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X-Troll Demos - The Longscreen

Longscreen! (1988)

The Longscreen was coded in 1988 by Sunnyboy and it featured graphics by Nexus 6. This screen scrolls a lot of screens in one vertical blank while loading the graphics from disk with an interrupt loading routine. These disk-routines are the origin of the fastest copy-program for the ST, the Turbo-Booster.

SC1224 upper left slice SC1224 upper slice SC1224 upper right slice
SC1224 left slice SC1224 right slice
SC1224 lower left slice SC1224 lower slice SC1224 lower right slice

Nexus 6 / X-Troll has just managed to image the original data disk of the "Longscreen" demo in a version from 1989. Cyclone / X-Troll added the necessary program disk and reworked the sources a bit. The demo should run on machines with 512k or more and TOS 1.0 to 1.62. Don't try with TOS 2.0x since it crashes on a Gemdos call.

Running on real Hardware

I am not sure if the Longscreen will run from a disk which wasn't produced in the original way. MSA loses some tiny but important details about the structure of the Longscreen data disc. So I simply can't guarantee it will work after being written back to a real floppy. However we are working on a solution for this problem. In the meantime enjoy the screen with either SainT or STEem.

Running with SainT

The demo runs flawlessly on SainT 1.70b if you use the following settings:

  • Drive Speed:   Realtime
  • Emu. Speed:   ST 8 MHz
  • Enable Sound: Disk Drive

Insert LongScr1.MSA and wait until the demo demands disk 2, then enter the disk menu via F12 and insert LongScr2.MSA into drive A: Make sure you DON'T RESET SainT just press RUN again and follow the instructions on the screen.

Running with STEem

First we thought the demo wouldn't run properly with STEem because it's loading way too fast. But as Grazey / P.H.F. pointed out, STEem has a well hidden setting to activate accurate disk timings. You need to set the following options. Click onto the little wrench symbol on top of the STEem window. you should see the following window.

Go to the category "General" and uncheck the box "Automatic fast forward on disk access".

We are not yet done. Click onto the little disk icon at the far right side of the STEem window. You should see the following window:

Click onto the small disc icon with the wrench and activate the setting "Accurate Disk Access Times (Slow)". The change was successful when you see the same red snails appear in front of both disk drives, like in the above screenshot.

Insert disk 1 in drive B and disk 2 into drive A and start STEem. Doubleclick "LONGSCRN.PRG". You should be able to watch the Longscreen now.

1988 X-Troll


X-Troll a demo crew on Atari ST, Atari STE and Mega ST 16 bit computers was founded in 1988 and consisted of Sunnyboy, Nexus 6 and the Cyclone. Their releases were: Acid-Intro, Sprite Magic, The final Swobbler, The Longscreen, The Cyclones New Year Demo, AudioPac Demo, Digidrum Demo and the best Atari game ever Lethal Xcess, the follow up to Wings of Death.

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This page has been updated 04.05.2008