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<div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <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">Computer</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 hproduct vevent"><caption class="infobox-title fn summary">DEC Firefly</caption><tbody><tr><th scope="row" class="infobox-label">Developer</th><td class="infobox-data"><a href="/wiki/Digital_Equipment_Corporation" title="Digital Equipment Corporation">Digital Equipment Corporation</a> <a href="/wiki/DEC_Systems_Research_Center" title="DEC Systems Research Center">Systems Research Center</a></td></tr><tr><th scope="row" class="infobox-label">Type</th><td class="infobox-data"><a href="/wiki/Shared_memory_architecture" class="mw-redirect" title="Shared memory architecture">Shared memory</a> <a href="/wiki/Asymmetric_multiprocessor" class="mw-redirect" title="Asymmetric multiprocessor">asymmetric multiprocessor</a> <a href="/wiki/Workstation" title="Workstation">workstation</a></td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Operating_system" title="Operating system">Operating system</a></th><td class="infobox-data">Taos, <a href="/wiki/V_(operating_system)" title="V (operating system)">V (operating system)</a></td></tr><tr><th scope="row" class="infobox-label">Memory</th><td class="infobox-data">4 MB – 128 MB</td></tr><tr><th scope="row" class="infobox-label">Display</th><td class="infobox-data">1024 by 768 pixel monochrome display</td></tr><tr><th scope="row" class="infobox-label">Input</th><td class="infobox-data">Keyboard and mouse</td></tr></tbody></table> <p>The <b>Firefly</b> was a <a href="/wiki/Shared_memory_architecture" class="mw-redirect" title="Shared memory architecture">shared memory</a> <a href="/wiki/Asymmetric_multiprocessor" class="mw-redirect" title="Asymmetric multiprocessor">asymmetric multiprocessor</a> <a href="/wiki/Workstation" title="Workstation">workstation</a>, developed by the <a href="/wiki/DEC_Systems_Research_Center" title="DEC Systems Research Center">Systems Research Center</a>, a research organization within <a href="/wiki/Digital_Equipment_Corporation" title="Digital Equipment Corporation">Digital Equipment Corporation</a>. The first version built contained up to seven <a href="/wiki/MicroVAX_78032" title="MicroVAX 78032">MicroVAX 78032</a> microprocessors. The cache from each of the microprocessors kept a consistent view of the same main memory using a <a href="/wiki/Cache_coherency" class="mw-redirect" title="Cache coherency">cache coherency</a> algorithm, the <a href="/wiki/Firefly_(cache_coherence_protocol)" title="Firefly (cache coherence protocol)">Firefly protocol</a>. The second version of the Firefly used faster CVAX 78034 microprocessors. It was later introduced as a product by DEC as the <a href="/wiki/VAXstation#VAXstation_3520_and_VAXstation_3540" title="VAXstation">VAXstation 3520/3540</a> codenamed <i>Firefox</i>. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Hardware_description">Hardware description</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=DEC_Firefly&action=edit&section=1" title="Edit section: Hardware description"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The Firefly was an <a href="/wiki/Asymmetric_multiprocessor" class="mw-redirect" title="Asymmetric multiprocessor">asymmetric multiprocessor</a> specialized racked computer as only one of the microprocessors had access to a <a href="/wiki/Q-Bus" title="Q-Bus">Q-Bus</a> interface that implemented the I/O subsystem. </p> <div class="mw-heading mw-heading3"><h3 id="Processors">Processors</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=DEC_Firefly&action=edit&section=2" title="Edit section: Processors"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The Firefly contained a primary processor board and zero, one, two or three secondary processor boards. These processor boards were 8 by 10 inches large. The primary processor board contained a microprocessor, its floating-point coprocessor and cache, and the Q-Bus control logic. The secondary processor boards each contained two microprocessors, their floating-point coprocessors and caches. The original Firefly processor boards used the <a href="/wiki/MicroVAX_78032" title="MicroVAX 78032">MicroVAX 78032</a> microprocessor and MicroVAX 78132 floating-point coprocessor, but later Firefly systems used the faster <a href="/wiki/CVAX#CVAX_78034" title="CVAX">CVAX 78034</a> microprocessors, CVAX Floating Point Chips (floating-point coprocessors). The processor boards communicated with each other and the memory via the MBus. The components used in the processor boards of the original Firefly were the same as those originally designed for the MicroVAX II system. Originally, the system was designed to use Motorola 68010 processors within this general architecture.