Shots of some of the demos I coded on Atari ST
1993
The Trisogames
1993
Guest screen in the Calimero
1992
Anomaly Megademo
Our biggest production
[more info]
1992
Birthday screen for Léonard
1992
Guest screen in the O-Demo
1992
Guest screen in the Snork
1991
Guest screen in the Phaleon
1991
MJJ Party Demo
1991
Guest screen in the NTM Demo
1990
A first demo written in assembly
1990
Just for fun
Demoscene pictures
1993
With Oxygene
[website]
1993
With Ziggy Stardust
1992
With Niko
Anomaly Megademo (MJJ Prod)
  • Made in 1992 for the Atari ST
  • Game-style main menu
  • 19 screens
  • A karaoke and a Cochon-qui-rit game
  • Guest screens by Oxygene & DNT Crew
  • Beautiful graphics and sound
  • Coded entirely in assembly language
  • Syncscroll, fulltracker screens (4 track digital music on oversize screen) and true color sync effects. These demo techniques overcome the Atari ST's lack of hardware scrolling, its 320x200 and 16 colors limitation and its lack of hardware digital sound capabilities.

Thanks to The History of Atari Demos [English|French] and Brume from PaciDemo for the screenshot (and for mentioning us!)
Run this 10-year old Atari demo on your PC!

You can now run the Anomaly Megademo using a free Atari ST emulator. The year 2001 has seen the first release on PC of SainT and Steem 2, which emulate the Atari ST so accurately that even tricks such as overscans and syncscrolls are supported. Steem version 2.3 or later is by far the best emulator for running the Anomaly, as everything now works like on a real Atari (thanks and well done Ant and Russ!)

To try it, you need to:

  • Get the images of the two Anomaly floppy disks

    The original Anomaly doesn't run on some emulators because of its protection, which we made, like most ST demo makers before us, to stop people from looking at our code and to challenge other coders to try and break it. Because this protection can prevent the demo from running on today's ST emulators, I have made a modified version of the Anomaly, with its protection removed. You can get it from here [disk1|disk2], or better still from the PaciDemo website (bonjour Brume!)

  • Download and install an Atari ST emulator

    For this, go to the Steem website. You will also need a TOS image, which is a small file that contains a copy of the Atari ST's ROM. Read the emulator's website for directions or just get one directly from here.

  • Run the emulator and boot from the Anomaly disk 1

    You can only start an Atari ST demo by first inserting the floppy disk into the first drive, and then switching on the Atari (to do this in the emulator, select the disk image and then click Run). In the Anomaly like in most ST demos, you press the space bar to exit all screens. This includes the introductions, the loading screen and any screen you've entered from the main menu. In the main menu, you use the Atari ST's cursor keys (if you are using SainT these are mapped to the numeric keypad) to move the marble into one of the doors. If you are asked to insert the other disk, return to the emulator (by pressing Pause in Steem or F12 in Saint), replace the disk image and return to the Anomaly (by clicking Run). The Anomaly, like most ST demos, includes a reset demo which is started by hitting the Atari ST's "warm reset" button (in Steem this is done by right-clicking on Reset).

If you like it, you can always try more Atari ST demos and guestscreens made by us and other groups!

Sébastien (Bigfoot / MJJ Prod)

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