IBM announced VM/SP Release 3 with REXX on February 1, 1983 and didn't announce TSO/E Version 2 with REXX until April 19, 1988, so I'd be surprised if IBM was working on them concurrently.
And, yes, I prefer REXX to CLIST, EXEC and EXEX2, although it is missing a few things. -- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 ________________________________________ From: IBM Mainframe Assembler List [ASSEMBLER-LIST@LISTSERV.UGA.EDU] on behalf of Paul Gilmartin [00000014e0e4a59b-dmarc-requ...@listserv.uga.edu] Sent: Monday, February 21, 2022 12:44 PM To: ASSEMBLER-LIST@LISTSERV.UGA.EDU Subject: Re: Interpreting Explicit Decimal Numbers On Feb 21, 2022, at 10:12:49, Tom Marchant wrote: > > On Sat, 19 Feb 2022 09:33:25 -0700, Bob Raicer <r...@raicer.com> wrote: > >> I didn't have any of the IBM z/VSE publications on my system, so I. >> GIYF. You could get that, free, from: <http://publibfp.dhe.ibm.com/epubs/pdf/iesrre32.pdf> If it clutters your drive too much, drag it to the Trash when you finish. Related publications from links at: <https://www.ibm.com/docs/en/zvse/6.2?topic=pdf-library> >> used citations from the z/OS publication and the corresponding >> publication regarding the Rexx implementation for Microsoft Windows >> and Linux. The latter two are produced by the Rexx Language >> Association and the original implementation was based upon the IBM >> implementation for IBM OS/2, Microsoft Windows, and IBM AIX. In >> October 2004 IBM issued announcement ENUS904-207 which stated: > > Just to be clear, the original implementation of ReXX was for VM in about > 1980, well before OS/2. > Roughly, I understand (from TRL?). Rexx was developed ini concurrent efforts on MVS and CMS. It soon took root on CMS but languished on MVS for a couple decades until TSL/E 2.0. No good explanation for the difference. CLIST is fully as repulsive as EXEC2. "Rexx", I understand, partly because of trademark entanglements with "Rex". -- gil
