<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html><head><title>PPU Viewer</title> <meta http-equiv="Content-Style-Type" content="text/css"> <style type="text/css"><!-- body { margin: 5px 5px 5px 5px; background-color: #ffffff; } /* ========== Text Styles ========== */ hr { color: #000000} body, table /* Normal text */ { font-size: 10pt; font-family: 'Arial', 'Helvetica', sans-serif; font-style: normal; font-weight: normal; color: #000000; text-decoration: none; ; } span.rvts1 /* Heading */ { font-weight: bold; color: #0000ff; } span.rvts2 /* Subheading */ { font-weight: bold; color: #000080; } span.rvts3 /* Keywords */ { font-style: italic; color: #800000; } a.rvts4, span.rvts4 /* Jump 1 */ { color: #008000; text-decoration: underline; } a.rvts5, span.rvts5 /* Jump 2 */ { color: #008000; text-decoration: underline; } span.rvts6 /* Font Hint */ { color: #808080; } span.rvts7 /* Font Hint Title */ { font-size: 15pt; font-family: 'Tahoma', 'Geneva', sans-serif; font-weight: bold; color: #404040; } span.rvts8 /* Font Hint Bold */ { font-weight: bold; color: #808080; } span.rvts9 /* Font Hint Italic */ { font-style: italic; color: #808080; } span.rvts10 { font-size: 24pt; text-decoration: underline; } span.rvts11 { font-size: 18pt; } span.rvts12 { font-size: 14pt; } span.rvts13 { font-size: 12pt; } a.rvts14, span.rvts14 { color: #0000ff; text-decoration: underline; } a.rvts14:hover { color: #0000ff; } span.rvts15 /* Font Style */ { font-size: 16pt; font-family: 'Tahoma', 'Geneva', sans-serif; color: #ffffff; } span.rvts16 /* Font Style */ { font-family: 'MS Sans Serif', 'Geneva', sans-serif; color: #808080; } span.rvts17 /* Font Style */ { font-family: 'Verdana', 'Geneva', sans-serif; font-style: italic; color: #c0c0c0; } a.rvts18, span.rvts18 /* Font Style */ { font-family: 'Verdana', 'Geneva', sans-serif; font-style: italic; color: #6666ff; text-decoration: underline; } /* ========== Para Styles ========== */ p,ul,ol /* Paragraph Style */ { text-align: left; text-indent: 0px; padding: 0px 0px 0px 0px; margin: 0px 0px 0px 0px; } .rvps1 /* Centered */ { text-align: center; } .rvps2 /* Paragraph Style */ { background: #9fbed0; margin: 0px 0px 20px 0px; } .rvps3 /* Paragraph Style */ { text-align: center; background: #e4e4e4; margin: 20px 0px 0px 0px; } .rvps4 /* Paragraph Style */ { border-color: #c0c0c0; border-style: solid; border-width: 1px; border-right: none; border-bottom: none; border-left: none; background: #ffffff; padding: 3px 0px 0px 0px; margin: 27px 0px 0px 0px; } --></style> <script type="text/javascript">if(top.frames.length == 0) { top.location.href="../fceux-2.0.2.htm?{D0C2EE8C-8862-4CC2-BFF6-BFAC535BA3FB}.htm"; }</script> <meta name="generator" content="HelpNDoc Free"></head> <body> <p class=rvps2><span class=rvts15>PPU Viewer</span></p> <p><span class=rvts10>PPU Viewer</span></p> <p><br></p> <p><br></p> <p><span class=rvts11>Introduction</span></p> <p><br></p> <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=rvts14 href="{9C73EB3E-118D-451A-AAE8-BBF99A5FDEEB}.htm">PPU Memory</a>).</p> <p><br></p> <p>The PPU viewer will display the contents of the current PPU memory. (It does not alter game data in anyway). </p> <p><br></p> <p><span class=rvts12>Using PPU Viewer</span></p> <p><br></p> <p><span class=rvts13>Show on Scanline</span></p> <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> <p>tables mid-frame (status bar stuff).</p> <p><br></p> <p>Right clicking on one of the PPU panels cycles the palettes it is shown with, though pattern palettes and then sprite ones</p> <p>Putting the mouse cursor over a tile will display the tile address. Moving cursor over palette color will give palette address.</p> <p class=rvps3><span class=rvts16>2008</span></p> <p class=rvps4><span class=rvts17>This help file has been generated by the freeware version of </span><a class=rvts18 href="http://www.ibe-software.com/products/software/helpndoc/" target="_blank">HelpNDoc</a></p> </body></html>