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Kevin O'Dwyer

JsDOSBox is a JavaScript port of jDosbox. It is capable of running dos programs from the early 90's.

Test page http://jsdosbox.sourceforge.net

For a demonstration of JsDOSBox running a shareware game go to http://jsdosbox.appspot.com. And running DOS demos at http://retropcdemos.appspot.com.

To see a more general x86 PC emulator which boots FreeDOS and Linux see my other project at http://sourceforge.net/projects/jspcemulator/. It was mostly coded in 2010, src uploaded early 2011. Hasn't seen much changes since mid 2011.

See README.txt in source tree for instructions.
http://sourceforge.net/p/jsdosbox/code/HEAD/tree/src/

JSDOSBOX CHANGES

Jan 2016

  • Dropbox integration
  • Resurrected alternate code for reading from zip files
  • Fix for handling left/right alt/shit/control keys

Feb 2015

  • Mouse control improved
  • 15,16,32 bit colour modes added

Jan 2015

  • Better performance
  • Sound re-implemented. Sound now stereo. Also works in Firefox

Sept 2014

  • Re-baselined from a more recent jdosbox codebase
  • fixed sound following chrome browser changes
  • removed various failed experiments
  • added screen scaling
  • amount of memory available to emulator is now configurable
  • background color is now configurable
  • auto run parameter has been simplified

Note: Some properties have been removed and others changed
This release offers modest improvement in performance

June 2013

  • Re-baselined from a more recent jdosbox codebase
  • More comprehensive zip file support added
  • New js dynarec (3rd attempt, still a work in progress)
  • Removed a number of failed experiments
  • Keyboard event handling much better now
  • It should now be much easier to use. See readme.txt for instructions.
    This release is the first with a beta tag from the previous alpha status, even though some things are not correct.
    Note: Some properties have been removed and others changed

July 2012

  • Attempted to fix CanvasScaled screen option
  • Added new Javascript compiling core based on the more recent dynarec in jdosbox. Not active

April 2012

  • NOTE: some property defaults have changed
  • Added ability to capture/override current property settings as URL parameters
  • Almost completed Zip filesystem Handling
  • Finally added support for cycle tuning
  • Mouse emulation (more work required)
  • Added mute button
  • Other minor changes

March 2012

  • Added Zip file handling (still a work in progress as write IO is yet to be implemented)
  • improved Configuration dialog
  • fixed bug in JavaScript 'compiler'
  • undone some of the previous month's optimizations (short -> int)
  • further work in the sound subsystem converting arrays[] to TypedArrays
  • numerous other fixes

February 2012

  • Added GUS sound card emulation
  • Added ability to upload hdd images and configure emulator from web page dialog
  • Updated codebase to match recent jdosbox changes (partial)
  • Added numerous optimizations after profiling (removing Long types etc)
  • Javascript 'compiler' now much more efficient (update mar 2012 - actually no)

January 2012

  • Now uses TypedArrays for memory, disk, screen & sound buffers
  • Added WebGL renderer and CSS transform scaling
  • Added GameBlaster and Adlib audio devices
  • Now uses WebAudio API.

December 2011

November 2011

  • Completed work on the Javascript 'compiler'

October 2011

  • 7Zip compression for disk images
  • Improved compatibility
  • Added a JavaScript 'compiler' to dynamic core
  • other minor bits and pieces

September 2011
Re-baselined from a more recent jdosbox codebase.

August 2011
First upload to sourceforge

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