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<ul id="toc-History_and_design-sublist" class="vector-toc-list"> <li id="toc-Am386DX_data" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Am386DX_data"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.1</span> <span>Am386DX data</span> </div> </a> <ul id="toc-Am386DX_data-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Am386DE_data" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Am386DE_data"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.2</span> <span>Am386DE data</span> </div> </a> <ul id="toc-Am386DE_data-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-AM386_SX" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#AM386_SX"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>AM386 SX</span> </div> </a> <button aria-controls="toc-AM386_SX-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle AM386 SX subsection</span> </button> <ul id="toc-AM386_SX-sublist" class="vector-toc-list"> <li id="toc-Am386SX_data" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Am386SX_data"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.1</span> <span>Am386SX data</span> </div> </a> <ul id="toc-Am386SX_data-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Am386SE_data" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Am386SE_data"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.2</span> <span>Am386SE data</span> </div> </a> <ul id="toc-Am386SE_data-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Embedded_Am386_processors" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Embedded_Am386_processors"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Embedded Am386 processors</span> </div> </a> <ul id="toc-Embedded_Am386_processors-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-80387_coprocessor" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#80387_coprocessor"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>80387 coprocessor</span> </div> </a> <ul id="toc-80387_coprocessor-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-References" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#References"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>References</span> </div> </a> <ul id="toc-References-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-External_links" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#External_links"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>External links</span> </div> </a> <ul id="toc-External_links-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Contents" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" title="Table of Contents" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Toggle the table of contents" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button 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Available in 21 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-21" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">21 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/Am386" title="Am386 – Belarusian" lang="be" hreflang="be" data-title="Am386" data-language-autonym="Беларуская" data-language-local-name="Belarusian" class="interlanguage-link-target"><span>Беларуская</span></a></li><li class="interlanguage-link interwiki-be-x-old mw-list-item"><a href="https://be-tarask.wikipedia.org/wiki/Am386" title="Am386 – Belarusian (Taraškievica orthography)" lang="be-tarask" hreflang="be-tarask" data-title="Am386" data-language-autonym="Беларуская (тарашкевіца)" data-language-local-name="Belarusian (Taraškievica orthography)" class="interlanguage-link-target"><span>Беларуская (тарашкевіца)</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/AMD_Am386" title="AMD Am386 – Catalan" lang="ca" hreflang="ca" data-title="AMD Am386" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/AMD_Am386" title="AMD Am386 – Czech" lang="cs" hreflang="cs" data-title="AMD Am386" data-language-autonym="Čeština" data-language-local-name="Czech" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/AMD_Am386" title="AMD Am386 – German" lang="de" hreflang="de" data-title="AMD Am386" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/AMD_Am386" title="AMD Am386 – Spanish" lang="es" hreflang="es" data-title="AMD Am386" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Am386" title="Am386 – French" lang="fr" hreflang="fr" data-title="Am386" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/Am386" title="Am386 – Korean" lang="ko" hreflang="ko" data-title="Am386" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Am386" title="Am386 – Italian" lang="it" hreflang="it" data-title="Am386" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Am386" title="Am386 – Hungarian" lang="hu" hreflang="hu" data-title="Am386" data-language-autonym="Magyar" data-language-local-name="Hungarian" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/Am386" title="Am386 – Japanese" lang="ja" hreflang="ja" data-title="Am386" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/AMD_Am386" title="AMD Am386 – Polish" lang="pl" hreflang="pl" data-title="AMD Am386" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Am386" title="Am386 – Portuguese" lang="pt" hreflang="pt" data-title="Am386" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/Am386" title="Am386 – Russian" lang="ru" hreflang="ru" data-title="Am386" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Am386" title="Am386 – Slovak" lang="sk" hreflang="sk" data-title="Am386" data-language-autonym="Slovenčina" data-language-local-name="Slovak" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/AMD_Am386" title="AMD Am386 – Slovenian" lang="sl" hreflang="sl" data-title="AMD Am386" data-language-autonym="Slovenščina" data-language-local-name="Slovenian" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Am386" title="Am386 – Serbo-Croatian" lang="sh" hreflang="sh" data-title="Am386" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="Serbo-Croatian" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/AMD_Am386" title="AMD Am386 – Finnish" lang="fi" hreflang="fi" data-title="AMD Am386" data-language-autonym="Suomi" data-language-local-name="Finnish" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/AMD_Am386" title="AMD Am386 – Ukrainian" lang="uk" hreflang="uk" data-title="AMD Am386" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Am386" title="Am386 – Vietnamese" lang="vi" hreflang="vi" data-title="Am386" data-language-autonym="Tiếng Việt" data-language-local-name="Vietnamese" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a 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<div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">AMD microprocessor clone</div> <style data-mw-deduplicate="TemplateStyles:r1257001546">.mw-parser-output .infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}@media screen{html.skin-theme-clientpref-night .mw-parser-output .infobox-full-data:not(.notheme)>div:not(.notheme)[style]{background:#1f1f23!important;color:#f8f9fa}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox-full-data:not(.notheme) div:not(.notheme){background:#1f1f23!important;color:#f8f9fa}}@media(min-width:640px){body.skin--responsive .mw-parser-output .infobox-table{display:table!important}body.skin--responsive .mw-parser-output .infobox-table>caption{display:table-caption!important}body.skin--responsive .mw-parser-output .infobox-table>tbody{display:table-row-group}body.skin--responsive .mw-parser-output .infobox-table tr{display:table-row!important}body.skin--responsive .mw-parser-output .infobox-table th,body.skin--responsive .mw-parser-output .infobox-table td{padding-left:inherit;padding-right:inherit}}</style><table class="infobox"><caption class="infobox-title">Am386</caption><tbody><tr><td colspan="2" class="infobox-image"><span typeof="mw:File"><a href="/wiki/File:Am386DX-40.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/74/Am386DX-40.jpg/250px-Am386DX-40.jpg" decoding="async" width="200" height="162" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/74/Am386DX-40.jpg/330px-Am386DX-40.