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<span class="vector-toc-numb">2</span> <span>Connector pin assignments</span> </div> </a> <ul id="toc-Connector_pin_assignments-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Applications" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Applications"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Applications</span> </div> </a> <ul id="toc-Applications-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-STD-32" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#STD-32"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>STD-32</span> </div> </a> <ul id="toc-STD-32-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> </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" > <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 cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet 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.trow>.thumbcaption{text-align:center}}@media screen{html.skin-theme-clientpref-night .mw-parser-output .tmulti .multiimageinner img{background-color:white}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .tmulti .multiimageinner img{background-color:white}}</style><div class="thumb tmulti tright"><div class="thumbinner multiimageinner" style="width:242px;max-width:242px"><div class="trow"><div class="tsingle" style="width:240px;max-width:240px"><div class="thumbimage" style="height:158px;overflow:hidden"><span typeof="mw:File"><a href="/wiki/File:Jonos_escort9-terminal-interface-top.jpg" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/1/14/Jonos_escort9-terminal-interface-top.jpg/238px-Jonos_escort9-terminal-interface-top.jpg" decoding="async" width="238" height="159" class="mw-file-element" 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//upload.wikimedia.org/wikipedia/commons/thumb/4/45/Jonos_escort13-C2150-upgrade-top.jpg/476px-Jonos_escort13-C2150-upgrade-top.jpg 2x" data-file-width="6000" data-file-height="4000" /></a></span></div></div></div><div class="trow"><div class="tsingle" style="width:240px;max-width:240px"><div class="thumbimage" style="height:158px;overflow:hidden"><span typeof="mw:File"><a href="/wiki/File:Jonos_escort15-CPU-serial-top.jpg" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/7/77/Jonos_escort15-CPU-serial-top.jpg/238px-Jonos_escort15-CPU-serial-top.jpg" decoding="async" width="238" height="159" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/77/Jonos_escort15-CPU-serial-top.jpg/357px-Jonos_escort15-CPU-serial-top.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/77/Jonos_escort15-CPU-serial-top.jpg/476px-Jonos_escort15-CPU-serial-top.jpg 2x" data-file-width="6000" data-file-height="4000" /></a></span></div></div></div><div class="trow"><div class="tsingle" style="width:240px;max-width:240px"><div class="thumbimage" style="height:158px;overflow:hidden"><span typeof="mw:File"><a href="/wiki/File:Jonos_escort7-FDC-top.jpg" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/1/1e/Jonos_escort7-FDC-top.jpg/238px-Jonos_escort7-FDC-top.jpg" decoding="async" width="238" height="159" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/1e/Jonos_escort7-FDC-top.jpg/357px-Jonos_escort7-FDC-top.