<story><title>A mixed-format, mixed-architecture, mixed-sided diskette (2008)</title><url>http://trixter.oldskool.org/2008/09/28/the-diskette-that-blew-trixters-mind/</url><text></text></story><parent_chain></parent_chain><comment><author>mmphosis</author><text>The C64 did not autoboot.  You had to type:&lt;p&gt;&lt;pre&gt;&lt;code&gt;  LOAD&amp;quot;*&amp;quot;,8
&lt;/code&gt;&lt;/pre&gt;
or&lt;p&gt;&lt;pre&gt;&lt;code&gt;  LOAD &amp;quot;*&amp;quot;,8,0
  RUN
&lt;/code&gt;&lt;/pre&gt;
&lt;i&gt;as far as creating the original disc, not that hard. format the whole disc for a commodore. use track 18 sector 0 for bam and sector 1 for directory (just one sector). calculate number of tracks needed for commodore program storage. mark the rest of the disk sectors as used.&lt;p&gt;move the disk to a pc. using a custom program, format the individual tracks not used by the commodore for the pc (do not use the dos format, it would wipe the disk of commodore info). so, the back of the floppy and the tracks not in commodore space. mark the tracks not formatted for pc as bad in the fat sectors on track 1.&lt;/i&gt;&lt;p&gt;&lt;a href=&quot;http:&amp;#x2F;&amp;#x2F;trixter.oldskool.org&amp;#x2F;2008&amp;#x2F;09&amp;#x2F;28&amp;#x2F;the-diskette-that-blew-trixters-mind&amp;#x2F;#comment-7310&quot; rel=&quot;nofollow&quot;&gt;http:&amp;#x2F;&amp;#x2F;trixter.oldskool.org&amp;#x2F;2008&amp;#x2F;09&amp;#x2F;28&amp;#x2F;the-diskette-that-ble...&lt;/a&gt;&lt;p&gt;&lt;i&gt;You could even do three format with IBM, Apple, and Commodore so long as the Apple and Commodore formatting was on flip sides of the disk.&lt;/i&gt;&lt;p&gt;&lt;a href=&quot;http:&amp;#x2F;&amp;#x2F;trixter.oldskool.org&amp;#x2F;2008&amp;#x2F;09&amp;#x2F;28&amp;#x2F;the-diskette-that-blew-trixters-mind&amp;#x2F;#comment-7321&quot; rel=&quot;nofollow&quot;&gt;http:&amp;#x2F;&amp;#x2F;trixter.oldskool.org&amp;#x2F;2008&amp;#x2F;09&amp;#x2F;28&amp;#x2F;the-diskette-that-ble...&lt;/a&gt;</text></comment>
<story><title>A mixed-format, mixed-architecture, mixed-sided diskette (2008)</title><url>http://trixter.oldskool.org/2008/09/28/the-diskette-that-blew-trixters-mind/</url><text></text></story><parent_chain></parent_chain><comment><author>jamesbrownuhh</author><text>I&amp;#x27;ve never heard of this being used for hybrid C64&amp;#x2F;PC discs before, but the technique itself isn&amp;#x27;t all that new - as far back as the late 1980s there were dual-format Atari ST and Amiga discs which would work on either system. Some were mounted as cover discs on magazines, and indeed at least one magazine managed a three-way disc that was ST, Amiga and PC compatible.&lt;p&gt;Some released software was dual-format as well - I particularly recall the Atari ST&amp;#x2F;Amiga version of Starglider. While the ST and Amiga boxes were both separately labelled, the actual disc inside was the same, and worked on either machine.</text></comment>