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/74/Am386DX-40.jpg/500px-Am386DX-40.jpg 2x" data-file-width="1182" data-file-height="957" /></a></span><div class="infobox-caption">An AMD 80386DX-40 in a 132-pin <a href="/wiki/Plastic_quad_flat_package" class="mw-redirect" title="Plastic quad flat package">PQFP</a>, soldered onboard</div></td></tr><tr><th colspan="2" class="infobox-header">General information</th></tr><tr><th scope="row" class="infobox-label">Launched</th><td class="infobox-data">1991</td></tr><tr><th scope="row" class="infobox-label">Marketed by</th><td class="infobox-data"><a href="/wiki/AMD" title="AMD">AMD</a></td></tr><tr><th scope="row" class="infobox-label">Designed by</th><td class="infobox-data">AMD</td></tr><tr><th scope="row" class="infobox-label">Common manufacturer</th><td class="infobox-data"><style data-mw-deduplicate="TemplateStyles:r1126788409">.mw-parser-output .plainlist ol,.mw-parser-output .plainlist ul{line-height:inherit;list-style:none;margin:0;padding:0}.mw-parser-output .plainlist ol li,.mw-parser-output .plainlist ul li{margin-bottom:0}</style><div class="plainlist"><ul><li>AMD</li></ul></div></td></tr><tr><th scope="row" class="infobox-label">Product code</th><td class="infobox-data">23936</td></tr><tr><th colspan="2" class="infobox-header">Performance</th></tr><tr><th scope="row" class="infobox-label">Max. <a href="/wiki/Central_processing_unit" title="Central processing unit">CPU</a> <a href="/wiki/Clock_rate" title="Clock rate">clock rate</a></th><td class="infobox-data">20 MHz to 40 MHz</td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Front-side_bus" title="Front-side bus">FSB</a> speeds</th><td class="infobox-data">20 MHz to 40 MHz</td></tr><tr><th colspan="2" class="infobox-header">Cache</th></tr><tr><th scope="row" class="infobox-label">L1 <a href="/wiki/CPU_cache" title="CPU cache">cache</a></th><td class="infobox-data">Motherboard dependent</td></tr><tr><th scope="row" class="infobox-label">L2 cache</th><td class="infobox-data">none</td></tr><tr><th colspan="2" class="infobox-header">Architecture and classification</th></tr><tr><th scope="row" class="infobox-label">Application</th><td class="infobox-data">Desktop, Embedded (DE/SE-Models)</td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Technology_node" class="mw-redirect" title="Technology node">Technology node</a></th><td class="infobox-data">1.5 μm to 0.8 μm</td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Microarchitecture" title="Microarchitecture">Microarchitecture</a></th><td class="infobox-data"><a href="/wiki/80386" class="mw-redirect" title="80386">80386</a></td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Instruction_set_architecture" title="Instruction set architecture">Instruction set</a></th><td class="infobox-data"><a href="/wiki/X86" title="X86">x86</a> (<a href="/wiki/IA-32" title="IA-32">IA-32</a>)</td></tr><tr><th colspan="2" class="infobox-header">Physical specifications</th></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Multi-core_processor" title="Multi-core processor">Cores</a></th><td class="infobox-data"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409" /><div class="plainlist"><ul><li>1</li></ul></div></td></tr><tr><th scope="row" class="infobox-label">Packages</th><td class="infobox-data"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409" /><div class="plainlist"><ul><li><b>DX variant</b>:<br /> 132-pin <a href="/wiki/Pin_grid_array" title="Pin grid array">PGA</a></li><li>132-pin PQFP</li><li><b>SX variant</b>:<br /> 88-pin PGA</li><li>100-pin PQFP</li><li><b>DE variant</b>:<br /> 132-pin <a href="/wiki/Pin_grid_array" title="Pin grid array">PGA</a><br /> 132-pin PQFP</li></ul></div></td></tr><tr><th colspan="2" class="infobox-header">History</th></tr><tr><th scope="row" class="infobox-label">Predecessor</th><td class="infobox-data"><a href="/wiki/Am286" class="mw-redirect" title="Am286">Am286</a></td></tr><tr><th scope="row" class="infobox-label">Successor</th><td class="infobox-data"><a href="/wiki/Am486" title="Am486">Am486</a></td></tr></tbody></table> <p>The <b>Am386</b> <a href="/wiki/Central_processing_unit" title="Central processing unit">CPU</a> is a <a href="/wiki/IBM_PC_compatible" title="IBM PC compatible">100%-compatible clone</a> of the <a href="/wiki/I386" title="I386">Intel 80386</a> design released by <a href="/wiki/AMD" title="AMD">AMD</a> in March 1991. It sold millions of units, positioning AMD as a legitimate competitor to <a href="/wiki/Intel" title="Intel">Intel</a>, rather than being merely a second source for <i><a href="/wiki/X86" title="X86">x86</a></i> CPUs (then termed <i><a href="/wiki/Intel_8086" title="Intel 8086">8086-family</a></i>).<sup id="cite_ref-cpu-collection_1-0" class="reference"><a href="#cite_note-cpu-collection-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="History_and_design">History and design</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Am386&action=edit&section=1" title="Edit section: History and design"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Amd_386_processor.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/5/54/Amd_386_processor.jpg/220px-Amd_386_processor.jpg" decoding="async" width="220" height="147" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/54/Amd_386_processor.jpg/330px-Amd_386_processor.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/54/Amd_386_processor.jpg/440px-Amd_386_processor.jpg 2x" data-file-width="3528" data-file-height="2355" /></a><figcaption>Wafer of an Am386 processor with Intel copyright notice</figcaption></figure> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:AMD_80386DX_die.JPG" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/49/AMD_80386DX_die.JPG/220px-AMD_80386DX_die.JPG" decoding="async" width="220" height="192" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/49/AMD_80386DX_die.JPG/330px-AMD_80386DX_die.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/49/AMD_80386DX_die.JPG/440px-AMD_80386DX_die.JPG 2x" data-file-width="3750" data-file-height="3268" /></a><figcaption><a href="/wiki/Die_(integrated_circuit)" title="Die (integrated circuit)">Die</a> of AMD Am386DX</figcaption></figure> <p>While the AM386 CPU was essentially ready to be released prior to 1991, Intel kept it tied up in court.<sup id="cite_ref-CPU-World_2-0" class="reference"><a href="#cite_note-CPU-World-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> Intel learned of the Am386 when both companies hired employees with the same name who coincidentally stayed at the same hotel, which accidentally forwarded a package for AMD to Intel's employee.<sup id="cite_ref-LA_Times_3-0" class="reference"><a href="#cite_note-LA_Times-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> AMD had previously been a second-source manufacturer of Intel's <a href="/wiki/Intel_8086" title="Intel 8086">Intel 8086</a>, <a href="/wiki/Intel_80186" title="Intel 80186">Intel 80186</a> and <a href="/wiki/Intel_80286" title="Intel 80286">Intel 80286</a> designs, and AMD's interpretation of the contract, made up in 1982, was that it covered all derivatives of them. Intel, however, claimed that the contract only covered the 80286 and prior processors and forbade AMD the right to manufacture 80386 CPUs in 1987. After a few years in the courtrooms, AMD finally won the case and the right to sell their Am386 in March 1991.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> This also paved the way for competition in the <a href="/wiki/I386" title="I386">80386</a>-compatible <a href="/wiki/32-bit" class="mw-redirect" title="32-bit">32-bit</a> CPU market and so lowered the cost of owning a PC.<sup id="cite_ref-cpu-collection_1-1" class="reference"><a href="#cite_note-cpu-collection-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p><p>While Intel's 386 CPUs had topped out at 33 <a href="/wiki/Hertz" title="Hertz">MHz</a> in 1989, AMD introduced 40 MHz versions of both its 386DX and 386SX out of the gate, extending the lifespan of the architecture. In the following two years the AMD 386DX-40 saw popularity with small manufacturers of PC clones and with budget-minded computer enthusiasts because it offered near-<a href="/wiki/80486" class="mw-redirect" title="80486">80486</a> performance at a much lower price than an actual 486.