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/1e/Jonos_escort7-FDC-top.jpg/476px-Jonos_escort7-FDC-top.jpg 2x" data-file-width="6000" data-file-height="4000" /></a></span></div></div></div><div class="trow" style="display:flex"><div class="thumbcaption">STD computer cards</div></div></div></div> <p>The <b>STD Bus</b> is a <a href="/wiki/Bus_(computing)" title="Bus (computing)">computer bus</a> that was used primarily for <a href="/wiki/Industrial_control_system" title="Industrial control system">industrial control systems</a>, but has also found applications in <a href="/wiki/Computing" title="Computing">computing</a>. The STD Bus has also been designated as <b>STD-80</b>, referring to its relation to the <a href="/wiki/Zilog_Z80" title="Zilog Z80">Zilog Z80</a> series <a href="/wiki/Microprocessor" title="Microprocessor">microprocessors</a>. The term <i>STD</i> is in reference to "standard", but several marketing terms were also promulgated, including <i>simple to design</i>, <i>simple to debug</i>, and <i>swift to deliver</i>. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Description">Description</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=STD_Bus&action=edit&section=1" title="Edit section: Description"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The STD Bus uses 6.5" by 4.5" <a href="/wiki/Expansion_card" title="Expansion card">expansion card</a> with an <a href="/wiki/Edge_connector" title="Edge connector">edge connector</a> with 56 pins. Many different types of cards have been available for the STD Bus, from processing cards, <a href="/wiki/Random-access_memory" title="Random-access memory">RAM</a> cards, <a href="/wiki/Input/output" title="Input/output">I/O</a> cards, and specialized cards for various applications. </p><p>The use of the STD bus has declined. From the over one hundred manufacturers of components during its peak, vendor numbers have dwindled to under a dozen, but it is still used by hobbyists, manufacturers and in industrial applications. </p> <div class="mw-heading mw-heading2"><h2 id="Connector_pin_assignments">Connector pin assignments</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=STD_Bus&action=edit&section=2" title="Edit section: Connector pin assignments"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The STD Bus has a card edge connector with 56 contacts. The pin configuration is as follows. Flow is relative using an STD Bus processor card.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p> <table class="wikitable"> <tbody><tr> <th>Pin</th> <th><a href="/wiki/Mnemonic" title="Mnemonic">Mnemonic</a></th> <th>Signal flow</th> <th>Description</th> <th>Pin</th> <th>Mnemonic</th> <th>Signal flow</th> <th>Description </th></tr> <tr> <td>1</td> <td>+5V</td> <td>In</td> <td>Logic <a href="/wiki/Voltage" title="Voltage">power</a></td> <td>2</td> <td>+5V</td> <td>In</td> <td>Logic power </td></tr> <tr> <td>3</td> <td>GND</td> <td>In</td> <td>Logic <a href="/wiki/Ground_(electricity)" title="Ground (electricity)">ground</a></td> <td>4</td> <td>GND</td> <td>In</td> <td>Logic ground </td></tr> <tr> <td>5</td> <td>-5V</td> <td>In</td> <td>Negative logic power</td> <td>6</td> <td>-5V</td> <td>In</td> <td>Negative logic power </td></tr> <tr> <td>7</td> <td>D3</td> <td>In/out</td> <td><a href="/wiki/Data_(computing)" class="mw-redirect" title="Data (computing)">Data</a> bus</td> <td>8</td> <td>D7</td> <td>In/out</td> <td>Data bus </td></tr> <tr> <td>9</td> <td>D2</td> <td>In/out</td> <td>Data bus</td> <td>10</td> <td>D6</td> <td>In/out</td> <td>Data bus </td></tr> <tr> <td>11</td> <td>D1</td> <td>In/out</td> <td>Data bus</td> <td>12</td> <td>D5</td> <td>In/out</td> <td>Data bus </td></tr> <tr> <td>13</td> <td>D0</td> <td>In/out</td> <td>Data bus</td> <td>14</td> <td>D4</td> <td>In/out</td> <td>Data bus </td></tr> <tr> <td>15</td> <td>A7</td> <td>Out</td> <td><a href="/wiki/Memory_address" title="Memory address">Address</a> bus</td> <td>16</td> <td>A15</td> <td>Out</td> <td>Address bus </td></tr> <tr> <td>17</td> <td>A6</td> <td>Out</td> <td>Address bus</td> <td>18</td> <td>A14</td> <td>Out</td> <td>Address bus </td></tr> <tr> <td>19</td> <td>A5</td> <td>Out</td> <td>Address