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Topic: Forth programming language


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In the News (Wed 22 May 19)

  
  compilers.net > paedia > forth
Programming is done by extending the language with 'words' (the term used for Forth subroutines), which become part of the language once defined.
Forth has been popular for developing embedded systems and instrument controls because it is easy to add small machine code definitions to the language and use those in an interactive high-level programming environment.
Forth became very popular in the 1980s because it was well suited to the small microcomputers of that time: very efficient in its use of memory and easily implemented on a new machine.
www.compilers.net /paedia/forth/index.htm   (2719 words)

  
  Forth programming language - Wikipedia, the free encyclopedia
Forth is a procedural, stack-oriented, reflective programming language and programming environment.
Forth became very popular in the 1980s because it was well suited to the small microcomputers of that time: very efficient in its use of memory and easily implemented on a new machine.
Forth programming style uses very few named data objects compared with other languages; typically such data objects are used to contain data which is used by a number of words or tasks (in a multitasked implementation).
en.wikipedia.org /wiki/Forth_programming_language   (3989 words)

  
 Forth programming language : Forth   (Site not responding. Last check: )
Forth is a computer programming environment developed by Chuck Moore[?] then at the US National Radio Astronomy Observatory (NRAO[?]) during the 1960s, and later formalized as a programming language in 1977, and standardized by ANSI in 1994.
Forth is usually implemented with an inner interpreter tracing indirectly threaded machine code, which yields extremely compact and fast high level code which can be compiled rapidly.
Forth became very popular in the 1980s because it was well suited to the small microcomputers of that time, being very efficient in its use of memory and easy to implement on a new machine.
www.explainthat.info /fo/forth.html   (1734 words)

  
 Stack Computers: 3.3 OVERVIEW OF THE FORTH PROGRAMMING LANGUAGE
This is because the primitives of the Forth language are defined at a very low level, and correspond to the machine code operations that would have to be present in any stack machine.
The consensus among Forth programmers is that use of the Forth language reduces development time by a factor of 10 compared to other languages over a wide range of applications.
Forth has not been used extensively in extremely large programming efforts, so its effectiveness in very large applications is as yet unknown.
www.ece.cmu.edu /~koopman/stack_computers/sec3_3.html   (868 words)

  
 [No title]
The forth programming language was originally formalized in the early 70s by Chuck Moore, but its beginnings predate that by several years, mostly as a small, specialized programming platform for various systems.
Forth had a brief stint with popularity after microcomputers were introduced, often being the first language to support the new microprocessors, but soon fell into relative obscurity in mainstream programming.
Forth is built upon the belief that every implementation aspect of the language should be as simple as possible, and that all complexity should be built upon this base of simplicity.
www.hcsw.org /reading/forth.txt   (2159 words)

  
 WHAT IS FORTH
Forth was invented by Charles Moore, a freelance programmer who had worked on control and data acquisition applications in environments ranging from a carpet factory to the Stanford Linear Accelerator Center.
Nearly all Forth words use the parameter stack for both their arguments and their results; the return stack is used for flow of control within a program and (occasionally) for temporary storage of working values.
The ANSI Forth Technical Committee (X3J14), which operated under the auspices of both CBEMA and the IEEE Computer Society, made slow but steady progress reconciling the existing Forth dialects, and the after many revisions the committee's work was finally approved as the American National Standard for Forth Programming Language in the Spring of 1994.
www.angelfire.com /in/zydenbos/WhatisForth.html   (5226 words)

  
 PC AI - Forth Programming Language
A number of Forth's features (such as its interactive style) make it a useful language for AI programming, and devoted adherents have developed Forth-based expert systems and neural networks.
These are the stack-based postfix languages, usually interpreted, descended from the FORTH language.
Forth and Forth chips by the investor of Forth Chuck Moore.
www.pcai.com /web/ai_info/pcai_forth.html   (303 words)

  
 BBC - h2g2 - Forth - the Programming Language
Compiled languages - programs ran very quickly but took a long time to write, as each time a change was made, the program had to be recompiled, which could take five or ten minutes.
Forth was 'flavour of the month' in the early 1980s, until people actually tried writing programs in it.
The term 'Fourth Generation Language' (4GL) went on to mean something different in the computer world (a language for interrogation of relational databases), and Forth is not a 4GL in the normal sense of the term.
www.bbc.co.uk /dna/h2g2/A2927360   (2544 words)

