please add comments at Talk: MVS. Philcha 23:56, 20 October 2007 (UTC)
- Doesn't appear this gained any traction, removing the merge proposal - OS/360 and successors seems to be going down the path of being written summary style, about the hierarchy and genealogy of that and related technology, while this article will center around OS/VS1. Cander0000 (talk) 05:35, 28 November 2010 (UTC)
Rewrite of Job Control Language in progress edit
As part of the proposed restructure of articles on IBM mainframe operating systems (above), I've rewritten Job Control Language to: cover IBM's DOS/360 and its descendants as well as OS/360 and its descendants; focus more on the facilities and flavour of the 2 JCLs rather than on details of some statement types and some of their options. Please comment in Talk: Job Control Language. I'd be particulary grateful for more info on DOS/360 and its descendants, especially after 1980 - I only used DOS JCL a handful of times, and only in the late 1970s.
The rewrite does not currently take account of Truthanado's point in Talk: Job Control Language about use of "JCL" by computer suppliers other than IBM, which may entail further restructuring of articles about JCLs. Philcha 00:08, 21 October 2007 (UTC)
page size edit
S/370 hardware allows for page sizes of 2K or 4K. OS/VS2 (SVS) and MVS use 4K pages, and DOS/VS uses 2K pages. I believe OS/VS1 also uses 2K pages, but I am not sure about that. If someone knows, that would be nice to include. A later feature (sic) of S/370 is the 4K key feature, which removes the ability to use 2K pages, and so run systems that require them. Gah4 (talk) 00:07, 30 April 2020 (UTC)