bus</td> <td>20</td> <td>A13</td> <td>Out</td> <td>Address bus </td></tr> <tr> <td>21</td> <td>A4</td> <td>Out</td> <td>Address bus</td> <td>22</td> <td>A12</td> <td>Out</td> <td>Address bus </td></tr> <tr> <td>23</td> <td>A3</td> <td>Out</td> <td>Address bus</td> <td>24</td> <td>A11</td> <td>Out</td> <td>Address bus </td></tr> <tr> <td>25</td> <td>A2</td> <td>Out</td> <td>Address bus</td> <td>26</td> <td>A10</td> <td>Out</td> <td>Address bus </td></tr> <tr> <td>27</td> <td>A1</td> <td>Out</td> <td>Address bus</td> <td>28</td> <td>A9</td> <td>Out</td> <td>Address bus </td></tr> <tr> <td>29</td> <td>A0</td> <td>Out</td> <td>Address bus</td> <td>30</td> <td>A8</td> <td>Out</td> <td>Address bus </td></tr> <tr> <td>31</td> <td>WR</td> <td>Out</td> <td>Write to <a href="/wiki/Computer_memory" title="Computer memory">memory</a> or <a href="/wiki/I/O" class="mw-redirect" title="I/O">I/O</a></td> <td>32</td> <td>RD</td> <td>Out</td> <td>Read to memory or I/O </td></tr> <tr> <td>33</td> <td>IORQ</td> <td>Out</td> <td>I/O address select</td> <td>34</td> <td>MEMRQ</td> <td>Out</td> <td>Memory address select </td></tr> <tr> <td>35</td> <td>IOEX</td> <td>Out</td> <td>I/O expansion</td> <td>36</td> <td>MEMEX</td> <td>Out</td> <td>Memory expansion </td></tr> <tr> <td>37</td> <td>REFRESH</td> <td>Out</td> <td>Refresh timing</td> <td>38</td> <td>MCSYNC</td> <td>Out</td> <td>CPU machine cycle sync </td></tr> <tr> <td>39</td> <td>STATUS 1</td> <td>Out</td> <td>CPU status</td> <td>40</td> <td>STATUS 0</td> <td>Out</td> <td>CPU status </td></tr> <tr> <td>41</td> <td>BUSAK</td> <td>Out</td> <td>Bus acknowledge</td> <td>42</td> <td>BUSRQ</td> <td>In</td> <td>Bus request </td></tr> <tr> <td>43</td> <td>INTAK</td> <td>Out</td> <td><a href="/wiki/Interrupt" title="Interrupt">Interrupt</a> acknowledge</td> <td>44</td> <td>INTRQ</td> <td>In</td> <td>Interrupt request </td></tr> <tr> <td>45</td> <td>WAITRQ</td> <td>In</td> <td>Wait request</td> <td>46</td> <td>NMIRQ</td> <td>In</td> <td><a href="/wiki/Mask_(computing)" title="Mask (computing)">Non-maskable</a> interrupt </td></tr> <tr> <td>47</td> <td>SYSRESET</td> <td>Out</td> <td>System reset</td> <td>48</td> <td>PBRESET</td> <td>In</td> <td>Push button reset </td></tr> <tr> <td>49</td> <td>CLK</td> <td>Out</td> <td><a href="/wiki/Clock_signal" title="Clock signal">Clock</a> from processor</td> <td>50</td> <td>CNTRL</td> <td>In</td> <td>Aux timing </td></tr> <tr> <td>51</td> <td>PCO</td> <td>Out</td> <td>Priority chain out</td> <td>52</td> <td>PCI</td> <td>In</td> <td>Priority chain in </td></tr> <tr> <td>53</td> <td>AUX GND</td> <td>In</td> <td>Aux ground</td> <td>54</td> <td>AUX GND</td> <td>In</td> <td>Aux ground </td></tr> <tr> <td>55</td> <td>AUX +12V</td> <td>In</td> <td>Aux positive</td> <td>56</td> <td>AUX -12V</td> <td>In</td> <td>Aux negative </td></tr></tbody></table> <div class="mw-heading mw-heading2"><h2 id="Applications">Applications</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=STD_Bus&action=edit&section=3" title="Edit section: Applications"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>A focus of the STD bus was its ability to build a system using the exact bus cards required for an application. The compact size of a card made the STD bus system more adaptable to various applications than the contemporary computer buses of the mid-1980s such as the <a href="/wiki/S-100_bus" title="S-100 bus">S-100</a> and the <a href="/wiki/SS-50_bus" title="SS-50 bus">SS-50</a>, because it could use <a href="/wiki/Servo_control" title="Servo control">servo control</a> cards along with a fully <a href="/wiki/Computer_programming" title="Computer programming">programmable computer</a> for <a href="/wiki/Operation_(mathematics)" title="Operation (mathematics)">mathematical operations</a>. </p><p>In applications for running an <a href="/wiki/Observatory" title="Observatory">astronomical observatory</a>, the large industrial base of cards, and the system's expandability, made the system desirable for use in a <a href="/wiki/Photometry_(optics)" title="Photometry (optics)">photometry</a> lab to control the <a href="/wiki/Telescope" title="Telescope">telescope</a> as well as do the <a href="/wiki/Data_logging" class="mw-redirect" title="Data logging">data logging</a> and computations required.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p><p>In typical university laboratory settings of the mid - late 80's, STD bus data acquisition systems were commonplace using Z80 or similar processor cards for the data capture, processing and control, parallel I/O cards for experiment control as well as analogue to digital conversion cards for reading experiment analogue parameters. Such systems would only occupy minimal rack space, while providing full <a href="/wiki/CP/M" title="CP/M">CP/M</a> processing features.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="STD-32">STD-32</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=STD_Bus&action=edit&section=4" title="Edit section: STD-32"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The STD-32 is a <a href="/wiki/Pin_compatibility" title="Pin compatibility">pin compatible</a> STD interface that allows the co-existence of both 8-bit and 32-bit systems on a single bus. This is accomplished by the addition of pins between the normal pins that do not connect, nor do they interfere with the original specification. This allows with the proper STD-32 <a href="/wiki/Backplane" title="Backplane">backplane</a> the ability to run <a href="/wiki/Legacy_system" title="Legacy system">legacy</a> cards used for specific applications on the same bus without having to upgrade the complete system. </p> <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=STD_Bus&action=edit&section=5" 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"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text">Prolog 7801 8085A Processor Card Specifications September 1981</span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text">The STD Bus and other microcomputer buses for photometrists. By Russell M. Genet and Douglass J. Sauer. From the Fairborn Observatory in Fairborn Ohio.</span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text">MICRO-LEARN: A low cost microprocessor development system for laboratory use based on the STD bus, Z-80 CPU and CP/M Operating system. By D. Crosetto(INFN, Turin), Zhong-Ren Gao(Beijing, Inst. Phys.)</span> </li> </ol></div></div> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline dl,.mw-parser-output .hlist.inline ol,.mw-parser-output .hlist.inline ul,.mw-parser-output .hlist dl dl,.mw-parser-output .hlist dl ol,.mw-parser-output .hlist dl ul,.mw-parser-output .hlist ol dl,.mw-parser-output .hlist ol ol,.mw-parser-output .hlist ol ul,.mw-parser-output .hlist ul dl,.mw-parser-output .hlist ul ol,.mw-parser-output .hlist ul ul{display:inline}.mw-parser-output .hlist .mw-empty-li{display:none}.mw-parser-output .hlist dt::after{content:": "}.mw-parser-output .hlist dd::after,.mw-parser-output .hlist li::after{content:" · ";font-weight:bold}.mw-parser-output .hlist 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li a 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:Computer_bus" title="Template:Computer bus"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Computer_bus" title="Template talk:Computer bus"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Computer_bus" title="Special:EditPage/Template:Computer