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Mark Vergeer
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Joined: 01/16/2006
Trick for hires multicolor screens on C64

Squeezing more out of the c64 than was thought possible by the designers was something most demo-groups were proud of. To get more than 4 colours per 8x8 pixel square in multicolor in still pictures I often used sprites (single and multicolour ones) and raster interrupts to display pictures that used more than 4 colours per 8x8 pixel square.
A similar technique was used by later demos using raster interrupts and quickly alternating colours combined with a pixel scroll (1/2 pixel hires multicolour). Hard to explain but you'll know what I am talking about when you see it.
O wait - this is a good site describing the c64 graphics modes I described above.

I did have Deluxe Paint for the c64 in the end but didn't use it that much. I was busy adjusting to my 8088 based EGA equipped 14Mhz PC-XT using Turbo Pascal/GEM/Windows. Whoops I meant Koala Painter - Deluxe Paint was for the Amiga, although I remember owning a version for C64 that came with the drawing of a King Tut - probably wasn't deluxe paint, will have to try and find what that was.

Bill, you used Geos for PC? I used that too Geoworks Ensemble, but it was a very different beast on PC though.



Editor / Pixelator - Armchair Arcade, Inc.
www.markvergeer.nl

Armchair Arcade Editor

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