aaru-dps/docs
1
0
Fork 0
mirror of https://github.com/aaru-dps/docs.git synced 2025-12-16 19:24:38 +00:00
Code Issues Packages Projects Releases Wiki Activity
Files
505d40b7c1c08f88717595748de99c3d10025665
docs/HD-Copy.html

328 lines
17 KiB
HTML
Raw Blame History

<!DOCTYPE html>
<html lang="en" dir="ltr" class="client-nojs">
<head>
<title>IMG - Just Solve the File Format Problem</title>
<meta charset="UTF-8" />
<meta name="generator" content="MediaWiki 1.19.2" />
<link rel="shortcut icon" href="/favicon.ico" />
<link rel="search" type="application/opensearchdescription+xml" href="/opensearch_desc.php" title="Just Solve the File Format Problem (en)" />
<link rel="EditURI" type="application/rsd+xml" href="http://fileformats.archiveteam.org/api.php?action=rsd" />
<link rel="copyright" href="http://creativecommons.org/publicdomain/zero/1.0/" />
<link rel="alternate" type="application/atom+xml" title="Just Solve the File Format Problem Atom feed" href="/index.php?title=Special:RecentChanges&amp;feed=atom" />
<link rel="stylesheet" href="http://fileformats.archiveteam.org/load.php?debug=false&amp;lang=en&amp;modules=mediawiki.legacy.commonPrint%2Cshared%7Cskins.vector&amp;only=styles&amp;skin=vector&amp;*" />
<meta name="ResourceLoaderDynamicStyles" content="" />
<style>a:lang(ar),a:lang(ckb),a:lang(fa),a:lang(kk-arab),a:lang(mzn),a:lang(ps),a:lang(ur){text-decoration:none}a.new,#quickbar a.new{color:#ba0000}
/* cache key: justsolve:resourceloader:filter:minify-css:7:c88e2bcd56513749bec09a7e29cb3ffa */
</style>
<script src="http://fileformats.archiveteam.org/load.php?debug=false&amp;lang=en&amp;modules=startup&amp;only=scripts&amp;skin=vector&amp;*"></script>
<script>if(window.mw){
mw.config.set({"wgCanonicalNamespace":"","wgCanonicalSpecialPageName":false,"wgNamespaceNumber":0,"wgPageName":"IMG","wgTitle":"IMG","wgCurRevisionId":16715,"wgArticleId":4456,"wgIsArticle":true,"wgAction":"view","wgUserName":null,"wgUserGroups":["*"],"wgCategories":["File Formats","Electronic File Formats","Disk Image Formats","File formats with extension .img","FormatInfo without mimetypes"],"wgBreakFrames":false,"wgPageContentLanguage":"en","wgSeparatorTransformTable":["",""],"wgDigitTransformTable":["",""],"wgRelevantPageName":"IMG","wgRestrictionEdit":[],"wgRestrictionMove":[]});
}</script><script>if(window.mw){
mw.loader.implement("user.options",function($){mw.user.options.set({"ccmeonemails":0,"cols":80,"date":"default","diffonly":0,"disablemail":0,"disablesuggest":0,"editfont":"default","editondblclick":0,"editsection":1,"editsectiononrightclick":0,"enotifminoredits":0,"enotifrevealaddr":0,"enotifusertalkpages":1,"enotifwatchlistpages":0,"extendwatchlist":0,"externaldiff":0,"externaleditor":0,"fancysig":0,"forceeditsummary":0,"gender":"unknown","hideminor":0,"hidepatrolled":0,"highlightbroken":1,"imagesize":2,"justify":0,"math":1,"minordefault":0,"newpageshidepatrolled":0,"nocache":0,"noconvertlink":0,"norollbackdiff":0,"numberheadings":0,"previewonfirst":0,"previewontop":1,"quickbar":5,"rcdays":7,"rclimit":50,"rememberpassword":0,"rows":25,"searchlimit":20,"showhiddencats":0,"showjumplinks":1,"shownumberswatching":1,"showtoc":1,"showtoolbar":1,"skin":"vector","stubthreshold":0,"thumbsize":2,"underline":2,"uselivepreview":0,"usenewrc":0,"watchcreations":0,"watchdefault":0,"watchdeletion":0,