<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> Generally the 386DX-40 performs nearly on par with a 25 MHz 486 due to the 486 needing fewer clock cycles per instruction, thanks to its tighter <a href="/wiki/Instruction_pipelining" title="Instruction pipelining">pipelining</a> (more overlapping of internal processing) in combination with an on-chip <a href="/wiki/CPU_cache" title="CPU cache">CPU cache</a>. However, its <a href="/wiki/32-bit" class="mw-redirect" title="32-bit">32-bit</a> 40 MHz <a href="/wiki/Bus_(computing)" title="Bus (computing)">data bus</a> gave the 386DX-40 comparatively good memory and I/O performance.<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> </p> <ul class="gallery mw-gallery-traditional"> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:KL_AMD_386DX.jpg" class="mw-file-description" title="An Am386DX-25"><img alt="An Am386DX-25" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/80/KL_AMD_386DX.jpg/120px-KL_AMD_386DX.jpg" decoding="async" width="120" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/80/KL_AMD_386DX.jpg/180px-KL_AMD_386DX.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/80/KL_AMD_386DX.jpg/240px-KL_AMD_386DX.jpg 2x" data-file-width="1212" data-file-height="1209" /></a></span></div> <div class="gallerytext">An Am386DX-25</div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:KL_AMD_Am386DE.jpg" class="mw-file-description" title="The Am386DE-33 is an embedded version of the Am386DX-33."><img alt="The Am386DE-33 is an embedded version of the Am386DX-33." src="//upload.wikimedia.org/wikipedia/commons/thumb/6/65/KL_AMD_Am386DE.jpg/120px-KL_AMD_Am386DE.jpg" decoding="async" width="120" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/65/KL_AMD_Am386DE.jpg/180px-KL_AMD_Am386DE.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/65/KL_AMD_Am386DE.jpg/240px-KL_AMD_Am386DE.jpg 2x" data-file-width="1185" data-file-height="1185" /></a></span></div> <div class="gallerytext">The Am386DE-33 is an embedded version of the Am386DX-33.</div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:AMD_Am386DX_DXL.jpg" class="mw-file-description" title="A PGA Am386DX-40"><img alt="A PGA Am386DX-40" src="//upload.wikimedia.org/wikipedia/commons/thumb/5/54/AMD_Am386DX_DXL.jpg/120px-AMD_Am386DX_DXL.jpg" decoding="async" width="120" height="119" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/54/AMD_Am386DX_DXL.jpg/180px-AMD_Am386DX_DXL.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/54/AMD_Am386DX_DXL.jpg/240px-AMD_Am386DX_DXL.jpg 2x" data-file-width="1053" data-file-height="1041" /></a></span></div> <div class="gallerytext">A PGA Am386DX-40</div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:AMD_Am386_DX-40_2007_03_27.jpg" class="mw-file-description" title="A PQFP Am386DX-40 on a 132-pin PGA adapter"><img alt="A PQFP Am386DX-40 on a 132-pin PGA adapter" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/82/AMD_Am386_DX-40_2007_03_27.jpg/120px-AMD_Am386_DX-40_2007_03_27.jpg" decoding="async" width="120" height="80" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/82/AMD_Am386_DX-40_2007_03_27.jpg/180px-AMD_Am386_DX-40_2007_03_27.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/82/AMD_Am386_DX-40_2007_03_27.jpg/240px-AMD_Am386_DX-40_2007_03_27.jpg 2x" data-file-width="1980" data-file-height="1320" /></a></span></div> <div class="gallerytext">A PQFP Am386DX-40 on a 132-pin PGA adapter</div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:AMD_Am386DE_Block_Diagram.tif" class="mw-file-description" title="AMD Am386DE block diagram. There is not a Paging Unit like a DX CPU."><img alt="AMD Am386DE block diagram. There is not a Paging Unit like a DX CPU." src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f1/AMD_Am386DE_Block_Diagram.tif/lossy-page1-119px-AMD_Am386DE_Block_Diagram.tif.jpg" decoding="async" width="119" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f1/AMD_Am386DE_Block_Diagram.tif/lossy-page1-179px-AMD_Am386DE_Block_Diagram.tif.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f1/AMD_Am386DE_Block_Diagram.tif/lossy-page1-239px-AMD_Am386DE_Block_Diagram.tif.jpg 2x" data-file-width="1738" data-file-height="1746" /></a></span></div> <div class="gallerytext">AMD Am386DE block diagram. There is not a Paging Unit like a DX CPU.</div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:Early_Nineties_386DX-40.png" class="mw-file-description" title="A scan of an AMD Am386™DX-40 mounted on a PGA adapter"><img alt="A scan of an AMD Am386™DX-40 mounted on a PGA adapter" src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b3/Early_Nineties_386DX-40.png/120px-Early_Nineties_386DX-40.png" decoding="async" width="120" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b3/Early_Nineties_386DX-40.png/180px-Early_Nineties_386DX-40.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b3/Early_Nineties_386DX-40.png/240px-Early_Nineties_386DX-40.png 2x" data-file-width="554" data-file-height="554" /></a></span></div> <div class="gallerytext">A scan of an AMD Am386™DX-40 mounted on a PGA adapter</div> </li> </ul> <div class="mw-heading mw-heading3"><h3 id="Am386DX_data">Am386DX data</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Am386&action=edit&section=2" title="Edit section: Am386DX data"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li>32-bit data bus, can select between either a 32-bit bus or a 16-bit bus by use of the BS16 input</li> <li>32-bit physical address space, 4 Gbyte physical memory address space</li> <li>fetches code in four-byte units</li> <li>released in March 1991 (October 1991 for DXLV/SXLV variants with <a href="/wiki/System_Management_Mode" title="System Management Mode">SMM</a><sup id="cite_ref-wharton1994_7-0" class="reference"><a href="#cite_note-wharton1994-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup>)</li></ul> <table class="wikitable"> <caption>The various models of the Am386DX, data from<sup id="cite_ref-cpu-collection_1-2" class="reference"><a href="#cite_note-cpu-collection-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-CPU-World_2-1" class="reference"><a href="#cite_note-CPU-World-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </caption> <tbody><tr> <th>Model number</th> <th>Frequency</th> <th><a href="/wiki/Front-side_bus" title="Front-side bus">FSB</a></th> <th><a href="/wiki/CPU_core_voltage" title="CPU core voltage">Voltage</a></th> <th><a href="/wiki/CPU_power_dissipation" class="mw-redirect" title="CPU power dissipation">Power</a></th> <th><a href="/wiki/CPU_socket" title="CPU socket">Socket</a> </th></tr> <tr> <td>AMD Am386DX/DXL-20</td> <td colspan="2">20 MHz</td> <td rowspan="5">5 V</td> <td>1.05 Watt</td> <td rowspan="4">132-pin <a href="/wiki/Ceramic_pin_grid_array" class="mw-redirect" title="Ceramic pin grid array">CPGA</a> </td></tr> <tr> <td>AMD Am386DX/DXL-25</td> <td colspan="2">25 MHz</td> <td>1.31 Watt </td></tr> <tr> <td>AMD Am386DX/DXL-33</td> <td colspan="2">33 MHz</td> <td>1.73 Watt </td></tr> <tr> <td>AMD Am386DX/DXL-40</td> <td colspan="2" rowspan="2">40 MHz</td> <td>2.10 Watt </td></tr> <tr> <td>AMD Am386DX-40</td> <td>3.03 Watt</td> <td>132-pin <a href="/wiki/Plastic_quad_flat_package" class="mw-redirect" title="Plastic quad flat package">PQFP</a> </td></tr> <tr> <td>AMD Am386DXLV-25</td> <td colspan="2">25 MHz</td> <td>3-5 V</td> <td>445 mW (at 3.3V)</td> <td rowspan="2">132-pin PQFP,<sup id="cite_ref-amd1992_386book_8-0" class="reference"><a href="#cite_note-amd1992_386book-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup><br />132-pin PGA<sup id="cite_ref-wharton1994_7-1" class="reference"><a href="#cite_note-wharton1994-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> </td></tr> <tr> <td>AMD Am386DXLV-33</td> <td colspan="2">33 MHz</td> <td>5 V</td> <td>1.65 Watt </td></tr></tbody></table> <div class="mw-heading mw-heading3"><h3 id="Am386DE_data">Am386DE data</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Am386&action=edit&section=3" title="Edit section: Am386DE data"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li>32-bit data bus, can select between either a 32-bit bus or a 16-bit bus by use of the BS16 input</li> <li>32-bit physical address space, 4 Gbyte physical memory address space</li> <li>fetches code in four-byte units</li> <li>no paging unit<sup id="cite_ref-mpr_386de_9-0" class="reference"><a href="#cite_note-mpr_386de-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup></li></ul> <table class="wikitable"> <caption>The various models of the Am386DE, data from<sup id="cite_ref-cpu-collection_1-3" class="reference"><a