Yet Another Befunge Page

What is Befunge?

It's fun. It's free. It's eminently two-dimensional. And unfortunately, most information about it is accessible only via the Wayback Machine.

Documentation

I've been attempting, off and on, to compile as much information as I can about Funge-98 and its predecessors (and successors). One of these days, I'll make another try at a standard-compliant Funge-98 interpreter. Some of my old notes on Funge-98 are in this document.

The official Funge-98 specification is here too, mirrored from the Cat's Eye website.

I also have a mirror of the documentation from RC/Funge-98, Mike Riley's Funge interpreter. The originals are here (on Jesse van Herk's mirror).

I have a mirror of Jeffrey Lee's Dynafing specification for dynamic fingerprints, as well as a nifty HTMLized version of the same thing. The original is at http://www.quote-egnufeb-quote-greaterthan-colon-hash-comma-underscore-at.info/. (That domain name ought to be familiar to Befunge programmers!)

The Wayback Machine's mirrors of the old Cat's Eye website are extremely interesting. Chris Pressey's new website is much less Geocities and much more Sourceforge.

The Fungus Virtual Machine

Several years ago, Alexios Chouchoulas wrote a paper describing Fungus, a physical machine especially designed for the Funge programming paradigm. I have a software implementation of that specification, with some useful extensions; and also a two-dimensional assembler for creating binary programs to run on the virtual machine.

• Read Chouchoulas' original Fungus specification [PDF, 170K].
• Read my Fungus virtual machine documentation.
• Browse a snapshot of the current sources for the Fungus virtual machine and assembler. The accompanying Makefile builds the following programs:
  • fungasm, the Fungus assembler.
  • simfunge, the Fungus simulator.
  • bef2elf, a utility program that converts arbitrary ASCII text blocks into FungELF program images.
  • elf2ppm, a utility program that converts arbitrary FungELF images into 512x512 bitmap images for browsing and debugging.

Other People's Pages

• Some guy made both a Javascript Befunge interpreter and a Befunge-93 dialect interpreter for the TI-86 calculator.
• vsync has a Funge page, [mirror] and was at one point working on "Temporal Funge", a time-travel Funge-98 dialect with threads.
• Here is the defunct SourceForge page for Temporal Funge (in Java).
• Wim Rijnders has a Funge page.[mirror] He wrote "Visual Befunge '93 for Windows" (brr!) and the famous Befunge-93 translation of Hunt the Wumpus.
• Chris Pressey's page is the original and official home of Befunge, though there's not much new happening there that I can see.
• Some guy has written ZedFunge (not to be confused with zfunge), a Funge-98 interpreter written in Inform.
• Francis Irving wrote the ZBefunge on which ZedFunge was based.
• Zinx Verituse wrote zfunge, a Funge-98 interpreter; it is no longer being actively maintained.
• Dufflebunk wrote the PJSF Funge-98 interpreter in Javascript, and TFunge, a Trefunge implementation. He had plans for Object-Oriented Funge.[mirror]
• Jeffrey Lee has a RISC OS Funge-98 implementation called !Befunge, in addition to a whole lot of very impressive Befunge code and the bragging-est domain name ever registered.
• hbef [mirror] is a Funge-93 dialect written by Greg Velichansky.