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Atari pencils pic


oky2000

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I downloaded the Antic Magazine June, 1985 but did not find the article for this program. It must have been "program only" on the distribution diskette. I was interested in learning how the program works.

 

Magazine link: http://www.atarimania.com/mags/pdf/Antic_Vol_4_No_2.pdf

Should be straight forward code - set up a display list with an interrupt on each scanline which increments one of the colour registers. Similar to the ever present "Atari Rainbow" effect, but this one of course is static.

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It's a really effective way of showing programmers how they should have viewed the facilities. Most converted games never used anything like the amount of DLI palette colour swaps that would have benefited regular bitmapped colours IMO. You have the palette colour choices there, if you don't use them they are wasted.

 

I've attached the image (300% pixel resize for viewing comfort) so it won't get lost now :D

post-17970-0-95509400-1390686106_thumb.png

Edited by oky2000
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Well,

 

you can also find the pencils in various old(er) demos, e.g.:

 

- the Discape demo by Anthony Ramos

 

- Grafik und Sound Demo by Peter Sabath (two versions, the older one shows the pencils, the newer one just plays with the rainbow-colours)

 

Andreas Koch.

 

Discape.zip

psabath.zip

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  • 7 years later...

 

Pencils are from about half way down page 221 onward for a few pages showing different combinations of horizontally and vertically drawn coloured pencils and different ways each machine could draw them (with and without CPU assistance etc). 

 

(seeing as this is linked to from the thread just locked might as well tell people where they actually are in that massive thread topic)

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