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*                                                                             *
*   Demo:   Cebit 92 Demo      Type:    Amstrad CPC Emulator DSK File         *
*   Author: Odiesoft           Webpage: http://www.odiesoft.de                *
*   Size:   2 * 204544 Bytes    Date:    n/a                                  *
*   Files:  Odiesoft Demos - Vector Graphics and Cebit 92 (The_Revenge_B).dsk *
*   Files:  Odiesoft Demos - Wishing Well and Nebulus (The_Revenge_A).dsk     *
*                                                                             *
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Title: Cebit 92 Demo
Year:  1992


The Cebit 92 Demo was compiled by Thriller of GOS, I just participated by
creating the perspectively turning stars in the background of the Cebit 92 logo.

It was the third Cebit I’ve attended after being at the shows in 1989 and 1991.
The party in ’92 was in the basement of Golwyn Mayers (GWM) place. A couple of
users had brought their CPCs in backpacks and in their cars and I’ve had the
chance to grab one empty CPC during the night and started writing this stars
vector graphics.

I even got it finished during the party, but I tok it back to my place after the
party to improve the speed of the graphics. Also Thriller asked me not to use
double buffering anymore since he didn’t have enough memory left for two screen
memories.

I had to re-write the display of the 90 stars so that they were always displayed
from the topmost star to the bottom, so that the stars didn’t flicker when the
routine was overtaken by the electronic beam of the screen - which happened when
I used a fix order in which the individual stars were being drawn.

So I finally got the calculation and display time of the stars down to a little
more than half a frame flyback, so that Thriller had enough processor time left
in each framefly so that he could insert his text-display and a music.

Et voilà the first demo with my participation was ready to publish...

It was finally released with a number of other parts by me in the GOS Party 4 -
The Revenge Demo (Side 2, Part 2) later that year.

use |CPM to start, choose Part 3


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*                                                                             *
* This program can be distributed freely and without the need of a written    *
* of a written permission by Odiesoft, as long as it is distributed free of   *
* charge!                                                                     *
*                                                                             *
* If you had to pay for this, you've been ripped off!                         *
*                                                                             *
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