Misc/abrash-black-book
Watch
1
0
Fork
You've already forked abrash-black-book
 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Remove colour attributes from body and strip most of the font tags out

Browse source
This commit is contained in:
James Gregory 2013-12-30 13:57:02 +11:00
commit c1f88ddb41
362 changed files with 1632 additions and 1706 deletions
Download patch file Download diff file Expand all files Collapse all files

6
18-05.html
View file

@ -24,7 +24,7 @@
<!--CHAPTER=18//-->
<!--PAGES=365-367//-->
<!--UNASSIGNED1//-->
<!--UNASSIGNED2//--></HEAD><BODY LINK=#0000FF ALINK=#000099 VLINK=#0000FF BGCOLOR=#FFFFFF>
<!--UNASSIGNED2//--></HEAD><body>
<CENTER>
<TABLE BORDER>
@ -53,7 +53,7 @@ FS : Video segment
GS : Unused
</PRE>
<!-- END CODE SNIP //-->
<H4 ALIGN="LEFT"><A NAME="Heading6"></A><FONT COLOR="#000077">A Layperson&rsquo;s Overview of QLIFE</FONT></H4>
<H4 ALIGN="LEFT"><A NAME="Heading6"></A>A Layperson&rsquo;s Overview of QLIFE</H4>
<P>Most likely, you&rsquo;re scratching your head right now in bemusement. I don&rsquo;t blame you; I felt the same way myself at first. It&rsquo;s actually pretty simple, though, once you have the hang of it. Basically, David runs down the change list, visiting every cell that&rsquo;s due to change in this generation, setting it to the new state, drawing it in the new state, and adjusting the counts of all its neighbors. David has a separate assembly routine for every possible change of state for a cell triplet, and he jumps to the proper routine by taking the cell triplet word, masking off the lower 9 bits, and jumping to the address where the appropriate code to perform that particular change of state resides. He does this for every entry in the change list. When this is completed, the current generation has been drawn and updated.
</P>
<P>Now David runs down the change list again to generate the change list for the next generation. In this case, for every changed cell triplet, David looks at that triplet and all affected neighbors to see which will change in the next generation. He tests for this condition by using each potentially changed cell triplet word as an index into the aforementioned lookup table of new states. If the current state matches the appropriate state for the next generation, then there&rsquo;s nothing to do and the cell is not added to the change list. If the states don&rsquo;t match, then the cell is added to the change list, and the appropriate state for the next generation is set in the cell triplet. David checks the minimum possible number of cells for change by branching to code that checks only the relevant cells around each cell triplet in the current change list; that branching is accomplished by taking the cell triplet word, masking off the lower 9 bits, setting bit 8 to a 1-bit, and branching to the routine at that address. As with everything in this amazing program, this represents the least possible work to accomplish the desired result&mdash;just three instructions:</P>
@ -80,7 +80,7 @@ jmp dx
<hr width="90%" size="1" noshade>
<div align="center">
<font face="Verdana,sans-serif" size="1">Graphics Programming Black Book &copy; 2001 Michael Abrash</font>
Graphics Programming Black Book &copy; 2001 Michael Abrash
</div>
<!-- all of the reference materials (books) have the footer and subfoot reveresed -->
<!-- reference_subfoot = footer -->