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3 of 10 files defcon 5 bbs

    Download defcon_5_bbs.zip

    Size 21 kB

  • This download is an executable MS-DOS program that will not run on a modern computer. It needs a DOS emulator such as DOSBox-X, Staging; or a virtualized MS-DOS or FreeDOS system.
    Browsers may flag this download as unwanted or malicious. If unsure, scan it with VirusTotal.
  • Last modified
     MD5 checksum 88f0d6bbe0d376fab41b27f401336b68
        Mime type Zip archive data

1994 May

The sound device selection is unintuitive. To get audio use your arrow keys and select 'Change Default', Enter and choose IRQ 5, Port 240h and Enter. Then select the Gravis Ultra Sound, Enter.

Emulating DEFCON5.EXE in DOSee.

Use these tabs to make adjustments to the emulation


Gravis Ultrasound (GUS) audio settings, port 240 IRQ 5 DMA 1

If the emulation is taking too long to load, you can turn it off.


Reload DOSee to launch the DOS prompt

Applying changes will reload the page and reboot the emulator





Changes are not applied until the browser tab is reloaded





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


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

Have no audio?
  1. Try SoundBlaster 16 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.


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.


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.


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

2 items in the archive
  • DEFCON5.DOC
  • DEFCON5.EXE
[+] Configuration Copy text
╓───────────────────────────────────────────────────────────────────────────╖ ║· Defcon 5 - A Noice proudction in 1994 ·║ ╙───────────────────────────────────────────────────────────────────────────╜ Code.............Drakir Music.............Tommy Graphix........Bluebird ┌────────────────────────────────────────────────────┐ │ Soundblaster & Internal speaker soundsystem by TCB │ │ GUS soundsystem by -Noice- │ └────────────────────────────────────────────────────┘ If the intro is running really slowly try the 'No sound' alternative, if it still runs slowly make sure that no EMM software is loaded. The intro only works on 386-based computers ┌──────────────────────────────────────────────────────┐ │■ ·│ │ Anything you want -Noice-: Drakir / Noice │ │ Rickard Hansson │ │ Bj”rkhagsv.19 │ │ 260 83 VEJBYSTRAND │ │ SWEDEN │ │ │ │ +46-(0)431-24224 (FAX) │ │ │ │ Or call our WHQ 2nd:Phobia: +46-(0)431-50748 │ │· ■│ └──────────────────────────────────────────────────────┘ ╔════════════════════════════════════════════════════════════════════════════╗ ║ ║ ║ Note: Some bugs may appear on the writer when choosing 'GUS' or 'No Sound' ║ ║ That's because I programmed the system IRQ to update the writer ║ ║ each frame even if the glenzvector is taking more than one. ║ ║ This because the writer will be very boring to read on a slow ║ ║ computer. So if the writer goes to slow, try 'GUS' or 'No Sound' ║ ║ alternative, the IRQ would'nt work on the other soundsystem. ║ ║ ║ ║ Sorry / [DrakiR/NoIcE] ║ ║ ║ ╚════════════════════════════════════════════════════════════════════════════╝
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