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- Version 5.9 of Icon for MS-DOS
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- This diskette contains executable binary files for Version 5.9
- of Icon running under MS-DOS. This implementation should run on
- an IBM PC, XT, AT or other 8086/88/186/286 family computer. IBM
- PC hardware equivalence is not required; only DOS compatibility
- is needed: PC- or MS-DOS Version 2.0 or above. It is a small
- memory model implementation and requires 192 KB of memory during
- execution. An 8087 will be used if it is present.
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- This implementation was done by Cheyenne Wills of Mechan-
- icsburg, Pennsylvania. He has placed it in the public domain to
- make it as widely available as possible. He also provided the
- technical information contained in this document.
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- This material is being distributed by the University of
- Arizona as a service to the computing community. It makes no war-
- ranties of any kind as to the correctness or suitability of this
- material for any application.
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- This diskette can be copied and used freely, provided the
- material on it is not modified and that appropriate credit is
- given where applicable. Persons who obtain a copy of this
- diskette from a secondary source are encouraged to register their
- copy by sending a completed copy of the registration form on this
- diskette (REGIS.FRM) to:
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- Icon Project
- Department of Computer Science
- The University of Arizona
- Tucson, AZ 85721
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- Persons who register their copies will receive the Icon
- Newsletter, which is published aperiodically, free of charge and
- will be notified of corrections, new releases, and so forth.
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- Documentation
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- Version 5 of the Icon programming language is described in the
- following book:
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- The Icon Programming Language, Ralph E. Griswold and Madge
- T. Griswold, Prentice-Hall, Inc., Englewood Cliffs, New
- Jersey. 1983. ISBN 0-13-449777-5.
-
- A brief overview of Icon is contained in the file OVERVIEW.DOC on
- this diskette. Features that have been added to Version 5 of
- Icon since the book was written are described in the file
- EXTEN.DOC. Printed copies of these documents are available on
- request from the Icon Project at the address listed above.
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- Installing MS-DOS Icon
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- The four executable binary files need to run Icon are:
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- ICONT.EXE command processor
- ITRAN.EXE translator
- ILINK.EXE linker
- ICONX.EXE interpreter
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- These files can be copied to any location that is accessible via
- the current PATH setting.
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- Running MS-DOS Icon
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- Icon programs must have the extension .icn. An Icon program in
- the file prog.icn is translated by
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- icont prog.icn
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- The result is a file with the name prog (with the extension
- removed). This file can be run by
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- iconx prog
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- Alternatively, the program can be run after translation by
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- icont prog.icn -x
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- In this case the file prog also is left and can be run subse-
- quently using iconx.
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- More information about running Icon is contained in RUN.DOC.
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- Testing MS-DOS Icon
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- There are a few programs on the distribution diskette that may
- be used for testing Icon:
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- hello.icn This program prints the version, installation
- options, time, and date. Run this test as
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- icont hello.icn -x
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- cross.icn This program prints all the ways that two words
- intersect in a common character. The file
- cross.dat contains typical data. Run this test
- as
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- icont cross.icn -x <cross.dat
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- meander.icn This program prints the "meandering strings"
- that contain all subsequences of a specified
- length from a given set of characters. Run this
- test as
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- icont meander.icn -x <meander.dat
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- roman.icn This program converts Arabic numerals to Roman
- numerals. Run this test as
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- icont roman.icn -x
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- and provide some Arabic numbers from the con-
- sole.
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- wordcnt.icn This program tabulates the number of occurrences
- of each word from the input file. Run this test
- as
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- icont wordcnt.icn -x <file
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- where file contains some text of interest.
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- Features of MS-DOS Icon
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- MS-DOS Icon supports all the features of Version 5.9 of Icon,
- including sets and the experimental features described in
- EXTEN.DOC, with the following exceptions and additions:
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- + Pipes are not supported. A file cannot be opened with
- the "p" option.
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- + There is two new options for open: "t" and "u". "t" indi-
- cates that the file is to be translated into UNIX format.
- All carriage-return/line-feed sequences are translated
- into newline sequences on both input and output. "t" is
- the default. "u" indicates that the file is to be
- untranslated. Examples are:
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- untranfile := open("test.fil","ru");
- tranfile := open("test.new","wt");
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- + The IPATH environment string, as described in EXTEN.DOC
- and RUN.DOC, is supported. The separator between paths
- is the semicolon. The current directory is always
- searched. For example,
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- SET IPATH=A:\;A:\ICON\LIB
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- searches the current directory, then root directory on
- drive A, and finally the directory A:\ICON\LIB.
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- + Path specifications can be entered using either a / or a
- \ . Examples are:
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- A:\ICON\TEST.ICN
- A:/ICON/TEST.ICN
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- + The following MS-DOS device names can be used as
- filenames:
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- AUX Refers to an auxiliary device.
- CON Refers to the console.
- PRN Refers to the printer device.
- NUL Specifies a "null" file. Giving NUL as a filename means
- that no file is created.
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- These special names remain associated with the devices
- listed above, even if device designations or filename
- extensions are added to them. For example, A:CON.XXX
- refers to the console and is not the name of a disk file.
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- + Trace output is sent to STDERR. On MS-DOS STDERR is not
- re-directable from the command line.
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- Bugs and Limitations
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- Since this is a small memory model implementation, the
- amount of data available for a running program is limited.
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- This is a new implementation and some problems with it
- are likely to occur. Problems should be reported using the
- trouble report form given in TROUBLE.FRM on the distribution
- diskette.
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- See RUN.DOC for a list of known bugs.
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- Future Plans
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- A large memory model implementation of Icon under MS-DOS
- is underway.
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- Material from the Icon program library is being adapted
- to MS-DOS and will be distributed separately when it is
- ready.
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- Ralph E. Griswold
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- Department of Computer Science
- The University of Arizona
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- September 30, 1985
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