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<title>is_dos33? (DSK)</title>
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<pre><span class="ruby-comment cmt"># File lib/DSK.rb, line 14</span>
<span class="ruby-keyword kw">def</span> <span class="ruby-identifier">is_dos33?</span>
<span class="ruby-comment cmt"># VTOC is at offset 0x11000</span>
<span class="ruby-comment cmt"># bytes 1/2/3 are a track number, sector number and DOS version number</span>
<span class="ruby-comment cmt"># see if these are reasonable values</span>
(<span class="ruby-ivar">@file_bytes</span>[<span class="ruby-value">0x11001</span>]<span class="ruby-operator"><=</span><span class="ruby-value">34</span>) <span class="ruby-operator">&&</span> (<span class="ruby-ivar">@file_bytes</span>[<span class="ruby-value">0x11002</span>]<span class="ruby-operator"><=</span><span class="ruby-value">15</span>) <span class="ruby-operator">&&</span> (<span class="ruby-ivar">@file_bytes</span>[<span class="ruby-value">0x11003</span>]<span class="ruby-operator">==</span><span class="ruby-value">3</span>)
<span class="ruby-keyword kw">end</span></pre>
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6 entries across 6 versions & 1 rubygems