"watchlistdays":3,"watchlisthideanons":0,"watchlisthidebots":0,"watchlisthideliu":0,"watchlisthideminor":0,"watchlisthideown":0,"watchlisthidepatrolled":0,"watchmoves":0,"wllimit":250,"variant":"en","language":"en","searchNs0":true,"searchNs1":false,"searchNs2":false,"searchNs3":false,"searchNs4":false,"searchNs5":false,"searchNs6":false,"searchNs7":false,"searchNs8":false,"searchNs9":false,"searchNs10":false,"searchNs11":false,"searchNs12":false,"searchNs13":false,"searchNs14":false,"searchNs15":false});;},{},{});mw.loader.implement("user.tokens",function($){mw.user.tokens.set({"editToken":"+\\","watchToken":false});;},{},{});
/* cache key: justsolve:resourceloader:filter:minify-js:7:9983699ab6150ffa89a90653b2338ac8 */
}</script>
<script>if(window.mw){
mw.loader.load(["mediawiki.page.startup","mediawiki.legacy.wikibits","mediawiki.legacy.ajax"]);
}</script>
<!--[if lt IE 7]><style type="text/css">body{behavior:url("/skins/vector/csshover.min.htc")}</style><![endif]--></head>
<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-IMG skin-vector action-view">
<div id="mw-page-base" class="noprint"></div>
<div id="mw-head-base" class="noprint"></div>
<!-- content -->
<div id="content" class="mw-body">
<a id="top"></a>
<div id="mw-js-message" style="display:none;"></div>
<!-- firstHeading -->
<h1 id="firstHeading" class="firstHeading">
<span dir="auto">IMG</span>
</h1>
<!-- /firstHeading -->
<!-- bodyContent -->
<div id="bodyContent">
<!-- tagline -->
<div id="siteSub">From Just Solve the File Format Problem</div>
<!-- /tagline -->
<!-- subtitle -->
<div id="contentSub"></div>
<!-- /subtitle -->
<!-- jumpto -->
<div id="jump-to-nav" class="mw-jump">
Jump to: <a href="#mw-head">navigation</a>,
<a href="#p-search">search</a>
</div>
<!-- /jumpto -->
<!-- bodycontent -->
<div id="mw-content-text" lang="en" dir="ltr" class="mw-content-ltr"><table class="infobox formatinfo" border="0" style="float: right; border: 1px solid #666666; max-width: 25%; overflow: hidden; background-color: #F8E0F7; padding: 0.25em; margin: 0.25em 1em;">
<tr>
<th colspan="2"><a href="/wiki/File_Formats" title="File Formats">File Format</a></th>
</tr>
<tr>
<th>Name</th>
<td>IMG</td>
</tr>
<tr>
<th> Ontology
</th>
<td>
<ul><li>
<a href="/wiki/Electronic_File_Formats" title="Electronic File Formats">Electronic File Formats</a>
<ul><li>
<a href="/wiki/Disk_Image_Formats" title="Disk Image Formats">Disk Image Formats</a>
<ul><li>
<strong class="selflink">IMG</strong>
</li></ul>
</li></ul>
</li></ul>
</td>
</tr>
<tr>
<th>Extension(s)</th>
<td><code>.img</code></td>
</tr>
</table>
<h2> <span class="mw-headline" id="Overview">Overview</span></h2>
<p><b>IMG</b> is an RLE-compressed sector-based disk image format probably used by the DOS program HD-Copy and/or others. It should not be confused with raw image files (sector dumps).
