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Retro is a modern, pragmatic Forth drawing influences from many sources. It's clean, elegant, small, easy to grasp, and adaptable to many tasks.
1779 commits 1 branch 20 tags 23 MiB
C 39.4%
Forth 33.8%
Python 12.8%
Assembly 4.3%
C++ 2.4%
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crc 57c31a40d0 retro(1): note that verbose output goes to /dev/stderr 
FossilOrigin-Name: 80a18380289ec06c1dd854fbf530e98263ba4ea614c265dc2b70cce66540420a
2023-10-10 09:54:47 +00:00
.builds ci: dont build retro-compiler (currently broken) 2023-06-29 11:13:23 +00:00
benchmarks benchmarks: add a simple choose benchmark (#26) 2020-12-18 20:18:13 +00:00
doc add glossary data for err: words 2023-10-02 15:14:07 +00:00
example double cell example: fix shift directions 2023-09-20 12:00:49 +00:00
future small cleanups, remove redundant file 2021-09-10 17:55:07 +00:00
image begin prep for start of work on 2024.4 2023-10-02 16:47:20 +00:00
interface err:notfound message display now handled by Forth side, not the VM 2023-10-03 16:43:41 +00:00
man retro(1): note that verbose output goes to /dev/stderr 2023-10-10 09:54:47 +00:00
package now start recording hashes of names 2023-02-05 16:38:04 +00:00
rel/python run black to reformat Python files 2021-01-20 17:41:34 +00:00
security begin prep for start of work on 2024.4 2023-10-02 16:47:20 +00:00
tests nga-c: empty RAM when loading a new image 2023-10-03 15:32:24 +00:00
tools remove a duplicate typedef in tools/retro-muri.c (sevan, in #retro) 2023-10-03 12:18:57 +00:00
vm retro.c: verbose log output to /dev/stderr instead of /dev/stdout 2023-10-10 09:53:01 +00:00
.gitattributes github: add file type overrides for linguist 2021-01-27 13:40:59 +00:00
.gitignore Change mem:* API to make memory offset calculation easier (from Rick C) 2022-07-31 00:46:20 +00:00
build-wip.sh nga-c: add retro-wip.c for implementation changes from issue #66 2021-06-11 19:36:38 +00:00
BUILDING.md add BUILDING overview document 2022-01-07 14:20:16 +00:00
Configuration.mk nga-c: start moving configuration into config.h 2023-10-04 14:59:31 +00:00
GNUmakefile fix for GNUmakefile (from drakonis) 2023-06-27 00:19:27 +00:00
KNOWN-ISSUES.txt add KNOWN-ISSUES 2023-10-03 13:51:48 +00:00
LICENSE merge in malloc device (thanks to Rick C for this!) and start of a double: vocabulary (create variables, constants; fetch/store variables) 2022-07-25 12:15:34 +00:00
Makefile initial stubs related to error handling device 2023-05-15 10:49:07 +00:00
Makefile.python nga-python: add Makefile.python target to package, upload for pypi (#23) 2021-01-18 15:43:33 +00:00
ngaImage start of verbose mode (enable with -v command line argument) 2023-10-03 19:01:15 +00:00
README.md bump version number; add new patrons, updates to release notes 2023-03-20 17:48:11 +00:00
RELEASE-NOTES start of verbose mode (enable with -v command line argument) 2023-10-03 19:01:15 +00:00
retroforth.el add retroforth.el emacs mode 2021-03-30 20:41:40 +00:00

README.md 

      d8888b. d88888b d888888b d8888b.  .d88b.
      88  `8D 88'     `~~88~~' 88  `8D .8P  Y8.
      88oobY' 88ooooo    88    88oobY' 88    88
      88`8b   88~~~~~    88    88`8b   88    88
      88 `88. 88.        88    88 `88. `8b  d8'
      88   YD Y88888P    YP    88   YD  `Y88P'

Retro is a modern, pragmatic Forth drawing influences from many sources. It's clean, elegant, tiny, easy to grasp, and adaptable to many tasks.

Features

  • Open Source (ISC License)
  • Portable (runs on a MISC-style virtual machine)
  • Small source & binaries
  • Builds into a single, self contained binary
  • Sources in literate format, using a Markdown variant

Quick Start

For most systems (FreeBSD, NetBSD, OpenBSD, macOS, Linux):

make

You will need a standard C compiler and make.

Executables

Binaries will be placed in the bin directory.

The primary executable is retro. This is used for running the examples and the Atua (gopher) & Casket (http) servers that power retroforth.org.

The retro executable embeds the image into the binary, making it trivial to copy and deploy.

This interface layer also extends the language with many new words and vocabularies, adds scripting, files, floating point, and more.

The retro executable can handle a variety of command line arguments which are covered in the manpage, but the most common ones are:

retro

Starts the listener, a basic REPL for interactive use.

retro filename

This will run the code in the specified file, then exit. This is also used to run programs as shell-type scripts using a header line like #!/usr/bin/env retro.

retro -i -f filename

This will run the code in the specified file, then start the listener.

Literate Sources

Source files for use with retro are written with code in fenced blocks:

commentary here

~~~
code here
~~~

Anything outside the fenced blocks will be ignored.

Documentation

The primary documentation is in RETRO-Book.md (and the formatted epub.) Additional notes can be found in the doc directory.

Alternative Implementations

In addition to the C and Python implementations, this source tree includes additional implementations in C#, Nim, JavaScript, and Pascal. These are not as well tested or as feature complete as the main implementations, but are provided for your use if the standard implementations will not suffice.

Learn More

Visit http(s)://retroforth.org to learn more and follow along with development.

Patreon

I have a Patreon at https://www.patreon.com/_crc for those that want to financially support development. All funds raised via Pateron are put into development related expenses (server expenses, app store fees, hardware).

Thanks go out to my current and past patrons:

  • Kiyoshi YONEDA
  • Krinkleneck
  • Rick Carlino
  • Scott McCallum
  • Bartels Jon Randy
  • Nuno
  • Eli
  • Brad S
  • Tobias Ammann
  • oneearedrabbit
  • Octavio Turra