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Joshua Bell 2013-05-06 20:12:39 -07:00
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jsbasic jsbasic - Applesoft BASIC in JavaScript
======= =======================================
Applesoft BASIC in JavaScript This is hosted for playing with at http://calormen.com/applesoft/
This is hosted at http://calormen.com/applesoft/ * The code depends on various polyfills at: http://calormen.com/polyfill
* The editor depends on CodeMirror and custom BASIC parser/styles
Depends on various polyfills at: http://calormen.com/polyfill
Notes & Known Issues Notes & Known Issues
-------------------- --------------------
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* Floating point overflow is only detected on variable assignment. * Floating point overflow is only detected on variable assignment.
* The DOS operating system implements only a subset of DOS 3.3 and ProDOS useful for basic file I/O. * The DOS operating system implements only a subset of DOS 3.3 and ProDOS useful for basic file I/O.
* Except for a small number of compatibility shims for common operations (e.g. keyboard strobe), commands that refer to assembly routines (`PEEK`, `POKE`, `CALL`, `USR` etc.), shape tables, or tape I/O are not implemented. * Except for a small number of compatibility shims for common operations (e.g. keyboard strobe), commands that refer to assembly routines (`PEEK`, `POKE`, `CALL`, `USR` etc.), shape tables, or tape I/O are not implemented.
* Commands that operate on the program itself (LIST, RUN, DEL, etc.) are not implemented. * Commands that operate on the program itself (`LIST`, `RUN`, `DEL`, etc.) are not implemented.
You can run your basic programs from the command line (with only basic text input and output, and no graphics or DOS commands): You can run your basic programs from the command line (with only basic text input and output, and no graphics or DOS commands):
* On Windows, download basic.js and run from a command prompt via: `cscript.exe basic.js your_basic_program.txt` * On Windows, download basic.js and run from a command prompt via: `cscript.exe basic.js your_basic_program.txt`
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To Do To Do
----- -----
Implement DOS functionality for consoles * Upload the CodeMirror styles
* Snapshot and/or link sensibly to the polyfills
* Implement DOS functionality for consoles
Links Links
----- -----
[6502asm.com](http://www.6502asm.com/) - a 6502 assembler/emulator in JavaScript [6502asm.com](http://www.6502asm.com/) - a 6502 assembler/emulator in JavaScript
[Quite BASIC](http://www.quitebasic.com/) - a similar project aimed at teaching programming [Quite BASIC](http://www.quitebasic.com/) - a similar project aimed at teaching programming