href="#cite_note-cpu-collection-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-CPU-World_2-2" class="reference"><a href="#cite_note-CPU-World-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </caption> <tbody><tr> <th>Model number</th> <th>Frequency</th> <th><a href="/wiki/Front-side_bus" title="Front-side bus">FSB</a></th> <th><a href="/wiki/CPU_core_voltage" title="CPU core voltage">Voltage</a></th> <th><a href="/wiki/CPU_power_dissipation" class="mw-redirect" title="CPU power dissipation">Power</a></th> <th><a href="/wiki/CPU_socket" title="CPU socket">Socket</a></th> <th>Release date </th></tr> <tr> <td>AMD Am386DE-25KC</td> <td colspan="2">25 MHz</td> <td>3-5 V</td> <td>0.32-1.05 Watt</td> <td rowspan="2">132-pin <a href="/wiki/Plastic_quad_flat_package" class="mw-redirect" title="Plastic quad flat package">PQFP</a></td> <td rowspan="3">1994<sup id="cite_ref-mpr_386de_9-1" class="reference"><a href="#cite_note-mpr_386de-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> </td></tr> <tr> <td>AMD Am386DE-33KC</td> <td colspan="2" rowspan="2">33 MHz</td> <td rowspan="2">5 V</td> <td rowspan="2">1.05-1.35 Watt </td></tr> <tr> <td>AMD Am386DE-33GC</td> <td>132-pin CPGA </td></tr></tbody></table> <div class="mw-heading mw-heading2"><h2 id="AM386_SX">AM386 SX</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Am386&action=edit&section=4" title="Edit section: AM386 SX"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>In 1991 AMD also introduced advanced versions of the 386SX processor – again not as a second source production of the Intel chip, but as a reverse engineered pin compatible version. In fact, it was AMD's first entry in the x86 market other than as a second source for Intel.<sup id="cite_ref-cpu-collection-SX_10-0" class="reference"><a href="#cite_note-cpu-collection-SX-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> AMD 386SX processors were available at higher clock speeds at the time they were introduced and still cheaper than the Intel 386SX. Produced in 0.8 μm technology and using a static core, their clock speed could be dropped down to 0 MHz, consuming just some mWatts. Power consumption was up to 35% lower than with Intel's design and even lower than the 386SL's, making the AMD 386SX the ideal chip for both desktop and mobile computers. The SXL versions featured advanced power management functions and used even less power.<sup id="cite_ref-cpu-collection-SX_10-1" class="reference"><a href="#cite_note-cpu-collection-SX-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> </p> <ul class="gallery mw-gallery-traditional"> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:Am386SXL-25cropped.jpg" class="mw-file-description" title="An Am386SX-25"><img alt="An Am386SX-25" src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f5/Am386SXL-25cropped.jpg/120px-Am386SXL-25cropped.jpg" decoding="async" width="120" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f5/Am386SXL-25cropped.jpg/250px-Am386SXL-25cropped.jpg 1.5x" data-file-width="1440" data-file-height="1440" /></a></span></div> <div class="gallerytext">An Am386SX-25</div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:KL_AMD_386SX.jpg" class="mw-file-description" title="An Am386SX-33"><img alt="An Am386SX-33" src="//upload.wikimedia.org/wikipedia/commons/thumb/5/55/KL_AMD_386SX.jpg/111px-KL_AMD_386SX.jpg" decoding="async" width="111" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/55/KL_AMD_386SX.jpg/166px-KL_AMD_386SX.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/55/KL_AMD_386SX.jpg/222px-KL_AMD_386SX.jpg 2x" data-file-width="690" data-file-height="747" /></a></span></div> <div class="gallerytext">An Am386SX-33</div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:Ic-photo-AMD--Am386SX-40--(NG80386SX-40)--(386-CPU).png" class="mw-file-description" title="An Am386SX-40"><img alt="An Am386SX-40" src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e3/Ic-photo-AMD--Am386SX-40--%28NG80386SX-40%29--%28386-CPU%29.png/120px-Ic-photo-AMD--Am386SX-40--%28NG80386SX-40%29--%28386-CPU%29.png" decoding="async" width="120" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e3/Ic-photo-AMD--Am386SX-40--%28NG80386SX-40%29--%28386-CPU%29.png/180px-Ic-photo-AMD--Am386SX-40--%28NG80386SX-40%29--%28386-CPU%29.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/e3/Ic-photo-AMD--Am386SX-40--%28NG80386SX-40%29--%28386-CPU%29.png/240px-Ic-photo-AMD--Am386SX-40--%28NG80386SX-40%29--%28386-CPU%29.png 2x" data-file-width="681" data-file-height="679" /></a></span></div> <div class="gallerytext">An Am386SX-40</div> </li> </ul> <div class="mw-heading mw-heading3"><h3 id="Am386SX_data">Am386SX data</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Am386&action=edit&section=5" title="Edit section: Am386SX data"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li>16-bit data bus, no bus sizing option</li> <li>24-bit physical address space, 16 Mbyte physical memory address space</li> <li>prefetch unit reads two bytes as one unit (like the <a href="/wiki/80286" class="mw-redirect" title="80286">80286</a>).</li></ul> <table class="wikitable"> <caption>The various models of the Am386SX, data from<sup id="cite_ref-CPU-World_2-3" class="reference"><a href="#cite_note-CPU-World-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-cpu-collection-SX_10-2" class="reference"><a href="#cite_note-cpu-collection-SX-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-AMD_Am386_Microprocessors_for_Personal_Computers_Datasheet_11-0" class="reference"><a href="#cite_note-AMD_Am386_Microprocessors_for_Personal_Computers_Datasheet-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> </caption> <tbody><tr> <th>Model number</th> <th>Frequency</th> <th><a href="/wiki/Front-side_bus" title="Front-side bus">FSB</a></th> <th><a href="/wiki/CPU_core_voltage" title="CPU core voltage">Voltage</a></th> <th><a href="/wiki/CPU_power_dissipation" class="mw-redirect" title="CPU power dissipation">Power</a></th> <th><a href="/wiki/CPU_socket" title="CPU socket">Socket</a></th> <th>Release date </th></tr> <tr> <td>AMD Am386SX/SXL-20</td> <td colspan="2">20 MHz</td> <td rowspan="4">5 V</td> <td>1.68/0.85 Watt</td> <td rowspan="4">100-pin <a href="/wiki/Plastic_quad_flat_package" class="mw-redirect" title="Plastic quad flat package">PQFP</a></td> <td>1991 </td></tr> <tr> <td>AMD Am386SX/SXL-25</td> <td colspan="2">25 MHz</td> <td>1.84/1.05 Watt</td> <td>29 April 1991 </td></tr> <tr> <td>AMD Am386SX/SXL-33</td> <td colspan="2">33 MHz</td> <td>1.35 Watt</td> <td>1992 </td></tr> <tr> <td>AMD Am386SX-40</td> <td colspan="2">40 MHz</td> <td>1.55 Watt</td> <td>1991 </td></tr> <tr> <td>AMD Am386SXLV-20</td> <td colspan="2">20 MHz</td> <td rowspan="2">3-5V</td> <td></td> <td rowspan="2">100-pin PQFP<sup id="cite_ref-amd1992_386book_8-1" class="reference"><a href="#cite_note-amd1992_386book-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup></td> <td rowspan="2">October 1991<sup id="cite_ref-wharton1994_7-2" class="reference"><a href="#cite_note-wharton1994-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> </td></tr> <tr> <td>AMD Am386SXLV-25</td> <td colspan="2">25 MHz</td> <td>412 mW (at 3.3V)<sup id="cite_ref-wharton1994_7-3" class="reference"><a href="#cite_note-wharton1994-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> </td></tr></tbody></table> <div class="mw-heading mw-heading3"><h3 id="Am386SE_data">Am386SE data</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Am386&action=edit&section=6" title="Edit section: Am386SE data"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li>16-bit data bus, no bus sizing option</li> <li>24-bit physical address space, 16 Mbyte physical memory address space</li> <li>prefetch unit reads two bytes as one unit (like the <a href="/wiki/80286" class="mw-redirect" title="80286">80286</a>).