IBM REXX Family

   REXX with MVS TSO/E V2

 
 

19 Apr 1988
Copyright © International Business Machines Corporation, 1988. All Rights Reserved

LETNO      ZP88-0218
DATE       880419
           Programming Announcement
TITLE      TSO EXTENSIONS (TSO/E) VERSION 2
           o 5685-025

ABSTRACT   IBM  announces  TSO  Extensions Version  2,  which  provides  the
           INTERACTIVE  capability for  MVS/System Product  (TM) Version  3,
           including  all  the  functions  of  TSO/E  Version  1,  and  many
           significant new functions.

TEXT       TSO/E Version 2  will be the base for  future Systems Application
           Architecture  (SAA)   enhancements  in   TSO.  To   enhance  that
           environment, TSO/E  Version 2 supports the  Restructured Extended
           Executor (REXX) language.  TSO/E Version 2 also  uses the Virtual
           Lookaside Facility  (VLF) to provide performance  enhancements to
           CLISTs.  TSO/E  Version 2 takes  advantage of the  new Enterprise
           Systems Architecture/370 (ESA/370 (TM)).
           PLANNED GENERAL AVAILABILITY:
           MVS/ESA Feature: Fourth Quarter, 1988
           MVS/XA Feature : First Quarter, 1989
           National Language  Support (NLS)  translations will  be available
           Second Quarter, 1989.

