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		<id>http://fileformats.archiveteam.org/index.php?action=history&amp;feed=atom&amp;title=Bug_Repellent</id>
		<title>Bug Repellent - Revision history</title>
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		<updated>2026-04-23T15:00:08Z</updated>
		<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>http://fileformats.archiveteam.org/index.php?title=Bug_Repellent&amp;diff=49384&amp;oldid=prev</id>
		<title>Parchivist at 06:31, 8 September 2024</title>
		<link rel="alternate" type="text/html" href="http://fileformats.archiveteam.org/index.php?title=Bug_Repellent&amp;diff=49384&amp;oldid=prev"/>
				<updated>2024-09-08T06:31:33Z</updated>
		
		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table class='diff diff-contentalign-left'&gt;
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			&lt;td colspan='2' style=&quot;background-color: white; color:black;&quot;&gt;← Older revision&lt;/td&gt;
			&lt;td colspan='2' style=&quot;background-color: white; color:black;&quot;&gt;Revision as of 06:31, 8 September 2024&lt;/td&gt;
			&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 25:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 25:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;* [https://archive.org/details/ahoy-magazine-29/page/n101/mode/2up C-128 Bug Repellent and updated C-64 Bug Repellent] (Ahoy! May 1986 pg 98)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;* [https://archive.org/details/ahoy-magazine-29/page/n101/mode/2up C-128 Bug Repellent and updated C-64 Bug Repellent] (Ahoy! May 1986 pg 98)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;* [https://archive.org/details/ahoy-magazine-41/page/n9/mode/2up Buck Childress updates] (Ahoy! May 1987 pg 6)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;* [https://archive.org/details/ahoy-magazine-41/page/n9/mode/2up Buck Childress updates] (Ahoy! May 1987 pg 6)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;background: #ffa; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;* [https://archive.org/details/ahoy-magazine-disks Ahoy Magazine Disk Image Collection]&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;* [https://archive.org/details/ahoy-magazine-disks Ahoy Magazine Disk Image Collection] &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;(&lt;/ins&gt;[https://diskmaster.textfiles.com/disk/Magazine%20-%20Digital.html alt &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;copy]&lt;/ins&gt;)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;background: #ffa; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;* &lt;/del&gt;[https://diskmaster.textfiles.com/disk/Magazine%20-%20Digital.html &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Ahoy Magazine Disk Image Collection (&lt;/del&gt;alt)&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;]&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Parchivist</name></author>	</entry>

	<entry>
		<id>http://fileformats.archiveteam.org/index.php?title=Bug_Repellent&amp;diff=49383&amp;oldid=prev</id>
		<title>Parchivist: Created page with &quot;{{FormatInfo |subcat=Error detection and correction |released=1987 }} '''Bug Repellent''' by Michael Kleinert and David Barron is a type-in program checker for Commodore used ...&quot;</title>
		<link rel="alternate" type="text/html" href="http://fileformats.archiveteam.org/index.php?title=Bug_Repellent&amp;diff=49383&amp;oldid=prev"/>
				<updated>2024-09-08T06:30:38Z</updated>
		
		<summary type="html">&lt;p&gt;Created page with &amp;quot;{{FormatInfo |subcat=Error detection and correction |released=1987 }} &amp;#039;&amp;#039;&amp;#039;Bug Repellent&amp;#039;&amp;#039;&amp;#039; by Michael Kleinert and David Barron is a type-in program checker for Commodore used ...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;{{FormatInfo&lt;br /&gt;
|subcat=Error detection and correction&lt;br /&gt;
|released=1987&lt;br /&gt;
}}&lt;br /&gt;
'''Bug Repellent''' by Michael Kleinert and David Barron is a type-in program checker for Commodore used by Ahoy! magazine.&lt;br /&gt;
&lt;br /&gt;
It generates a two-letter checksum for each line.&lt;br /&gt;
&lt;br /&gt;
The algorithm was updated in Issue 6 (Jun 1984)&lt;br /&gt;
&lt;br /&gt;
The programs were substantially updated by Buck Childress in Issue 41 (May 1987), adding immediate feedback, auto save and an updated algorithm.&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
== Sample Output ==&lt;br /&gt;
[[File:Bug Repellent.jpg]] original style&lt;br /&gt;
&lt;br /&gt;
[[File:Bug Repellent - new style.jpg]] new style&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
== Links ==&lt;br /&gt;
* [https://archive.org/details/ahoy-magazine-04/page/n37/mode/2up C-64 Bug Repellent] (Ahoy! Apr 1984 pg 39)&lt;br /&gt;
* [https://archive.org/details/ahoy-magazine-05/page/n35/mode/2up VIC 20 Bug Repellent] (Ahoy! May 1984 pg 37)&lt;br /&gt;
* [https://archive.org/details/ahoy-magazine-06/page/n3/mode/2up Updated algorithm] (Ahoy Jun 1984 pg 4)&lt;br /&gt;
* [https://archive.org/details/ahoy-magazine-15/page/n63/mode/2up Updated VIC 20 Bug Repellent] (Ahoy! Mar 1985 pg 64)&lt;br /&gt;
* [https://archive.org/details/ahoy-magazine-29/page/n101/mode/2up C-128 Bug Repellent and updated C-64 Bug Repellent] (Ahoy! May 1986 pg 98)&lt;br /&gt;
* [https://archive.org/details/ahoy-magazine-41/page/n9/mode/2up Buck Childress updates] (Ahoy! May 1987 pg 6)&lt;br /&gt;
* [https://archive.org/details/ahoy-magazine-disks Ahoy Magazine Disk Image Collection]&lt;br /&gt;
* [https://diskmaster.textfiles.com/disk/Magazine%20-%20Digital.html Ahoy Magazine Disk Image Collection (alt)]&lt;/div&gt;</summary>
		<author><name>Parchivist</name></author>	</entry>

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