  
 Programming Languages Directory | Forth Programming Language
Forth was created in 1970 by Charles H. Moore.
Many larger machines had several languages to communicate between user and machine, such as an application, a complier, a supervisor, and an assembler.
The program would be converted through these languages so it could communicate with the machine.
www.computerowl.com /forth.php   (282 words)

  
 Everything in: Forth Programming Language Overview
The Forth programming language was developed by Chuck Moore during the 1960's and was later formalized as a programming language in 1977, standarized by ANSI in 1994.
The Forth language features interactive execution of commands as well as the ability to compile sequences of commands into threaded code for later execution.
The Forth programming language has been popular as a development language for embedded systems and as a vehicle for instrument control.
ice.prohosting.com /wmnet/everythingin/computers/programming/languages/forth.htm   (109 words)

  
 One Definition of Forth
Instead of seeing Forth as an approach to problem solving rather than a specification for a programming language there is now a formal ANSI specification for the Forth programming language.
The 10% of the programs that are Forth can be optimized to be compact and efficient and may be more compact and efficient than other programs that also start with a 90% overhead.
Forth has been most sucessful in the embedded programming arena where severe restrictions in computing power and memory size dictated by minimal cost and power consumption requirments demand compact and efficient programs.
www.ultratechnology.com /4thdef.htm   (2623 words)

  
 Forth - the LEGO of Programming Languages - 1995
Unlike syntactic languages that require the use of a complex combination of syntactic structures to create an expression, Forth is a semantic language where the syntax is just words with spaces between them and the meaning is the defintion of the words.
The simplicity is unmatched in any other programming langugage, and this is why Forth is usually the first language implemented on new machines, is the language that boots up on Sun workstations and new "Open Boot Firmware" bus machines, can fit in the ROM of common microcontrollers, and can be easily implemented directly in hardare.
Forth is not as well known or widely used as 'C', more things are published in 'C', it is widely used in universities, and there are more jobs in 'C'.
www.ultratechnology.com /4thlego.htm   (2027 words)

  
 Forth programming language - overview
Forth is characterized by an interactive programming style, which dramatically shortens development times, and by extremely small target program size.
Forth was developed in the early 1970s at the National Radio Astronomy Observatory, where it was used for radio telescope control, on-line data acquisition, and data analysis.
Forth is not widely taught in universities, but is easy to learn if you have a programming background.
www.forth.com /forth   (422 words)

  
 FORTH - OLPC
Forth is at the core of Open Firmware, the boot-loader for the XO-1.
FORTH is one of the best programming languages for learning how to build languages.
Forth is a very productive environment for test and debugging of hardware, and will come in very handy for easier debug, testing, and exercise of the CAFE chip.
wiki.laptop.org /go/FORTH   (673 words)

  
 Programming › Forth programming language- Free Downloads at Simtel.net
Tutor.com is a general Forth language tutor with emphasis upon the Pygmy Forth platform by Frank Sergeant.
It features a Forth language debugger with user swap screen and direct commands, a language look-up and reference utility, tips for making turn-key applications and the basics of compiler directives.
Though not intended as your sole Forth language experience, the samples include a Black Jack game, basic modem interface with Xmodem protocol, and a file character filter as a DOS command line function.
www.simtel.net /pub/msdos/forth   (480 words)

  
 Open Directory - Computers:Programming:Languages:Forth
Forth is a programming language with a lot of implementations; you might say it is implementation rich; it may have more implementations than any other language.
Many other languages are standardized, or complex and large, and when users want a new feature or change, they write an extension.
Forth is less standardized and very compact, and when users want a new feature or change, they write an implementation.
www.dmoz.org /Computers/Programming/Languages/Forth/desc.html   (295 words)

  
 Definition of Forth programming language
Forth offers a standalone programming environment consisting of a stack oriented interactive incremental interpreter/compiler.
Forth is both blessed and cursed by its ease of implementation.
Forth assemblers usually use a reverse-polish syntax in which the parameters of an instruction precede the instruction.
www.wordiq.com /definition/Forth_programming_language   (2778 words)

  
 Open Directory - Computers: Programming: Languages: Forth
Forth: A Programming Language for Real Programmers - A dozen links, and a short explanation of Forth benefits which concludes with an enjoyable rant about the state of programming.
Forth Programming Language - Forth history and selected links, with a focus on artificial intelligence.
On Standardizing Object-Oriented Forth Extensions - Treats points relevant to the Neon/Yerk model, which is implemented in Mops, Win32Forth, and ANS Forth; and which now seems to be the most popular model.
www.dmoz.org /Computers/Programming/Languages/Forth   (475 words)

