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- From: muller@src.dec.com (Eric Muller)
- Newsgroups: comp.lang.modula3,news.answers
- Subject: Modula-3 Frequently Asked Questions (FAQ)
- Message-ID: <1992Oct1.191651.4158@src.dec.com>
- Date: 1 Oct 92 19:16:51 GMT
- Article-I.D.: src.1992Oct1.191651.4158
- Expires: 15 Nov 1992 00:00:00 GMT
- Sender: news@src.dec.com (News)
- Followup-To: comp.lang.modula3
- Organization: DEC Systems Research Center
- Lines: 123
- Approved: news-answers-request@MIT.Edu
-
- Archive-name: Modula-3-faq
- Last-modified: Aug 5 1992
-
-
- Modula-3 Frequently Asked Questions
- ===================================
-
-
- What is Modula-3 ?
-
- The goal of Modula-3 is to be as simple and safe as it can be while
- meeting the needs of modern systems programmers. Instead of
- exploring new features, we studied the features of the Modula
- family of languages that have proven themselves in practice and
- tried to simplify them into a harmonious language. We found that
- most of the successful features were aimed at one of two main
- goals: greater robustness, and a simpler, more systematic type
- system.
-
- Modula-3 descends from Mesa, Modula-2, Cedar, and Modula-2+. It
- also resembles its cousins Object Pascal, Oberon, and Euclid.
-
- Modula-3 retains one of Modula-2's most successful features, the
- provision for explicit interfaces between modules. It adds objects
- and classes, exception handling, garbage collection, lightweight
- processes (or threads), and the isolation of unsafe features.
-
-
- Is Modula-3 a superset of Modula-2 ?
-
- No; valid Modula-2 programs are not valid Modula-3 programs.
-
-
- Where can I get a description of Modula-3 ?
-
- The definition of Modula-3 is contained in:
-
- System Programming with Modula-3
- Edited by Greg Nelson
- Prentice Hall Series in Innovative Technology
- ISBN 0-13-590464-1
- L.C. QA76.66.S87 1991
-
- also known as SPwM3. Here is the table of contents:
-
- 1. Introduction
- 2. Language Definition
- 3. Standard Interfaces
- 4. An Introduction to Programming with Threads
- 5. Thread Synchronization: A Formal Specification
- 6. I/O Streams: Abstract Types, Real Programs
- 7. Trestle Window System Tutorial
- 8. How the Language Got its Spots
-
- Chapters 2 and 3 have been reprinted in Sigplan Notices, Volume 27,
- Number 8, August 1992, pp 15-42.
-
- Sam Harbison has written a book about Modula3:
-
- Modula-3
- Samuel P. Harbison
- Prentice Hall, 1992
- ISBN 0-13-596396-6
-
- as well as an overview article, "Modula-3", in Byte, Vol. 15,
- Number 12, October 1990, p 385.
-
-
- Where can I get information on Modula-3 ?
-
- There is a Usenet newsgroup, comp.lang.modula3. The archives of
- that group are available via anonymous ftp from gatekeeper.dec.com
- in pub/DEC/Modula-3/comp.lang.modula3. If you do not have
- access to Usenet, there is a relay mailing list; send a message to
- m3-request@src.dec.com to be added to it.
-
-
- Where can I get an implementation ?
-
- There is only one implementation available today. It has been built
- by SRC and is available via anonymous ftp from gatekeeper.dec.com in
- pub/DEC/Modula-3/release. Contributed software can be found
- in pub/DEC/Modula-3/contrib.
-
- The current version, 2.07, implements the language defined in SPwM3.
- There are versions for the following machines:
-
- AIX386 IBM PC running AIX/PS2,
- AP3000 Apollo DN4500 running Domain/OS
- ARM Acorn R260 running RISC iX 1.21
- DS3100 DECstation 3100 and 5000 running Ultrix 4.0 and 4.2
- HP300 HP 9000/300 running HP-UX 8.0
- IBMR2 IBM R6000 running AIX 3.1,
- IBMRT IBM RT running IBM/4.3,
- NEXT NeXT running ?
- SPARC SPARCstation running SunOS 4.1.x
- SUN3 SUN3 running SunOS
- UMAX Encore Multimax running UMAX 4.3 (R4.1.1)
- VAX VAX running Ultrix 3.1
-
- SRC Modula-3 includes a user manual, compiler, runtime library,
- some libraries and a few other goodies (see below).
-
- The compiler generates C as an intermediate language and should be
- fairly easy to port. Except for the very lowest levels of the
- thread implementation, the entire system is written in Modula-3.
-
-
- What if I don't have ftp access ?
-
- Unfortunately, we cannot deliver Modula-3 other than by
- anonymous ftp. Your best bet is to post a message to
- comp.lang.modula3, in the hope that somebody with ftp
- access can make a tape or floppy for you.
-
-
- Can I contribute Modula-3 software ?
-
- Certainly. Send us what you are willing to share, be it programs,
- libraries or other things. We'll put them in the distribution.
-
- --
- Eric.
-