https://temlib.org/AtariForumWiki2018/index.php?action=history&feed=atom&title=Canvas_file_format 2026-10-18T23:22:17Z Revision history for this page on the wiki MediaWiki 1.30.0 https://temlib.org/AtariForumWiki2018/index.php?title=Canvas_file_format&diff=2254&oldid=prev 2018-06-03T22:43:16Z

<p>2 revisions imported</p> <table class="diff diff-contentalign-left" data-mw="interface"> <tr style="vertical-align: top;" lang="en"> <td colspan="1" style="background-color: white; color:black; text-align: center;">← Older revision</td> <td colspan="1" style="background-color: white; color:black; text-align: center;">Revision as of 22:43, 3 June 2018</td> </tr><tr><td colspan="2" style="text-align: center;" lang="en"><div class="mw-diff-empty">(No difference)</div> </td></tr></table>

AtariWikiSysop https://temlib.org/AtariForumWiki2018/index.php?title=Canvas_file_format&diff=2253&oldid=prev 2017-01-02T22:40:20Z

<p>moved <a href="/AtariForumWiki2018/index.php/Canvas" class="mw-redirect" title="Canvas">Canvas</a> to <a href="/AtariForumWiki2018/index.php/Canvas_file_format" title="Canvas file format">Canvas file format</a>: Renamed so &quot;Canvas&quot; app page can be used in the future</p> <table class="diff diff-contentalign-left" data-mw="interface"> <tr style="vertical-align: top;" lang="en"> <td colspan="1" style="background-color: white; color:black; text-align: center;">← Older revision</td> <td colspan="1" style="background-color: white; color:black; text-align: center;">Revision as of 22:40, 2 January 2017</td> </tr><tr><td colspan="2" style="text-align: center;" lang="en"><div class="mw-diff-empty">(No difference)</div> </td></tr></table>

Lp https://temlib.org/AtariForumWiki2018/index.php?title=Canvas_file_format&diff=2252&oldid=prev 2017-01-02T21:23:16Z

<p>New page</p> <p><b>New page</b></p><div>&lt;pre&gt;<br /> Canvas *.CNV, *.CPT<br /> <br /> Canvas is a simple drawing program for the Atari ST. The simplest file<br /> format it uses is .CNV. The format has no infor on the resolution of <br /> the image. The colors are stored in VDI order.<br /> <br /> 48 bytes palette, value 0-7 per byte, RGB in VDI order.<br /> 32000 bytes image data<br /> <br /> <br /> The CPT format is a compressed format:<br /> 16 words palette<br /> 1 word resolution (0=low, 1=med, 2=high resolution)<br /> ??? words compressed data, uncompressed 32000 bytes<br /> <br /> Packing algorithm: first all runlength data is transfered. Then the<br /> gaps that haven't been filled with runlengthdata is filled with the <br /> remaining data from file.<br /> Runlength data:<br /> 1 word repeat count<br /> 1 word offset<br /> n words run length data (n=4 low, 2 med, 1 high)<br /> The n words run length data are repeated (repeat count +1) times from <br /> offset bytes from the start of the file. When repeat count $FFFF signifies <br /> the end of the run length data (the offset and run length data still folow <br /> the $FFFF repeat count).<br /> ??? words data to fill the gaps that haven't been filled with run <br /> length data.<br /> &lt;/pre&gt;<br /> Back to [[ST Picture Formats]]</div>

Lp