TELEX Structured Macros





        This  directory  contains  structured  macros  which
support the development of TELEX software.  However, many of
them have global  applications  in  all  types  of  software
development  using  the VMS MACRO-32 assembler.  Some of the
constructs  in  this  subdirectory  are  unimplemented   and
currently  under  development.   The  remainder work and are
useful and make coding much easier in MACRO-32.



                           BRANCH

        Performs unconditional branches to a given location.



                            CASE

        Support of the CASE construct.



                             DO

        Support of the DO looping construct.



                            EIS

        Extensions to the VMS  instruction  set  to  support
conditional word-offset branches and other useful functions.



                           ERROR

        Error processing macro.



                          EVALUATE

        Conditional   evaluation   and    syntax    parsing.
Currently  unimplemented.   Required  for  most of the other
structured constructs.
Mostek OPS Spring 1983 SIG Tape Submission            Page 2


                             IF

        IF-THEN-ELSE construct support.



                           LABEL

        Defines a label which has been generated on  a  user
assembly label stack.  See STACK.



                            LOOP

        LOOP-EXITIF-ENDLOOP construct.



                           REPEAT

        REPEAT-UNTIL construct.



                           STACK

        Assembly stack manipulation macros.   MACRO-32  does
not  support  character  string  assembly-time constants, so
this set of macros allows unique labels to  be  defined  and
stored  on a label stack for later use in defining labels or
generating instructions.



                           STRING

        MACRO-32   does   not   support   character   string
assembly-time  variables.  This set of macros simulates this
facility and allows  the  assembly  language  programmer  to
create  a vector of character strings and PUSH, POP, APPEND,
and output these character  strings  to  the  assembler.   A
workaround  to the current limitations in the assembler, and
much  better  than  many  other  solutions  to  the  current
variable limitations.



                           WHILE

        Support of the DO-WHILE construct.