           *****************************************************************
           *                                                               *
           *  IBM PROGRAMMING INFORMATION                    APRIL 1988    *
           *                                                               *
           *  IBM PROGRAMMING INFORMATION                                  *
           *                                 for Europe, the Middle East   *
           *  IBM PROGRAMMING INFORMATION               and Africa.        *
           *                                                               *
           *****************************************************************
           *                                                               *
           * This document is provided as general customer information     *
           * only. IBM products and services which are announced and       *
           * available in your country can be ordered under the applicable *
           * standard agreements, terms, conditions and prices in effect   *
           * at the time. For further information please contact your      *
           * local IBM representative.                                     *
           *                                                               *
           *****************************************************************
           =================================================================
                                                                   ZP88-0218
           TSO EXTENSIONS (TSO/E) VERSION 2
           o 5685-025
           IBM  announces  TSO  Extensions Version  2,  which  provides  the
           INTERACTIVE  capability for  MVS/System Product  (TM) Version  3,
           including  all  the  functions  of  TSO/E  Version  1,  and  many
           significant new functions.
           TSO/E Version 2  will be the base for  future Systems Application
           Architecture  (SAA)   enhancements  in   TSO.  To   enhance  that
           environment, TSO/E  Version 2 supports the  Restructured Extended
           Executor (REXX) language.  TSO/E Version 2 also  uses the Virtual
           Lookaside Facility  (VLF) to provide performance  enhancements to
           CLISTs.   TSO Extensions  Version 2  takes advantage  of the  new
           Enterprise Systems Architecture/370 (ESA/370 (TM)).
           HIGHLIGHTS
           o TSO/E Version 2 MVS/ESA Feature
           - REXX language support
           - Utilization of Enterprise Systems Architecture/370 (ESA/370)
           - Installation  simplification  enhancements,  including  DYNAMIC
           updates
           - Enhancements  to  the  Application   Manager  function  of  the
           Information Center Facility
           - Additional MVS/ESA Feature enhancements
           o TSO/E Version 2 MVS/XA Feature
           - REXX language support
           - Additional enhancements
           MVS/ESA FEATURE DESCRIPTION
           REXX
           TSO Extensions Version 2 provides REXX language support for users
           in the TSO/E environment as well  as MVS applications outside the
           TSO/E  environment.  REXX,  a   high-level  procedural  language,
           enables  programmers  to  intermix REXX  instructions  and  TSO/E
           commands  in programs  called  EXECs.  EXECs  and  CLISTs can  be
           combined in an  application, call each other and can  call and be
           called  by  existing  CLISTs  and  TSO/E  programs.  REXX  is  an
           attractive alternative to  the CLIST language, as  the REXX EXECs
           are   much  easier   to   code,   yielding  greater   programming
           productivity.
           The  procedures interface  for  Systems Application  Architecture
           (SAA) is  a subset of REXX,  therefore the elements of  REXX that
           are listed in the procedures interface are easily portable across
           IBM systems.
           UTILIZATION OF ESA/370
           TSO Extensions Version 2 takes advantage of, and supports the new
           Enterprise  Systems  Architecture/370  (ESA/370).    Use  of  the
           Virtual Lookaside  Facility (VLF)  in CLIST  and REXX  processing
           helps to  reduce data set I/O  and DASD contention.  TEST command
           enhancements enable  users to  test and  debug programs  that use
           Advanced Address Space Facilities.
           For  detailed   information  of  ESA/370  refer   to  Programming
           Announcements Enterprise Systems  Architecture/370 and MVS/System
           Product  Version  3  (ZP88-0153) dated  February  15,  1988,  and
           MVS/System Product Version 3 Release 1.0 dated April 19, 1988.
           INSTALLATION SIMPLIFICATION
           System programmers can list and  DYNAMICALLY update TSO/E Version
           2 defaults without having to re-IPL the MVS system.
           A new Table Look-up service enables programmers to determine if a
           given program  or command  is defined as  authorized, its  use is
           prohibited in the background, or it  is supported through the TSO
           Service Routine.
           INFORMATION CENTER FACILITY ENHANCEMENTS
           The Application Manager administration dialogs have been enhanced
           to  allow  administrators  to   create  installation  files  from
           existing  applications,  to replace  applications  without  first
           deleting  them,  and to  specify  the  CLIST and  REXX  libraries
           required by each application.
           ADDITIONAL MVS/ESA FEATURE ENHANCEMENTS