</li> <li>no paging unit<sup id="cite_ref-mpr_386de_9-2" class="reference"><a href="#cite_note-mpr_386de-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup></li></ul> <table class="wikitable"> <caption>The various models of the Am386SE, data from<sup id="cite_ref-am386se_datasheet_12-0" class="reference"><a href="#cite_note-am386se_datasheet-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> </caption> <tbody><tr> <th>Model number</th> <th>Frequency</th> <th><a href="/wiki/Front-side_bus" title="Front-side bus">FSB</a></th> <th><a href="/wiki/CPU_core_voltage" title="CPU core voltage">Voltage</a></th> <th><a href="/wiki/CPU_socket" title="CPU socket">Socket</a></th> <th>Release date </th></tr> <tr> <td>AMD Am386SE-25KC</td> <td colspan="2" rowspan="4">25 MHz</td> <td rowspan="4">3-5 V</td> <td rowspan="2">100-pin <a href="/wiki/Plastic_quad_flat_package" class="mw-redirect" title="Plastic quad flat package">PQFP</a></td> <td rowspan="5">1994<sup id="cite_ref-mpr_386de_9-3" class="reference"><a href="#cite_note-mpr_386de-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> </td></tr> <tr> <td>AMD Am386SE-25KI </td></tr> <tr> <td>AMD Am386SE-25VC</td> <td rowspan="2">100-pin <a href="/wiki/Thin_quad_flat_package" class="mw-redirect" title="Thin quad flat package">TQFP</a> </td></tr> <tr> <td>AMD Am386SE-25VI </td></tr> <tr> <td>AMD Am386SE-33KC</td> <td colspan="2">33 MHz</td> <td>5 V</td> <td>100-pin PQFP </td></tr></tbody></table> <div class="mw-heading mw-heading2"><h2 id="Embedded_Am386_processors">Embedded Am386 processors</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Am386&action=edit&section=7" title="Edit section: Embedded Am386 processors"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">See also: <a href="/wiki/AMD_%C3%89lan" title="AMD Élan">AMD Élan</a></div> <p>The Am386 processor core has been used in some embedded processors. In October 1993, AMD introduced the Am386SC processor, which integrated an Am386SXLV CPU core with a collection of PC/AT-compatible peripherals.<sup id="cite_ref-13" class="reference"><a href="#cite_note-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> This processor, marketed as "Élan SC300" and "Élan SC310", was the first in AMD's Élan series of SoCs. In 1994, AMD announced the Am386EM microcontroller, which integrated an Am386 CPU core with a collection of <a href="/wiki/Intel_80186" title="Intel 80186">80186</a>-compatible peripherals rather than PC/AT peripherials.<sup id="cite_ref-14" class="reference"><a href="#cite_note-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-15" class="reference"><a href="#cite_note-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup> This chip does not, however, appear to have been released,<sup id="cite_ref-16" class="reference"><a href="#cite_note-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup> although a datasheet exists.<sup id="cite_ref-17" class="reference"><a href="#cite_note-17"><span class="cite-bracket">[</span>17<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="80387_coprocessor">80387 coprocessor</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Am386&action=edit&section=8" title="Edit section: 80387 coprocessor"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><a href="/wiki/Floating_point" class="mw-redirect" title="Floating point">Floating point</a> performance of the Am386 could be boosted with the addition of a <a href="/wiki/X87#80387" title="X87">80387DX</a> or <a href="/wiki/X87#80387" title="X87">80387SX</a> <a href="/wiki/Coprocessor" title="Coprocessor">coprocessor</a>, although performance would still not approach that of the on-chip <a href="/wiki/Floating-point_unit" title="Floating-point unit">FPU</a> of the 486DX. This made the Am386DX a suboptimal choice for <a href="/wiki/Scientific" class="mw-redirect" title="Scientific">scientific</a> applications and <a href="/wiki/Computer-aided_design" title="Computer-aided design">CAD</a> using floating point intensive calculations. However, both were niche markets in the early 1990s and the chip sold well, first as a mid-range contender, and then as a budget chip. Although <a href="/wiki/Motherboard" title="Motherboard">motherboards</a> using the older 386 CPUs often had limited memory expansion possibilities and therefore struggled under <a href="/wiki/Windows_95" title="Windows 95">Windows 95</a>'s memory requirements, boards using the Am386 were sold well into the mid-1990s; at the end as budget motherboards for those who were only interested in running <a href="/wiki/MS-DOS" title="MS-DOS">MS-DOS</a> or <a href="/wiki/Windows_3.1x" class="mw-redirect" title="Windows 3.1x">Windows 3.1x</a> applications. The Am386 and its low-power successors were also popular choices for <a href="/wiki/Embedded_system" title="Embedded system">embedded systems</a>, for a much longer period than their life span as <a href="/wiki/Personal_computer" title="Personal computer">PC</a> processors. </p> <ul class="gallery mw-gallery-traditional"> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:KL_IIT_3C87SX.jpg" class="mw-file-description" title="An IIT 387SX-25 Coprocessor"><img alt="An IIT 387SX-25 Coprocessor" src="//upload.wikimedia.org/wikipedia/commons/thumb/5/56/KL_IIT_3C87SX.jpg/120px-KL_IIT_3C87SX.jpg" decoding="async" width="120" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/56/KL_IIT_3C87SX.jpg/180px-KL_IIT_3C87SX.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/56/KL_IIT_3C87SX.jpg/240px-KL_IIT_3C87SX.jpg 2x" data-file-width="906" data-file-height="906" /></a></span></div> <div class="gallerytext">An IIT 387SX-25 Coprocessor</div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:FasMath.jpg" class="mw-file-description" title="A Cyrix FasMath 387DX-33 Coprocessor"><img alt="A Cyrix FasMath 387DX-33 Coprocessor" src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f8/FasMath.jpg/120px-FasMath.jpg" decoding="async" width="120" height="118" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f8/FasMath.jpg/180px-FasMath.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f8/FasMath.jpg/240px-FasMath.jpg 2x" data-file-width="834" data-file-height="822" /></a></span></div> <div class="gallerytext">A Cyrix FasMath 387DX-33 Coprocessor</div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:KL_ULSI_US83S87SX_SLC.jpg" class="mw-file-description" title="An ULSI 387SX-40 Coprocessor"><img alt="An ULSI 387SX-40 Coprocessor" src="//upload.wikimedia.org/wikipedia/commons/thumb/3/30/KL_ULSI_US83S87SX_SLC.jpg/120px-KL_ULSI_US83S87SX_SLC.jpg" decoding="async" width="120" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/30/KL_ULSI_US83S87SX_SLC.jpg/180px-KL_ULSI_US83S87SX_SLC.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/30/KL_ULSI_US83S87SX_SLC.jpg/240px-KL_ULSI_US83S87SX_SLC.jpg 2x" data-file-width="903" data-file-height="903" /></a></span></div> <div class="gallerytext">An ULSI 387SX-40 Coprocessor</div> </li> </ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Am386&action=edit&section=9" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap mw-references-columns"><ol class="references"> <li id="cite_note-cpu-collection-1"><span class="mw-cite-backlink">^ <a href="#cite_ref-cpu-collection_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-cpu-collection_1-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-cpu-collection_1-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-cpu-collection_1-3"><sup><i><b>d</b></i></sup></a></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.cpu-collection.de/?l0=co&l1=AMD&l2=386+DX">"The AMD Am386 DX Processor"</a>. <i>cpu-collection.de</i>. 2011<span class="reference-accessdate">. Retrieved <span class="nowrap">12 November</span> 2011</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=cpu-collection.de&rft.atitle=The+AMD+Am386+DX+Processor&rft.date=2011&rft_id=http%3A%2F%2Fwww.cpu-collection.de%2F%3Fl0%3Dco%26l1%3DAMD%26l2%3D386%2BDX&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAm386" class="Z3988"></span></span> </li> <li id="cite_note-CPU-World-2"><span class="mw-cite-backlink">^ <a href="#cite_ref-CPU-World_2-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-CPU-World_2-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-CPU-World_2-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-CPU-World_2-3"><sup><i><b>d</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite id="CITEREFShvets2011" class="citation web cs1">Shvets, Gennadiy (5 November 2011). <a rel="nofollow" class="external text" href="http://www.cpu-world.com/CPUs/80386/MANUF-AMD.html">"AMD 80386 microprocessor"</a>. <i>CPU-World</i><span class="reference-accessdate">. Retrieved <span class="nowrap">29 November</span> 2011</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=CPU-World&rft.atitle=AMD+80386+microprocessor&rft.date=2011-11-05&rft.aulast=Shvets&rft.aufirst=Gennadiy&rft_id=http%3A%2F%2Fwww.cpu-world.com%2FCPUs%2F80386%2FMANUF-AMD.