https://www.temlib.org/AtariForumWiki/index.php?action=history&feed=atom&title=Line_A 2026-05-02T05:13:25Z Revision history for this page on the wiki MediaWiki 1.39.2 https://www.temlib.org/AtariForumWiki/index.php?title=Line_A&diff=14793&oldid=prev 2011-11-29T13:15:45Z

<p><span dir="auto"><span class="autocomment">Introduction</span></span></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 09:15, 29 November 2011</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1">Line 1:</td> <td colspan="2" class="diff-lineno">Line 1:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Introduction==</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Introduction==</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>In order to provide ''quick-and-dirty'' access to the [[Assembly language|assembler-level]] graphics routines, [[Atari]] engineers have set up the [[MC68000]]'s '''Line A''' [[exception]] as an interface to several useful routines. The Line A interface is faster than going through [[GEM]]'s [[VDI]] and has some extra features. Also, Line A calls require less application  </div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>In order to provide ''quick-and-dirty'' access to the [[Assembly language|assembler-level]] graphics routines, [[Atari]] engineers have set up the [[<ins style="font-weight: bold; text-decoration: none;">CPU|</ins>MC68000]]'s '''Line A''' [[exception]] as an interface to several useful routines. The Line A interface is faster than going through [[GEM]]'s [[VDI]] and has some extra features. Also, Line A calls require less application  </div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>code than their VDI counterparts. Of course, Line A does not replace the VDI completely, but if an application only needs a few primitive graphics functions (and wants maximum performance), then Line A is sufficient and optimal.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>code than their VDI counterparts. Of course, Line A does not replace the VDI completely, but if an application only needs a few primitive graphics functions (and wants maximum performance), then Line A is sufficient and optimal.</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr> </table>

>Wongck https://www.temlib.org/AtariForumWiki/index.php?title=Line_A&diff=14792&oldid=prev 2006-10-15T00:19:22Z

<p></p> <a href="https://www.temlib.org/AtariForumWiki/index.php?title=Line_A&amp;diff=14792&amp;oldid=14791">Show changes</a>

>Rb https://www.temlib.org/AtariForumWiki/index.php?title=Line_A&diff=14791&oldid=prev 2006-09-13T09:17:22Z

<p></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 05:17, 13 September 2006</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1100">Line 1,100:</td> <td colspan="2" class="diff-lineno">Line 1,100:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>drawaddr:      ds.l            1</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>drawaddr:      ds.l            1</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>                 end</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>                 end</div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">&lt;/pre></ins></div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">&lt;/pre&gt;</del></div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">Back to [[Programming]]</ins></div></td></tr> </table>

>Zorro 2 https://www.temlib.org/AtariForumWiki/index.php?title=Line_A&diff=14790&oldid=prev 2006-09-12T14:33:06Z

<p>revert. I&#039;m confused now...</p> <a href="https://www.temlib.org/AtariForumWiki/index.php?title=Line_A&amp;diff=14790&amp;oldid=14789">Show changes</a>

>Tompee https://www.temlib.org/AtariForumWiki/index.php?title=Line_A&diff=14789&oldid=prev 2006-09-12T14:21:14Z

<p>duplication, added redirect. Let&#039;s look at what has already been done!</p> <a href="https://www.temlib.org/AtariForumWiki/index.php?title=Line_A&amp;diff=14789&amp;oldid=14788">Show changes</a>

>Tompee https://www.temlib.org/AtariForumWiki/index.php?title=Line_A&diff=14788&oldid=prev 2006-06-23T17:28:45Z

<p></p> <a href="https://www.temlib.org/AtariForumWiki/index.php?title=Line_A&amp;diff=14788">Show changes</a>

>Simonsunnyboy