<sup id="cite_ref-thacker19840922_draft_1-0" class="reference"><a href="#cite_note-thacker19840922_draft-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p><p>The caches in the Firefly were direct-mapped for simplicity and to support multiprocessing; they used the <a href="/wiki/Firefly_(cache_coherence_protocol)" title="Firefly (cache coherence protocol)">Firefly protocol</a> to ensure cache coherency. The caches on the MicroVAX processor boards had a capacity of 16 KB (4,096 4-byte lines) and were implemented with eleven 2 KB (4-bit by 4,096-word) <a href="/wiki/Static_random-access_memory" title="Static random-access memory">SRAMs</a> and twenty <a href="/wiki/Transistor%E2%80%93transistor_logic" title="Transistor–transistor logic">transistor–transistor logic</a> (TTL) devices. The cache control logic was implemented with fifteen devices, mostly consisting of <a href="/wiki/Programmable_array_logic" class="mw-redirect" title="Programmable array logic">programmable array logic</a> (PAL) devices. The caches on CVAX processor boards differed only in the capacity: 64 KB (16,384 4-byte lines) and were implemented with 8 KB (4-bit by 16,384-word) SRAMs. </p> <div class="mw-heading mw-heading3"><h3 id="Memory">Memory</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=DEC_Firefly&action=edit&section=3" title="Edit section: Memory"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Processors in the Firefly communicated with the main memory through their individual <a href="/wiki/CPU_cache" title="CPU cache">caches</a> and over the MBus. Memory was implemented by one to four memory modules that connect to the MBus. The original Firefly had a master memory module with a capacity of 4 MB and up to three slave memory modules of the same capacity for a memory capacity of 4 to 16 MB. Later Firefly systems used a memory module with a capacity of 32 MB, for a memory capacity of 32 to 128 MB. The memory access time in the original MicroVAX-based Firefly was 400 ns, while the CVAX version had a memory access time of 200 ns. </p> <div class="mw-heading mw-heading3"><h3 id="I/O"><span id="I.2FO"></span>I/O</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=DEC_Firefly&action=edit&section=4" title="Edit section: I/O"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>I/O devices were connected to the system via the Q-Bus, whose 22-bit address space was mapped onto the 24-bit memory address space of the Firefly by using mapping registers controlled by the master processor. The devices used <a href="/wiki/Direct_memory_access" title="Direct memory access">direct memory access</a> (DMA) to access the memory though the cache of the main processor. The Firefly's I/O devices were: a <b>monochrome display controller</b> (MDC), a buffered controller for magnetic disk drives, the <b>RQDX3</b> and an <b>DEQNA</b> Ethernet controller. </p><p>While DEC used existing components for most of the I/O system, the display controller was designed specifically for the Firefly by the project's engineers who felt that no existing product met their performance requirements. There were two displayer controllers, one providing color graphics, and the other monochrome graphics. These controllers operated by checking a work queue set up in the memory using DMA, providing fully symmetric access to the display hardware by all processors. </p><p>The monochrome display controller (MDC) was contained on a board half as large as the processor boards and was capable of achieving a resolution of 1024 by 768 pixels. It contained a 16-bit <a href="/wiki/List_of_AMD_Am2900_and_Am29000_families#Am29100_Family" title="List of AMD Am2900 and Am29000 families">Am29116</a> microprocessor clocked at 10 MHz with a 10 KB memory containing 2,048 40-bit words of microinstruction memory. A 1024 by 1024-pixel frame buffer was implemented with <a href="/wiki/VRAM" class="mw-redirect" title="VRAM">VRAMs</a>, with three quarters used to hold the display <a