84 lines
3.2 KiB
HTML
84 lines
3.2 KiB
HTML
<html>
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<head>
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<title>PPU Viewer</title>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
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<meta name="generator" content="HelpNDoc Personal Edition 3.6.0.345">
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<link type="text/css" rel="stylesheet" media="all" href="css/reset.css" />
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<link type="text/css" rel="stylesheet" media="all" href="css/base.css" />
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<link type="text/css" rel="stylesheet" media="all" href="css/hnd.css" />
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<!--[if lte IE 8]>
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<link type="text/css" rel="stylesheet" media="all" href="css/ielte8.css" />
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<![endif]-->
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<style type="text/css">
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#topic_header
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{
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background-color: #EFEFEF;
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}
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</style>
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<script type="text/javascript" src="js/jquery.min.js"></script>
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<script type="text/javascript" src="js/hnd.js"></script>
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<script type="text/javascript">
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if (top.frames.length == 0)
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{
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var sTopicUrl = top.location.href.substring(top.location.href.lastIndexOf("/") + 1, top.location.href.length);
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top.location.href = "fceux.html?" + sTopicUrl;
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}
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else if (top && top.FrameTOC && top.FrameTOC.SelectTocItem)
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{
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top.FrameTOC.SelectTocItem("PPUViewer");
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}
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</script>
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</head>
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<body>
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<div id="topic_header">
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<div id="topic_header_content">
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<h1>PPU Viewer</h1>
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<div id="topic_breadcrumb">
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<a href="Debug.html">Debug</a> ›› </div>
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</div>
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<div id="topic_header_nav">
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<a href="Debug.html"><img src="img/arrow_up.png" alt="Parent"/></a>
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<a href="Debugger.html"><img src="img/arrow_left.png" alt="Previous"/></a>
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<a href="NameTableViewer.html"><img src="img/arrow_right.png" alt="Next"/></a>
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</div>
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<div class="clear"></div>
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</div>
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<div id="topic_content">
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<p><span class="rvts17">PPU Viewer</span></p>
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<p><br/></p>
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<p><br/></p>
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<p><span class="rvts12">Introduction</span></p>
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<p><br/></p>
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<p>The NES architecture includes a 6502 CPU as well as a custom video controller known as a PPU (Picture Processing Unit). The PPU's video memory is separated from the main CPU memory and can be read/written via special ports (see <a class="rvts18" href="PPU.html">PPU Memory</a>).</p>
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<p><br/></p>
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<p>The PPU viewer will display the contents of the current PPU memory. (It does not alter game data in anyway). </p>
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<p><br/></p>
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<p><span class="rvts16">Using PPU Viewer</span></p>
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<p><br/></p>
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<p><span class="rvts10">Show on Scanline</span></p>
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<p>This options makes it show what the PPU looks like when the screen is drawing that scanline. It is useful for games like SMB, that swap pattern </p>
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<p>tables mid-frame (status bar stuff).</p>
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<p><br/></p>
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<p>Right clicking on one of the PPU panels cycles the palettes it is shown with, though pattern palettes and then sprite ones</p>
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<p>Putting the mouse cursor over a tile will display the tile address. Moving cursor over palette color will give palette address.</p>
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<p class="rvps2"><span class="rvts13">Created with the Personal Edition of HelpNDoc: </span><a class="rvts14" href="http://www.helpndoc.com/create-epub-ebooks">Produce electonic books easily</a></p>
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</div>
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<div id="topic_footer">
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<div id="topic_footer_content">
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2012</div>
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</div>
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</body>
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</html>
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