bus"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Technical_and_de_facto_standards_for_wired_computer_buses" style="font-size:114%;margin:0 4em"><a href="/wiki/Technical_standard" title="Technical standard">Technical</a> and <a href="/wiki/De_facto_standard" title="De facto standard"><i>de facto</i> standards</a> for <a href="/wiki/Wired_communication" title="Wired communication">wired</a> <a href="/wiki/Bus_(computing)" title="Bus (computing)">computer buses</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">General</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/System_bus" title="System bus">System bus</a></li> <li><a href="/wiki/Front-side_bus" title="Front-side bus">Front-side bus</a></li> <li><a href="/wiki/Back-side_bus" title="Back-side bus">Back-side bus</a></li> <li><a href="/wiki/Daisy_chain_(electrical_engineering)" title="Daisy chain (electrical engineering)">Daisy chain</a></li> <li><a href="/wiki/Control_bus" title="Control bus">Control bus</a></li> <li><a href="/wiki/Address_bus" class="mw-redirect" title="Address bus">Address bus</a></li> <li><a href="/wiki/Bus_contention" title="Bus contention">Bus contention</a></li> <li><a href="/wiki/Bus_mastering" title="Bus mastering">Bus mastering</a></li> <li><a href="/wiki/Network_on_a_chip" title="Network on a chip">Network on a chip</a></li> <li><a href="/wiki/Plug_and_play" title="Plug and play">Plug and play</a></li> <li><a href="/wiki/List_of_interface_bit_rates#Computer_buses" title="List of interface bit rates">List of bus bandwidths</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Standards</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/SS-50_bus" title="SS-50 bus">SS-50 bus</a></li> <li><a href="/wiki/S-100_bus" title="S-100 bus">S-100 bus</a></li> <li><a href="/wiki/Multibus" title="Multibus">Multibus</a></li> <li><a href="/wiki/Unibus" title="Unibus">Unibus</a></li> <li><a href="/wiki/VAXBI_bus" title="VAXBI bus">VAXBI</a></li> <li><a href="/wiki/MBus_(SPARC)" title="MBus (SPARC)">MBus</a></li> <li><a class="mw-selflink selflink">STD Bus</a></li> <li><a href="/wiki/System_Management_Bus" title="System Management Bus">SMBus</a></li> <li><a href="/wiki/Q-Bus" title="Q-Bus">Q-Bus</a></li> <li><a href="/wiki/Europe_Card_Bus" title="Europe Card Bus">Europe Card Bus</a></li> <li><a href="/wiki/Industry_Standard_Architecture" title="Industry Standard Architecture">ISA</a></li> <li><a href="/wiki/STEbus" title="STEbus">STEbus</a></li> <li><a href="/wiki/Amiga_Zorro_II" title="Amiga Zorro II">Zorro II</a></li> <li><a href="/wiki/Amiga_Zorro_III" title="Amiga Zorro III">Zorro III</a></li> <li><a href="/wiki/Computer_Automated_Measurement_and_Control" title="Computer Automated Measurement and Control">CAMAC</a></li> <li><a href="/wiki/FASTBUS" title="FASTBUS">FASTBUS</a></li> <li><a href="/wiki/Low_Pin_Count" title="Low Pin Count">LPC</a></li> <li><a href="/wiki/HP_Precision_Bus" title="HP Precision Bus">HP Precision Bus</a></li> <li><a href="/wiki/Extended_Industry_Standard_Architecture" title="Extended Industry Standard Architecture">EISA</a></li> <li><a href="/wiki/VMEbus" title="VMEbus">VME</a></li> <li><a href="/wiki/VME_eXtensions_for_Instrumentation" title="VME eXtensions for Instrumentation">VXI</a></li> <li><a href="/wiki/VXS" title="VXS">VXS</a></li> <li><a href="/wiki/VPX" title="VPX">VPX</a></li> <li><a href="/wiki/NuBus" title="NuBus">NuBus</a></li> <li><a href="/wiki/TURBOchannel" title="TURBOchannel">TURBOchannel</a></li> <li><a href="/wiki/Micro_Channel_architecture" title="Micro Channel architecture">MCA</a></li> <li><a href="/wiki/SBus" title="SBus">SBus</a></li> <li><a href="/wiki/VESA_Local_Bus" title="VESA Local Bus">VLB</a></li> <li><a