************************************************
************************************************

Unfortunately, this site has restricted functionality as this browser does not support the HTML button formaction attribute.

Unfortunately, this site has restricted functionality as this browser has HTML web storage turned off.

2 of 2 files critical mass bbs

Emulating CRITICAL.EXE in DOSee.

Use these tabs to make adjustments to the emulation

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 8086 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 1.0 hardware
  2. Try Covox Sound Master hardware
  3. The song or audio file maybe missing from the program
  4. 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.

4 items in the archive
  • CRITICAL.EXE
  • SPACEDEB.MOD
  • SPAWNING
  • TS-NOTES.DOC
[+] Configuration Copy text
04/12/93 12:07am This demo requires a 286+, VGA+, and about 580K+ base memory free. SOME TECHNICAL NOTES I know I always used to love it when a coder would put some hints & tips in his loader (Tran/Ren for one), so I figured I would too. The demo uses a 1280x200 virtual screen, in 320x200 Mode X. To widen the screen, you use the Offset Register at port 03D4H, Index 13H. Mode X is a bit harder to describe, but I can refer you to some Dr. Dobbs articles that will tell you all about it: July, August and September 1991 issues have a column by Michael Abrash called "Graphics Programming" that will get you started with Mode X. His version is 320x240, but Mode X is more than that. It's an entirely different way of addressing video memory. It allows for 4 pages in regular 320x200 (hence the 1280x200 virtual screen is possible - and addressable :), 2 pages in 320x400. Many people often ask me for titles of books, with which to learn VGA programming... the one I'd most recommend is Programmer's Guide to the EGA and VGA Cards, by Richard F. Ferraro, published by Addison-Wesley (ISBN 0-201-57025-4). It's a great book that goes into detail with each of the VGA registers, and doesn't skip registers that it figures you don't need to know about, and shouldn't fuck with anyway. Apparently there might be a new edition coming out (the one I have here is Second Edition), so you might want to wait for that. The MOD-playing routines are GoldPlay, by The Code Blasters. It was a tossup between that, or the STM Interface Kit. I chose the GoldPlay routines because they support more devices, even though the sound quality is a bit worse. Eventually I'll get around to writing my own routines, but right now I simply don't have the time to both code demos, and work on a music system. There's a serious lack of information in the demo-coding scene on the IBM. People are so tight-lipped about the things they develop, that there are very few demos being produced that are actually worth the time to download (at least in North America - damn Swedes! :). Share the wealth! The more you spread useful information, the more demos will be developed. 'Nuff said. Anyway, if you have some questions, you'll just have to get yourself on CRiTiCAL MASS :) . Feel free to mail me about anything. I don't profess to be the God of Demo Coding, but if I can help out a fellow coder in need, I will. <T*S> [iCE] Ottawa, Canada!
TS-NOTES.DOC 80x52 Font
80