</p><p>There is a Pascal program floating around the internet which includes source code and can convert these IMG files to raw sector dumps. It is called <b>DOSIMG</b> and can be found mainly on various Chinese websites<sup id="cite_ref-0" class="reference"><a href="#cite_note-0">[1]</a></sup><sup id="cite_ref-1" class="reference"><a href="#cite_note-1">[2]</a></sup>
</p>
<h2> <span class="mw-headline" id="Format_description">Format description</span></h2>
<table>
<tr>
<th style="text-align: left;">byte
</th>
<th style="text-align: left;">description
</th></tr>
<tr>
<td>0
</td>
<td>last track on the original disk (either 39 or 79)
</td></tr>
<tr>
<td>1
</td>
<td>number of sectors per track
</td></tr>
<tr>
<td>2-166
</td>
<td>one byte for each track, 0x01 if the track is included in the file, 0x00 otherwise (empty/unformatted)
</td></tr>
<tr>
<td colspan="2">For each track:
</td></tr>
<tr>
<td>2 bytes
</td>
<td>compressed size of this track, <a href="/wiki/Endianness" title="Endianness">little-endian</a>, not including this size field but including the next byte
</td></tr>
<tr>
<td>1 byte
</td>
<td>the escape-byte for the RLE coding
</td></tr>
<tr>
<td>n-1 bytes
</td>
<td>The actual sector data, RLE compressed. Should uncompress to at most num_sectors * 512 bytes, rest is filled with zero.
<p>Each byte is copied 1:1 to the output buffer, except when the escape-byte is encountered. Then, the next 2 bytes specify a byte-value and a count-value. To uncompress, copy the first byte after the escape-byte as many times as the second byte implies to the output buffer.
</p>
</td></tr></table>
<h2> <span class="mw-headline" id="References">References</span></h2>
<ol class="references"><li id="cite_note-0"><a href="#cite_ref-0">↑</a> <span class="reference-text"><a rel="nofollow" class="external free" href="http://download.pchome.net/system/disk/down-13054-1.html">http://download.pchome.net/system/disk/down-13054-1.html</a></span>
</li>
<li id="cite_note-1"><a href="#cite_ref-1">↑</a> <span class="reference-text"><a rel="nofollow" class="external free" href="http://roy.orz.hm/soft/DOSIMG.zip">http://roy.orz.hm/soft/DOSIMG.zip</a></span>
</li></ol>
<!--
NewPP limit report
Preprocessor node count: 152/1000000
Post-expand include size: 1503/2097152 bytes
Template argument size: 582/2097152 bytes
Expensive parser function count: 0/100
-->
<!-- Saved in parser cache with key justsolve:pcache:idhash:4456-0!*!0!!*!*!* and timestamp 20150325021358 -->
</div> <!-- /bodycontent -->
<!-- printfooter -->
<div class="printfooter">
Retrieved from "<a href="http://fileformats.archiveteam.org/index.php?title=IMG&amp;oldid=16715">http://fileformats.archiveteam.org/index.php?title=IMG&amp;oldid=16715</a>" </div>
<!-- /printfooter -->
<!-- catlinks -->
<div id='catlinks' class='catlinks'><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Special:Categories" title="Special:Categories">Categories</a>: <ul><li><a href="/wiki/Category:File_Formats" title="Category:File Formats">File Formats</a></li><li><a href="/wiki/Category:Electronic_File_Formats" title="Category:Electronic File Formats">Electronic File Formats</a></li><li><a href="/wiki/Category:Disk_Image_Formats" title="Category:Disk Image Formats">Disk Image Formats</a></li><li><a href="/wiki/Category:File_formats_with_extension_.img" title="Category:File formats with extension .img">File formats with extension .img</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Hidden category: <ul><li><a href="/wiki/Category:FormatInfo_without_mimetypes" title="Category:FormatInfo without mimetypes">FormatInfo without mimetypes</a></li></ul></div></div> <!-- /catlinks -->
