I removed the 700/7000 line from this table. Charles Webb, a System z processor engineer and IBM Fellow wrote this: "I would be inclined to drop the 700/7000 line as well. This was a predecessor to S/360 and contributed a lot of genetic material, but I think of the real "mainframe" era as starting with S/360 and the common ISA across multiple computer models." — Preceding unsigned comment added by Davidlharlan (talk • contribs) 15:35, 23 October 2012 (UTC)[reply]
Fair enough. The thought wasn't about the importance of the 700/7000 but about the definition of the mainframe category itself. I have no problem with your interpretation if you feel strongly about it. Davidlharlan (talk) 17:16, 23 October 2012 (UTC)[reply]
Thanks. Yeah, I do feel strongly. The 700/7000 series created and defined the mainframe category at IBM. I don't think anyone who was around at the time would dispute this. For example, when the mid-size 1401/1410 architecture grew to mainframe size, it got a 7000 series nomenclature, the 7010. Of course their capabilities look puny by today's standards (so does the System/360) but they were awe inspiring in their time.--agr (talk) 21:12, 23 October 2012 (UTC)[reply]
I find it questionable to label the 1400 series as mainframes, although the 7010 certainly is a mainframe, and puzzling that the list doesn't include, e.g.,
@Guy Harris: While I understand the motivation for changing
[[IBM System/390#History|ESA/370]]to[[IBM System/370#Subsequent enhancements|ESA/370]], IBM System/390 contains technical details on ESA/370 while IBM System/370 does not. I believe that the best way to proceed would be to retitle ESA/390 as ESA/370 and ESA/390 rather than to create a separate ESA/370 article or to copy most of the material in ESA/390toS/370. -- Shmuel (Seymour J.) Metz Username:Chatul (talk) 12:15, 23 April 2023 (UTC)[reply]
My preference would be to have separate articles for 370, XA and ESA, with sections in S/370 for XA, ESA/370 and ESA/390, with {{main}} templates. ESA/370 and ESA/390 are too similar to justify separate articles. — Preceding unsigned comment added by Chatul (talk • contribs) 23:53, 23 April 2023 (UTC)[reply]
Step 2's done for now, as IBM System/370-XA; rename it to the longer name if you think that makes more sense. It also needs to have the section on the I/O subsystem changes filled in, and could use information on SIE as well. Guy Harris (talk) 11:24, 4 May 2023 (UTC)[reply]