Category:PL/M: Difference between revisions

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It is approximately a very small subset of PL/1 (though not a strict subset).
It is approximately a very small subset of PL/1 (though not a strict subset).
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<br>
The following statements were available:
The following statements from PL/1 (with some changes) were available:
* assignment
* assignment
* CALL
* CALL
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* PROCEDURE-END
* PROCEDURE-END
* RETURN
* RETURN
Additionally a number of compiler directive statements existed. There are no built-in I/O statements - calls to appropriate routines would be made instead.
Additionally, a HALT statement, interrupt related statements and a number of compiler directive statements existed.<br>
There are no built-in I/O statements - calls to appropriate routines would be made instead.
<br><br>
<br><br>
Unlike PL1, PL/M keywords are reserved and so cannot be used as identifiers.
Unlike PL1, PL/M keywords are reserved and so cannot be used as identifiers. The Boolean operators are reserved words: AND, OR and NOT instead of the symbols: &, |, ¬.
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<br>
Available datatypes (BYTE, WORD, etc.) reflected the available types of the microprocessors.
Available datatypes (BYTE, WORD, etc.) reflected the available types of the microprocessors.

Revision as of 19:14, 27 September 2017

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Language
PL/M
This programming language may be used to instruct a computer to perform a task.
See Also:


Listed below are all of the tasks on Rosetta Code which have been solved using PL/M.

PL/M (Programming Language for Microcomputers) is (as the name suggests) a language designed for microcomputer software, particularly system software.

It is approximately a very small subset of PL/1 (though not a strict subset).
The following statements from PL/1 (with some changes) were available:

  • assignment
  • CALL
  • DECLARE
  • DO-END
  • IF-THEN-ELSE
  • GOTO
  • PROCEDURE-END
  • RETURN

Additionally, a HALT statement, interrupt related statements and a number of compiler directive statements existed.
There are no built-in I/O statements - calls to appropriate routines would be made instead.

Unlike PL1, PL/M keywords are reserved and so cannot be used as identifiers. The Boolean operators are reserved words: AND, OR and NOT instead of the symbols: &, |, ¬.
Available datatypes (BYTE, WORD, etc.) reflected the available types of the microprocessors.

The declaration of structures in PL/M does not use level-numbers, instead a syntax more like C structs is used, e.g.: <lang PLM>DECLARE A STRUCTURE ( B BYTE, C WORD );</lang> declares a structure A with two members, B and C.

PL/M was used in the development of the CP/M operating system and associated applications.
Compilers were available for a number of microprocessors including the 8080 Z80.

See Also

Subcategories

This category has the following 3 subcategories, out of 3 total.

@

Pages in category "PL/M"

The following 166 pages are in this category, out of 166 total.

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A

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