href="/wiki/GSC_bus" title="GSC bus">HP GSC bus</a></li> <li><a href="/wiki/InfiniBand" title="InfiniBand">InfiniBand</a></li> <li><a href="/wiki/Ethernet" title="Ethernet">Ethernet</a></li> <li><a href="/wiki/Ultra_Port_Architecture" title="Ultra Port Architecture">UPA</a></li> <li><a href="/wiki/Peripheral_Component_Interconnect" title="Peripheral Component Interconnect">PCI</a></li> <li><a href="/wiki/PCI-X" title="PCI-X">PCI Extended (PCI-X)</a></li> <li><a href="/wiki/PCI_eXtensions_for_Instrumentation" title="PCI eXtensions for Instrumentation">PXI</a></li> <li><a href="/wiki/PCI_Express" title="PCI Express">PCI Express (PCIe)</a></li> <li><a href="/wiki/Accelerated_Graphics_Port" title="Accelerated Graphics Port">AGP</a></li> <li><a href="/wiki/Compute_Express_Link" title="Compute Express Link">Compute Express Link (CXL)</a></li> <li><a href="/wiki/Direct_Media_Interface" title="Direct Media Interface">Direct Media Interface (DMI)</a></li> <li><a href="/wiki/RapidIO" title="RapidIO">RapidIO</a></li> <li><a href="/wiki/Intel_QuickPath_Interconnect" title="Intel QuickPath Interconnect">Intel QuickPath Interconnect</a></li> <li><a href="/wiki/NVLink" title="NVLink">NVLink</a></li> <li><a href="/wiki/HyperTransport" title="HyperTransport">HyperTransport</a> <ul><li><a href="/wiki/Infinity_Fabric" class="mw-redirect" title="Infinity Fabric">Infinity Fabric</a></li></ul></li> <li><a href="/wiki/Intel_Ultra_Path_Interconnect" title="Intel Ultra Path Interconnect">Intel Ultra Path Interconnect</a></li> <li><a href="/wiki/Coherent_Accelerator_Processor_Interface" title="Coherent Accelerator Processor Interface">Coherent Accelerator Processor Interface (CAPI)</a></li> <li><a href="/wiki/SpaceWire" title="SpaceWire">SpaceWire</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Storage</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/ST-506/ST-412" title="ST-506/ST-412">ST-506</a></li> <li><a href="/wiki/Enhanced_Small_Disk_Interface" title="Enhanced Small Disk Interface">ESDI</a></li> <li><a href="/wiki/Intelligent_Peripheral_Interface" title="Intelligent Peripheral Interface">IPI</a></li> <li><a href="/wiki/Storage_Module_Device" title="Storage Module Device">SMD</a></li> <li><a href="/wiki/Parallel_ATA" title="Parallel ATA">Parallel ATA (PATA)</a></li> <li><a href="/wiki/Bus_and_Tag" title="Bus and Tag">Bus and Tag</a></li> <li><a href="/wiki/Digital_Storage_Systems_Interconnect" title="Digital Storage Systems Interconnect">DSSI</a></li> <li><a href="/wiki/HIPPI" title="HIPPI">HIPPI</a></li> <li><a href="/wiki/SATA" title="SATA">Serial ATA (SATA)</a></li> <li><a href="/wiki/SCSI" title="SCSI">SCSI</a> <ul><li><a href="/wiki/Parallel_SCSI" title="Parallel SCSI">Parallel</a></li> <li><a href="/wiki/Serial_Attached_SCSI" title="Serial Attached SCSI">SAS</a></li></ul></li> <li><a href="/wiki/ESCON" title="ESCON">ESCON</a></li> <li><a href="/wiki/Fibre_Channel" title="Fibre Channel">Fibre Channel</a></li> <li><a href="/wiki/Serial_Storage_Architecture" title="Serial Storage Architecture">SSA</a></li> <li><a href="/wiki/SATA_Express" title="SATA Express">SATAe</a></li> <li>PCI Express (via <a href="/wiki/Advanced_Host_Controller_Interface" title="Advanced Host Controller Interface">AHCI</a> or <a href="/wiki/NVM_Express" title="NVM Express">NVMe</a> logical device interface)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Peripheral</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Apple_Desktop_Bus" title="Apple Desktop Bus">Apple Desktop Bus</a></li> <li><a href="/wiki/Atari_SIO" title="Atari SIO">Atari SIO</a></li> <li><a href="/wiki/Digital_Control_Bus" title="Digital Control Bus">DCB</a></li> <li><a href="/wiki/Commodore_bus" title="Commodore