href="/wiki/Bitmap" title="Bitmap">bitmap</a> with the rest available for the <a href="/wiki/Display_manager" class="mw-redirect" title="Display manager">display manager</a> or used to <a href="/wiki/Cache_(computing)" title="Cache (computing)">cache</a> fonts. </p><p>The 29116 microprocessor periodically checked a work queue set up in the memory using DMA and executed commands from that queue. The commands performed <a href="/wiki/BitBlt" class="mw-redirect" title="BitBlt">BitBlt</a> operations within the frame buffer, between the system memory and frame buffer and were also used to paint characters from the font cache. </p><p>The display hardware also provided an interface for a keyboard and mouse. Sixty times per second, the MDC wrote to the memory the position of the mouse and an unencoded bitmap representing the state of the keyboard. As a result of implementing the MDC as an I/O device, the Firefly supported multiple display controllers in one system connected to multiple monitors. </p> <div class="mw-heading mw-heading2"><h2 id="Software">Software</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=DEC_Firefly&action=edit&section=5" title="Edit section: Software"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Two of the variants of the Firefly used system software called <i>Topaz</i>, which consisted of multiple components such as the <i>Taos</i> <a href="/wiki/Operating_system" title="Operating system">operating system</a> that used a <a href="/wiki/Microkernel" title="Microkernel">microkernel</a> named <i>the Nub</i> and the <i>Trestle</i> <a href="/wiki/Window_system" class="mw-redirect" title="Window system">window system</a>. One of the features of Taos was that it supported the <a href="/wiki/Ultrix" title="Ultrix">Ultrix</a> binary calling interface, allowed existing Ultrix binaries compiled for the <a href="/wiki/MicroVAX" title="MicroVAX">MicroVAX</a> run unmodified image on the Firefly. In contrast to Ultrix, Topaz supported processes with multiple threads which could span multiple processors, and the Taos system could run both Ultrix and Topaz applications at the same time. <a href="/wiki/Modula-2%2B" title="Modula-2+">Modula-2+</a>, (a <a href="/wiki/Modula-2" title="Modula-2">Modula-2</a> extended language) was used to program both Topaz and its applications. </p><p>The Stanford <a href="/wiki/V_(operating_system)" title="V (operating system)">V (operating system)</a> also supported Firefly in a configuration with one CVAX and four Microvax-II CPUs in a BA123 chassis and QVSS?VCB01 graphics. </p> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=DEC_Firefly&action=edit&section=6" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Firefly_(cache_coherence_protocol)" title="Firefly (cache coherence protocol)">Firefly protocol</a> - The <a href="/wiki/Cache_coherency" class="mw-redirect" title="Cache coherency">cache coherency</a> protocol used by the Firefly.</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=DEC_Firefly&action=edit&section=7" 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-thacker19840922_draft-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-thacker19840922_draft_1-0">^</a></b></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 id="CITEREFThacker1984" class="citation techreport cs1">Thacker, Charles (22 September 1984). <a rel="nofollow" class="external text" href="http://www.bitsavers.org/pdf/dec/src/firefly/Thacker_68K_The_Firefly_Workstation_Sep84.pdf"><i>The Firefly Workstation</i></a> <span class="cs1-format">(PDF)</span> (Technical report). Digital Systems Research Center<span class="reference-accessdate">. Retrieved <span class="nowrap">21 November</span> 2021</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=report&rft.btitle=The+Firefly+Workstation&rft.pub=Digital+Systems+Research+Center&rft.date=1984-09-22&rft.aulast=Thacker&rft.aufirst=Charles&rft_id=http%3A%2F%2Fwww.bitsavers.org%2Fpdf%2Fdec%2Fsrc%2Ffirefly%2FThacker_68K_The_Firefly_Workstation_Sep84.