<div class="visualClear"></div>
<!-- debughtml -->
<!-- /debughtml -->
</div>
<!-- /bodyContent -->
</div>
<!-- /content -->
<!-- header -->
<div id="mw-head" class="noprint">
<!-- 0 -->
<div id="p-personal" class="">
<h5>Personal tools</h5>
<ul>
<li id="pt-login"><a href="/index.php?title=Special:UserLogin&amp;returnto=IMG" title="You are encouraged to log in; however, it is not mandatory [o]" accesskey="o">Log in / create account</a></li>
</ul>
</div>
<!-- /0 -->
<div id="left-navigation">
<!-- 0 -->
<div id="p-namespaces" class="vectorTabs">
<h5>Namespaces</h5>
<ul>
<li id="ca-nstab-main" class="selected"><span><a href="/wiki/IMG" title="View the content page [c]" accesskey="c">Page</a></span></li>
<li id="ca-talk" class="new"><span><a href="/index.php?title=Talk:IMG&amp;action=edit&amp;redlink=1" title="Discussion about the content page [t]" accesskey="t">Discussion</a></span></li>
</ul>
</div>
<!-- /0 -->
<!-- 1 -->
<div id="p-variants" class="vectorMenu emptyPortlet">
<h4>
</h4>
<h5><span>Variants</span><a href="#"></a></h5>
<div class="menu">
<ul>
</ul>
</div>
</div>
<!-- /1 -->
</div>
<div id="right-navigation">
<!-- 0 -->
<div id="p-views" class="vectorTabs">
<h5>Views</h5>
<ul>
<li id="ca-view" class="selected"><span><a href="/wiki/IMG" >Read</a></span></li>
<li id="ca-viewsource"><span><a href="/index.php?title=IMG&amp;action=edit" title="This page is protected.&#10;You can view its source [e]" accesskey="e">View source</a></span></li>
<li id="ca-history" class="collapsible"><span><a href="/index.php?title=IMG&amp;action=history" title="Past revisions of this page [h]" accesskey="h">View history</a></span></li>
</ul>
</div>
<!-- /0 -->
<!-- 1 -->
<div id="p-cactions" class="vectorMenu emptyPortlet">
<h5><span>Actions</span><a href="#"></a></h5>
<div class="menu">
<ul>
</ul>
</div>
</div>
<!-- /1 -->
<!-- 2 -->
<div id="p-search">
<h5><label for="searchInput">Search</label></h5>
<form action="/index.php" id="searchform">
<div>
<input type="search" name="search" title="Search Just Solve the File Format Problem [f]" accesskey="f" id="searchInput" /> <input type="submit" name="go" value="Go" title="Go to a page with this exact name if exists" id="searchGoButton" class="searchButton" /> <input type="submit" name="fulltext" value="Search" title="Search the pages for this text" id="mw-searchButton" class="searchButton" /> <input type='hidden' name="title" value="Special:Search"/>
</div>
</form>
</div>
<!-- /2 -->
</div>
</div>
<!-- /header -->
<!-- panel -->
<div id="mw-panel" class="noprint">
<!-- logo -->
<div id="p-logo"><a style="background-image: url(/thumbsup.png);" href="/wiki/Main_Page" title="Visit the main page"></a></div>
<!-- /logo -->
<!-- navigation -->
<div class="portal" id='p-navigation'>
<h5>Navigation</h5>
<div class="body">
<ul>
<li id="n-mainpage-description"><a href="/wiki/Main_Page" title="Visit the main page [z]" accesskey="z">Main page</a></li>
<li id="n-File-formats"><a href="/wiki/File_Formats">File formats</a></li>
<li id="n-Formats-by-extension"><a href="/wiki/Category:File_formats_by_extension">Formats by extension</a></li>
<li id="n-Still-more-extensions"><a href="/wiki/Category:File_Format_Extension">Still more extensions</a></li>
<li id="n-Software"><a href="/wiki/Software">Software</a></li>
<li id="n-Glossary"><a href="/wiki/Glossary">Glossary</a></li>
