+CharlieChaplin Posted November 16, 2006 Share Posted November 16, 2006 (edited) Hello folks, attached is an article by Joel goodwin (from New Atari User, issue 52) on how to achieve artifacting on PAL Ataris. The article also contains a type-in listing in Atari Basic. Since i am much too lazy to type in the article and the listing, I scanned everything in black & white and 300 dpi. Hopefully someone finds this information useful... greetings, Andreas Magenheimer. Edited November 16, 2006 by CharlieChaplin Quote Link to comment Share on other sites More sharing options...
+CharlieChaplin Posted November 16, 2006 Author Share Posted November 16, 2006 Well, and here is part/page two of the article (tried zipping all 4 pages, but they had 4 megabytes total and thus I could not attach them; looks like there is a one-megabyte barrier for attachments)... anyway, here it is: Quote Link to comment Share on other sites More sharing options...
+CharlieChaplin Posted November 16, 2006 Author Share Posted November 16, 2006 Well, and here is part three of the article... Quote Link to comment Share on other sites More sharing options...
+CharlieChaplin Posted November 16, 2006 Author Share Posted November 16, 2006 Well, and here is the last part of the article... Quote Link to comment Share on other sites More sharing options...
+CharlieChaplin Posted November 16, 2006 Author Share Posted November 16, 2006 (edited) Hello folks, in the above article, they wrote that the forthcoming issue of Page 6 / NAU (issue 53) would contain a game (named "Runaround") that uses PAL artifacting. Alas, I do not have this issue, so I cannot post it here... but if someone else has it, why not share it with us ?!? Besides, maybe someone can post a small demo-program for NTSC artifacting (in Atari Basic), so we can directly compare the differences between NTSC and PAL artifacting... greetings, Andreas Magenheimer. Edited November 16, 2006 by CharlieChaplin Quote Link to comment Share on other sites More sharing options...
Ross PK Posted November 17, 2006 Share Posted November 17, 2006 If you do a Google search on page 6 you'll find their website, they have nearly or all their issues up online. Quote Link to comment Share on other sites More sharing options...
pseudografx Posted November 17, 2006 Share Posted November 17, 2006 If you do a Google search on page 6 you'll find their website, they have nearly or all their issues up online. The Page 6 archive in fact only contains issues up to #30. Quote Link to comment Share on other sites More sharing options...
SinisterSoft Posted January 10, 2014 Share Posted January 10, 2014 I know this was posted in 2006, but if you read the article he lets the reader know it's based on another article (from 1982) written by Anthony Ball. That's me! 5 Quote Link to comment Share on other sites More sharing options...
thorfdbg Posted January 10, 2014 Share Posted January 10, 2014 Hello folks, attached is an article by Joel goodwin (from New Atari User, issue 52) on how to achieve artifacting on PAL Ataris. The article also contains a type-in listing in Atari Basic. Since i am much too lazy to type in the article and the listing, I scanned everything in black & white and 300 dpi. Hopefully someone finds this information useful... greetings, Andreas Magenheimer. Sorry that you had to remove it. But maybe you want to answer the following question: There are two types of artifacting on PAL: One is the usual color-carrier cross-talk that creates the artifacts on NTSC. The difference is that you don't need a 1:2 sampling (since the color-carrier sits at a different position in PAL), but rather a 4:10 sampling, i.e. draw a bit-pattern line 01010010100 etc... This will give "some" artifacting in Gr.8. By adding offsets to the pattern, a couple of colors can be generated. Second type of artifacting is to exploit the vertical color subsampling in PAL, i.e. chroma is averaged every other line. That is, if you draw two horizontal lines of the same luminance, but with different hues, the two hues will be mixed. The latter is often called PAL-artifacting, though it works by completely different means than the hi-res color-carrier cross-talk the NTSC artifacting is based on. Do you happen to know what the article described? Or is there any third effect I am not aware of? Quote Link to comment Share on other sites More sharing options...
Bryan Posted January 10, 2014 Share Posted January 10, 2014 I know this was posted in 2006, but if you read the article he lets the reader know it's based on another article (from 1982) written by Anthony Ball. That's me! Hi Anthony! It's great to see people reappear on the scene! Quote Link to comment Share on other sites More sharing options...
SinisterSoft Posted January 10, 2014 Share Posted January 10, 2014 thordbg: It's a long time ago, I was only about 16 at the time, but I remember managing to generate about 20+ colours using various combinations the 4:10 and vertical methods - using diagonal crosshatches. brian: Thanks. 1 Quote Link to comment Share on other sites More sharing options...
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