atxl
====== Atari BASIC XL ======
{{tag>atxl}}

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== Keywords ==
//all of [[..:atari:|Atari BASIC]] plus://
**{{backlinks>.#keywords}}**
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Atari BASIC XL was released in 1983 as a cartridge for the Atari XL line of 8-bit computers. As such, it was not an extension, but a complete replacement for the original, already aged [[..:atari:|Atari BASIC]].

Comparison of reference manuals for Atari BASIC is actually confusing because the original and the XL version seemed to co-exist for a while. According to an OSS manual for BASIC XL, it seems that this version pretty much incorporates everything from the original Atari BASIC and [[.ataplus|the A+ extension]]. 

Parts were completely replaced under the hood, however. XL implemented loops in a much faster, address-based fashion, and this change alone boosted Atari BASIC out from the backmarkers row of performance.

===== Where it is/was used =====
/* TO DO: Machines and emulators which ran this BASIC. */
  * Atari XL line


===== Noteworthy characteristics =====
/* TO DO: a list or prose text about this BASIC's features, quirks, Easter eggs, tricks, singularities... */

  * The opening ''('' for function arguments is part of the functions names, so there must not be a space between the function name and the parenthesis.

===== Environment and usage =====

/* TO DO: notes about the REPL or IDE used, keyboard shortcuts and commands, command-line options for compiling and linking, environment variables which might be set... */


===== Extensions =====
/* TO DO: Famous libraries tools and extension packages made for this BASIC */


===== Curiosities =====
/* TO DO: Historical notes, anecdotes, what people said about it */


===== Related to... =====
/*   * **[[basicTagName|basicTitle]]** - TO DO: a brief description of the relation they have with this one */


==== Influenced by ====
/*  * **[[basicTagName|basicTitle]]** - TO DO: which are the noticeable or assumed influences */
  * [[..:|Atari BASIC]], the original one, of course


==== Influence for ====
/*  * **[[basicTagName|basicTitle]]*** - TO DO: which are the noticeable or assumed influences */


===== Versions and successors =====
/*
  No much need of prose here, just links. Notice the different patterns to create the links:
    * **[[basics:atari:versionTagName|versionTitle]]** - for versions (created under this page)
    * **[[successorTagName|successorTitle]]** - for a successor (created as sibling of this page)
*/



===== References =====
/*
  If the ((citation)) syntax was used elsewhere, they will be listed below this section.
  You can prepend this with a list of books, magazines and web pages with information
  used in this page
*/
  * ALBRECHT, Bob; FINKEL, Leroy; BROWN, Gerald R.. //ATARI BASIC XL Edition//. Wiley. USA, 1985.
  * WILKINSON, Bill; GOLDSTEIN, Diane. //30 Days to Understanding BASIC XL//. Optimized Systems Software, Inc. USA, 1983. Available at https://archive.org/details/BASICXLMANUAL , last check 2023-03-18. 
  * //A Reference Manual for BASIC XL//. OSS and Atari. USA< 1983. Available at https://archive.org/details/BASICXLMANUAL/page/n179, last check 2023-03-18.

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