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		<id>http://fileformats.archiveteam.org/index.php?action=history&amp;feed=atom&amp;title=TRS-80_double_density_5.25%22_disk</id>
		<title>TRS-80 double density 5.25&quot; disk - Revision history</title>
		<link rel="self" type="application/atom+xml" href="http://fileformats.archiveteam.org/index.php?action=history&amp;feed=atom&amp;title=TRS-80_double_density_5.25%22_disk"/>
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		<updated>2026-04-22T15:25:33Z</updated>
		<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>http://fileformats.archiveteam.org/index.php?title=TRS-80_double_density_5.25%22_disk&amp;diff=45570&amp;oldid=prev</id>
		<title>Jsummers: Category:TRS-80</title>
		<link rel="alternate" type="text/html" href="http://fileformats.archiveteam.org/index.php?title=TRS-80_double_density_5.25%22_disk&amp;diff=45570&amp;oldid=prev"/>
				<updated>2023-09-28T15:28:21Z</updated>
		
		<summary type="html">&lt;p&gt;Category:TRS-80&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 15:28, 28 September 2023&lt;/td&gt;
			&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 14:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 14:&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;* [http://www.tim-mann.org/trs80faq.html TRS-80 Model I/III/4: Frequently Asked Questions]&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;* [http://www.tim-mann.org/trs80faq.html TRS-80 Model I/III/4: Frequently Asked Questions]&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;* [http://www.classiccmp.org/cpmarchives/trs80/mirrors/Tim-Mann/Early/trs80/dskspec.html Common File Formats for Emulated TRS-80 Floppy Disks]&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;* [http://www.classiccmp.org/cpmarchives/trs80/mirrors/Tim-Mann/Early/trs80/dskspec.html Common File Formats for Emulated TRS-80 Floppy Disks]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&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;ins style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&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;ins style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;[[Category:TRS-80]]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Jsummers</name></author>	</entry>

	<entry>
		<id>http://fileformats.archiveteam.org/index.php?title=TRS-80_double_density_5.25%22_disk&amp;diff=33278&amp;oldid=prev</id>
		<title>Dan Tobias: Created page with &quot;{{FormatInfo |formattype=physical |subcat=Floppy disk }} The '''TRS-80 double density 5.25&quot; disk''' was a format used with TRS-80 Model I/III/4 computers. The [[TRS-80 single ...&quot;</title>
		<link rel="alternate" type="text/html" href="http://fileformats.archiveteam.org/index.php?title=TRS-80_double_density_5.25%22_disk&amp;diff=33278&amp;oldid=prev"/>
				<updated>2019-09-08T05:07:32Z</updated>
		
		<summary type="html">&lt;p&gt;Created page with &amp;quot;{{FormatInfo |formattype=physical |subcat=Floppy disk }} The &amp;#039;&amp;#039;&amp;#039;TRS-80 double density 5.25&amp;quot; disk&amp;#039;&amp;#039;&amp;#039; was a format used with TRS-80 Model I/III/4 computers. The [[TRS-80 single ...&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;
|formattype=physical&lt;br /&gt;
|subcat=Floppy disk&lt;br /&gt;
}}&lt;br /&gt;
The '''TRS-80 double density 5.25&amp;quot; disk''' was a format used with TRS-80 Model I/III/4 computers. The [[TRS-80 single density 5.25&amp;quot; disk]] was the official format for that system, but third party manufacturers created double density drives to allow for an increased data capacity, and that eventually became an official upgrade. Drives were single-sided, but people often punched extra notches in them to make them &amp;quot;flippies&amp;quot; to use the other side, as with other platforms.&lt;br /&gt;
&lt;br /&gt;
An enhancement to the TRSDOS operating system called DoubleDOS was used.&lt;br /&gt;
&lt;br /&gt;
There were variants with 35 and 40 tracks as with the single density disks.&lt;br /&gt;
&lt;br /&gt;
When archived into files to be stored on modern systems, the [[DMK]], [[JV1]], and [[JV3]] formats are often used, generally with a .dsk extension.&lt;br /&gt;
&lt;br /&gt;
== Links ==&lt;br /&gt;
* [http://www.tim-mann.org/trs80faq.html TRS-80 Model I/III/4: Frequently Asked Questions]&lt;br /&gt;
* [http://www.classiccmp.org/cpmarchives/trs80/mirrors/Tim-Mann/Early/trs80/dskspec.html Common File Formats for Emulated TRS-80 Floppy Disks]&lt;/div&gt;</summary>
		<author><name>Dan Tobias</name></author>	</entry>

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