Action! - The Native Programming Language for Atari 8-bit Computers
...is significant for its high performance, which allows games and graphics demos to be written in a high-level language without the use of hand-written assembly language code. Action! language constructs were designed to map cleanly to 6502 opcodes.
In 2015, Clinton Parker released the Action! 3.6 sourcecode to the public under the terms of GPL. This project is intended to preserve the Action! sourcecode, provide fixes for known bugs, and add new features in version 3.7.
Join us at AtariAge https://forums.atariage.com/topic/217770-action-source-code for questions and discussions.
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This project offers open source implementations for UNESCO/IFIP's Algol 68 (the Revised Report language).
The project offers two implementations:
Implementation 1 is Algol68G: a recent checkout hybrid compiler/interpreter by Marcel van der Veer, supporting arbitrary arithmetic, partial parametrisation, complex numbers, POSIX threads, GNU plotutils, GNU scientific library, curses, sound, TCP sockets, RegEx and PostgreSQL.