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAm386" class="Z3988"></span></span> </li> <li id="cite_note-LA_Times-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-LA_Times_3-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite id="CITEREFJonathan_Weber1990" class="citation news cs1">Jonathan Weber (October 5, 1990). <a rel="nofollow" class="external text" href="https://www.latimes.com/archives/la-xpm-1990-10-05-fi-1767-story.html">"AMD-Intel Battle Now Tangled in 2 'Webbs'<span class="cs1-kern-right"></span>"</a><span class="reference-accessdate">. Retrieved <span class="nowrap">December 26,</span> 2024</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.atitle=AMD-Intel+Battle+Now+Tangled+in+2+%E2%80%98Webbs%E2%80%99&rft.date=1990-10-05&rft.au=Jonathan+Weber&rft_id=https%3A%2F%2Fwww.latimes.com%2Farchives%2Fla-xpm-1990-10-05-fi-1767-story.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAm386" class="Z3988"></span></span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite id="CITEREFPollack1991" class="citation news cs1">Pollack, Andrew (2 March 1991). <a rel="nofollow" class="external text" href="https://www.nytimes.com/1991/03/02/business/intel-loses-trademark-decision.html">"Intel Loses Trademark Decision"</a>. <i>The New York Times</i>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+New+York+Times&rft.atitle=Intel+Loses+Trademark+Decision&rft.date=1991-03-02&rft.aulast=Pollack&rft.aufirst=Andrew&rft_id=https%3A%2F%2Fwww.nytimes.com%2F1991%2F03%2F02%2Fbusiness%2Fintel-loses-trademark-decision.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAm386" class="Z3988"></span></span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.redhill.net.au/c/c-4.html">"386DX-40 and competitors"</a>. <i>the red hill cpu guide</i>. 2011<span class="reference-accessdate">. Retrieved <span class="nowrap">12 November</span> 2011</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=the+red+hill+cpu+guide&rft.atitle=386DX-40+and+competitors&rft.date=2011&rft_id=http%3A%2F%2Fwww.redhill.net.au%2Fc%2Fc-4.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAm386" class="Z3988"></span></span> </li> <li id="cite_note-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-6">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite id="CITEREFLinderholmMiller1992" class="citation web cs1">Linderholm, Owen; Miller, Dan (1 December 1992). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20140101094653/http://business.highbeam.com/409748/article-1G1-13042739/486sx25s-vs-386dx40s-upstart-fights-back">"486SX-25s vs. 386DX-40s: the upstart fights back. (evaluations of 30 microcomputers based on Intel Corp.'s 80486SX-25, 80386DX-40 microprocessors) (Hardware Review) (Systems: 486SX-25 vs. 386-40) (Evaluation)"</a>. Archived from <a rel="nofollow" class="external text" href="http://business.highbeam.com/409748/article-1G1-13042739/486sx25s-vs-386dx40s-upstart-fights-back">the original</a> on 1 January 2014<span class="reference-accessdate">. Retrieved <span class="nowrap">12 November</span> 2011</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=486SX-25s+vs.+386DX-40s%3A+the+upstart+fights+back.+%28evaluations+of+30+microcomputers+based+on+Intel+Corp.%27s+80486SX-25%2C+80386DX-40+microprocessors%29+%28Hardware+Review%29+%28Systems%3A+486SX-25+vs.+386-40%29+%28Evaluation%29&rft.date=1992-12-01&rft.aulast=Linderholm&rft.aufirst=Owen&rft.au=Miller%2C+Dan&rft_id=http%3A%2F%2Fbusiness.highbeam.com%2F409748%2Farticle-1G1-13042739%2F486sx25s-vs-386dx40s-upstart-fights-back&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAm386" class="Z3988"></span></span> </li> <li id="cite_note-wharton1994-7"><span class="mw-cite-backlink">^ <a href="#cite_ref-wharton1994_7-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-wharton1994_7-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-wharton1994_7-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-wharton1994_7-3"><sup><i><b>d</b></i></sup></a></span> <span class="reference-text">John Wharton, <a rel="nofollow" class="external text" href="https://bitsavers.org/pdf/microDesign/Microdesign_-_The_Complete_X86_Volume_1_1994.pdf">The Complete x86 - The Definitive Guide to 386, 486, and Pentium-Class Microprocessors Volume I</a>, <i>MicroDesign Resources</i>, see page 195 for Am386SXLV and page 200 for Am386DXLV.</span> </li> <li id="cite_note-amd1992_386book-8"><span class="mw-cite-backlink">^ <a href="#cite_ref-amd1992_386book_8-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-amd1992_386book_8-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text">AMD, <a rel="nofollow" class="external text" href="http://www.bitsavers.org/components/amd/x86/1992_AMD_Personal_Computer_Microprocessors_Data_Book.pdf">Personal Computer Microprocessors Data Book</a>, 1992 - see pages 436-444 for information on Am386DXLV and pages 459-467 for information on Am386SXLV.</span> </li> <li id="cite_note-mpr_386de-9"><span class="mw-cite-backlink">^ <a href="#cite_ref-mpr_386de_9-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-mpr_386de_9-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-mpr_386de_9-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-mpr_386de_9-3"><sup><i><b>d</b></i></sup></a></span> <span class="reference-text">Microprocessor Report, <a rel="nofollow" class="external text" href="https://www.ardent-tool.com/CPU/docs/MPR/19940307/0803msb.pdf">Vol.8, No.3, March 7, 1994, "Most Significant Bits"</a>, pages 1-2</span> </li> <li id="cite_note-cpu-collection-SX-10"><span class="mw-cite-backlink">^ <a href="#cite_ref-cpu-collection-SX_10-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-cpu-collection-SX_10-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-cpu-collection-SX_10-2"><sup><i><b>c</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.cpu-collection.de/?tn=0&l0=co&l1=AMD&l2=386+SX">"The AMD Am386 SX Processor"</a>. <i>cpu-collection.de</i>. 2011<span class="reference-accessdate">. Retrieved <span class="nowrap">30 November</span> 2011</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=cpu-collection.de&rft.atitle=The+AMD+Am386+SX+Processor&rft.date=2011&rft_id=http%3A%2F%2Fwww.cpu-collection.de%2F%3Ftn%3D0%26l0%3Dco%26l1%3DAMD%26l2%3D386%2BSX&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAm386" class="Z3988"></span></span> </li> <li id="cite_note-AMD_Am386_Microprocessors_for_Personal_Computers_Datasheet-11"><span class="mw-cite-backlink"><b><a href="#cite_ref-AMD_Am386_Microprocessors_for_Personal_Computers_Datasheet_11-0">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external autonumber" href="http://bitsavers.informatik.uni-stuttgart.de/pdf/amd/_dataBooks/1992_AM386_Microprocessors_for_Personal_Computers.pdf">[1]</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20160304200038/http://bitsavers.informatik.uni-stuttgart.de/pdf/amd/_dataBooks/1992_AM386_Microprocessors_for_Personal_Computers.pdf">Archived</a> 2016-03-04 at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>, AMD Datasheet no 15022.</span> </li> <li id="cite_note-am386se_datasheet-12"><span class="mw-cite-backlink"><b><a href="#cite_ref-am386se_datasheet_12-0">^</a></b></span> <span class="reference-text">AMD, <a rel="nofollow" class="external text" href="https://4donline.ihs.com/images/VipMasterIC/IC/AMDI/AMDIS045/AMDIS045-1.pdf?hkey=FB3F1F3F2A09A989A6BF9D772C3B8264">Am386SE High Performance, Low-Power, 32-bit Embedded Microprocessor</a>, pub.no. 18420, rev B, June 1994, see page 7 for product list and pages 60-61 for DC characteristics. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20250125151653/https://4donline.ihs.com/images/VipMasterIC/IC/AMDI/AMDIS045/AMDIS045-1.pdf?hkey=FB3F1F3F2A09A989A6BF9D772C3B8264">Archived</a> on 25 Jan 2025.</span> </li> <li id="cite_note-13"><span class="mw-cite-backlink"><b><a href="#cite_ref-13">^</a></b></span> <span class="reference-text">Microprocessor Report, <a rel="nofollow" class="external text" href="https://www.ardent-tool.com/CPU/docs/MPR/19931025/071404.pdf">AMD’s Elan Puts 386 PC in Pocket</a> (vol 7, no. 14, October 25, 1993). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20240422074042/https://www.ardent-tool.com/CPU/docs/MPR/19931025/071404.pdf">Archived</a> on 22 Apr 2024.