Reality Breaker BBS   by Reality Breaker BBS

Applying changes will reload the page and reboot the emulator

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Changes are not applied until the browser tab is reloaded

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DOS programs need a keyboard for user input
Some common keys used in DOS programs

ENTER ↵ to select or continue
ESC to navigate back or exit
←→ ↑↓ are often used to navigate menus

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Emulation too slow?

Set the emulator to use maximum CPU speed

Emulation too fast?

Set the emulator to use the 386 CPU configuration

Experiencing graphic or animation glitches?

Set the emulator to use VGA only graphics configuration

Need to turn off the audio?

Disable sound card support

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Have no audio?

1. Try Gravis Ultrasound hardware
2. The song or audio file maybe missing from the program

3. Audio may not be supported
   Unlike other systems of the era, audio for DOS was unfortunately complicated for both programmers and end users alike. A lot of early scene software didn't bother including it. While those that did often didn't test it on all the hardware they supposedly supported.

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Want to hack around in the DOS prompt?

1. Mount the DOS tools drive with automatic run program turned off
2. Then dir u: to list the utilities, some included programs 4dos.com cp.exe acidview.exe pictview.exe
3. Use mount to list the emulated drives
4. Learn the DOSBox commands

DOSee pronounced dos/see, is our emulator used to run MS-DOS based software in your web browser.

MS-DOS (Microsoft DOS) was the primary operating system used by PCs during the 1980s to the early 1990s and is the precursor to Microsoft Windows.

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DOSee is a slimmed down, modified port of The Emularity.

The Emularity is a multi-platform JavaScript emulator that supports the running of software for legacy computer platforms in a web browser. It is the same platform that's running emulation on the Internet Archive.

EM-DOSBox is a discontinued, high-performance JavaScript port of DOSBox that is applied by The Emularity for its emulation of the MS-DOS platform.

DOSee uses BrowserFS ZipFS and ZipFS Extras to simulate zip file archives as hard disks within EM-DOSBox.

DOSBox is the most popular MS-DOS emulator in use today and is frequently used by commercial game publishers to run games from their back-catalogues on modern computers.

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DOSee, built on The Emularity, EM-DOSBox and DOSBox. Capture screenshot and save function built on canvas-toBlob.js.