The structured programming macros originated from IBM Federal Systems Division and were called "Concept 14", freely available at the time. Many variants were created in subsequent years, both within IBM and in the mainframe open source community of the 1970's. IBM going to OCO impacted their development and adoption.
On Mon, Apr 27, 2020 at 4:19 AM Bernd Oppolzer <bernd.oppol...@t-online.de> wrote: > We had a similar package of SP (structured programming) macros in Germany, > very powerful (IF...THEN...ELSE...EIF, LOOP WHILE/UNTIL...ELOOP etc.). > Most interesting: there were always multiple conditions on IF and LOOP, > separated by asterisks, so > IF...THEN(1)...THEN(2)...THEN(3)...ELSE...EIF in fact was more a CASE > (or SWITCH) statement > and LOOP WHILE ... OUT(1)...OUT(2)...OUT(3)...ELOOP was very powerful, too > (and there was BREAK, too, of course). Some macros even supported > procedure blocks > with separate base registers, which allowed very large programs using > only two or four > base registers, if used correctly. > > The SP macros are still in use at different large mainframe users in > Germany; > when I started work at Allianz Versicherung (insurance) in 1990 ca., I > was told that they > originated from Quelle Versandhaus (mail order company, bankrupt in 2009), > but I am not sure about that. My first task at Allianz was to teach > ASSEMBLER to some 15 newbies, > and of course I had to teach the SP macros, too (every new program had > to make use of them, > the use of normal branch operations was forbidden). In 2014, I changed > the SP macros at Allianz Versicherung > to generate relative branches and support baseless coding, which was > about the last project I did there. > > Kind regards > > Bernd > > > Am 26.04.2020 um 19:35 schrieb Seymour J Metz: > > Those macros were not part of the assembler. > > As I recall there was a popular macro package called CONCEPT 101 (sp?) > floating around, > > and another package called PROC, but they didn't come from IBM. > > > > > > -- > > Shmuel (Seymour J.) Metz > > http://mason.gmu.edu/~smetz3 > > > > ________________________________________ > > From: IBM Mainframe Discussion List [IBM-MAIN@LISTSERV.UA.EDU] on > behalf of Mike Schwab [mike.a.sch...@gmail.com] > > Sent: Sunday, April 26, 2020 1:25 PM > > To: IBM-MAIN@LISTSERV.UA.EDU > > Subject: Re: C > > > > I was doing an internship in the Chicago area during the summer of > > 1984. They were using an assembler with IF macros. > > > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