</span> </li> <li id="cite_note-14"><span class="mw-cite-backlink"><b><a href="#cite_ref-14">^</a></b></span> <span class="reference-text">Microprocessor Report, <a rel="nofollow" class="external text" href="https://www.ardent-tool.com/CPU/docs/MPR/19941003/0813msb.pdf">Most Significant bits</a> (vol 8, No. 13, October 3, 1994), page 3. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20240422074119/https://www.ardent-tool.com/CPU/docs/MPR/19941003/0813msb.pdf">Archived</a> on 22 Apr 2024.</span> </li> <li id="cite_note-15"><span class="mw-cite-backlink"><b><a href="#cite_ref-15">^</a></b></span> <span class="reference-text">Tech Monitor, <a rel="nofollow" class="external text" href="https://www.techmonitor.ai/technology/advanced_micro_creates_iapx_86_microcontrollers?cf-view">Advanced Micro Creates iAPX-86 Microcontrollers</a>, 26 Sep 1994. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20250126202613/https://www.techmonitor.ai/technology/advanced_micro_creates_iapx_86_microcontrollers?cf-view">Archived</a> on 26 Jan 2025.</span> </li> <li id="cite_note-16"><span class="mw-cite-backlink"><b><a href="#cite_ref-16">^</a></b></span> <span class="reference-text">R. Oestergaard, <a rel="nofollow" class="external text" href="https://groups.google.com/g/comp.arch.embedded/c/JAzuW5AWnGo/m/K0eACgbyWWsJ">What comes after 80186?</a>, 14 dec 1995, <i>comp.arch.embedded</i> newsgroup post. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20250126203447/https://groups.google.com/g/comp.arch.embedded/c/JAzuW5AWnGo/m/K0eACgbyWWsJ">Archived</a> on 26 Jan 2025.</span> </li> <li id="cite_note-17"><span class="mw-cite-backlink"><b><a href="#cite_ref-17">^</a></b></span> <span class="reference-text">AMD, <a rel="nofollow" class="external text" href="https://4donline.ihs.com/images/VipMasterIC/IC/AMDI/AMDIS045/AMDIS045-1.pdf?hkey=FB3F1F3F2A09A989A6BF9D772C3B8264g">Am386EM 386-Based 80C186/8-Compatible 32-bit Embedded Microcontroller</a>, pub.no. 19167, rev A, august 1994. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20250125151653/https://4donline.ihs.com/images/VipMasterIC/IC/AMDI/AMDIS045/AMDIS045-1.pdf?hkey=FB3F1F3F2A09A989A6BF9D772C3B8264">Archived</a> on 25 Jan 2025.</span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Am386&action=edit&section=10" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1235681985">.mw-parser-output .side-box{margin:4px 0;box-sizing:border-box;border:1px solid #aaa;font-size:88%;line-height:1.25em;background-color:var(--background-color-interactive-subtle,#f8f9fa);display:flow-root}.mw-parser-output .side-box-abovebelow,.mw-parser-output .side-box-text{padding:0.25em 0.9em}.mw-parser-output .side-box-image{padding:2px 0 2px 0.9em;text-align:center}.mw-parser-output .side-box-imageright{padding:2px 0.9em 2px 0;text-align:center}@media(min-width:500px){.mw-parser-output .side-box-flex{display:flex;align-items:center}.mw-parser-output .side-box-text{flex:1;min-width:0}}@media(min-width:720px){.mw-parser-output .side-box{width:238px}.mw-parser-output .side-box-right{clear:right;float:right;margin-left:1em}.mw-parser-output .side-box-left{margin-right:1em}}</style><style data-mw-deduplicate="TemplateStyles:r1237033735">@media print{body.ns-0 .mw-parser-output .sistersitebox{display:none!important}}@media screen{html.skin-theme-clientpref-night .mw-parser-output .sistersitebox img[src*="Wiktionary-logo-en-v2.svg"]{background-color:white}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .sistersitebox img[src*="Wiktionary-logo-en-v2.svg"]{background-color:white}}</style><div class="side-box side-box-right plainlinks sistersitebox"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409" /> <div class="side-box-flex"> <div class="side-box-image"><span class="noviewer" typeof="mw:File"><a href="/wiki/File:Commons-logo.svg" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/40px-Commons-logo.svg.png" decoding="async" width="30" height="40" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/60px-Commons-logo.svg.png 1.5x" data-file-width="1024" data-file-height="1376" /></a></span></div> <div class="side-box-text plainlist">Wikimedia Commons has media related to <span style="font-weight: bold; font-style: italic;"><a href="https://commons.wikimedia.org/wiki/Category:AMD_Am386" class="extiw" title="commons:Category:AMD Am386">AMD Am386</a></span>.</div></div> </div> <ul><li><a rel="nofollow" class="external text" href="https://www.amd.com/epd/processors/6.32bitproc/10.am386fami/">AMD.com: Am386 Family 32-bit Processors</a></li> <li><a rel="nofollow" class="external text" href="http://support.amd.com/us/Embedded_TechDocs/21020.pdf">AMD Am386SX/SXL/SXLV Datasheet</a></li> <li><a rel="nofollow" class="external text" href="http://www.cpu-collection.de/?l0=co&l1=AMD&l2=386%20DX">cpu-collection.de: Pictures</a></li> <li><a rel="nofollow" class="external text" href="http://www.digital-daily.com/editorial/amd-history/index02.htm">AMD: 30 Years of Pursuing the Leader. Part 2</a></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite id="CITEREFShvets2011" class="citation web cs1">Shvets, Gennadiy (5 November 2011). <a rel="nofollow" class="external text" href="http://www.cpu-world.com/CPUs/80386/MANUF-AMD.html">"AMD 80386 microprocessor"</a>. <i>CPU-World</i><span class="reference-accessdate">. Retrieved <span class="nowrap">29 November</span> 2011</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=CPU-World&rft.atitle=AMD+80386+microprocessor&rft.date=2011-11-05&rft.aulast=Shvets&rft.aufirst=Gennadiy&rft_id=http%3A%2F%2Fwww.cpu-world.com%2FCPUs%2F80386%2FMANUF-AMD.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAm386" class="Z3988"></span></li> <li><a rel="nofollow" class="external text" href="http://bitsavers.informatik.uni-stuttgart.de/components/amd/_dataBooks/1992_AM386_Microprocessors_for_Personal_Computers.pdf">AMD Am386 Microprocessors for Personal Computers Datasheet 15021 and 15022</a></li> <li><a rel="nofollow" class="external text" href="http://www.datasheetlib.com/datasheet/1357743/am386de-33kc_amd-advanced-micro-devices.html">AMD (Advanced Micro Devices) AM386DE-33KC 32-BIT, 33 MHz, MICROPROCESSOR, PQFP132 pdf datasheet </a></li></ul> <div class="navbox-styles"><style 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.navbox-odd{background-color:transparent}.mw-parser-output .navbox .hlist td dl,.mw-parser-output .navbox .hlist td ol,.mw-parser-output .navbox .hlist td ul,.mw-parser-output .navbox td.hlist dl,.mw-parser-output .navbox td.hlist ol,.mw-parser-output .navbox td.hlist ul{padding:0.125em 0}.mw-parser-output .navbox .navbar{display:block;font-size:100%}.mw-parser-output .navbox-title .navbar{float:left;text-align:left;margin-right:0.5em}body.skin--responsive .mw-parser-output .navbox-image img{max-width:none!important}@media print{body.ns-0 .mw-parser-output .navbox{display:none!important}}</style></div><div role="navigation" class="navbox" aria-labelledby="AMD_processors178" style="padding:3px"><table class="nowraplinks mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374" /><style 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abbr{color:var(--color-base)!important}@media(prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}}@media print{.mw-parser-output .navbar{display:none!important}}</style><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:AMD_processors" title="Template:AMD processors"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:AMD_processors" title="Template talk:AMD processors"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:AMD_processors" title="Special:EditPage/Template:AMD processors"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="AMD_processors178" style="font-size:114%;margin:0 4em"><a href="/wiki/List_of_AMD_processors" title="List of AMD processors">AMD processors</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">Lists</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/List_of_AMD_processors" title="List of AMD processors">Processors</a> <ul><li><a href="/wiki/List_of_AMD_K5_processors" title="List of AMD K5 processors">K5</a></li> <li><a href="/wiki/List_of_AMD_K6_processors" title="List of AMD K6 processors">K6</a></li> <li><a href="/wiki/List_of_AMD_Athlon_processors" title="List of AMD