           DYNAMIC DEFINITION OF  CLIST AND REXX EXEC  LIBRARIES: The ALTLIB
           command enables users  to DYNAMICALLY define user  or application
           libraries containing  CLISTs and REXX EXECs.   Dynamic definition
           of   user  and   application  libraries   provides  a   potential
           performance benefit by  reducing the time it takes  to search for
           these libraries.
           NEW   EXITS:   TSO/E   Version  2   offers   installations   many
           opportunities  to   customize  their  systems  using   new  exits
           associated with REXX processing.
           TESTING APF-AUTHORIZED  PROGRAMS: The TESTAUTH  command provides,
           in an  APF-authorized environment,  the functions  that the  TEST
           command provides in a non-APF authorized environment.
           DATA  FACILITY   STORAGE  MANAGEMENT   SUBSYSTEM  (DFSMS):    TSO
           Extensions  Version   2  supports   the  Data   Facility  Storage
           Management Subsystem  (DFSMS) function  of the  MVS/Data Facility
           Product (MVS/DFP) (TM) Version 3  Product. Users can separate the
           logical   storage   requirements   from   the   physical   device
           characteristics when allocating a data set.
           DYNAMIC  DEFINITION  AND  FREEING  OF  OUTPUT  DESCRIPTORS:   TSO
           Extensions Version 2 enables users to dynamically define and free
           named sets of output descriptors.
           CALL COMMAND  The CALL Command  processor is enhanced  to support
           SAA languages  by enabling programs  to pass parameters  in upper
           and lower case.  This enhancement supports SAA as  the C language
           interface of SAA requires parameter lists to be mixed case.
           MVS/XA FEATURE DESCRIPTION
           REXX, Data  Facility Storage Management Subsystem  (DFSMS), Table
           Look-up and  Call Command functions are  the same as  the MVS/ESA
           Feature, except that they do not utilize ESA/370.
           NATIONAL LANGUAGE SUPPORT (NLS)
           This product contains  World Trade National Language  Support for
           eight  (8)  languages  (Brazilian   Portuguese,  Danish,  French,
           German,  Spanish, Kanji,  Hanguel, and  Traditional Chinese)  for
           both the MVS/ESA and MVS/XA Features.
           PUBLICATIONS
           For  ordering information  about publications  that describe  TSO
           Extensions Version 2,  see the TSO/E GENERAL  INFORMATION manual,
           GC28-1869, at general availability.
           UNLICENSED DOCUMENTATION: A memo, program directory, and one copy
           of the following publications are supplied automatically with the
           basic machine- readable material:
               Title                                    Order Number
            --------------                              ------------
           Introducing TSO Extensions Version 2         GC28-1868-00
           TSO/E V 2 Library Guide                      GC28-1866-00
           TSO/E V 2 Master Index                       GC28-1867-00
           TSO/E V 2 General Information                GC28-1869-00
           TSO/E V 2 Licensed Program Specifications    GC28-1870-00
           TSO/E V 2 Customization                      SC28-1872-00
           TSO/E V 2 Administration                     SC28-1873-00
           TSO/E V 2 Programming Guide                  SC28-1874-00
           TSO/E V 2 Programming Services               SC28-1875-00
           TSO/E V 2 CLISTs                             SC28-1876-00
           TSO/E V 2 Programmers Guide to the           SC28-1877-00
           Server-Requester Programming Interface
           TSO/E V 2 System Programming Command Ref     SC28-1878-00
           TSO/E V 2 Primer                             GC28-1879-00
           TSO/E V 2 User's Guide                       SC28-1880-00
           TSO/E V 2 Command Reference                  SC28-1881-00
           TSO/E V 2 REXX User's Guide                  SC28-1882-00
           TSO/E V 2 REXX Reference                     SC28-1883-00
           VM/PC User's Guide for MVS Host Services     SC28-1884-00
           TSO/E V 2 VM/PC Commands for Host            SV23-0003-00
           Services (Diskette)
           TSO Messages                                 GC28-1885-00
           TSO/E V 2 Quick Reference                    GX23-0026-00
           TSO/E V 2 Directory of Programming           GC28-1887-00
           Interfaces for Customers
           LICENSED DOCUMENTATION:
           The following licensed material and  microfiche will be available
           from   Copenhagen.  To   order,   contact   your  IBM   marketing
           representative.
           The first  copy is available at  no charge to licensees  of basic
           material.
              Title                      Order Number
           TSO/E System Diagnosis:       LY28-1886-00
           Guide and Index
           TSO/E System Diagnosis:       LY28-1887-00
           REXX and CLIST
           TSO/E System Diagnosis:       LY28-1888-00
           Command Processors A-L
           TSO/E System Diagnosis:       LY28-1889-00
           Command Processors M-Z
           TSO/E System Diagnosis:       LY28-1890-00
           Terminal Monitor Program
           and Service Routines
           TSO/E Session Manager         LY28-1891-00
           Logic Manual
           TSO/E Data Areas              LYB8-1892-00
           TECHNICAL INFORMATION
           SPECIFIED OPERATING ENVIRONMENT
           MACHINE REQUIREMENTS:
           HARDWARE REQUIREMENTS MVS/ESA  FEATURE: TSO/E Version 2  will run