bus">Commodore bus</a></li> <li><a href="/wiki/HP-IL" title="HP-IL">HP-IL</a></li> <li><a href="/wiki/HIL_bus" title="HIL bus">HIL</a></li> <li><a href="/wiki/MIDI" title="MIDI">MIDI</a></li> <li><a href="/wiki/RS-232" title="RS-232">RS-232</a></li> <li><a href="/wiki/RS-422" title="RS-422">RS-422</a></li> <li><a href="/wiki/RS-423" title="RS-423">RS-423</a></li> <li><a href="/wiki/RS-485" title="RS-485">RS-485</a></li> <li><a href="/wiki/Lightning_(connector)" title="Lightning (connector)">Lightning</a></li> <li><a href="/wiki/DMX512#DMX512-A" title="DMX512">DMX512-A</a></li> <li><a href="/wiki/IEEE-488" class="mw-redirect" title="IEEE-488">IEEE-488 (GPIB)</a></li> <li><a href="/wiki/IEEE_1284" title="IEEE 1284">IEEE-1284 (parallel port)</a></li> <li><a href="/wiki/IEEE_1394" title="IEEE 1394">IEEE-1394 (FireWire)</a></li> <li><a href="/wiki/UNI/O" title="UNI/O">UNI/O</a></li> <li><a href="/wiki/1-Wire" title="1-Wire">1-Wire</a></li> <li><a href="/wiki/I%C2%B2C" title="I²C">I²C</a> (<a href="/wiki/ACCESS.bus" title="ACCESS.bus">ACCESS.bus</a>, <a href="/wiki/Power_Management_Bus" title="Power Management Bus">PMBus</a>, <a href="/wiki/System_Management_Bus" title="System Management Bus">SMBus</a>)</li> <li><a href="/wiki/I3C_(bus)" title="I3C (bus)">I3C</a></li> <li><a href="/wiki/Serial_Peripheral_Interface" title="Serial Peripheral Interface">SPI</a></li> <li><a href="/wiki/IEC_61030" title="IEC 61030">D²B</a></li> <li><a href="/wiki/Parallel_SCSI" title="Parallel SCSI">Parallel SCSI</a></li> <li><a href="/wiki/Profibus" title="Profibus">Profibus</a></li> <li><a href="/wiki/USB" title="USB">USB</a></li> <li><a href="/wiki/Camera_Link" title="Camera Link">Camera Link</a></li> <li><a href="/wiki/PCI_Express#PCI_Express_External_Cabling" title="PCI Express">External PCIe</a></li> <li><a href="/wiki/Thunderbolt_(interface)" title="Thunderbolt (interface)">Thunderbolt</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Audio</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/ADAT_Lightpipe" title="ADAT Lightpipe">ADAT Lightpipe</a></li> <li><a href="/wiki/AES3" title="AES3">AES3</a></li> <li><a href="/wiki/Intel_High_Definition_Audio" title="Intel High Definition Audio">Intel HD Audio</a></li> <li><a href="/wiki/I%C2%B2S" title="I²S">I²S</a></li> <li><a href="/wiki/MADI" title="MADI">MADI</a></li> <li><a href="/wiki/McASP" title="McASP">McASP</a></li> <li><a href="/wiki/S/PDIF" title="S/PDIF">S/PDIF</a></li> <li><a href="/wiki/TOSLINK" title="TOSLINK">TOSLINK</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Portable</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/PC_Card" title="PC Card">PC Card</a></li> <li><a href="/wiki/ExpressCard" title="ExpressCard">ExpressCard</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Embedded</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/Multidrop_bus" title="Multidrop bus">Multidrop bus</a></li> <li><a href="/wiki/CoreConnect" title="CoreConnect">CoreConnect</a></li> <li><a href="/wiki/Advanced_Microcontroller_Bus_Architecture" title="Advanced Microcontroller Bus Architecture">AMBA</a> (<a href="/wiki/Advanced_eXtensible_Interface" title="Advanced eXtensible Interface">AXI</a>)</li> <li><a href="/wiki/Wishbone_(computer_bus)" title="Wishbone (computer bus)">Wishbone</a></li> <li><a href="/wiki/SLIMbus" title="SLIMbus">SLIMbus</a></li></ul> </div></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div><small>Interfaces are listed by their speed in the (roughly) ascending order, so the interface at the end of each section should be the fastest.</small><br /><span class="noviewer" typeof="mw:File"><span title="Category"><img alt="" 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