Athlon processors">Athlon</a> <ul><li><a href="/wiki/List_of_AMD_Athlon_XP_processors" title="List of AMD Athlon XP processors">XP</a></li> <li><a href="/wiki/List_of_AMD_Athlon_64_processors" title="List of AMD Athlon 64 processors">64</a></li> <li><a href="/wiki/List_of_AMD_Athlon_X2_processors" title="List of AMD Athlon X2 processors">X2</a></li> <li><a href="/wiki/List_of_AMD_Athlon_II_processors" title="List of AMD Athlon II processors">II</a></li></ul></li> <li><a href="/wiki/List_of_AMD_Phenom_processors" title="List of AMD Phenom processors">Phenom</a></li> <li><a href="/wiki/List_of_AMD_FX_processors" title="List of AMD FX processors">FX</a></li> <li><a href="/wiki/List_of_AMD_Ryzen_processors" title="List of AMD Ryzen processors">Ryzen</a></li> <li><a href="/wiki/List_of_AMD_Duron_processors" title="List of AMD Duron processors">Duron</a></li> <li><a href="/wiki/List_of_AMD_Sempron_processors" title="List of AMD Sempron processors">Sempron</a></li> <li><a href="/wiki/List_of_AMD_Turion_processors" title="List of AMD Turion processors">Turion</a></li> <li><a href="/wiki/List_of_AMD_Opteron_processors" title="List of AMD Opteron processors">Opteron</a></li> <li><a href="/wiki/List_of_AMD_Epyc_processors" class="mw-redirect" title="List of AMD Epyc processors">Epyc</a></li></ul></li> <li><a href="/wiki/List_of_AMD_processors_with_3D_graphics" title="List of AMD processors with 3D graphics">APUs</a></li> <li><a href="/wiki/List_of_AMD_CPU_microarchitectures" title="List of AMD CPU microarchitectures">Microarchitectures</a></li> <li><a href="/wiki/List_of_AMD_chipsets" title="List of AMD chipsets">Chipsets</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/List_of_AMD_CPU_microarchitectures" title="List of AMD CPU microarchitectures">Microarchitectures</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/IA-32" title="IA-32">IA-32</a> (<a href="/wiki/32-bit_computing" title="32-bit computing">32-bit</a>)</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/AMD_K5" title="AMD K5">K5</a></li> <li><a href="/wiki/AMD_K6" title="AMD K6">K6</a></li> <li><a href="/wiki/Athlon" title="Athlon">Athlon/K7</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">x86-64 desktop</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/AMD_K8" title="AMD K8">K8</a></li> <li><a href="/wiki/AMD_K9" title="AMD K9">K9</a></li> <li><a href="/wiki/AMD_10h" title="AMD 10h">K10 (aka 10h)</a></li> <li>15h <ul><li><a href="/wiki/Bulldozer_(microarchitecture)" title="Bulldozer (microarchitecture)">Bulldozer</a></li> <li><a href="/wiki/Piledriver_(microarchitecture)" title="Piledriver (microarchitecture)">Piledriver</a></li> <li><a href="/wiki/Steamroller_(microarchitecture)" title="Steamroller (microarchitecture)">Steamroller</a></li> <li><a href="/wiki/Excavator_(microarchitecture)" title="Excavator (microarchitecture)">Excavator</a></li></ul></li> <li><a href="/wiki/Zen_(microarchitecture)" title="Zen (microarchitecture)">Zen</a> <ul><li><a href="/wiki/Zen_(first_generation)" title="Zen (first generation)">1st gen</a></li> <li><a href="/wiki/Zen%2B" title="Zen+">Zen+</a></li> <li><a href="/wiki/Zen_2" title="Zen 2">Zen 2</a></li> <li><a href="/wiki/Zen_3" title="Zen 3">Zen 3</a></li> <li><a href="/wiki/Zen_3%2B" class="mw-redirect" title="Zen 3+">Zen 3+</a></li> <li><a href="/wiki/Zen_4" title="Zen 4">Zen 4</a></li> <li><a href="/wiki/Zen_5" title="Zen 5">Zen 5</a></li> <li><i><a href="/wiki/Zen_6" title="Zen 6">Zen 6</a></i></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">x86-64 low-power</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Bobcat_(microarchitecture)" title="Bobcat (microarchitecture)">Bobcat (aka 14h)</a></li> <li>16h <ul><li><a href="/wiki/Jaguar_(microarchitecture)" title="Jaguar (microarchitecture)">Jaguar</a></li> <li><a href="/wiki/Puma_(microarchitecture)" title="Puma (microarchitecture)">Puma</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/ARM_architecture_family#ARMv8-A" title="ARM architecture family">ARM64</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/AMD_K12" title="AMD K12">K12 (aka 12h)</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Current products</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="x86-64_(64-bit)40" scope="row" class="navbox-group" style="width:8.5em"><a href="/wiki/X86-64" title="X86-64">x86-64</a> (<a href="/wiki/64-bit_computing" title="64-bit computing">64-bit</a>)</th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Athlon" title="Athlon">Athlon</a></li> <li><a href="/wiki/Ryzen" title="Ryzen">Ryzen</a></li> <li><a href="/wiki/Threadripper" title="Threadripper">Threadripper</a></li> <li><a href="/wiki/Epyc" title="Epyc">Epyc</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;background-color: #DDDDDD">Discontinued</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:8.5em;background-color: #E6E6E6">Early x86 (<a href="/wiki/16-bit_computing" title="16-bit computing">16-bit</a>)</th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Am286" class="mw-redirect" title="Am286">Am286</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:8.5em;background-color: #E6E6E6"><a href="/wiki/IA-32" title="IA-32">IA-32</a> (<a href="/wiki/32-bit_computing" title="32-bit computing">32-bit</a>)</th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a class="mw-selflink selflink">Am386</a></li> <li><a href="/wiki/Am486" title="Am486">Am486</a></li> <li><a href="/wiki/Am5x86" title="Am5x86">Am5x86</a></li> <li><a href="/wiki/AMD_K5" title="AMD K5">K5</a></li> <li><a href="/wiki/AMD_K6" title="AMD K6">K6</a></li> <li><a href="/wiki/AMD_K6-2" title="AMD K6-2">K6-2</a></li> <li><a href="/wiki/AMD_K6-III" title="AMD K6-III">K6-III</a></li> <li><a href="/wiki/Athlon" title="Athlon">Athlon</a> <ul><li><a href="/wiki/Athlon_XP" class="mw-redirect" title="Athlon XP">XP</a></li> <li><a href="/wiki/Athlon_MP" class="mw-redirect" title="Athlon MP">MP</a></li></ul></li> <li><a href="/wiki/Duron" title="Duron">Duron</a></li> <li><a href="/wiki/Geode_(processor)" title="Geode (processor)">Geode</a></li> <li><a href="/wiki/AMD_%C3%89lan" title="AMD Élan">AMD Élan</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:8.5em;background-color: #E6E6E6"><a href="/wiki/X86-64" title="X86-64">x86-64</a> (<a href="/wiki/64-bit_computing" title="64-bit computing">64-bit</a>)</th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Athlon_64" title="Athlon 64">Athlon 64</a> <ul><li><a href="/wiki/Athlon_64_X2" title="Athlon 64 X2">X2</a></li> <li><a href="/wiki/Athlon_II" title="Athlon II">II</a></li></ul></li> <li><a href="/wiki/Sempron" title="Sempron">Sempron</a></li> <li><a href="/wiki/AMD_Turion" title="AMD Turion">Turion</a></li> <li><a href="/wiki/AMD_Phenom" title="AMD Phenom">Phenom</a> <ul><li><a href="/wiki/Phenom_II" title="Phenom II">II</a></li></ul></li> <li><a href="/wiki/AMD_FX" title="AMD FX">FX</a></li> <li><a href="/wiki/Opteron" title="Opteron">Opteron</a></li> <li><a href="/wiki/AMD_APU" title="AMD APU">A-series APUs</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:8.5em;background-color: #E6E6E6">Other</th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/AMD_Am9080" title="AMD Am9080">Am9080</a></li> <li><a href="/wiki/AMD_Am2900" title="AMD Am2900">Am2900</a> <ul><li><a href="/wiki/List_of_AMD_Am2900_and_Am29000_families" title="List of AMD Am2900 and Am29000 families">list</a></li></ul></li> <li><a href="/wiki/AMD_Am29000" title="AMD Am29000">Am29000</a></li> <li><a href="/wiki/Alchemy_(microarchitecture)" class="mw-redirect" title="Alchemy (microarchitecture)">Alchemy</a> <ul><li><a href="/wiki/MIPS_architecture#MIPS32" title="MIPS architecture">MIPS32</a></li></ul></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div><i>Italics</i> indicates an upcoming architecture.</div></td></tr></tbody></table></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?useformat=desktop&type=1x1&usesul3=0" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://en.wikipedia.org/w/index.php?title=Am386&oldid=1278150534">https://en.wikipedia.org/w/index.php?title=Am386&oldid=1278150534</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Help:Category" title="Help:Category">Categories</a>: <ul><li><a href="/wiki/Category:AMD_x86_microprocessors" title="Category:AMD x86 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