           on any IBM  processor supported by MVS/System  Product Version 3.
           TSO Extensions Version  2 operates on any  IBM terminal currently
           supported by MVS/System  Product Version 3, and  supported by IBM
           Network  Program Products  as  a  TSO terminal.  The  full-screen
           logon, the  Interactive Data  Transmission Facility,  the Session
           Manager, and the Information Center Facility support:
           o IBM 3270 Information Display System Terminals
           - 3275 Models 2 and 12
           - 3276 Models 2, 3, 4, 12, 13, and 14
           - 3277 Model 2
           - 3278 Models 2, 3, 4, and 5
           - 3279 Models  2A, 2B, 2X,  3A, 3B, 3X,  S2A, S2B, and  S3G (base
           color mode).
           o IBM 3178 Display Terminal Models C1, C2, C3, and C4
           o IBM 3179 Display Terminal Model 1
           o IBM 3179  Display Terminal Model  G (Supported  in alphanumeric
           mode)
           o IBM 3180 Display Terminal Models 100 and 110
           o IBM 3191 Display Terminal Models A30,  A40, B30, B40, D, E, and
           L
           o IBM 3192 Color Display Terminal Models A, B, C, D, F, G, L, and
           W
           o IBM 3194 Display Terminal
           o IBM 3290 Information Panel
           o IBM Personal Computer (configured for 3278/79 support)
           o Any other  IBM terminal  that functions  in compatibility  mode
           with the terminals listed above.
           Notes:
           o A minimum screen size of 24 lines by 80 characters is required.
           o The following  Information Center  Facility supported  licensed
           programs have special terminal  considerations.  See the specific
           program descriptions for details:
           - GDDM (5748-XXH)
           - Information Center Facility APL-based products
           To fully use all the PRINTDS SYSOUT operands requires an IBM 3800
           Printing Subsystem.
           HARDWARE REQUIREMENTS  MVS/XA FEATURE:  TSO Extensions  Version 2
           will run on any IBM processor supported by the MVS/System Product
           Version 2. TSO Extensions Version 2  operates on any IBM terminal
           currently  supported   by  MVS/System  Product  Version   2,  and
           supported by IBM Network Program Products  as a TSO terminal. The
           full-screen logon,  the Interactive  Data Transmission  Facility,
           the Session Manager, and the  Information Center Facility support
           is the same as the MVS/ESA Feature.
           PROGRAMMING REQUIREMENTS:
           SOFTWARE  REQUIREMENTS  MVS/ESA  FEATURE:  The  TSO/E  Version  2
           MVS/ESA Feature  requires MVS/System  Product Version  3, Release
           1.0, or later with its co-requisites.
           TSO  Extensions  Version  2  Information  Center  Facility  users
           require  ISPF Version  2 Release  3 (5665-319),  or a  subsequent
           release of ISPF.
           SOFTWARE REQUIREMENTS  MVS/XA FEATURE:  TSO Extensions  Version 2
           MVS/XA Feature requires MVS/SP Version  2, Release 2.0, or later,
           with  its   co-requisites.  Data   Facility  Storage   Management
           Subsystem (DFSMS) is supported 3Q89.
           TSO  Extensions  Version  2  Information  Center  Facility  users
           require  ISPF Version  2 Release  3 (5665-319),  or a  subsequent
           release of ISPF.
           COMPATIBILITY/MIGRATION:
           TSO/E Version  2 is a complete  replacement for TSO/E  Version 1.
           Most applications will run with  no modifications, for either the
           MVS/XA or the MVS/ESA Feature, except as noted below.
           There  may be  some  incompatibilities  in migrating  from  TSO/E
           Version  1 Release  4 to  TSO/E  Version 2  if user  applications
           create Stack Elements without using the TSO/E Stack Service.
           PERFORMANCE CONSIDERATIONS:
           Functional  enhancements  to  both TSO/E  Version  2  and  MVS/SP
           Version  3 provide  potential  for  performance improvements  for
           installations  running   complex  CLISTs  with   significant  I/O
           contention for CLIST libraries.
           Significant  improvements  in  processing   of  CLISTs  has  been
           achieved  through the  use of  a  new MVS/SP  Version 3  service,
           Virtual Lookaside Facility (VLF). An internal representation of a
           CLIST is stored in VLF via  the Advanced Address Space Facilities
           and is  then retrieved and executed  from VLF until the  CLIST is
           modified.
           Measurements  of various  CLISTs  in  a test  environment  showed
           improvements ranging from 10% to 90%.
           USER GROUP REQUIREMENTS:
           SATISFACTION  OF USER  REQUIREMENTS:  TSO/E  Version 2  addresses
           numerous customer requests and satisfies (partially or fully) the
           following  requirements  submitted  by the  designated  IBM  User
           Group.
           ENHANCEMENT                    USER REQUIREMENT
           Authorized LOGON               GUIDE GO1TSO85004
           Authorized LOGOFF              GUIDE GO1TSO85001
           REXX                           SHARE SOMVSE85150
                                          EUROP ESTSOS87007
           Authorized testing             SHARE SBMVSI83816
                                          GUIDE GO1TSO85006
           MVS Interactive Strategy       GUIDE GO1TSO00102
           Direction White Paper

Note: the above is shown in the original announcement letter format.