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADEC+Firefly" class="Z3988"></span></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=DEC_Firefly&action=edit&section=8" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a rel="nofollow" class="external text" href="http://www.hpl.hp.com/techreports/Compaq-DEC/SRC-RR-21.pdf">Paul R. McJones and Garret F. Swart, "<i>Evolving the UNIX System Interface to Support Multithreaded Programs</i>", 28 September 1987. </a></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite id="CITEREFCharles_P._Thacker,_Lawrence_C._Stewart,_Edwin_H._Satterthwaite_Jr.1987" class="citation web cs1">Charles P. Thacker, Lawrence C. Stewart, Edwin H. Satterthwaite Jr. (30 December 1987). <a rel="nofollow" class="external text" href="http://research.hp.com/techreports/Compaq-DEC/SRC-RR-23.pdf">"Firefly: A Multiprocessor Workstation"</a> <span class="cs1-format">(PDF)</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Firefly%3A+A+Multiprocessor+Workstation&rft.date=1987-12-30&rft.au=Charles+P.+Thacker%2C+Lawrence+C.+Stewart%2C+Edwin+H.+Satterthwaite+Jr.&rft_id=http%3A%2F%2Fresearch.hp.com%2Ftechreports%2FCompaq-DEC%2FSRC-RR-23.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADEC+Firefly" class="Z3988"></span><span class="cs1-maint citation-comment"><code class="cs1-code">{{<a href="/wiki/Template:Cite_web" title="Template:Cite web">cite web</a>}}</code>: CS1 maint: multiple names: authors list (<a href="/wiki/Category:CS1_maint:_multiple_names:_authors_list" title="Category:CS1 maint: multiple names: authors list">link</a>)</span> <a rel="nofollow" class="external text" href="https://dn790000.ca.archive.org/0/items/bitsavers_dectechrep_1102275/SRC-RR-23.pdf">Alt URL</a></li> <li><a rel="nofollow" class="external text" href="http://csdl2.computer.org/persagen/DLAbsToc.jsp?resourcePath=/dl/trans/tc/&toc=comp/trans/tc/1988/08/t8toc.xml&DOI=10.1109/12.2243%7CFirefly:">A Multiprocessor Workstation</a></li> <li><a rel="nofollow" class="external text" href="http://mail-index.netbsd.org/port-vax/2003/03/25/0001.html">Computer's descriptive message about VAX3520/40 Firefox Firefly product </a></li></ul> <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 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href="/wiki/MicroVAX" title="MicroVAX">MicroVAX</a></li> <li><a href="/wiki/VAX_8000" title="VAX 8000">VAX 8000</a></li> <li><a href="/wiki/VAXstation" title="VAXstation">VAXstation</a></li> <li><a class="mw-selflink selflink">Firefly</a></li> <li><a href="/wiki/VAXserver" title="VAXserver">VAXserver</a></li> <li><a href="/wiki/VAX_6000" title="VAX 6000">VAX 6000</a></li> <li><a href="/wiki/VAX_4000" title="VAX 4000">VAX 4000</a></li> <li><a href="/wiki/VAX_9000" title="VAX 9000">VAX 9000</a></li> <li><a href="/wiki/VAXft" title="VAXft">VAXft</a></li> <li><a href="/wiki/VAX_7000_and_VAX_10000" title="VAX 7000 and VAX 10000">VAX 7000 and VAX 10000</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/X86" title="X86">x86</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/Rainbow_100" title="Rainbow 100">Rainbow 100</a></li> <li><a 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Alpha">Alpha</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/DEC_3000_AXP" title="DEC 3000 AXP">DEC 3000 AXP</a></li> <li><a href="/wiki/DEC_4000_AXP" title="DEC 4000 AXP">DEC 4000 AXP</a></li> <li><a href="/wiki/DEC_7000_AXP_and_DEC_10000_AXP" title="DEC 7000 AXP and DEC 10000 AXP">DEC 7000 AXP and DEC 10000 AXP</a></li> <li><a href="/wiki/DECpc_AXP_150" title="DECpc AXP 150">DECpc AXP 150</a></li> <li><a href="/wiki/DECpc_AXP_150#DEC_2000_AXP" title="DECpc AXP 150">DEC 2000 AXP</a></li> <li><a href="/wiki/DEC_Multia" title="DEC Multia">Multia</a></li> <li><a href="/wiki/AlphaServer" title="AlphaServer">AlphaServer</a></li> <li><a href="/wiki/AlphaStation" title="AlphaStation">AlphaStation</a></li> <li><a href="/wiki/Digital_Personal_Workstation" title="Digital Personal Workstation">Digital Personal Workstation</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">See also</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/Compaq_Professional_Workstation" title="Compaq Professional Workstation">Compaq Professional Workstation 1000 XP</a></li> <li><a href="/wiki/Itsy_Pocket_Computer" title="Itsy Pocket Computer">Itsy Pocket Computer</a></li> <li><a href="/wiki/Jupiter_project" title="Jupiter project">Jupiter project</a></li> <li><a href="/wiki/List_of_VAX_computers" title="List of VAX computers">List of VAX computers</a></li></ul> </div></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div> <ul><li><span class="noviewer" typeof="mw:File"><span title="Category"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/16px-Symbol_category_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" 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