M000017.html in dsktool-0.1.3

- old
+ new
@@ -3,20 +3,20 @@
      PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
      "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 
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-  <title>new (DSK)</title>
+  <title>is_dos33? (DSK)</title>
   <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
   <link rel="stylesheet" href="../.././rdoc-style.css" type="text/css" media="screen" />
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 <body class="standalone-code">
-  <pre><span class="ruby-comment cmt"># File lib/DSK.rb, line 22</span>
-        <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">initialize</span>(<span class="ruby-identifier">file_bytes</span>=<span class="ruby-value str">&quot;\0&quot;</span><span class="ruby-operator">*</span><span class="ruby-constant">DSK_FILE_LENGTH</span>)        
-                <span class="ruby-keyword kw">if</span> (<span class="ruby-identifier">file_bytes</span>.<span class="ruby-identifier">length!</span>=<span class="ruby-constant">DSK_FILE_LENGTH</span>) <span class="ruby-keyword kw">then</span>
-                        <span class="ruby-identifier">raise</span> <span class="ruby-node">&quot;DSK files must be #{DSK_FILE_LENGTH} bytes long (was #{file_bytes.length} bytes)&quot;</span>
-                <span class="ruby-keyword kw">end</span>
-                <span class="ruby-ivar">@file_bytes</span>=<span class="ruby-identifier">file_bytes</span>
-                <span class="ruby-ivar">@files</span>={}
+  <pre><span class="ruby-comment cmt"># File lib/DSK.rb, line 13</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">&lt;=</span><span class="ruby-value">34</span>) <span class="ruby-operator">&amp;&amp;</span> (<span class="ruby-ivar">@file_bytes</span>[<span class="ruby-value">0x11002</span>]<span class="ruby-operator">&lt;=</span><span class="ruby-value">15</span>) <span class="ruby-operator">&amp;&amp;</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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