https://www.temlib.org/AtariForumWiki/index.php?action=history&feed=atom&title=PL4_file_formatPL4 file format - Revision history2026-05-13T18:37:49ZRevision history for this page on the wikiMediaWiki 1.39.2https://www.temlib.org/AtariForumWiki/index.php?title=PL4_file_format&diff=15786&oldid=prev>Lp: New page2017-01-06T08:41:04Z<p>New page</p>
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PL4 *.PL4<br />
<br />
Created by Sascha Springer: http://blog.anides.de/<br />
These are essentially 2 st low resolution degas screens interlaced together.<br />
Image size is always 320x200 pixels and they are compressed using LZ4.<br />
<br />
After decompression:<br />
<br />
1 word resolution [0 = low]<br />
32 words palette 1<br />
32000 bytes screen 1<br />
1 word ?<br />
1 word resolution [0 = low]<br />
32 words palette 2<br />
32000 bytes screen 2<br />
-----------<br />
64070 bytes total<br />
<br />
When viewed the human eye merges the two alternating images into one.<br />
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Back to [[ST Picture Formats]]</div>>Lp