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PostPosted: Tue Oct 21, 2003 10:36 am 
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 Post subject: Re: 8 mbit questions
PostPosted: Tue Oct 21, 2003 12:52 pm 
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Location: The Netherlands
analmux wrote:
I'm working on a 8mbit flashcart demo with some 3d moving objects in 50 fps. I might use your flash programming software and implement the fastloading routine.

-----
mux


This is great, something like a 3D labyrinth would be cool... (Wolfenstein) 8)



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 Post subject: Re: 8 mbit questions
PostPosted: Tue Oct 21, 2003 1:57 pm 
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analmux wrote:
Great!!!

Finally I had some spare time this weekend to test my flashcarts. They're perfect.

I still have one question:

when the atari does a cold start, on which address and in which bank are the cartridge startup vectors supposed to be located ??

Does the atari start up in bank 0?


On the 1mbit cartridge, from a clean power-off the cartridge will always start in bank zero. So put your start/init vectors and cart information at the end of the first 8k block of data.

On the 8mbit cartridge, from a clean power-off the cartridge will always start in bank 128, the last bank. In this case place your start/init vectors and cart information at the end of the last 8k block of the image.

analmux wrote:
And another thing. As most of the people have Sio2pc cables and software. It might be a good idea to use a fast-loader that loads a sector in a third of the time.


I was considering this for the 8mbit images since they require SIO2PC to run and the flashing software could be larger. Having a Warp+ OS installed or other high-speed patched OS will take care of this too.

The 1mbit flash software has to fit into 16 sectors and right now there is only about 4 bytes of space left there ;)

analmux wrote:
I'm working on a 8mbit flashcart demo with some 3d moving objects in 50 fps. I might use your flash programming software and implement the fastloading routine.


Wow now I gotta see that. :shock:

I wanted to do some graphical stuff or a nicer menu with graphics but I just dont know much about programming graphic modes myself. From your super-mario demo it looks like you know everything, it should be interesting to watch :)


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PostPosted: Wed Oct 22, 2003 9:19 am 
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I am also waiting for a nice demo for this cart... would be cool if you could make some small engine that uses a 3D labyrinth and just move around. 50fps is cool but 25fps would be also be incredible...

Seems you have some very good ideas... I was also playing around with some ideas only first need to play around with this cart...



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PostPosted: Wed Oct 22, 2003 10:16 am 
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PostPosted: Wed Oct 22, 2003 12:40 pm 
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analmux wrote:
I'll use 1 kb per frame so I'll just program 1000 frames in the cart. That's 1000/50 = 20 seconds of animation.

The burning routine will calculate the pictures on the Atari itself, then burn them away to the flashcart.

-----
mux


Hmm oke but 50fps is to fast for the eye I think, 25fps would be already good for smooth motion...



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PostPosted: Wed Oct 22, 2003 3:43 pm 
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PostPosted: Thu Oct 23, 2003 5:14 am 
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analmux wrote:
Have you ever noticed how chunky a 25 fps scrolling routine looks?

I think 50 fps will give a real analogue movement, but I must experiment with your advice. Then I might make a longer movie or a bigger screen. :D

-----
mux


Hmm cool with some compression we can watch the matrix :lol:



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