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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44-05.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="44-04.html">Previous</a></td>
<td>
<a href="44-04.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="44-06.html">Next</a></td>
<td>
<a href="44-06.html">Next</a>
</td>
</tr>
</table>
</center>
<p><br /></p>
<p>Given the above assumptions, drawing text is easy; we simply copy each byte of each character to the appropriate location in display memory, and <i>voila</i>, we&rsquo;re done. Text copying is done in write mode 0, in which the byte written to display memory is copied to all four planes at once; hence, 1-bits turn into white (color value 0FH, with 1-bits in all four planes), and 0-bits turn into black (color value 0). This is faster than using write mode 3 because write mode 3 requires a read/write of display memory (or at least preloading the latches with the background color), while the write mode 0 approach requires only a write to display memory.</p>
<table width="100%">
@ -53,16 +56,20 @@
<p><a id="Fig1"><img src="images/44-01.jpg" /><br />
<b>Figure 44.1</b></a>&nbsp;&nbsp;<i>Memory allocation for mode 10h page flipping.</i></p>
<p><br /></p>
<center>
<table border="1">
<tr>
<td><a href="44-04.html">Previous</a></td>
<td>
<a href="44-04.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="44-06.html">Next</a></td>
<td>
<a href="44-06.html">Next</a>
</td>
</tr>
</table>
</center>