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General Doors CS 7.0 Shell Features

  • Shell and GUI for managing and running any available BASIC and ASM program on TI graphing calculators
  • Mouse-based interface is intuitive for modern computer users and calculator enthusiasts alike.
  • Rock-solid stability from months of community beta-testing.
  • Powerful built-in libraries for ASM and BASIC programmers.
  • Folder-based organization system lets you find programs quickly and easily.
  • Built-in file management tools make renaming, copying, deleting, locking, archiving, and hiding a breeze.
  • Built-in 8-line BASIC editor can even edit archived and locked BASIC programs
  • Extensive keyboard shortcuts for power users.
  • Rendundancy and backup systems restore your folder organization and preferences should your calculator crash.
  • Robust, powerful CALCnet2.2 networking protocol built-in.
  • TI-OS integration adds features like running any program directly from the homescreen with HomeRun, keyboard shortcuts to APD or launch Doors CS, and more.
  • Wide compatibility with existing MirageOS, Ion, xLib, Celtic III, PicArc, Omnicalc, Doors CS 5/6, and TI-OS programs and features.
  • In-shell battery and memory meter as well as low RAM/battery warnings.
  • Hover over programs to see their size and description with the InfoPop feature.
  • MemoryPop lets you see your RAM and ROM usage in Doors CS by hovering over the memory meter.

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File Management HomeRun MemoryPop

Program-Related Features

  • Intelligent Writeback extends your flash ROM’s lifetime and reduces Garbage Collect messages by only overwriting archived programs after execution if they have changed.
  • Doors CS’ Associated Program feature lets you open files with their viewer, like clicking a document to open it with a word processing program, or a game level to open it in its game.
  • HomeRun feature can run any BASIC or ASM program, archived, locked, or otherwise, from the TI-OS homescreen simply by executing prgmNAME.
  • Instant Goto replaces the TI-OS’ slow Goto feature, and uses Doors CS’ 8-line BASIC editor.
  • Archived programs are kept in ROM during execution, so ASM program crashes will not delete the program.

Customization Features

  • Users can modify their mouse cursor, acceleration speed, folder backup preferences, and many other options and settings.
  • Rename any program, including ASM programs, from within Doors CS
  • Supports custom backgrounds on the Doors CS desktop
  • Users can easily add an icon and description to any existing BASIC program
  • Shell Expansions provide additional functionality to Doors CS, such as password protection or a clock.


  • Runs MirageOS ASM programs and displays their icons
  • Runs MirageOS BASIC programs; InfoPop recognizes MirageOS program descriptions
  • Runs nostub (TI-OS) ASM programs and Ion ASM programs
  • Has built-in BASIC libraries for BASIC programs using xLib, Celtic III, PicArc, Omnicalc, and DCSB Libs.

Features for ASM Programmers

  • Full set of Ion and MirageOS libraries to support new and existing programs.
  • Extensive GUI system allows stacked windows, mouse input, text input, forms, and more for DCS7 ASM programs in an extremely simple API.
  • Associated Program functionality seamlessly passes files to their respective viewer programs, and handles archiving/unarchiving and cleanup.
  • Built-in FileOpen, FileSave, and FileSaveAs GUIs make the creation of small, powerful AP programs possible.
  • Shared libraries called Appended Library Extensions can be used to provide networking, 3D graphics, and grayscale support.

Features for BASIC Programmers

  • Full compatibility with popular xLIB library without needing to keep the 16KB app on your calculator. Doors CS versions of xLIB routines are faster, safer, and more optimized
  • Full compatibility with popular Celtic III, PicArc, and Omnicalc libraries, also built-into Doors CS 7 and optimized for speed and stability.
  • Powerful DCSB Libs introduced in Doors CS 7 provide access to advanced features, the Doors CS GUI system, stack structures for the Ans variable, and more.
  • Simple addition of icons and descriptions to programs without breaking compatibility or functionality
  • Hide programs from Doors CS, or specify a set of subprograms that are automatically unarchived when a BASIC program is run.