  
 Directory - Computers: Programming: Languages: Forth   (Site not responding. Last check: )
Forth Programming Language  · Forth history and selected links, with a focus on artificial intelligence.
Forth: A Programming Language for Real Programmers  · A dozen links, and a short explanation of Forth benefits which concludes with an enjoyable rant about the state of programming.
On Standardizing Object-Oriented Forth Extensions  · Treats points relevant to the Neon/Yerk model, which is implemented in Mops, Win32Forth, and ANS Forth; and which now seems to be the most popular model.
www.incywincy.com /default?p=6171   (446 words)

  
 Forth - Wikipedia, the free encyclopedia
Forth programming language, a stack-oriented computer programming language
Radio Forth, a set of radio stations based in Edinburgh
Forth, Lanarkshire, a town in South Lanarkshire, Scotland
en.wikipedia.org /wiki/FORTH   (111 words)

  
 Forth Programming Language FAQ: Part 1 of 6, General Information   (Site not responding. Last check: )
Programming in Forth consists of defining new words in terms of existing ones.
Copies of the standard cost $193, but the final draft of ANS Forth is free and available (subject to copyright restrictions) via ftp..." --Chris Jakeman, apvpeter.demon.co.uk The (un)official ANS Forth document is available in various formats at < http://www.taygeta.com/forthlit.html> and at < ftp://ftp.uu.net/vendor/minerva/x3j14/>.
The Forth Interest Group "FIG" was formed in 1978 to disseminate information and popularize the Forth language, and it remains the premier organization for professional Forth programmers.
omicron.felk.cvut.cz /FAQ/articles/a929.html   (2025 words)

  
 Forth Programming
The Forth programmingis for people who are interested in the Forth Programming language, originally invented by Mr.
LGPL ansi forth completly implemented in C for portability, multithreaded, used in a RTOS host as an embedded scripting engine library, can use also C modules, and compiles as a freestanding command interpreter on a posix'ish host OS.
Forth Inspired Command Language - designed to be embedded in any system that has a C runtime environment.
www.lotsasites.com /topic?topic=forth   (355 words)

  
 Forth Success Stories
Programming in Forth is a matter of building new 'words' by combining previously built words that are already in the dictionary, thus creating a hierarchy of words.
The language is significantly extended with words that deal with the Hybrid Synthesizer, MIDI input and output, a timer device, a new SID synthesizer chip, and all the devices used to control the analog synthesizers such as control voltage DACs and ADCs, pulse detectors and generators.
The computer on the unmanned Argo itself was programmed in Forth, a concise but versatile language originally designed to regulate movement of telescopes and also used to control devices and processes ranging from heart monitors to special-effects video cameras.
www.forth.org /successes.html   (1865 words)

  
 Forth Language
In the 80s, Forth was also commonly used by astronomers (and their grad students!) to program the control systems of telescopes and other instruments.
Forth is a low-level language when you start, because it doesn't come with a large vocabulary of ready-made words for every application.
Not so much a negative criticism of forth (or lisp or scheme), but an observation that extensibility of a language tends to be used in very incremental ways, while those looking for radically new constructs tend to choose a different language entirely regardless of the expressive power of the macro suite.
www.c2.com /cgi/wiki?ForthLanguage   (3471 words)

  
 [No title]
This concept isn't common in programming languages, but it has a name (in fact two names): "macros" (by which I mean LISP-style macros, not the lame C preprocessor) and "domain specific languages" (DSLs).
Linux because instead of programming directly to the hardware on a bare PC which I could have done, I went for a simpler tutorial by assuming that the 'hardware' is a Linux process with a few basic system calls (read, write and exit and that's about all).
In this FORTH you cannot easily turn a codeword pointer back into a dictionary entry pointer, but that is not true in most FORTH implementations where they store a back pointer in the definition (with an obvious memory/complexity cost).
www.annexia.org /_file/jonesforth.s.txt   (8178 words)

  
 Forth books - reference books and tutorials
Forth Programmer's Handbook has earned its reputation as the classic reference documentation for ANS Forth, regardless of which implementation you use.
It includes extensive Forth language glossaries, as well as generous, lucid discussion of both day-to-day and advanced programming subjects.
It introduces Forth fundamentals and assigns building-block exercises that develop a good general knowledge of the Forth programming language.
www.forth.com /forth/forth-books.html   (182 words)

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