<li id="n-Library"><a href="/wiki/Library">Library</a></li>
<li id="n-Sources"><a href="/wiki/Sources">Sources</a></li>
<li id="n-Categories"><a href="/wiki/Category:Top_Level_Categories">Categories</a></li>
<li id="n-portal"><a href="/wiki/Just_Solve_the_File_Format_Problem:Community_portal" title="About the project, what you can do, where to find things">Community portal</a></li>
<li id="n-recentchanges"><a href="/wiki/Special:RecentChanges" title="A list of recent changes in the wiki [r]" accesskey="r">Recent changes</a></li>
<li id="n-randompage"><a href="/wiki/Special:Random" title="Load a random page [x]" accesskey="x">Random page</a></li>
</ul>
</div>
</div>
<!-- /navigation -->
<!-- SEARCH -->
<!-- /SEARCH -->
<!-- TOOLBOX -->
<div class="portal" id='p-tb'>
<h5>Toolbox</h5>
<div class="body">
<ul>
<li id="t-whatlinkshere"><a href="/wiki/Special:WhatLinksHere/IMG" title="A list of all wiki pages that link here [j]" accesskey="j">What links here</a></li>
<li id="t-recentchangeslinked"><a href="/wiki/Special:RecentChangesLinked/IMG" title="Recent changes in pages linked from this page [k]" accesskey="k">Related changes</a></li>
<li id="t-specialpages"><a href="/wiki/Special:SpecialPages" title="A list of all special pages [q]" accesskey="q">Special pages</a></li>
<li><a href="/index.php?title=IMG&amp;printable=yes" rel="alternate">Printable version</a></li>
<li id="t-permalink"><a href="/index.php?title=IMG&amp;oldid=16715" title="Permanent link to this revision of the page">Permanent link</a></li>
</ul>
</div>
</div>
<!-- /TOOLBOX -->
<!-- LANGUAGES -->
<!-- /LANGUAGES -->
</div>
<!-- /panel -->
<!-- footer -->
<div id="footer">
<ul id="footer-info">
<li id="footer-info-lastmod"> This page was last modified on 24 March 2014, at 00:48.</li>
<li id="footer-info-viewcount">This page has been accessed 375 times.</li>
<li id="footer-info-copyright">Content is available under <a class="external" href="http://creativecommons.org/publicdomain/zero/1.0/">Creative Commons 0</a>.</li>
</ul>
<ul id="footer-places">
<li id="footer-places-privacy"><a href="/wiki/Just_Solve_the_File_Format_Problem:Privacy_policy" title="Just Solve the File Format Problem:Privacy policy">Privacy policy</a></li>
<li id="footer-places-about"><a href="/wiki/Just_Solve_the_File_Format_Problem:About" title="Just Solve the File Format Problem:About">About Just Solve the File Format Problem</a></li>
<li id="footer-places-disclaimer"><a href="/wiki/Just_Solve_the_File_Format_Problem:General_disclaimer" title="Just Solve the File Format Problem:General disclaimer">Disclaimers</a></li>
</ul>
<ul id="footer-icons" class="noprint">
<li id="footer-copyrightico">
<a href="http://creativecommons.org/publicdomain/zero/1.0/"><img src="http://www.mediawiki.org/w/skins/common/images/cc-0.png" alt="Creative Commons 0" width="88" height="31" /></a>
</li>
<li id="footer-poweredbyico">
<a href="//www.mediawiki.org/"><img src="/skins/common/images/poweredby_mediawiki_88x31.png" alt="Powered by MediaWiki" width="88" height="31" /></a>
</li>
</ul>
<div style="clear:both"></div>
</div>
<!-- /footer -->
<script src="http://fileformats.archiveteam.org/load.php?debug=false&amp;lang=en&amp;modules=skins.vector&amp;only=scripts&amp;skin=vector&amp;*"></script>
<script>if(window.mw){
mw.loader.load(["mediawiki.user","mediawiki.page.ready"], null, true);
}</script>
<!-- Served in 0.066 secs. -->
</body>
</html>
Reference in New Issue View Git Blame Copy Permalink