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Action! is a programming language and development environment with an integrated editor, compiler, and debugger for the Atari 8-bit family of computers. It was created by Clinton Parker, who had previously developed the Micro SPL language with Henry Baker, and released on cartridge by Optimized Systems Software in 1983. Action! was used to develop at least two commercial products—the ''Homepak'' productivity suite and ''Games Computers Play'' client program—and numerous programs in ''ANALOG Computing'' and ''Antic'' magazines. The language was never ported to other systems. The Action! language syntax is similar to that of ALGOL 68. Constructs were designed to map cleanly to 6502 opcodes, to provide the high performance necessary for game and graphics demos without needing complex optimizations in the compiler. Unlike the integrated Atari BASIC and Atari Assembler Editor environments, the Action! editor is full-screen, so it does not use line numbers. A development library was available as a separate product called the Action! Toolkit. The 6502 assembly language source code for Action! was made available under the GNU General Public License by the author in 2015.〔http://atariage.com/forums/topic/217770-action-source-code/?p=3168885〕 == Data Types == Action! has three fundamental data types, all of which are numeric. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Action! (programming language)」の詳細全文を読む スポンサード リンク
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