Misc/abrash-black-book
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Retidy, removing align=left from headings and empty paragraphs

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James Gregory 2013-12-30 15:37:13 +11:00
commit a96a114403
362 changed files with 8472 additions and 5040 deletions
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31
31-05.html
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@ -1,5 +1,4 @@
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
@ -19,17 +18,21 @@
<center>
<table border="1">
<tr>
<td><a href="31-04.html">Previous</a></td>
<td>
<a href="31-04.html">Previous</a>
</td>
<td><a href="index.html">Table of Contents</a></td>
<td>
<a href="index.html">Table of Contents</a>
</td>
<td><a href="32-01.html">Next</a></td>
<td>
<a href="32-01.html">Next</a>
</td>
</tr>
</table>
</center>
<p><br /></p>
<p><b>LISTING 31.2 L31-2.ASM</b></p>
<pre>
; Program to demonstrate the two pages available in 320x400
@ -299,16 +302,20 @@ endStart
<p>You can, if you wish, use the display memory organization of 320x400 mode in 320x200 mode by modifying <b>Set320x400Mode</b> to leave the maximum scan line setting at 1 in the mode set. (The version of <b>Set320x400Mode</b> in Listings 31.1 and 31.2 forces the maximum scan line to 0, doubling the effective resolution of the screen.) Why would you want to do that? For one thing, you could then choose from not two but <i>four</i> 320x200 256-color display pages, starting at offsets 0, 4000H, 8000H, and 0C000H in display memory. For another, having only half as many pixels per screen can as much as double drawing speeds; that&rsquo;s one reason that many games run at 320x200, and even then often limit the active display drawing area to only a portion of the screen.</p>
<p><br /></p>
<center>
<table border="1">
<tr>
<td><a href="31-04.html">Previous</a></td>
<td>
<a href="31-04.html">Previous</a>
</td>
<td><a href="index.html">Table of Contents</a></td>
<td>
<a href="index.html">Table of Contents</a>
</td>
<td><a href="32-01.html">Next</a></td>
<td>
<a href="32-01.html">Next</a>
</td>
</tr>
</table>
</center>