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<p>Brazucs: fixing vera's link</p> <hr /> <div>[[Category:83Plus:OS_Information|TIOS Alternatives]]<br /> <br /> == Introduction ==<br /> <br /> The TIOS is the official, standard operating system for the<br /> TI-83+ series of calculators (including the TI-83+ and TI-84+ and the respective Silver<br /> Editions of each). The vast majority of programs for such calculators run on top of the<br /> TIOS, or on top of some subsidiary program that runs from the TIOS, and thereby implicitly<br /> depend on its functionality. However, some people have researched writing alternative<br /> operating system code and sending it to the calculator to replace the TIOS.<br /> Several such alternative operating systems are available on the Web, though most of them are<br /> not yet at a production stage of development.<br /> <br /> == List of alternative operating systems ==<br /> <br /> *[http://michaelv.org/programs/calcs/ceptic.php CEPTIC], by Michael Vincent: a Control and Execute Program for TI Calculators. The current version of CEPTIC only runs on the TI-83+ SE, but can be modified to run on the TI-83+. Assembly source is available, but actually using the OS in its present state is considered non-practical, and the project has been discontinued for various reasons.<br /> *[http://pongos.sourceforge.net/ PongOS], by FloppusMaximus: a simple, proof-of-concept system whose namesake feature is an embedded Pong game. Some other system utilities, mostly inspired by Dan Englender's Calcsys, are also available in PongOS, including a hex editor, memory mover (with flash capability), flash sector eraser, and port monitor. Link support is not provided.<br /> *[http://vera.sourceforge.net Vera], by UnitedTI: dubbed the &quot;true calc lover's OS&quot; on the website. Vera is intended to consist of a very basic kernel which can be easily extended to include desired features. Vera is still in the planning stage as of 2006-03-27.<br /> *[http://www.ticalc.org/archives/files/fileinfo/349/34973.html CSX], by Sean McLaughlin: a command-line-based operating system with a screen layout similar to that of the TI-89 calculators. CSX provides a simple filesystem, send and receive of files over a link cable, hex editing of memory, and running of Z80 machine code programs.<br /> *Nostalgy, by XDG Kat-Productions: an unofficial project by certain members of [http://katpro.xiondigital.net/ XDG Kat-Productions]. No working demo is available, but development is reportedly still underway, albeit very slowly.</div>

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