APAR II07150
 
 
 
 
 
  APAR Identifier ...... II07150      Last Changed ........ 93/09/22
  SUMMARY OF CHANGES TO TSO/E REXX V2.1 THROUGH V2.4
 
 
  Symptom ...... AI CHANGES           Status ........... INTRAN
  Severity ................... 4      Date Closed .........
  Component .......... INFOV2LIB      Duplicate of ........
  Reported Release ......... 001      Fixed Release ............
  Component Name V2 LIB INFO ITE      Special Notice
  Current Target Date ..              Flags
  SCP ...................
  Platform ............
 
  Status Detail: Not Available
 
  PE PTF List:
 
  PTF List:
 
 
  Parent APAR:
  Child APAR list:
 
 
  ERROR DESCRIPTION:
  This info APAR will summarize major changes to the TSO/E
  REXX implementation.  Its intent is to assist in determining
  if a given feature is available on a given system by
  mapping the TSO/E release level to the features of REXX
  introduced in those releases.  The first step one should take
  is to determine what TSO/E release they are running on (below
  is a sample REXX exec that will provide a quick answer to
  that question).  The next step is to see if the feature in
  question is available at that release.  Below is a short
  overview of each TSO/E V2 release and what REXX features
  were introduced in each.  This is not a complete list,
  but it should help to find the major items.
  .
  Note that REXX was introduced in TSO/E Version 2.1 (XA and
  ESA).  Users of any TSO Version 1 product do not have the
  REXX interpreter.
  .
  .
  .
  To determine your TSO release, run the following REXX
  .
  /* REXX */
  SUBCOM 'TSO'
  if (RC=0) then
     do
     TSOVersion = SYSVAR('SYSTSOE')
     ver = (TSOVersion % 1000) // 10
     rel = (TSOVersion % 10) // 10
     mod = (TSOVersion) // 10
     say "Running TSO "ver"."rel"."mod
     end
  else     /* need TSO address space */
     say "This exec must be run in a TSO address space"
  exit 0
  .
  Changes to TSO/E REXX (see TSO/E REXX Reference SC28-2883
  "summary of changes" for complete information).
  .
  Changes for TSO 2.4:
   - binary strings
     user can specify a literal string followed by 'B'
     and that string is taken as a binary string.  This
     can cause problems for users who previously had
     variables named "b" abutted to the end of a literal
     such as:
          b = 'There' ; say "Hello "b
     Those users now get IRX0015I (error 15)
     for this situation.
   - %COMMENT and %NOCOMMENT added
   - B2X and X2B functions added
   - 3rd argument to VALUE function added
   - subsiduary lists added to DROP and PROCEDURE EXPOSE
   - new services added to CPICOMM host command environment
   - APPCMVS host command environment added
 
 
   - SIGNAL VALUE requires label name to
     resolve to UPPERCASE, otherwise label
     will not be found.
  .
  Changes for TSO 2.3.1
  .
   - support of a REXX compiler
   - new host command environments:
       ATTCHMVS, ATTACHPGM
       LINKMVS, LINKPGM
   - new programming services
       IRXSAY, IRXTST, IRXLIN, IRXHLT
   - environment block (ENVBLOCK) address parameter
     added to many programming services
   - return code 32 (RC32) added for invalid parameter
     list to many programming services
   - new return code 24 (RC24) added for I/O routine
     (IOROUT)
   - new functions to IRXRLT: GETRLTE and GETEVAL
   - new function to data stack routine: PULLEXTR
   - new function to userid routine: TSOID
   - new return code 4 (RC4) from EXECIO command
   - new immediate command (HE)
   - new option on EXECIO: OPEN
  .
  Changes for TSO 2.3.0
  .
   - new host command environments
     LU62, CPICOMM
   - changed default NOLOADDD flag which controls
     order of SYSEXEC/SYSPROC searching to cause
     SYSEXEC to be searched before SYSPROC.
  .
  Changes for TSO 2.2.0
  .
   - new host command environment CONSOLE
   - new external functions: GETMSG and SETLANG
   - new arguments to SYSVAR function:
       SYSPLANG, SYSSLANG, SYSDTERM, SYSKTERM, SOLDISP,
       UNSDISP, SOLNUM, UNSNUM, MFTIME, MFOSNM, MFJOB
       and MFSNMJBX
   - changes to IRXEXEC parameter 3 to allow called to
     determine if a syntax error was raised
   - new reason codes from IRXINIT: 25, 26 and 27
   - new function of load routine: TSOLOAD
   - language field in parmblock changed  from 2 bytes
     to 3 bytes in length
   - parmblock version changed from 0100 to 0200
 
 
  LOCAL FIX: