At 20:28 21/07/99 +0200, you wrote:
>> If that's so then you can create a game/program showing 3-layers!!!
>> The background doesn't move or only moves up and down, which is the v9938
>> screen. If it's a bit vague, that doesn't matter. It's just a background.
>> The second and third layer are the layers of the P1-mode...
>
>I am sure the GFX9000 alone can display more than 3 layers using a
>few tricks... It might not be 3 full screen layers however..
>
>btw. I would like to work with a good coder to do a nice
>GFX9000/Moonsound demo (I volunteer for the music part!)..
In the past, the time of the release of the first version of GRAFX9000,
I've made some test with the superimpose capability of the GRAFX9000, just
forget about the clock synchronisation explanned by Koen van Hartingsveldt
and Peter Burkhard, there is an other problem.
Since the superimpose of the GRAFX9000 use pulse for line and frame
synchronisation instead of using a VCO and a PLL (Phase Locked Loop) to
ajust the clock oscilator frequency input.
The result when you want to use the line interupt capability of the V990 is
that you computer hang!
I noticed that when I wanted to add a background on a P1 mode multi layer
scrolling. Then only way to make the multi scrolling work again was to
switch off the superimpose mode.
Martial.
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