ye olde algo xD

Very good effect!

Thanks.

fixed&improoved

cool effect. I use this in my demo, but with rotating dots: https://youtu.be/5Eg14WLJmEk?t=329
try it with mixing this shade effect with some rotating.

And I used same effect:
http://www.pouet.net/prod.php?which=68499

(caution:some boobs at screen)

If you have time, you can try it with 4 colour character mode with half horizontal resolution also, I think it would be also very impressive

If you have time, you can try it with 4 colour character mode with half horizontal resolution also, I think it would be also very impressive

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fixed&improoved

One hint for getting bit more CPU and speed, if you set port 0bfh to 0ch then waits are eliminated